cursoricon.c File Reference

#include <win32k.h>

Include dependency graph for cursoricon.c:

Go to the source code of this file.

Functions
	DBG_DEFAULT_CHANNEL (UserIcon)
BOOL	InitCursorImpl (VOID)
static VOID	IntInsertCursorIntoList (_Inout_ PCURICON_OBJECT pcur)
static VOID	IntRemoveCursorFromList (_Inout_ PCURICON_OBJECT pcur)
VOID	IntLoadSystenIcons (HICON hcur, DWORD id)
PSYSTEM_CURSORINFO	IntGetSysCursorInfo (VOID)
FORCEINLINE BOOL	is_icon (PCURICON_OBJECT object)
PCURICON_OBJECT FASTCALL	UserGetCurIconObject (HCURSOR hCurIcon)
PCURICON_OBJECT	IntSystemSetCursor (PCURICON_OBJECT pcurNew)
BOOL	UserSetCursorPos (INT x, INT y, DWORD flags, ULONG_PTR dwExtraInfo, BOOL Hook)
HANDLE	IntCreateCurIconHandle (BOOLEAN Animated)
BOOLEAN	IntDestroyCurIconObject (_In_ PVOID Object)
VOID	FreeCurIconObject (_In_ PVOID Object)
VOID FASTCALL	IntCleanupCurIconCache (PPROCESSINFO Win32Process)
	_Success_ (return !=FALSE)
BOOL APIENTRY	NtUserGetIconSize (HANDLE hCurIcon, UINT istepIfAniCur, PLONG plcx, PLONG plcy)
BOOL APIENTRY	NtUserGetCursorInfo (PCURSORINFO pci)
BOOL APIENTRY	UserClipCursor (RECTL *prcl)
BOOL APIENTRY	NtUserClipCursor (RECTL *prcl)
BOOL APIENTRY	NtUserDestroyCursor (_In_ HANDLE hCurIcon, _In_ BOOL bForce)
HICON NTAPI	NtUserFindExistingCursorIcon (_In_ PUNICODE_STRING pustrModule, _In_ PUNICODE_STRING pustrRsrc, _In_ FINDEXISTINGCURICONPARAM *param)
BOOL APIENTRY	NtUserGetClipCursor (RECTL *lpRect)
HCURSOR APIENTRY	NtUserSetCursor (HCURSOR hCursor)
BOOL APIENTRY	NtUserSetCursorContents (HANDLE hCurIcon, PICONINFO UnsafeIconInfo)
static BOOL	IntSetCursorData (_Inout_ PCURICON_OBJECT pcur, _In_opt_ PUNICODE_STRING pustrName, _In_ ATOM atomModName, _In_ const CURSORDATA *pcursordata)
static BOOL	IntSetAconData (_Inout_ PACON pacon, _In_opt_ PUNICODE_STRING pustrName, _In_ ATOM atomModName, _In_ const CURSORDATA *pcursordata)
BOOL APIENTRY	UserSetCursorIconData (_In_ HCURSOR hcursor, _In_opt_ PUNICODE_STRING pustrModule, _In_opt_ PUNICODE_STRING pustrRsrc, _In_ PCURSORDATA pcursordata)
__kernel_entry BOOL APIENTRY	NtUserSetCursorIconData (_In_ HCURSOR hcursor, _In_opt_ PUNICODE_STRING pustrModule, _In_opt_ PUNICODE_STRING pustrRsrc, _In_ const CURSORDATA *pCursorData)
BOOL	UserDrawIconEx (HDC hDc, INT xLeft, INT yTop, PCURICON_OBJECT pIcon, INT cxWidth, INT cyHeight, UINT istepIfAniCur, HBRUSH hbrFlickerFreeDraw, UINT diFlags)
BOOL APIENTRY	NtUserDrawIconEx (HDC hdc, int xLeft, int yTop, HICON hIcon, int cxWidth, int cyHeight, UINT istepIfAniCur, HBRUSH hbrFlickerFreeDraw, UINT diFlags, BOOL bMetaHDC, PVOID pDIXData)
HCURSOR NTAPI	NtUserGetCursorFrameInfo (HCURSOR hCursor, DWORD istep, INT *rate_jiffies, DWORD *num_steps)
BOOL APIENTRY	NtUserSetSystemCursor (HCURSOR hcur, DWORD id)

Variables
SYSTEM_CURSORINFO	gSysCursorInfo
PCURICON_OBJECT	gcurFirst = NULL
SYSTEMCURICO	gasyscur []
SYSTEMCURICO	gasysico []

Function Documentation

_Success_()

_Success_

(

return !

= FALSE

)

Definition at line 411 of file cursoricon.c.

{
    ICONINFO ii;
    PCURICON_OBJECT CurIcon;
    NTSTATUS Status = STATUS_SUCCESS;
    BOOL Ret = FALSE;
    DWORD colorBpp = 0;
 
    TRACE("Enter NtUserGetIconInfo\n");
 
    /* Check if something was actually asked */
    if (!IconInfo && !lpModule && !lpResName)
    {
        WARN("Nothing to fill.\n");
        EngSetLastError(ERROR_INVALID_PARAMETER);
        return FALSE;
    }
 
    UserEnterExclusive();
 
    if (!(CurIcon = UserGetCurIconObject(hCurIcon)))
    {
        WARN("UserGetIconObject(0x%p) Failed.\n", hCurIcon);
        UserLeave();
        return FALSE;
    }
 
    /* Give back the icon information */
    if (IconInfo)
    {
        PCURICON_OBJECT FrameCurIcon = CurIcon;
        if (CurIcon->CURSORF_flags & CURSORF_ACON)
        {
            /* Get information from first frame. */
            FrameCurIcon = ((PACON)CurIcon)->aspcur[0];
        }
 
        /* Fill data */
        ii.fIcon = is_icon(FrameCurIcon);
        ii.xHotspot = FrameCurIcon->xHotspot;
        ii.yHotspot = FrameCurIcon->yHotspot;
 
        /* Copy bitmaps */
        ii.hbmMask = BITMAP_CopyBitmap(FrameCurIcon->hbmMask);
        GreSetObjectOwner(ii.hbmMask, GDI_OBJ_HMGR_POWNED);
        ii.hbmColor = BITMAP_CopyBitmap(FrameCurIcon->hbmColor);
        GreSetObjectOwner(ii.hbmColor, GDI_OBJ_HMGR_POWNED);
        colorBpp = FrameCurIcon->bpp;
 
        /* Copy fields */
        _SEH2_TRY
        {
            ProbeForWrite(IconInfo, sizeof(ICONINFO), 1);
            RtlCopyMemory(IconInfo, &ii, sizeof(ICONINFO));
 
            if (pbpp)
            {
                ProbeForWrite(pbpp, sizeof(DWORD), 1);
                *pbpp = colorBpp;
            }
        }
        _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
        {
            Status = _SEH2_GetExceptionCode();
        }
        _SEH2_END
 
        if (!NT_SUCCESS(Status))
        {
            WARN("Status: 0x%08lx\n", Status);
            SetLastNtError(Status);
            goto leave;
        }
    }
 
    /* Give back the module name */
    if (lpModule)
    {
        ULONG BufLen = 0;
        if (!CurIcon->atomModName)
            goto leave;
 
        RtlQueryAtomInAtomTable(gAtomTable, CurIcon->atomModName, NULL, NULL, NULL, &BufLen);
        /* Get the module name from the atom table */
        _SEH2_TRY
        {
            BufLen += sizeof(WCHAR);
            if (BufLen > (lpModule->MaximumLength))
            {
                lpModule->Length = 0;
                lpModule->MaximumLength = BufLen;
            }
            else
            {
                ProbeForWrite(lpModule->Buffer, lpModule->MaximumLength, 1);
                BufLen = lpModule->MaximumLength;
                RtlQueryAtomInAtomTable(gAtomTable, CurIcon->atomModName, NULL, NULL, lpModule->Buffer, &BufLen);
                lpModule->Length = BufLen;
            }
        }
        _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
        {
            Status = _SEH2_GetExceptionCode();
        }
        _SEH2_END
 
        if (!NT_SUCCESS(Status))
        {
            SetLastNtError(Status);
            goto leave;
        }
    }
 
    if (lpResName)
    {
        if (!CurIcon->strName.Buffer)
            goto leave;
 
        /* Copy it */
        _SEH2_TRY
        {
            ProbeForWrite(lpResName, sizeof(UNICODE_STRING), 1);
            if (IS_INTRESOURCE(CurIcon->strName.Buffer))
            {
                lpResName->Buffer = CurIcon->strName.Buffer;
                lpResName->Length = 0;
                lpResName->MaximumLength = 0;
            }
            else if (lpResName->MaximumLength < CurIcon->strName.MaximumLength)
            {
                lpResName->Length = 0;
                lpResName->MaximumLength = CurIcon->strName.MaximumLength;
            }
            else
            {
                ProbeForWrite(lpResName->Buffer, lpResName->MaximumLength, 1);
                RtlCopyMemory(lpResName->Buffer, CurIcon->strName.Buffer, CurIcon->strName.Length);
                lpResName->Length = CurIcon->strName.Length;
            }
        }
        _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
        {
            Status = _SEH2_GetExceptionCode();
        }
        _SEH2_END
    }
 
    if (!NT_SUCCESS(Status))
    {
        SetLastNtError(Status);
        goto leave;
    }
 
    Ret = TRUE;
 
leave:
    UserDereferenceObject(CurIcon);
 
    TRACE("Leave NtUserGetIconInfo, ret=%i\n", Ret);
    UserLeave();
 
    return Ret;
}

DBG_DEFAULT_CHANNEL()

DBG_DEFAULT_CHANNEL

(

UserIcon

)

FreeCurIconObject()

VOID FreeCurIconObject

(

_In_ PVOID

Object

)

Definition at line 336 of file cursoricon.c.

