ldevobj.h File Reference

This graph shows which files directly or indirectly include this file:

Go to the source code of this file.

Classes
struct	_LDEVOBJ

Typedefs
typedef struct _LDEVOBJ	LDEVOBJ
typedef struct _LDEVOBJ *	PLDEVOBJ

Enumerations
enum	LDEVTYPE {   LDEV_DEVICE_DISPLAY = 1 , LDEV_DEVICE_PRINTER = 2 , LDEV_DEVICE_META = 3 , LDEV_DEVICE_MIRROR = 4 ,   LDEV_IMAGE = 5 , LDEV_FONT = 6 }

Functions
NTSTATUS NTAPI	InitLDEVImpl (VOID)
ULONG	LDEVOBJ_ulGetDriverModes (_In_ LPWSTR pwszDriverName, _In_ HANDLE hDriver, _Out_ PDEVMODEW *ppdm)
PLDEVOBJ	LDEVOBJ_pLoadInternal (_In_ PFN_DrvEnableDriver pfnEnableDriver, _In_ ULONG ldevtype)
PLDEVOBJ APIENTRY	LDEVOBJ_pLoadDriver (_In_z_ LPWSTR pwszDriverName, _In_ ULONG ldevtype)
BOOL	LDEVOBJ_bBuildDevmodeList (_Inout_ PGRAPHICS_DEVICE pGraphicsDevice)
BOOL	LDEVOBJ_bProbeAndCaptureDevmode (_Inout_ PGRAPHICS_DEVICE pGraphicsDevice, _In_ PDEVMODEW RequestedMode, _Out_ PDEVMODEW *pSelectedMode, _In_ BOOL bSearchClosestMode)
NTSTATUS APIENTRY	DriverEntry (_In_ PDRIVER_OBJECT DriverObject, _In_ PUNICODE_STRING RegistryPath)

Variables
IMAGE_DOS_HEADER	__ImageBase
static const unsigned	GDI_ENGINE_VERSION = DDI_DRIVER_VERSION_NT5_01

Typedef Documentation

LDEVOBJ

typedef struct _LDEVOBJ LDEVOBJ

PLDEVOBJ

typedef struct _LDEVOBJ * PLDEVOBJ

Enumeration Type Documentation

LDEVTYPE

enum LDEVTYPE

Enumerator
LDEV_DEVICE_DISPLAY
LDEV_DEVICE_PRINTER
LDEV_DEVICE_META
LDEV_DEVICE_MIRROR
LDEV_IMAGE
LDEV_FONT

Definition at line 6 of file ldevobj.h.

{
    LDEV_DEVICE_DISPLAY = 1,
    LDEV_DEVICE_PRINTER = 2,
    LDEV_DEVICE_META = 3,
    LDEV_DEVICE_MIRROR = 4,
    LDEV_IMAGE = 5,
    LDEV_FONT = 6,
} LDEVTYPE;

Function Documentation

DriverEntry()

NTSTATUS APIENTRY DriverEntry	(	_In_ PDRIVER_OBJECT	DriverObject,
		_In_ PUNICODE_STRING	RegistryPath
	)

Definition at line 1771 of file compbatt.c.

{
    /* Register add device routine */
    DriverObject->DriverExtension->AddDevice = CompBattAddDevice;
 
    /* Register other handlers */
    DriverObject->MajorFunction[IRP_MJ_CREATE] = CompBattOpenClose;
    DriverObject->MajorFunction[IRP_MJ_CLOSE] = CompBattOpenClose;
    DriverObject->MajorFunction[IRP_MJ_DEVICE_CONTROL] = CompBattIoctl;
    DriverObject->MajorFunction[IRP_MJ_POWER] = CompBattPowerDispatch;
    DriverObject->MajorFunction[IRP_MJ_SYSTEM_CONTROL] = CompBattSystemControl;
    DriverObject->MajorFunction[IRP_MJ_PNP] = CompBattPnpDispatch;
    return STATUS_SUCCESS;
}

InitLDEVImpl()

NTSTATUS NTAPI InitLDEVImpl

(

VOID

)

Private functions

Definition at line 30 of file ldevobj.c.