{
    PCURICON_OBJECT CurIcon = Object;
 
    if (!(CurIcon->CURSORF_flags & CURSORF_ACON))
    {
        HBITMAP bmpMask = CurIcon->hbmMask;
        HBITMAP bmpColor = CurIcon->hbmColor;
        HBITMAP bmpAlpha = CurIcon->hbmAlpha;
 
        /* Delete bitmaps */
        if (bmpMask)
        {
            GreSetObjectOwner(bmpMask, GDI_OBJ_HMGR_POWNED);
            NT_VERIFY(GreDeleteObject(bmpMask) == TRUE);
            CurIcon->hbmMask = NULL;
        }
        if (bmpColor)
        {
            GreSetObjectOwner(bmpColor, GDI_OBJ_HMGR_POWNED);
            NT_VERIFY(GreDeleteObject(bmpColor) == TRUE);
            CurIcon->hbmColor = NULL;
        }
        if (bmpAlpha)
        {
            GreSetObjectOwner(bmpAlpha, GDI_OBJ_HMGR_POWNED);
            NT_VERIFY(GreDeleteObject(bmpAlpha) == TRUE);
            CurIcon->hbmAlpha = NULL;
        }
    }
    else
    {
        PACON AniCurIcon = (PACON)CurIcon;
        UINT i;
 
        for (i = 0; i < AniCurIcon->cpcur; i++)
        {
            UserDereferenceObject(AniCurIcon->aspcur[i]);
            NT_VERIFY(IntDestroyCurIconObject(AniCurIcon->aspcur[i]) == TRUE);
        }
        ExFreePoolWithTag(AniCurIcon->aspcur, USERTAG_CURSOR);
    }
 
    if (CurIcon->CURSORF_flags & CURSORF_LRSHARED)
    {
        if (!IS_INTRESOURCE(CurIcon->strName.Buffer))
            ExFreePoolWithTag(CurIcon->strName.Buffer, TAG_STRING);
        if (CurIcon->atomModName)
            RtlDeleteAtomFromAtomTable(gAtomTable, CurIcon->atomModName);
        CurIcon->strName.Buffer = NULL;
        CurIcon->atomModName = 0;
    }
 
    /* Finally free the thing */
    FreeProcMarkObject(CurIcon);
}

InitCursorImpl()

BOOL InitCursorImpl

(

VOID

)

Definition at line 64 of file cursoricon.c.

{
    gSysCursorInfo.Enabled = FALSE;
    gSysCursorInfo.ButtonsDown = 0;
    gSysCursorInfo.bClipped = FALSE;
    gSysCursorInfo.LastBtnDown = 0;
    gSysCursorInfo.CurrentCursorObject = NULL;
    gSysCursorInfo.ShowingCursor = -1;
    gSysCursorInfo.ClickLockActive = FALSE;
    gSysCursorInfo.ClickLockTime = 0;
 
    return TRUE;
}

Referenced by IntCreateWindowStation().

IntCleanupCurIconCache()

VOID FASTCALL IntCleanupCurIconCache

(

PPROCESSINFO

Win32Process

)

Definition at line 395 of file cursoricon.c.

{
    PCURICON_OBJECT CurIcon;
 
    /* Run through the list of icon objects */
    while (Win32Process->pCursorCache)
    {
        CurIcon = Win32Process->pCursorCache;
        Win32Process->pCursorCache = CurIcon->pcurNext;
        UserDereferenceObject(CurIcon);
    }
}

Referenced by UserProcessDestroy().

IntCreateCurIconHandle()

HANDLE IntCreateCurIconHandle

(

BOOLEAN

Animated

)

Definition at line 285 of file cursoricon.c.

{
    PCURICON_OBJECT CurIcon;
    HANDLE hCurIcon;
 
    CurIcon = UserCreateObject(
        gHandleTable,
        NULL,
        GetW32ThreadInfo(),
        &hCurIcon,
        TYPE_CURSOR,
        Animated ? sizeof(ACON) : sizeof(CURICON_OBJECT));
 
    if (!CurIcon)
    {
        EngSetLastError(ERROR_NOT_ENOUGH_MEMORY);
        return FALSE;
    }
 
    if (Animated)
    {
        /* We MUST set this flag, to track whether this is an ACON! */
        CurIcon->CURSORF_flags |= CURSORF_ACON;
    }
 
    NT_ASSERT(CurIcon->pcurNext == NULL);
    UserDereferenceObject(CurIcon);
 
    return hCurIcon;
}

Referenced by IntSetAconData(), and NtUserCallOneParam().

IntDestroyCurIconObject()

BOOLEAN IntDestroyCurIconObject

(

_In_ PVOID

Object

)

Definition at line 317 of file cursoricon.c.

{
    PCURICON_OBJECT CurIcon = Object;
 
    /* Check if the cursor is in a list */
    if (CurIcon->CURSORF_flags & CURSORF_LINKED)
    {
        /* Remove the cursor from it's list */
        IntRemoveCursorFromList(CurIcon);
    }
 
    /* We just mark the handle as being destroyed.
     * Deleting all the stuff will be deferred to the actual struct free. */
    UserDeleteObject(UserHMGetHandle(CurIcon), TYPE_CURSOR);
    return TRUE;
}

Referenced by FreeCurIconObject(), IntDestroyClass(), IntSetAconData(), NtUserDestroyCursor(), and UserSetClassLongPtr().

IntGetSysCursorInfo()

PSYSTEM_CURSORINFO IntGetSysCursorInfo

(

VOID

)

Definition at line 187 of file cursoricon.c.

{
    return &gSysCursorInfo;
}

Referenced by co_IntProcessMouseMessage(), co_MsqInsertMouseMessage(), MsqCleanupMessageQueue(), NtUserGetClipCursor(), NtUserGetCursorInfo(), UserClipCursor(), UserGetMouseButtonsState(), UserSendMouseInput(), UserSetCursor(), UserSetCursorPos(), and UserShowCursor().

IntInsertCursorIntoList()

static VOID IntInsertCursorIntoList ( _Inout_ PCURICON_OBJECT  pcur )

static

Definition at line 80 of file cursoricon.c.

{
    PPROCESSINFO ppi = pcur->head.ppi;
    PCURICON_OBJECT *ppcurHead;
    NT_ASSERT((pcur->CURSORF_flags & (CURSORF_GLOBAL|CURSORF_LRSHARED)) != 0);
    NT_ASSERT((pcur->CURSORF_flags & CURSORF_LINKED) == 0);
 
    /* Get the right list head */
    ppcurHead = (pcur->CURSORF_flags & CURSORF_GLOBAL) ?
        &gcurFirst : &ppi->pCursorCache;
 
    UserReferenceObject(pcur);
    pcur->pcurNext = *ppcurHead;
    *ppcurHead = pcur;
    pcur->CURSORF_flags |= CURSORF_LINKED;
}

Referenced by IntLoadSystenIcons(), NtUserSetSystemCursor(), and UserSetCursorIconData().

IntLoadSystenIcons()

VOID IntLoadSystenIcons	(	HICON	hcur,
		DWORD	id
	)

Definition at line 137 of file cursoricon.c.

{
    PCURICON_OBJECT pcur;
    int i;
    PPROCESSINFO ppi;
 
    if (hcur)
    {
        pcur = UserGetCurIconObject(hcur);
        if (!pcur)
        {
            EngSetLastError(ERROR_INVALID_CURSOR_HANDLE);
            return;
        }
 
        ppi = PsGetCurrentProcessWin32Process();
 
        if (!(ppi->W32PF_flags & W32PF_CREATEDWINORDC))
           return;
 
        // Set Small Window Icon and do not link.
        if ( id == OIC_WINLOGO+1 )
        {
            pcur->CURSORF_flags |= CURSORF_GLOBAL;
            UserReferenceObject(pcur);
            pcur->head.ppi = NULL;
            return;
        }
 
        for (i = 0 ; i < 6; i++)
        {
            if (gasysico[i].type == id)
            {
                gasysico[i].handle = pcur;
                pcur->CURSORF_flags |= CURSORF_GLOBAL;
 
                //
                //  The active switch between LR shared and Global public.
                //  This is hacked around to support this while at the initial system start up.
                //
                pcur->head.ppi = NULL;
 
                IntInsertCursorIntoList(pcur);
                return;
            }
        }
    }
}

Referenced by co_IntSetWndIcons().

IntRemoveCursorFromList()

static VOID IntRemoveCursorFromList ( _Inout_ PCURICON_OBJECT  pcur )

static

Definition at line 101 of file cursoricon.c.

{
    PPROCESSINFO ppi = pcur->head.ppi;
    PCURICON_OBJECT *ppcurHead;
    PCURICON_OBJECT *ppcur;
    NT_ASSERT((pcur->CURSORF_flags & (CURSORF_GLOBAL|CURSORF_LRSHARED)) != 0);
    NT_ASSERT((pcur->CURSORF_flags & CURSORF_LINKED) != 0);
 
    /* Get the right list head */
    ppcurHead = (pcur->CURSORF_flags & CURSORF_GLOBAL) ?
        &gcurFirst : &ppi->pCursorCache;
 
    /* Loop all cursors in the cache */
    for (ppcur = ppcurHead;
         (*ppcur) != NULL;
         ppcur = &(*ppcur)->pcurNext)
    {
        /* Check if this is the one we are looking for */
        if ((*ppcur) == pcur)
        {
            /* Remove it from the list */
            (*ppcur) = pcur->pcurNext;
 
            /* Dereference it */
            UserDereferenceObject(pcur);
            pcur->CURSORF_flags &= ~CURSORF_LINKED;
            return;
        }
    }
 
    /* We did not find it, this must not happen */
    NT_ASSERT(FALSE);
}

Referenced by IntDestroyCurIconObject().

IntSetAconData()

static BOOL IntSetAconData ( _Inout_ PACON  pacon, _In_opt_ PUNICODE_STRING  pustrName, _In_ ATOM  atomModName, _In_ const CURSORDATA *  pcursordata  )

static

Definition at line 1238 of file cursoricon.c.

{
    PCURICON_OBJECT *aspcur;
    DWORD *aicur;
    INT *ajifRate;
    PCURSORDATA pcdFrame;
    HCURSOR hcurFrame;
    UINT cjSize, i;
 
    NT_ASSERT((pacon->CURSORF_flags & CURSORF_ACON) != 0);
    NT_ASSERT((pacon->CURSORF_flags & CURSORF_ACONFRAME) == 0);
    NT_ASSERT((ULONG_PTR)pcursordata->aspcur > MmUserProbeAddress);
    NT_ASSERT((ULONG_PTR)pcursordata->aicur > MmUserProbeAddress);
    NT_ASSERT((ULONG_PTR)pcursordata->ajifRate > MmUserProbeAddress);
    NT_ASSERT((pcursordata->CURSORF_flags & ~CURSORF_USER_MASK) == 0);
    NT_ASSERT(pcursordata->cpcur > 0);
    NT_ASSERT(pcursordata->cicur > 0);
 
    /* Check if the CURSORF_ACON is also set in the cursor data */
    if (!(pcursordata->CURSORF_flags & CURSORF_ACON))
    {
        ERR("Mismatch in CURSORF_flags! acon: 0x%08lx, data:  0x%08lx\n",
            pacon->CURSORF_flags, pcursordata->CURSORF_flags);
        return FALSE;
    }
 
    /* Check if this acon was already set */
    if (pacon->aspcur != NULL)
    {
        ERR("Acon data already set!\n");
        return FALSE;
    }
 
    /* Loop all frames indexes */
    for (i = 0; i < pcursordata->cicur; i++)
    {
        /* Check if the index is within the range of the frames */
        if (pcursordata->aicur[i] >= pcursordata->cpcur)
        {
            ERR("aicur[%lu] is out or range. Got %lu, cpcur = %u\n",
                i, pcursordata->aicur[i], pcursordata->cpcur);
            return FALSE;
        }
 
        /* FIXME: check the JIF rates? */
    }
 
    /* Calculate size: one cursor object for each frame, and a frame
       index and jiffies for each "step" */
    cjSize = (pcursordata->cpcur * sizeof(CURICON_OBJECT*)) +
             (pcursordata->cicur * sizeof(DWORD)) +
             (pcursordata->cicur * sizeof(INT));
 
    /* Allocate a buffer */
    aspcur = ExAllocatePoolWithTag(PagedPool, cjSize, USERTAG_CURSOR);
    if (aspcur == NULL)
    {
        ERR("Failed to allocate memory (cpcur = %u, cicur = %u)\n",
            pcursordata->cpcur, pcursordata->cicur);
        return FALSE;
    }
 
    /* Set the pointers */
    aicur = (DWORD*)&aspcur[pcursordata->cpcur];
    ajifRate = (INT*)&aicur[pcursordata->cicur];
 
    /* Copy the values */
    RtlCopyMemory(aicur, pcursordata->aicur, pcursordata->cicur * sizeof(DWORD));
    RtlCopyMemory(ajifRate, pcursordata->ajifRate, pcursordata->cicur * sizeof(INT));
 
    /* Zero out the array, so we can handle cleanup */
    RtlZeroMemory(aspcur, pcursordata->cpcur * sizeof(PCURICON_OBJECT));
 
    /* Get a pointer to the cursor data for each frame */
    pcdFrame = pcursordata->aspcur;
 
    /* Create the cursors */
    for (i = 0; i < pcursordata->cpcur; i++)
    {
        /* Create a cursor for this frame */
        hcurFrame = IntCreateCurIconHandle(FALSE);
        if (hcurFrame == NULL)
        {
            ERR("Failed to create a cursor for frame %u\n", i);
            goto Cleanup;
        }
 
        /* Get a pointer to the frame cursor */
        aspcur[i] = UserGetCurIconObject(hcurFrame);
        _PRAGMA_WARNING_SUPPRESS(__WARNING_READ_OVERRUN);
        NT_ASSERT(aspcur[i] != NULL);
 
        /* Check if the flags are valid */
        if (pcdFrame->CURSORF_flags & ~(CURSORF_USER_MASK|CURSORF_ACONFRAME))
        {
            ERR("Invalid flags for acon frame %u: 0x%08lx\n",
                i, pcdFrame->CURSORF_flags);
            goto Cleanup;
        }
 
        /* Set the cursor data for this frame */
        if (!IntSetCursorData(aspcur[i], NULL, 0, &pcdFrame[i]))
        {
            ERR("Failed to set cursor data for frame %u\n", i);
            goto Cleanup;
        }
 
        /* Mark this cursor as an acon frame */
        aspcur[i]->CURSORF_flags |= CURSORF_ACONFRAME;
    }
 
    /* Free the old name (Must be NULL atm.) */
    NT_ASSERT(pacon->strName.Buffer == NULL);
    if (pacon->strName.Buffer != NULL)
    {
        if (!IS_INTRESOURCE(pacon->strName.Buffer))
        {
            ExFreePoolWithTag(pacon->strName.Buffer, TAG_STRING);
        }
        RtlInitEmptyUnicodeString(&pacon->strName, NULL, 0);
    }
 
    /* Free the module atom */
    if (pacon->atomModName != 0)
    {
        NT_VERIFY(NT_SUCCESS(RtlDeleteAtomFromAtomTable(gAtomTable, pacon->atomModName)));
    }
 
    /* Free the previous frames */
    if (pacon->aspcur != NULL)
    {
        for (i = 0; i < pacon->cpcur; i++)
        {
            UserDereferenceObject(pacon->aspcur[i]);
            NT_VERIFY(IntDestroyCurIconObject(pacon->aspcur[i]) == TRUE);
        }
        ExFreePoolWithTag(pacon->aspcur, USERTAG_CURSOR);
    }
 
    /* Finally set the data in the acon */
    pacon->atomModName = atomModName;
    pacon->rt = pcursordata->rt;
    pacon->CURSORF_flags = pcursordata->CURSORF_flags & CURSORF_USER_MASK;
    pacon->cpcur = pcursordata->cpcur;
    pacon->cicur = pcursordata->cicur;
    pacon->aspcur = aspcur;
    pacon->aicur = aicur;
    pacon->ajifRate = ajifRate;
    pacon->iicur = 0;
    if (pustrName != NULL)
    {
        pacon->strName = *pustrName;
    }
 
    return TRUE;
 
Cleanup:
 
    /* Clean up the cursors we created */
    for (i = 0; i < pcursordata->cpcur; i++)
    {
        if (aspcur[i] == NULL)
            break;
 
        /* Destroy this cursor */
        UserDereferenceObject(aspcur[i]);
        NT_VERIFY(IntDestroyCurIconObject(aspcur[i]) == TRUE);
    }
 
    /* Delete the allocated structure */
    ExFreePoolWithTag(aspcur, USERTAG_CURSOR);
 
    return FALSE;
}

Referenced by UserSetCursorIconData().

IntSetCursorData()

static BOOL IntSetCursorData ( _Inout_ PCURICON_OBJECT  pcur, _In_opt_ PUNICODE_STRING  pustrName, _In_ ATOM  atomModName, _In_ const CURSORDATA *  pcursordata  )

static

Definition at line 1130 of file cursoricon.c.

{
    /* Check if the CURSORF_ACON is also set in the cursor data */
    if (pcursordata->CURSORF_flags & CURSORF_ACON)
    {
        ERR("Mismatch in CURSORF_flags! cursor: 0x%08lx, data:  0x%08lx\n",
            pcur->CURSORF_flags, pcursordata->CURSORF_flags);
        return FALSE;
    }
 
    /* Check if this cursor was already set */
    if (pcur->hbmMask != NULL)
    {
        ERR("Cursor data already set!\n");
        return FALSE;
    }
 
    /* We need a mask */
    if (pcursordata->hbmMask == NULL)
    {
        ERR("NtUserSetCursorIconData was got no hbmMask.\n");
        EngSetLastError(ERROR_INVALID_PARAMETER);
        return FALSE;
    }
 
    /* Take ownership of the mask bitmap */
    if (!GreSetBitmapOwner(pcursordata->hbmMask, GDI_OBJ_HMGR_PUBLIC))
    {
        ERR("Failed to set ownership of hbmMask %p.\n", pcursordata->hbmMask);
        return FALSE;
    }
 
    /* Check if we have a color bitmap */
    if (pcursordata->hbmColor)
    {
        /* Take ownership of the color bitmap */
        if (!GreSetBitmapOwner(pcursordata->hbmColor, GDI_OBJ_HMGR_PUBLIC))
        {
            ERR("Failed to set ownership of hbmColor %p.\n", pcursordata->hbmColor);
            GreSetBitmapOwner(pcursordata->hbmMask, GDI_OBJ_HMGR_POWNED);
            return FALSE;
        }
    }
 
    /* Check if we have an alpha bitmap */
    if (pcursordata->hbmAlpha)
    {
        /* Take ownership of the alpha bitmap */
        if (!GreSetBitmapOwner(pcursordata->hbmAlpha, GDI_OBJ_HMGR_PUBLIC))
        {
            ERR("Failed to set ownership of hbmAlpha %p.\n", pcursordata->hbmAlpha);
            GreSetBitmapOwner(pcursordata->hbmMask, GDI_OBJ_HMGR_POWNED);
            if (pcursordata->hbmColor)
            {
                GreSetBitmapOwner(pcursordata->hbmColor, GDI_OBJ_HMGR_POWNED);
            }
            return FALSE;
        }
    }
 
    /* Free the old name (Must be NULL atm, but later we might allow this) */
    NT_ASSERT(pcur->strName.Buffer == NULL);
    if (pcur->strName.Buffer != NULL)
    {
        if (!IS_INTRESOURCE(pcur->strName.Buffer))
        {
            ExFreePoolWithTag(pcur->strName.Buffer, TAG_STRING);
        }
        RtlInitEmptyUnicodeString(&pcur->strName, NULL, 0);
    }
 
    /* Free the module atom */
    if (pcur->atomModName != 0)
    {
        NT_VERIFY(NT_SUCCESS(RtlDeleteAtomFromAtomTable(gAtomTable, pcur->atomModName)));
    }
 
    /* Now set the new cursor data */
    pcur->atomModName = atomModName;
    pcur->rt = pcursordata->rt;
    pcur->CURSORF_flags = pcursordata->CURSORF_flags & CURSORF_USER_MASK;
    pcur->xHotspot = pcursordata->xHotspot;
    pcur->yHotspot = pcursordata->yHotspot;
    pcur->hbmMask = pcursordata->hbmMask;
    pcur->hbmColor = pcursordata->hbmColor;
    pcur->hbmAlpha = pcursordata->hbmAlpha;
    pcur->rcBounds.left = 0;
    pcur->rcBounds.top = 0;
    pcur->rcBounds.right = pcursordata->cx;
    pcur->rcBounds.bottom = pcursordata->cy;
    pcur->hbmUserAlpha = pcursordata->hbmUserAlpha;
    pcur->bpp = pcursordata->bpp;
    pcur->cx = pcursordata->cx;
    pcur->cy = pcursordata->cy;
    if (pustrName != NULL)
    {
        pcur->strName = *pustrName;
    }
 
    return TRUE;
}

Referenced by IntSetAconData(), and UserSetCursorIconData().