{
    ULONG cbSize;
 
    /* Initialize the LDEV list head */
    InitializeListHead(&gleLdevListHead);
 
    /* Initialize the loader lock */
    ghsemLDEVList = EngCreateSemaphore();
    if (!ghsemLDEVList)
    {
        ERR("Failed to create ghsemLDEVList\n");
        return STATUS_INSUFFICIENT_RESOURCES;
    }
 
    /* Allocate a LDEVOBJ for win32k */
    gpldevWin32k = ExAllocatePoolWithTag(PagedPool,
                                         sizeof(LDEVOBJ) +
                                         sizeof(SYSTEM_GDI_DRIVER_INFORMATION),
                                         GDITAG_LDEV);
    if (!gpldevWin32k)
    {
        return STATUS_NO_MEMORY;
    }
 
    /* Initialize the LDEVOBJ for win32k */
    gpldevWin32k->leLink.Flink = NULL;
    gpldevWin32k->leLink.Blink = NULL;
    gpldevWin32k->ldevtype = LDEV_DEVICE_DISPLAY;
    gpldevWin32k->cRefs = 1;
    gpldevWin32k->ulDriverVersion = GDI_ENGINE_VERSION;
    gpldevWin32k->pGdiDriverInfo = (PVOID)(gpldevWin32k + 1);
    RtlInitUnicodeString(&gpldevWin32k->pGdiDriverInfo->DriverName,
                         L"\\SystemRoot\\System32\\win32k.sys");
    gpldevWin32k->pGdiDriverInfo->ImageAddress = &__ImageBase;
    gpldevWin32k->pGdiDriverInfo->SectionPointer = NULL;
    gpldevWin32k->pGdiDriverInfo->EntryPoint = (PVOID)DriverEntry;
    gpldevWin32k->pGdiDriverInfo->ExportSectionPointer =
        RtlImageDirectoryEntryToData(&__ImageBase,
                                     TRUE,
                                     IMAGE_DIRECTORY_ENTRY_EXPORT,
                                     &cbSize);
    gpldevWin32k->pGdiDriverInfo->ImageLength = 0; // FIXME
 
    return STATUS_SUCCESS;
}

Referenced by DriverEntry().

LDEVOBJ_bBuildDevmodeList()

BOOL LDEVOBJ_bBuildDevmodeList

(

_Inout_ PGRAPHICS_DEVICE

pGraphicsDevice

)

Definition at line 565 of file ldevobj.c.

{
    PWSTR pwsz;
    PDEVMODEINFO pdminfo;
    PDEVMODEW pdm, pdmEnd;
    ULONG i, cModes = 0;
    ULONG cbSize, cbFull;
 
    if (pGraphicsDevice->pdevmodeInfo)
        return TRUE;
    ASSERT(pGraphicsDevice->pDevModeList == NULL);
 
    pwsz = pGraphicsDevice->pDiplayDrivers;
 
    /* Loop through the driver names
     * This is a REG_MULTI_SZ string */
    for (; *pwsz; pwsz += wcslen(pwsz) + 1)
    {
        /* Get the mode list from the driver */
        TRACE("Trying driver: %ls\n", pwsz);
        cbSize = LDEVOBJ_ulGetDriverModes(pwsz, pGraphicsDevice->DeviceObject, &pdm);
        if (!cbSize)
        {
            WARN("Driver %ls returned no valid mode\n", pwsz);
            continue;
        }
 
        /* Add space for the header */
        cbFull = cbSize + FIELD_OFFSET(DEVMODEINFO, adevmode);
 
        /* Allocate a buffer for the DEVMODE array */
        pdminfo = ExAllocatePoolWithTag(PagedPool, cbFull, GDITAG_DEVMODE);
        if (!pdminfo)
        {
            ERR("Could not allocate devmodeinfo\n");
            ExFreePoolWithTag(pdm, GDITAG_DEVMODE);
            continue;
        }
 
        pdminfo->cbdevmode = cbSize;
        RtlCopyMemory(pdminfo->adevmode, pdm, cbSize);
        ExFreePoolWithTag(pdm, GDITAG_DEVMODE);
 
        /* Attach the mode info to the device */
        pdminfo->pdmiNext = pGraphicsDevice->pdevmodeInfo;
        pGraphicsDevice->pdevmodeInfo = pdminfo;
 
        /* Loop all DEVMODEs */
        pdmEnd = (DEVMODEW*)((PCHAR)pdminfo->adevmode + pdminfo->cbdevmode);
        for (pdm = pdminfo->adevmode;
             (pdm + 1 <= pdmEnd) && (pdm->dmSize != 0);
             pdm = (DEVMODEW*)((PCHAR)pdm + pdm->dmSize + pdm->dmDriverExtra))
        {
            /* Count this DEVMODE */
            cModes++;
 
            /* Some drivers like the VBox driver don't fill the dmDeviceName
               with the name of the display driver. So fix that here. */
            RtlStringCbCopyW(pdm->dmDeviceName, sizeof(pdm->dmDeviceName), pwsz);
        }
    }
 
    if (!pGraphicsDevice->pdevmodeInfo || cModes == 0)
    {
        ERR("No devmodes\n");
        return FALSE;
    }
 
    /* Allocate an index buffer */
    pGraphicsDevice->cDevModes = cModes;
    pGraphicsDevice->pDevModeList = ExAllocatePoolWithTag(PagedPool,
                                                          cModes * sizeof(DEVMODEENTRY),
                                                          GDITAG_GDEVICE);
    if (!pGraphicsDevice->pDevModeList)
    {
        ERR("No devmode list\n");
        return FALSE;
    }
 
    /* Loop through all DEVMODEINFOs */
    for (pdminfo = pGraphicsDevice->pdevmodeInfo, i = 0;
         pdminfo;
         pdminfo = pdminfo->pdmiNext)
    {
        /* Calculate End of the DEVMODEs */
        pdmEnd = (DEVMODEW*)((PCHAR)pdminfo->adevmode + pdminfo->cbdevmode);
 
        /* Loop through the DEVMODEs */
        for (pdm = pdminfo->adevmode;
             (pdm + 1 <= pdmEnd) && (pdm->dmSize != 0);
             pdm = (PDEVMODEW)((PCHAR)pdm + pdm->dmSize + pdm->dmDriverExtra))
        {
            TRACE("    %S has mode %lux%lux%lu(%lu Hz)\n",
                  pdm->dmDeviceName,
                  pdm->dmPelsWidth,
                  pdm->dmPelsHeight,
                  pdm->dmBitsPerPel,
                  pdm->dmDisplayFrequency);
 
            /* Initialize the entry */
            pGraphicsDevice->pDevModeList[i].dwFlags = 0;
            pGraphicsDevice->pDevModeList[i].pdm = pdm;
            i++;
        }
    }
    TRACE("Prepared %lu modes for %ls\n", pGraphicsDevice->cDevModes, pGraphicsDevice->pwszDescription);
    return TRUE;
}

Referenced by LDEVOBJ_bProbeAndCaptureDevmode(), and PDEVOBJ_vRefreshModeList().

LDEVOBJ_bProbeAndCaptureDevmode()

BOOL LDEVOBJ_bProbeAndCaptureDevmode	(	_Inout_ PGRAPHICS_DEVICE	pGraphicsDevice,
		_In_ PDEVMODEW	RequestedMode,
		_Out_ PDEVMODEW *	pSelectedMode,
		_In_ BOOL	bSearchClosestMode
	)

Definition at line 738 of file ldevobj.c.

{
    DEVMODEW dmSearch;
    PDEVMODEW pdmCurrent, pdm, pdmSelected = NULL;
    ULONG i;
    ULONG ulVirtualWidth = 0, ulVirtualHeight = 0;
    BOOL bResult = TRUE;
    NTSTATUS Status;
 
    if (!LDEVOBJ_bBuildDevmodeList(pGraphicsDevice))
        return FALSE;
 
    /* At first, load information from registry */
    RtlZeroMemory(&dmSearch, sizeof(dmSearch));
    Status = EngpGetDisplayDriverParameters(pGraphicsDevice, &dmSearch);
    if (!NT_SUCCESS(Status))
    {
        ERR("EngpGetDisplayDriverParameters() failed with status 0x%08x\n", Status);
        return FALSE;
    }
 