IntSystemSetCursor()

PCURICON_OBJECT IntSystemSetCursor

(

PCURICON_OBJECT

pcurNew

)

Definition at line 230 of file cursoricon.c.

{
    PCURICON_OBJECT pcurOld = UserSetCursor(pcurNew, FALSE);
    if (pcurNew) UserReferenceObject(pcurNew);
    if (pcurOld) UserDereferenceObject(pcurOld);
    return pcurOld;
}

Referenced by co_IntProcessMouseMessage(), and DefWndHandleSetCursor().

is_icon()

FORCEINLINE BOOL is_icon

(

PCURICON_OBJECT

object

)

Definition at line 194 of file cursoricon.c.

{
    return MAKEINTRESOURCE(object->rt) == RT_ICON;
}

Referenced by _Success_(), LISTVIEW_DeleteItem(), NtUserFindExistingCursorIcon(), and UserDrawIconEx().

NtUserClipCursor()

BOOL APIENTRY NtUserClipCursor

(

RECTL *

prcl

)

Definition at line 753 of file cursoricon.c.

{
    RECTL rclLocal;
    BOOL bResult;
 
    if (prcl)
    {
        _SEH2_TRY
        {
            /* Probe and copy rect */
            ProbeForRead(prcl, sizeof(RECTL), 1);
            rclLocal = *prcl;
        }
        _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
        {
            EngSetLastError(ERROR_INVALID_PARAMETER);
            _SEH2_YIELD(return FALSE;)
        }
        _SEH2_END
 
        prcl = &rclLocal;
    }
 
    UserEnterExclusive();
 
    /* Call the internal function */
    bResult = UserClipCursor(prcl);
 
    UserLeave();
 
    return bResult;
}

NtUserDestroyCursor()

BOOL APIENTRY NtUserDestroyCursor	(	_In_ HANDLE	hCurIcon,
		_In_ BOOL	bForce
	)

Definition at line 793 of file cursoricon.c.

{
    BOOL ret;
    PCURICON_OBJECT CurIcon = NULL;
 
    TRACE("Enter NtUserDestroyCursorIcon (%p, %i)\n", hCurIcon, bForce);
    UserEnterExclusive();
 
    CurIcon = UserGetCurIconObject(hCurIcon);
    if (!CurIcon)
    {
        ret = FALSE;
        goto leave;
    }
 
    if (!bForce)
    {
        /* Can not destroy global objects */
        if (CurIcon->head.ppi == NULL)
        {
           ERR("Trying to delete global cursor!\n");
           ret = TRUE;
           goto leave;
        }
 
        /* Maybe we have good reasons not to destroy this object */
        if (CurIcon->head.ppi != PsGetCurrentProcessWin32Process())
        {
            /* No way, you're not touching my cursor */
            ret = FALSE;
            goto leave;
        }
 
        if (CurIcon->CURSORF_flags & CURSORF_CURRENT)
        {
            WARN("Trying to delete current cursor!\n");
            ret = FALSE;
            goto leave;
        }
 
        if (CurIcon->CURSORF_flags & CURSORF_LRSHARED)
        {
            WARN("Trying to delete shared cursor.\n");
            /* This one is not an error */
            ret = TRUE;
            goto leave;
        }
    }
 
    /* Destroy the handle */
    ret = IntDestroyCurIconObject(CurIcon);
 
leave:
    if (CurIcon)
        UserDereferenceObject(CurIcon);
    TRACE("Leave NtUserDestroyCursorIcon, ret=%i\n", ret);
    UserLeave();
    return ret;
}

Referenced by CreateIconFromResourceEx(), CreateIconIndirect(), CURSORICON_CopyImage(), CURSORICON_LoadFromFileW(), CURSORICON_LoadImageW(), DestroyCursor(), DestroyIcon(), START_TEST(), and Test_OneParamRoutine_CreateEmptyCurObject().

NtUserDrawIconEx()

BOOL APIENTRY NtUserDrawIconEx	(	HDC	hdc,
		int	xLeft,
		int	yTop,
		HICON	hIcon,
		int	cxWidth,
		int	cyHeight,
		UINT	istepIfAniCur,
		HBRUSH	hbrFlickerFreeDraw,
		UINT	diFlags,
		BOOL	bMetaHDC,
		PVOID	pDIXData
	)

Definition at line 2084 of file cursoricon.c.

{
    PCURICON_OBJECT pIcon;
    BOOL Ret;
 
    TRACE("Enter NtUserDrawIconEx\n");
    UserEnterExclusive();
 
    if (!(pIcon = UserGetCurIconObject(hIcon)))
    {
        ERR("UserGetCurIconObject(0x%p) failed!\n", hIcon);
        UserLeave();
        return FALSE;
    }
 
    Ret = UserDrawIconEx(hdc,
                         xLeft,
                         yTop,
                         pIcon,
                         cxWidth,
                         cyHeight,
                         istepIfAniCur,
                         hbrFlickerFreeDraw,
                         diFlags);
 
    UserDereferenceObject(pIcon);
 
    UserLeave();
    return Ret;
}

Referenced by DrawIconEx().

NtUserFindExistingCursorIcon()

HICON NTAPI NtUserFindExistingCursorIcon	(	_In_ PUNICODE_STRING	pustrModule,
		_In_ PUNICODE_STRING	pustrRsrc,
		_In_ FINDEXISTINGCURICONPARAM *	param
	)

Definition at line 861 of file cursoricon.c.

{
    PCURICON_OBJECT CurIcon;
    HICON Ret = NULL;
    UNICODE_STRING ustrModuleSafe, ustrRsrcSafe;
    FINDEXISTINGCURICONPARAM paramSafe;
    NTSTATUS Status;
    PPROCESSINFO pProcInfo = PsGetCurrentProcessWin32Process();
    RTL_ATOM atomModName;
 
    TRACE("Enter NtUserFindExistingCursorIcon\n");
 
    _SEH2_TRY
    {
        ProbeForRead(param, sizeof(*param), 1);
        RtlCopyMemory(&paramSafe, param, sizeof(paramSafe));
    }
    _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
    {
        Status = _SEH2_GetExceptionCode();
    }
    _SEH2_END
 
    /* Capture resource name (it can be an INTRESOURCE == ATOM) */
    Status = ProbeAndCaptureUnicodeStringOrAtom(&ustrRsrcSafe, pustrRsrc);
    if (!NT_SUCCESS(Status))
        return NULL;
    Status = ProbeAndCaptureUnicodeString(&ustrModuleSafe, UserMode, pustrModule);
    if (!NT_SUCCESS(Status))
        goto done;
    Status = RtlLookupAtomInAtomTable(gAtomTable, ustrModuleSafe.Buffer, &atomModName);
    ReleaseCapturedUnicodeString(&ustrModuleSafe, UserMode);
    if (!NT_SUCCESS(Status))
    {
        /* The module is not in the atom table. No chance to find the cursor */
        goto done;
    }
 
    UserEnterShared();
    CurIcon = pProcInfo->pCursorCache;
    while (CurIcon)
    {
        /* Icon/cursor */
        if (paramSafe.bIcon != is_icon(CurIcon))
        {
            CurIcon = CurIcon->pcurNext;
            continue;
        }
        /* See if module names match */
        if (atomModName == CurIcon->atomModName)
        {
            /* They do. Now see if this is the same resource */
            if (IS_INTRESOURCE(CurIcon->strName.Buffer) != IS_INTRESOURCE(ustrRsrcSafe.Buffer))
            {
                /* One is an INT resource and the other is not -> no match */
                CurIcon = CurIcon->pcurNext;
                continue;
            }
 
            if (IS_INTRESOURCE(CurIcon->strName.Buffer))
            {
                if (CurIcon->strName.Buffer == ustrRsrcSafe.Buffer)
                {
                    /* INT resources match */
                    break;
                }
            }
            else if (RtlCompareUnicodeString(&ustrRsrcSafe, &CurIcon->strName, TRUE) == 0)
            {
                /* Resource name strings match */
                break;
            }
        }
        CurIcon = CurIcon->pcurNext;
    }
 
    /* Now search Global Cursors or Icons. */
    if (CurIcon == NULL)
    {
        CurIcon = gcurFirst;
        while (CurIcon)
        {
            /* Icon/cursor */
            if (paramSafe.bIcon != is_icon(CurIcon))
            {
                CurIcon = CurIcon->pcurNext;
                continue;
            }
            /* See if module names match */
            if (atomModName == CurIcon->atomModName)
            {
                /* They do. Now see if this is the same resource */
                if (IS_INTRESOURCE(CurIcon->strName.Buffer) != IS_INTRESOURCE(ustrRsrcSafe.Buffer))
                {
                    /* One is an INT resource and the other is not -> no match */
                    CurIcon = CurIcon->pcurNext;
                    continue;
                }
                if (IS_INTRESOURCE(CurIcon->strName.Buffer))
                {
                    if (CurIcon->strName.Buffer == ustrRsrcSafe.Buffer)
                    {
                        /* INT resources match */
                        break;
                    }
                }
                else if (RtlCompareUnicodeString(&ustrRsrcSafe, &CurIcon->strName, TRUE) == 0)
                {
                    /* Resource name strings match */
                    break;
                }
            }
            CurIcon = CurIcon->pcurNext;
        }
    }
    if (CurIcon)
        Ret = UserHMGetHandle(CurIcon);
    UserLeave();
 
done:
    if (!IS_INTRESOURCE(ustrRsrcSafe.Buffer))
        ExFreePoolWithTag(ustrRsrcSafe.Buffer, TAG_STRING);
 
    return Ret;
}

Referenced by CURSORICON_LoadImageW().

NtUserGetClipCursor()

BOOL APIENTRY NtUserGetClipCursor

(

RECTL *

lpRect

)

Definition at line 996 of file cursoricon.c.

{
    PSYSTEM_CURSORINFO CurInfo;
    RECTL Rect;
    NTSTATUS Status;
    BOOL Ret = FALSE;
 
    TRACE("Enter NtUserGetClipCursor\n");
    UserEnterShared();
 
    if (!CheckWinstaAttributeAccess(WINSTA_READATTRIBUTES))
    {
        goto Exit; // Return FALSE
    }
 
    if (!lpRect)
        goto Exit; // Return FALSE
 
    CurInfo = IntGetSysCursorInfo();
    if (CurInfo->bClipped)
    {
        Rect = CurInfo->rcClip;
    }
    else
    {
        Rect.left = 0;
        Rect.top = 0;
        Rect.right = UserGetSystemMetrics(SM_CXSCREEN);
        Rect.bottom = UserGetSystemMetrics(SM_CYSCREEN);
    }
 
    Status = MmCopyToCaller(lpRect, &Rect, sizeof(RECT));
    if (!NT_SUCCESS(Status))
    {
        SetLastNtError(Status);
        goto Exit; // Return FALSE
    }
 
    Ret = TRUE;
 
Exit:
    TRACE("Leave NtUserGetClipCursor, ret=%i\n", Ret);
    UserLeave();
    return Ret;
}

NtUserGetCursorFrameInfo()

HCURSOR NTAPI NtUserGetCursorFrameInfo	(	HCURSOR	hCursor,
		DWORD	istep,
		INT *	rate_jiffies,
		DWORD *	num_steps
	)

Definition at line 2131 of file cursoricon.c.

{
    PCURICON_OBJECT CurIcon;
    HCURSOR ret;
    INT jiffies = 0;
    DWORD steps = 1;
    NTSTATUS Status = STATUS_SUCCESS;
 
    TRACE("Enter NtUserGetCursorFrameInfo\n");
    UserEnterShared();
 
    if (!(CurIcon = UserGetCurIconObject(hCursor)))
    {
        UserLeave();
        return NULL;
    }
 
    ret = UserHMGetHandle(CurIcon);
 
    if (CurIcon->CURSORF_flags & CURSORF_ACON)
    {
        PACON AniCurIcon = (PACON)CurIcon;
        if (istep >= AniCurIcon->cicur)
        {
            UserDereferenceObject(CurIcon);
            UserLeave();
            return NULL;
        }
        jiffies = AniCurIcon->ajifRate[istep];
        steps = AniCurIcon->cicur;
        ret = UserHMGetHandle(AniCurIcon->aspcur[AniCurIcon->aicur[istep]]);
    }
 
    _SEH2_TRY
    {
        ProbeForWrite(rate_jiffies, sizeof(INT), 1);
        ProbeForWrite(num_steps, sizeof(DWORD), 1);
        *rate_jiffies = jiffies;
        *num_steps = steps;
    }
    _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
    {
        Status = _SEH2_GetExceptionCode();
    }
    _SEH2_END
 
    if (!NT_SUCCESS(Status))
    {
        WARN("Status: 0x%08lx\n", Status);
        SetLastNtError(Status);
        ret = NULL;
    }
 
    UserDereferenceObject(CurIcon);
    UserLeave();
 
    TRACE("Leaving NtUserGetCursorFrameInfo, ret = 0x%p\n", ret);
 
    return ret;
}

Referenced by GetCursorFrameInfo().

NtUserGetCursorInfo()

BOOL APIENTRY NtUserGetCursorInfo

(

PCURSORINFO

pci

)

Definition at line 649 of file cursoricon.c.

{
    CURSORINFO SafeCi;
    PSYSTEM_CURSORINFO CurInfo;
    NTSTATUS Status = STATUS_SUCCESS;
    PCURICON_OBJECT CurIcon;
    BOOL Ret = FALSE;
 
    TRACE("Enter NtUserGetCursorInfo\n");
    UserEnterShared();
 
    CurInfo = IntGetSysCursorInfo();
    CurIcon = (PCURICON_OBJECT)CurInfo->CurrentCursorObject;
 
    SafeCi.cbSize = sizeof(CURSORINFO);
    SafeCi.flags = ((CurIcon && CurInfo->ShowingCursor >= 0) ? CURSOR_SHOWING : 0);
    SafeCi.hCursor = (CurIcon ? UserHMGetHandle(CurIcon) : NULL);
 
    SafeCi.ptScreenPos = gpsi->ptCursor;
 
    _SEH2_TRY
    {
        if (pci->cbSize == sizeof(CURSORINFO))
        {
            ProbeForWrite(pci, sizeof(CURSORINFO), 1);
            RtlCopyMemory(pci, &SafeCi, sizeof(CURSORINFO));
            Ret = TRUE;
        }
        else
        {
            EngSetLastError(ERROR_INVALID_PARAMETER);
        }
    }
    _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
    {
        Status = _SEH2_GetExceptionCode();
    }
    _SEH2_END;
    if (!NT_SUCCESS(Status))
    {
        SetLastNtError(Status);
    }
 
    TRACE("Leave NtUserGetCursorInfo, ret=%i\n", Ret);
    UserLeave();
    return Ret;
}

Referenced by GetCursorInfo().

NtUserGetIconSize()

BOOL APIENTRY NtUserGetIconSize	(	HANDLE	hCurIcon,
		UINT	istepIfAniCur,
		PLONG	plcx,
		PLONG	plcy
	)

Definition at line 590 of file cursoricon.c.

{
    PCURICON_OBJECT CurIcon;
    NTSTATUS Status = STATUS_SUCCESS;
    BOOL bRet = FALSE;
 
    TRACE("Enter NtUserGetIconSize\n");
    UserEnterShared();
 
    if (!(CurIcon = UserGetCurIconObject(hCurIcon)))
    {
        goto cleanup;
    }
 
    if (CurIcon->CURSORF_flags & CURSORF_ACON)
    {
        /* Use first frame for animated cursors */
        PACON AniCurIcon = (PACON)CurIcon;
        CurIcon = AniCurIcon->aspcur[0];
        UserDereferenceObject(AniCurIcon);
        UserReferenceObject(CurIcon);
    }
 
    _SEH2_TRY
    {
        ProbeForWrite(plcx, sizeof(LONG), 1);
        *plcx = CurIcon->cx;
        ProbeForWrite(plcy, sizeof(LONG), 1);
        *plcy = CurIcon->cy;
    }
    _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
    {
        Status = _SEH2_GetExceptionCode();
    }
    _SEH2_END
 
    if (NT_SUCCESS(Status))
        bRet = TRUE;
    else
        SetLastNtError(Status); // Maybe not, test this
 
    UserDereferenceObject(CurIcon);
 
cleanup:
    TRACE("Leave NtUserGetIconSize, ret=%i\n", bRet);
    UserLeave();
    return bRet;
}

Referenced by get_icon_size().

NtUserSetCursor()

HCURSOR APIENTRY NtUserSetCursor

(

HCURSOR

hCursor

)

Definition at line 1049 of file cursoricon.c.

{
    PCURICON_OBJECT pcurOld, pcurNew;
    HCURSOR hOldCursor = NULL;
 
    TRACE("Enter NtUserSetCursor: %p\n", hCursor);
    UserEnterExclusive();
 
    if (hCursor)
    {
        pcurNew = UserGetCurIconObject(hCursor);
        if (!pcurNew)
        {
            EngSetLastError(ERROR_INVALID_CURSOR_HANDLE);
            goto leave;
        }
        pcurNew->CURSORF_flags |= CURSORF_CURRENT;
    }
    else
    {
        pcurNew = NULL;
    }
 
    pcurOld = UserSetCursor(pcurNew, FALSE);
 
    // If returning an old cursor than validate it, Justin Case!
    if ( pcurOld &&
        (pcurOld = UserGetObjectNoErr(gHandleTable, UserHMGetHandle(pcurOld), TYPE_CURSOR)))
    {
        hOldCursor = UserHMGetHandle(pcurOld);
    /*
        Problem:
 
        System Global Cursors start out having at least 2 lock counts. If a system
        cursor is the default cursor and is returned to the caller twice in its
        life, the count will reach zero. Causing an assert to occur in objects.
 
        This fixes a SeaMonkey crash while the mouse crosses a boundary.
     */
        if (pcurOld->CURSORF_flags & CURSORF_GLOBAL)
        {
           TRACE("Returning Global Cursor hcur %p\n",hOldCursor);
 
           /*if (pcurOld->head.cLockObj > 2) // Throttle down to 2.
           {
              UserDereferenceObject(pcurOld);
           }
 
           goto leave;*/
        }
 
        /* See if it was destroyed in the meantime */
        if (UserObjectInDestroy(hOldCursor))
            hOldCursor = NULL;
        pcurOld->CURSORF_flags &= ~CURSORF_CURRENT;
        UserDereferenceObject(pcurOld);
    }
 
leave:
    UserLeave();
    return hOldCursor;
}

Referenced by SetCursor().

NtUserSetCursorContents()

BOOL APIENTRY NtUserSetCursorContents	(	HANDLE	hCurIcon,
		PICONINFO	UnsafeIconInfo
	)

Definition at line 1119 of file cursoricon.c.

{
    FIXME(" is UNIMPLEMENTED.\n");
    return FALSE;
}

NtUserSetCursorIconData()

__kernel_entry BOOL APIENTRY NtUserSetCursorIconData	(	_In_ HCURSOR	hcursor,
		_In_opt_ PUNICODE_STRING	pustrModule,
		_In_opt_ PUNICODE_STRING	pustrRsrc,
		_In_ const CURSORDATA *	pCursorData
	)

Definition at line 1510 of file cursoricon.c.