    /* Override values with the new ones provided */
 
    _SEH2_TRY
    {
        bSearchClosestMode |= RequestedMode->dmFields == 0;
 
        /* Copy standard fields (if provided) */
        if (RequestedMode->dmFields & DM_BITSPERPEL && RequestedMode->dmBitsPerPel != 0)
            dmSearch.dmBitsPerPel = RequestedMode->dmBitsPerPel;
        if (RequestedMode->dmFields & DM_PELSWIDTH && RequestedMode->dmPelsWidth != 0)
            dmSearch.dmPelsWidth = RequestedMode->dmPelsWidth;
        if (RequestedMode->dmFields & DM_PELSHEIGHT && RequestedMode->dmPelsHeight != 0)
            dmSearch.dmPelsHeight = RequestedMode->dmPelsHeight;
        if (RequestedMode->dmFields & DM_DISPLAYFREQUENCY && RequestedMode->dmDisplayFrequency != 0)
            dmSearch.dmDisplayFrequency = RequestedMode->dmDisplayFrequency;
 
        if ((RequestedMode->dmFields & (DM_PANNINGWIDTH | DM_PANNINGHEIGHT)) == (DM_PANNINGWIDTH | DM_PANNINGHEIGHT) &&
            RequestedMode->dmPanningWidth != 0 && RequestedMode->dmPanningHeight != 0 &&
            RequestedMode->dmPanningWidth < dmSearch.dmPelsWidth &&
            RequestedMode->dmPanningHeight < dmSearch.dmPelsHeight)
        {
            /* Get new panning values */
            ulVirtualWidth = RequestedMode->dmPelsWidth;
            ulVirtualHeight = RequestedMode->dmPelsHeight;
            dmSearch.dmPelsWidth = RequestedMode->dmPanningWidth;
            dmSearch.dmPelsHeight = RequestedMode->dmPanningHeight;
        }
        else if (dmSearch.dmPanningWidth != 0 && dmSearch.dmPanningHeight != 0 &&
                 dmSearch.dmPanningWidth < dmSearch.dmPelsWidth &&
                 dmSearch.dmPanningHeight < dmSearch.dmPelsHeight)
        {
            /* Keep existing panning values */
            ulVirtualWidth = dmSearch.dmPelsWidth;
            ulVirtualHeight = dmSearch.dmPelsHeight;
            dmSearch.dmPelsWidth = dmSearch.dmPanningWidth;
            dmSearch.dmPelsHeight = dmSearch.dmPanningHeight;
        }
    }
    _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
    {
        bResult = FALSE;
    }
    _SEH2_END;
 
    if (!bResult)
        return FALSE;
 
    if (LDEVOBJ_bGetClosestMode(pGraphicsDevice, &dmSearch, &pdmSelected))
    {
        if (bSearchClosestMode)
        {
            /* Ok, found a closest mode. Update search */
            dmSearch.dmBitsPerPel = pdmSelected->dmBitsPerPel;
            dmSearch.dmPelsWidth = pdmSelected->dmPelsWidth;
            dmSearch.dmPelsHeight = pdmSelected->dmPelsHeight;
            dmSearch.dmDisplayFrequency = pdmSelected->dmDisplayFrequency;
        }
        else
        {
            /* Only update not provided fields */
            _SEH2_TRY
            {
                if (!(RequestedMode->dmFields & DM_BITSPERPEL) || RequestedMode->dmBitsPerPel == 0)
                    dmSearch.dmBitsPerPel = pdmSelected->dmBitsPerPel;
                if (!(RequestedMode->dmFields & DM_PELSWIDTH) || RequestedMode->dmPelsWidth == 0)
                    dmSearch.dmPelsWidth = pdmSelected->dmPelsWidth;
                if (!(RequestedMode->dmFields & DM_PELSHEIGHT) || RequestedMode->dmPelsHeight == 0)
                    dmSearch.dmPelsHeight = pdmSelected->dmPelsHeight;
                if (!(RequestedMode->dmFields & DM_DISPLAYFREQUENCY) || RequestedMode->dmDisplayFrequency == 0)
                    dmSearch.dmDisplayFrequency = pdmSelected->dmDisplayFrequency;
            }
            _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
            {
                bResult = FALSE;
            }
            _SEH2_END;
 
            if (!bResult)
                return FALSE;
        }
    }
 
    /* Now, search the exact mode to return to caller */
    for (i = 0; i < pGraphicsDevice->cDevModes; i++)
    {
        pdmCurrent = pGraphicsDevice->pDevModeList[i].pdm;
 