{
    CURSORDATA cursordata;
    UNICODE_STRING ustrModule, ustrRsrc;
    _SEH2_VOLATILE PVOID pvBuffer;
    CURSORDATA* aspcur;
    DWORD* aicur;
    PINT ajifRate;
    UINT cjSize;
    NTSTATUS status;
    BOOL bResult = FALSE;
 
    TRACE("Enter NtUserSetCursorIconData\n");
 
    /* Initialize buffer, so we can handle cleanup */
    ustrRsrc.Buffer = NULL;
    ustrModule.Buffer = NULL;
    pvBuffer = NULL;
 
    _SEH2_TRY
    {
        /* Probe and capture the cursor data structure */
        ProbeForRead(pCursorData, sizeof(*pCursorData), 1);
        cursordata = *pCursorData;
 
        /* Check if this is an animated cursor */
        if (cursordata.CURSORF_flags & CURSORF_ACON)
        {
            /* Check of the range is ok */
            if ((cursordata.cpcur == 0) || (cursordata.cicur == 0) ||
                (cursordata.cpcur > 1000) || (cursordata.cicur > 1000))
            {
                ERR("Range error (cpcur = %u, cicur = %u)\n",
                    cursordata.cpcur, cursordata.cicur);
                goto Exit;
            }
 
            /* Calculate size: one cursor data structure for each frame,
               and a frame index and jiffies for each "step" */
            cjSize = (cursordata.cpcur * sizeof(CURSORDATA)) +
                     (cursordata.cicur * sizeof(DWORD)) +
                     (cursordata.cicur * sizeof(INT));
 
            /* Allocate a buffer */
            pvBuffer = ExAllocatePoolWithTag(PagedPool, cjSize, USERTAG_CURSOR);
            if (pvBuffer == NULL)
            {
                ERR("Failed to allocate memory (cpcur = %u, cicur = %u)\n",
                    cursordata.cpcur, cursordata.cicur);
                goto Exit;
            }
 
            /* Calculate the kernel mode pointers */
            aspcur = (CURSORDATA*)pvBuffer;
            aicur = (DWORD*)&aspcur[cursordata.cpcur];
            ajifRate = (INT*)&aicur[cursordata.cicur];
 
            /* Probe and copy aspcur */
            ProbeForRead(cursordata.aspcur, cursordata.cpcur * sizeof(CURSORDATA), 1);
            RtlCopyMemory(aspcur,
                          cursordata.aspcur,
                          cursordata.cpcur * sizeof(CURSORDATA));
 
            /* Probe and copy aicur */
            ProbeForRead(cursordata.aicur, cursordata.cicur * sizeof(DWORD), 1);
            RtlCopyMemory(aicur,
                          cursordata.aicur,
                          cursordata.cicur * sizeof(DWORD));
 
            /* Probe and copy ajifRate */
            ProbeForRead(cursordata.ajifRate, cursordata.cicur * sizeof(INT), 1);
            RtlCopyMemory(ajifRate,
                          cursordata.ajifRate,
                          cursordata.cicur * sizeof(INT));
 
            /* Set the new pointers */
            cursordata.aspcur = aspcur;
            cursordata.aicur = aicur;
            cursordata.ajifRate = ajifRate;
        }
        else
        {
            /* This is a standard cursor, we don't use the pointers */
            cursordata.aspcur = NULL;
            cursordata.aicur = NULL;
            cursordata.ajifRate = NULL;
        }
    }
    _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
    {
        SetLastNtError(_SEH2_GetExceptionCode());
        goto Exit;
    }
    _SEH2_END
 
    /* Check if we got a module name */
    if (pustrModule != NULL)
    {
        /* Capture the name */
        status = ProbeAndCaptureUnicodeString(&ustrModule, UserMode, pustrModule);
        if (!NT_SUCCESS(status))
        {
            ERR("Failed to copy pustrModule: status 0x%08lx\n", status);
            goto Exit;
        }
    }
 
    /* Check if we got a resource name */
    if (pustrRsrc != NULL)
    {
        /* We use this function, because INTRESOURCEs and ATOMs are the same */
        status = ProbeAndCaptureUnicodeStringOrAtom(&ustrRsrc, pustrRsrc);
        if (!NT_SUCCESS(status))
        {
            ERR("Failed to copy pustrRsrc: status 0x%08lx\n", status);
            goto Exit;
        }
    }
 
    /* Make sure the caller doesn't give us invalid flags */
    if (cursordata.CURSORF_flags & ~CURSORF_USER_MASK)
    {
        ERR("Invalid cursor flags: 0x%08lx\n", cursordata.CURSORF_flags);
        goto Exit;
    }
 
    /* Acquire the global user lock */
    UserEnterExclusive();
 
    /* Call the internal function */
    bResult = UserSetCursorIconData(hcursor,
                                    pustrModule ? &ustrModule : NULL,
                                    pustrRsrc ? &ustrRsrc : NULL,
                                    &cursordata);
 
    /* Release the global user lock */
    UserLeave();
 
Exit:
 
    /* Free the captured module name */
    if ((ustrModule.Buffer != NULL) && !IS_INTRESOURCE(ustrModule.Buffer))
    {
        ReleaseCapturedUnicodeString(&ustrModule, UserMode);
    }
 
    if (pvBuffer != NULL)
    {
        ExFreePoolWithTag(pvBuffer, USERTAG_CURSOR);
    }
 
    /* Additional cleanup on failure */
    if (bResult == FALSE)
    {
        if ((ustrRsrc.Buffer != NULL) &&
            !IS_INTRESOURCE(ustrRsrc.Buffer))
        {
            ExFreePoolWithTag(ustrRsrc.Buffer, TAG_STRING);
        }
    }
 
    TRACE("Leave NtUserSetCursorIconData, bResult = %i\n", bResult);
 
    return bResult;
}

Referenced by CreateIconFromResourceEx(), CreateIconIndirect(), CURSORICON_CopyImage(), CURSORICON_LoadFromFileW(), and CURSORICON_LoadImageW().

NtUserSetSystemCursor()

BOOL APIENTRY NtUserSetSystemCursor	(	HCURSOR	hcur,
		DWORD	id
	)

Definition at line 2201 of file cursoricon.c.

{
    PCURICON_OBJECT pcur, pcurOrig = NULL;
    int i;
    PPROCESSINFO ppi;
    BOOL Ret = FALSE;
    UserEnterExclusive();
 
    if (!CheckWinstaAttributeAccess(WINSTA_WRITEATTRIBUTES))
    {
        goto Exit;
    }
 
    if (hcur)
    {
        pcur = UserGetCurIconObject(hcur);
        if (!pcur)
        {
            EngSetLastError(ERROR_INVALID_CURSOR_HANDLE);
            goto Exit;
        }
 
        ppi = PsGetCurrentProcessWin32Process();
 
        for (i = 0 ; i < 16; i++)
        {
           if (gasyscur[i].type == id)
           {
              pcurOrig = gasyscur[i].handle;
 
              if (pcurOrig) break;
 
              if (ppi->W32PF_flags & W32PF_CREATEDWINORDC)
              {
                 gasyscur[i].handle = pcur;
                 pcur->CURSORF_flags |= CURSORF_GLOBAL;
                 pcur->head.ppi = NULL;
                 IntInsertCursorIntoList(pcur);
                 Ret = TRUE;
              }
              break;
           }
        }
        if (pcurOrig)
        {
           FIXME("Need to copy cursor data or do something! pcurOrig %p new pcur %p\n",pcurOrig,pcur);
        }
    }
Exit:
    UserLeave();
    return Ret;
}

Referenced by LoadSystemCursors(), and SetSystemCursor().

UserClipCursor()

BOOL APIENTRY UserClipCursor

(

RECTL *

prcl

)

Definition at line 700 of file cursoricon.c.

{
    PSYSTEM_CURSORINFO CurInfo;
    PWND DesktopWindow = NULL;
 
    if (!CheckWinstaAttributeAccess(WINSTA_WRITEATTRIBUTES))
    {
        return FALSE;
    }
 
    CurInfo = IntGetSysCursorInfo();
 
    DesktopWindow = UserGetDesktopWindow();
 
    if (prcl != NULL && DesktopWindow != NULL)
    {
        if (prcl->right < prcl->left || prcl->bottom < prcl->top)
        {
            EngSetLastError(ERROR_INVALID_PARAMETER);
            return FALSE;
        }
 
        CurInfo->bClipped = TRUE;
 
        /* Set nw cliping region. Note: we can't use RECTL_bIntersectRect because
           it sets rect to 0 0 0 0 when it's empty. For more info see monitor winetest */
        CurInfo->rcClip.left = max(prcl->left, DesktopWindow->rcWindow.left);
        CurInfo->rcClip.right = min(prcl->right, DesktopWindow->rcWindow.right);
        if (CurInfo->rcClip.right < CurInfo->rcClip.left)
            CurInfo->rcClip.right = CurInfo->rcClip.left;
 
        CurInfo->rcClip.top = max(prcl->top, DesktopWindow->rcWindow.top);
        CurInfo->rcClip.bottom = min(prcl->bottom, DesktopWindow->rcWindow.bottom);
        if (CurInfo->rcClip.bottom < CurInfo->rcClip.top)
            CurInfo->rcClip.bottom = CurInfo->rcClip.top;
 
        /* Make sure cursor is in clipping region */
        UserSetCursorPos(gpsi->ptCursor.x, gpsi->ptCursor.y, 0, 0, FALSE);
    }
    else
    {
        CurInfo->bClipped = FALSE;
    }
 
    return TRUE;
}

Referenced by DefWndDoSizeMove(), NtUserClipCursor(), and UserChangeDisplaySettings().

UserDrawIconEx()

BOOL UserDrawIconEx	(	HDC	hDc,
		INT	xLeft,
		INT	yTop,
		PCURICON_OBJECT	pIcon,
		INT	cxWidth,
		INT	cyHeight,
		UINT	istepIfAniCur,
		HBRUSH	hbrFlickerFreeDraw,
		UINT	diFlags
	)

Definition at line 1689 of file cursoricon.c.

{
    PSURFACE psurfDest, psurfMask, psurfColor; //, psurfOffScreen = NULL;
    PDC pdc = NULL;
    BOOL Ret = FALSE;
    HBITMAP hbmMask, hbmColor, hbmAlpha;
    BOOL bOffScreen;
    RECTL rcDest, rcSrc;
    CLIPOBJ* pdcClipObj = NULL;
    EXLATEOBJ exlo;
 
    /* Stupid case */
    if ((diFlags & DI_NORMAL) == 0)
    {
        ERR("DrawIconEx called without mask or color bitmap to draw.\n");
        return FALSE;
    }
 
    if (pIcon->CURSORF_flags & CURSORF_ACON)
    {
        ACON* pAcon = (ACON*)pIcon;
        if (istepIfAniCur >= pAcon->cicur)
        {
            ERR("NtUserDrawIconEx: istepIfAniCur too big!\n");
            return FALSE;
        }
        pIcon = pAcon->aspcur[pAcon->aicur[istepIfAniCur]];
    }
 
    hbmMask = pIcon->hbmMask;
    hbmColor = pIcon->hbmColor;
    hbmAlpha = pIcon->hbmAlpha;
 
    /*
     * Get our objects.
     * Shared locks are enough, we are only reading those bitmaps
     */
    psurfMask = SURFACE_ShareLockSurface(hbmMask);
    if (psurfMask == NULL)
    {
        ERR("Unable to lock the mask surface.\n");
        return FALSE;
    }
 
    /* Color bitmap is not mandatory */
    if (hbmColor == NULL)
    {
        /* But then the mask bitmap must have the information in it's bottom half */
        ASSERT(psurfMask->SurfObj.sizlBitmap.cy == 2*pIcon->cy);
        psurfColor = NULL;
    }
    else if ((psurfColor = SURFACE_ShareLockSurface(hbmColor)) == NULL)
    {
        ERR("Unable to lock the color bitmap.\n");
        SURFACE_ShareUnlockSurface(psurfMask);
        return FALSE;
    }
 
    pdc = DC_LockDc(hDc);
    if (!pdc)
    {
        ERR("Could not lock the destination DC.\n");
        SURFACE_ShareUnlockSurface(psurfMask);
        if (psurfColor) SURFACE_ShareUnlockSurface(psurfColor);
        return FALSE;
    }
 
    /* Fix width parameter, if needed */
    if (!cxWidth)
    {
        if (diFlags & DI_DEFAULTSIZE)
            cxWidth = is_icon(pIcon) ?
                UserGetSystemMetrics(SM_CXICON) : UserGetSystemMetrics(SM_CXCURSOR);
        else
            cxWidth = pIcon->cx;
    }
 
    /* Fix height parameter, if needed */
    if (!cyHeight)
    {
        if (diFlags & DI_DEFAULTSIZE)
            cyHeight = is_icon(pIcon) ?
                UserGetSystemMetrics(SM_CYICON) : UserGetSystemMetrics(SM_CYCURSOR);
        else
            cyHeight = pIcon->cy;
    }
 
    /* Calculate destination rectangle */
    RECTL_vSetRect(&rcDest, xLeft, yTop, xLeft + cxWidth, yTop + cyHeight);
    IntLPtoDP(pdc, (LPPOINT)&rcDest, 2);
    RECTL_vOffsetRect(&rcDest, pdc->ptlDCOrig.x, pdc->ptlDCOrig.y);
 
    /* Prepare the underlying surface */
    DC_vPrepareDCsForBlit(pdc, &rcDest, NULL, NULL);
 
    /* We now have our destination surface and rectangle */
    psurfDest = pdc->dclevel.pSurface;
 
    if (psurfDest == NULL)
    {
        /* Empty DC */
        DC_vFinishBlit(pdc, NULL);
        DC_UnlockDc(pdc);
        SURFACE_ShareUnlockSurface(psurfMask);
        if (psurfColor) SURFACE_ShareUnlockSurface(psurfColor);
        return FALSE;
    }
 
    /* Set source rect */
    RECTL_vSetRect(&rcSrc, 0, 0, pIcon->cx, pIcon->cy);
 
    /* Should we render off-screen? */
    bOffScreen = hbrFlickerFreeDraw &&
        (GDI_HANDLE_GET_TYPE(hbrFlickerFreeDraw) == GDI_OBJECT_TYPE_BRUSH);
 
    if (bOffScreen)
    {
        /* Yes: Allocate and paint the offscreen surface */
        EBRUSHOBJ eboFill;
        PBRUSH pbrush = BRUSH_ShareLockBrush(hbrFlickerFreeDraw);
 
        TRACE("Performing off-screen rendering.\n");
 
        if (!pbrush)
        {
            ERR("Failed to get brush object.\n");
            goto Cleanup;
        }
 
#if 0 //We lock the hdc surface during the whole function it makes no sense to use an offscreen surface for "flicker free" drawing
        psurfOffScreen = SURFACE_AllocSurface(STYPE_BITMAP,
            cxWidth, cyHeight, psurfDest->SurfObj.iBitmapFormat,
            0, 0, NULL);
        if (!psurfOffScreen)
        {
            ERR("Failed to allocate the off-screen surface.\n");
            BRUSH_ShareUnlockBrush(pbrush);
            goto Cleanup;
        }
 
        /* Paint the brush */
        EBRUSHOBJ_vInit(&eboFill, pbrush, psurfOffScreen, 0x00FFFFFF, 0, NULL);
        RECTL_vSetRect(&rcDest, 0, 0, cxWidth, cyHeight);
 
        Ret = IntEngBitBlt(&psurfOffScreen->SurfObj,
            NULL,
            NULL,
            NULL,
            NULL,
            &rcDest,
            NULL,
            NULL,
            &eboFill.BrushObject,
            &pbrush->ptOrigin,
            ROP4_PATCOPY);
 
        /* Clean up everything */
        EBRUSHOBJ_vCleanup(&eboFill);
        BRUSH_ShareUnlockBrush(pbrush);
 
        if (!Ret)
        {
            ERR("Failed to paint the off-screen surface.\n");
            goto Cleanup;
        }
 
        /* We now have our destination surface */
        psurfDest = psurfOffScreen;
#else
        pdcClipObj = (CLIPOBJ *)&pdc->co;
        /* Paint the brush */
        EBRUSHOBJ_vInit(&eboFill, pbrush, psurfDest, 0x00FFFFFF, 0, NULL);
 
        Ret = IntEngBitBlt(&psurfDest->SurfObj,
            NULL,
            NULL,
            pdcClipObj,
            NULL,
            &rcDest,
            NULL,
            NULL,
            &eboFill.BrushObject,
            &pbrush->ptOrigin,
            ROP4_PATCOPY);
 
        /* Clean up everything */
        EBRUSHOBJ_vCleanup(&eboFill);
        BRUSH_ShareUnlockBrush(pbrush);
 
        if (!Ret)
        {
            ERR("Failed to paint the off-screen surface.\n");
            goto Cleanup;
        }
#endif
    }
    else
    {
        /* We directly draw to the DC */
        TRACE("Performing on screen rendering.\n");
        pdcClipObj = (CLIPOBJ *)&pdc->co;
        // psurfOffScreen = NULL;
    }
 
    /* Now do the rendering */
    if (hbmAlpha && ((diFlags & DI_NORMAL) == DI_NORMAL))
    {
        BLENDOBJ blendobj = { {AC_SRC_OVER, 0, 255, AC_SRC_ALPHA } };
        PSURFACE psurf = NULL;
 
        psurf = SURFACE_ShareLockSurface(hbmAlpha);
        if (!psurf)
        {
            ERR("SURFACE_LockSurface failed!\n");
            goto NoAlpha;
        }
 
        /* Initialize color translation object */
        EXLATEOBJ_vInitialize(&exlo, psurf->ppal, psurfDest->ppal, 0xFFFFFFFF, 0xFFFFFFFF, 0);
 
        /* Now do it */
        Ret = IntEngAlphaBlend(&psurfDest->SurfObj,
                               &psurf->SurfObj,
                               pdcClipObj,
                               &exlo.xlo,
                               &rcDest,
                               &rcSrc,
                               &blendobj);
 
        EXLATEOBJ_vCleanup(&exlo);
        SURFACE_ShareUnlockSurface(psurf);
        if (Ret) goto done;
        ERR("NtGdiAlphaBlend failed!\n");
    }
NoAlpha:
    if (diFlags & DI_MASK)
    {
        DWORD rop4 = (diFlags & DI_IMAGE) ? ROP4_SRCAND : ROP4_SRCCOPY;
 
        EXLATEOBJ_vInitSrcMonoXlate(&exlo, psurfDest->ppal, 0x00FFFFFF, 0);
 
        Ret = IntEngStretchBlt(&psurfDest->SurfObj,
                               &psurfMask->SurfObj,
                               NULL,
                               pdcClipObj,
                               &exlo.xlo,
                               NULL,
                               &rcDest,
                               &rcSrc,
                               NULL,
                               NULL,
                               NULL,
                               rop4);
 
        EXLATEOBJ_vCleanup(&exlo);
 
        if (!Ret)
        {
            ERR("Failed to mask the bitmap data.\n");
            goto Cleanup;
        }
    }
 
    if (diFlags & DI_IMAGE)
    {
        if (psurfColor)
        {
            DWORD rop4 = (diFlags & DI_MASK) ? ROP4_SRCINVERT : ROP4_SRCCOPY ;
 
            EXLATEOBJ_vInitialize(&exlo, psurfColor->ppal, psurfDest->ppal, 0x00FFFFFF, 0x00FFFFFF, 0);
 
            Ret = IntEngStretchBlt(&psurfDest->SurfObj,
                                   &psurfColor->SurfObj,
                                   NULL,
                                   pdcClipObj,
                                   &exlo.xlo,
                                   NULL,
                                   &rcDest,
                                   &rcSrc,
                                   NULL,
                                   NULL,
                                   NULL,
                                   rop4);
 
            EXLATEOBJ_vCleanup(&exlo);
 
            if (!Ret)
            {
                ERR("Failed to render the icon bitmap.\n");
                goto Cleanup;
            }
        }
        else
        {
            /* Mask bitmap holds the information in its bottom half */
            DWORD rop4 = (diFlags & DI_MASK) ? ROP4_SRCINVERT : ROP4_SRCCOPY;
            RECTL_vOffsetRect(&rcSrc, 0, pIcon->cy);
 
            EXLATEOBJ_vInitSrcMonoXlate(&exlo, psurfDest->ppal, 0x00FFFFFF, 0);
 
            Ret = IntEngStretchBlt(&psurfDest->SurfObj,
                                   &psurfMask->SurfObj,
                                   NULL,
                                   pdcClipObj,
                                   &exlo.xlo,
                                   NULL,
                                   &rcDest,
                                   &rcSrc,
                                   NULL,
                                   NULL,
                                   NULL,
                                   rop4);
 
            EXLATEOBJ_vCleanup(&exlo);
 
            if (!Ret)
            {
                ERR("Failed to render the icon bitmap.\n");
                goto Cleanup;
            }
        }
    }
 
done:
#if 0
    /* We're done. Was it a double buffered draw ? */
    if (bOffScreen)
    {
        /* Yes. Draw it back to our DC */
        POINTL ptSrc = {0, 0};
 
        /* Calculate destination rectangle */
        RECTL_vSetRect(&rcDest, xLeft, yTop, xLeft + cxWidth, yTop + cyHeight);
        IntLPtoDP(pdc, (LPPOINT)&rcDest, 2);
        RECTL_vOffsetRect(&rcDest, pdc->ptlDCOrig.x, pdc->ptlDCOrig.y);
 
        /* Get the clip object */
        pdcClipObj = pdc->rosdc.CombinedClip;
 
        /* We now have our destination surface and rectangle */
        psurfDest = pdc->dclevel.pSurface;
 
        /* Color translation */
        EXLATEOBJ_vInitialize(&exlo, psurfOffScreen->ppal, psurfDest->ppal, 0x00FFFFFF, 0x00FFFFFF, 0);
 
        /* Blt it! */
        Ret = IntEngBitBlt(&psurfDest->SurfObj,
                           &psurfOffScreen->SurfObj,
                           NULL,
                           pdcClipObj,
                           &exlo.xlo,
                           &rcDest,
                           &ptSrc,
                           NULL,
                           NULL,
                           NULL,
                           ROP4_SRCCOPY);
 
        EXLATEOBJ_vCleanup(&exlo);
    }
#endif
Cleanup:
    if (pdc)
    {
        DC_vFinishBlit(pdc, NULL);
        DC_UnlockDc(pdc);
    }
 
#if 0
    /* Delete off screen rendering surface */
    if (psurfOffScreen)
        GDIOBJ_vDeleteObject(&psurfOffScreen->BaseObject);
#endif
 
    /* Unlock other surfaces */
    SURFACE_ShareUnlockSurface(psurfMask);
    if (psurfColor) SURFACE_ShareUnlockSurface(psurfColor);
 
    return Ret;
}

Referenced by IntDefWindowProc(), MENU_DrawBitmapItem(), NtUserDrawIconEx(), UserDrawCaption(), and UserDrawSysMenuButton().

UserGetCurIconObject()

PCURICON_OBJECT FASTCALL UserGetCurIconObject

(

HCURSOR

hCurIcon

)

Definition at line 200 of file cursoricon.c.

{
    PCURICON_OBJECT CurIcon;
 
    if (!hCurIcon)
    {
        EngSetLastError(ERROR_INVALID_CURSOR_HANDLE);
        return NULL;
    }
 
    if (UserObjectInDestroy(hCurIcon))
    {
        WARN("Requesting invalid/destroyed cursor.\n");
        EngSetLastError(ERROR_INVALID_CURSOR_HANDLE);
        return NULL;
    }
 
    CurIcon = (PCURICON_OBJECT)UserReferenceObjectByHandle(hCurIcon, TYPE_CURSOR);
    if (!CurIcon)
    {
        /* We never set ERROR_INVALID_ICON_HANDLE. lets hope noone ever checks for it */
        EngSetLastError(ERROR_INVALID_CURSOR_HANDLE);
        return NULL;
    }
 
    ASSERT(CurIcon->head.cLockObj >= 1);
    return CurIcon;
}

Referenced by _Success_(), DefWndDoSizeMove(), DesktopWindowProc(), IntCreateClass(), IntCreateWindow(), IntLoadSystenIcons(), IntSetAconData(), NtUserDestroyCursor(), NtUserDrawIconEx(), NtUserGetCursorFrameInfo(), NtUserGetIconSize(), NtUserSetCursor(), NtUserSetSystemCursor(), UserDrawCaption(), UserSetClassLongPtr(), and UserSetCursorIconData().

UserSetCursorIconData()

BOOL APIENTRY UserSetCursorIconData	(	_In_ HCURSOR	hcursor,
		_In_opt_ PUNICODE_STRING	pustrModule,
		_In_opt_ PUNICODE_STRING	pustrRsrc,
		_In_ PCURSORDATA	pcursordata
	)

Definition at line 1419 of file cursoricon.c.

{
    PCURICON_OBJECT pcur;
    ATOM atomModName;
    NTSTATUS status;
    BOOL bResult;
 
    /* Do we have a module name? */
    if (pustrModule != NULL)
    {
        /* Create an atom for the module name */
        status = RtlAddAtomToAtomTable(gAtomTable,
                                       pustrModule->Buffer,
                                       &atomModName);
        if (!NT_SUCCESS(status))
        {
            ERR("Failed to create atom from module name '%wZ': 0x%08lx\n",
                pustrModule, status);
            return FALSE;
        }
    }
    else
    {
        /* No module name atom */
        atomModName = 0;
    }
 
    /* Reference the cursor */
    pcur = UserGetCurIconObject(hcursor);
    if (pcur == NULL)
    {
        ERR("Failed to reference cursor %p\n", hcursor);
        bResult = FALSE;
        goto Exit;
    }
 
    /* Check if this is an acon */
    if (pcur->CURSORF_flags & CURSORF_ACON)
    {
        bResult = IntSetAconData((PACON)pcur,
                                 pustrRsrc,
                                 atomModName,
                                 pcursordata);
    }
    else
    {
        bResult = IntSetCursorData(pcur,
                                   pustrRsrc,
                                   atomModName,
                                   pcursordata);
    }
 
Exit:
 
    /* Check if we had success */
    if (bResult != FALSE)
    {
        /* Check if this is an LRSHARED cursor now */
        if (pcur->CURSORF_flags & CURSORF_LRSHARED)
        {
            /* Insert the cursor into the list. */
            IntInsertCursorIntoList(pcur);
        }
    }
    else
    {
        /* Cleanup on failure */
        if (atomModName != 0)
        {
            NT_VERIFY(NT_SUCCESS(RtlDeleteAtomFromAtomTable(gAtomTable, atomModName)));
        }
    }
 
    /* Dereference the cursor and return the result */
    if (pcur)
        UserDereferenceObject(pcur);
 
    return bResult;
}

Referenced by NtUserSetCursorIconData().

UserSetCursorPos()

BOOL UserSetCursorPos	(	INT	x,
		INT	y,
		DWORD	flags,
		ULONG_PTR	dwExtraInfo,
		BOOL	Hook
	)

Definition at line 238 of file cursoricon.c.

{
    PWND DesktopWindow;
    PSYSTEM_CURSORINFO CurInfo;
    MSG Msg;
    RECTL rcClip;
    POINT pt;
 
    if (!(DesktopWindow = UserGetDesktopWindow()))
    {
        return FALSE;
    }
 
    CurInfo = IntGetSysCursorInfo();
 
    /* Clip cursor position */
    if (!CurInfo->bClipped)
        rcClip = DesktopWindow->rcClient;
    else
        rcClip = CurInfo->rcClip;
 
    if (x >= rcClip.right)  x = rcClip.right - 1;
    if (x < rcClip.left)    x = rcClip.left;
    if (y >= rcClip.bottom) y = rcClip.bottom - 1;
    if (y < rcClip.top)     y = rcClip.top;
 
    /* Nothing to do if position did not actually change */
    if (x == gpsi->ptCursor.x && y == gpsi->ptCursor.y)
        return TRUE;
 
    pt.x = x;
    pt.y = y;
 
    /* 1. Generate a mouse move message, this sets the htEx and Track Window too */
    Msg.message = WM_MOUSEMOVE;
    Msg.wParam = UserGetMouseButtonsState();
    Msg.lParam = MAKELPARAM(x, y);
    Msg.pt = pt;
    co_MsqInsertMouseMessage(&Msg, flags, dwExtraInfo, Hook);
 
    /* 2. Store the new cursor position */
    gpsi->ptCursor = pt;
 
    return TRUE;
}

Referenced by DefWndDoSizeMove(), DefWndStartSizeMove(), NtUserCallTwoParam(), UserClipCursor(), and UserSendMouseInput().

Variable Documentation

gasyscur

SYSTEMCURICO gasyscur[]

Initial value:

= {
    {OCR_NORMAL,     NULL},
    {OCR_IBEAM,      NULL},
    {OCR_WAIT,       NULL},
    {OCR_CROSS,      NULL},
    {OCR_UP,         NULL},
    {OCR_ICON,       NULL},
    {OCR_SIZE,       NULL},
    {OCR_SIZENWSE,   NULL},
    {OCR_SIZENESW,   NULL},
    {OCR_SIZEWE,     NULL},
    {OCR_SIZENS,     NULL},
    {OCR_SIZEALL,    NULL},
    {OCR_NO,         NULL},
    {OCR_HAND,       NULL},
    {OCR_APPSTARTING,NULL},
    {OCR_HELP,       NULL},
    }

Definition at line 32 of file cursoricon.c.

Referenced by NtUserSetSystemCursor().

gasysico

SYSTEMCURICO gasysico[]

Initial value:

= {
    {OIC_SAMPLE, NULL},
    {OIC_HAND,   NULL},
    {OIC_QUES,   NULL},
    {OIC_BANG,   NULL},
    {OIC_NOTE,   NULL},
    {OIC_WINLOGO,NULL},
    }

Definition at line 54 of file cursoricon.c.

Referenced by IntLoadSystenIcons().

gcurFirst

PCURICON_OBJECT gcurFirst = NULL

Definition at line 27 of file cursoricon.c.

Referenced by IntInsertCursorIntoList(), IntRemoveCursorFromList(), and NtUserFindExistingCursorIcon().

gSysCursorInfo

SYSTEM_CURSORINFO gSysCursorInfo

Definition at line 25 of file cursoricon.c.

Referenced by InitCursorImpl(), and IntGetSysCursorInfo().