        /* For now, we only need those */
        if (pdmCurrent->dmBitsPerPel != dmSearch.dmBitsPerPel)
            continue;
        if (pdmCurrent->dmPelsWidth != dmSearch.dmPelsWidth)
            continue;
        if (pdmCurrent->dmPelsHeight != dmSearch.dmPelsHeight)
            continue;
        if (pdmCurrent->dmDisplayFrequency != dmSearch.dmDisplayFrequency)
            continue;
 
        pdmSelected = pdmCurrent;
        break;
    }
 
    if (!pdmSelected)
    {
        ERR("Requested mode not found (%dx%dx%d %d Hz)\n",
            dmSearch.dmPelsWidth,
            dmSearch.dmPelsHeight,
            dmSearch.dmBitsPerPel,
            dmSearch.dmDisplayFrequency);
        return FALSE;
    }
 
    /* Allocate memory for output */
    pdm = ExAllocatePoolZero(PagedPool, pdmSelected->dmSize + pdmSelected->dmDriverExtra, GDITAG_DEVMODE);
    if (!pdm)
        return FALSE;
 
    /* Copy selected mode */
    RtlCopyMemory(pdm, pdmSelected, pdmSelected->dmSize);
    RtlCopyMemory((PVOID)((ULONG_PTR)pdm + pdm->dmSize),
                  (PVOID)((ULONG_PTR)pdmSelected + pdmSelected->dmSize),
                  pdmSelected->dmDriverExtra);
 
    /* Add back panning */
    if (ulVirtualWidth != 0 && ulVirtualHeight != 0 &&
        pdm->dmPelsWidth < ulVirtualWidth &&
        pdm->dmPelsHeight < ulVirtualHeight)
    {
        pdm->dmFields |= DM_PANNINGWIDTH | DM_PANNINGHEIGHT;
        pdm->dmPanningWidth = pdm->dmPelsWidth;
        pdm->dmPanningHeight = pdm->dmPelsHeight;
        pdm->dmPelsWidth = ulVirtualWidth;
        pdm->dmPelsHeight = ulVirtualHeight;
    }
 
    *pSelectedMode = pdm;
    return TRUE;
}

Referenced by MDEVOBJ_Create(), PDEVOBJ_lChangeDisplaySettings(), and UserChangeDisplaySettings().

LDEVOBJ_pLoadDriver()

PLDEVOBJ APIENTRY LDEVOBJ_pLoadDriver	(	_In_z_ LPWSTR	pwszDriverName,
		_In_ ULONG	ldevtype
	)

Definition at line 347 of file ldevobj.c.

{
    WCHAR acwBuffer[MAX_PATH];
    PLIST_ENTRY pleLink;
    PLDEVOBJ pldev;
    UNICODE_STRING strDriverName;
    SIZE_T cwcLength;
    LPWSTR pwsz;
 
    TRACE("LDEVOBJ_pLoadDriver(%ls, %lu)\n", pwszDriverName, ldevtype);
    ASSERT(pwszDriverName);
 
    /* Initialize buffer for the the driver name */
    RtlInitEmptyUnicodeString(&strDriverName, acwBuffer, sizeof(acwBuffer));
 
    /* Start path with systemroot */
    RtlAppendUnicodeToString(&strDriverName, L"\\SystemRoot\\System32\\");
 
    /* Get Length of given string */
    cwcLength = wcslen(pwszDriverName);
 
    /* Check if we have a system32 path given */
    pwsz = pwszDriverName + cwcLength;
    while (pwsz > pwszDriverName)
    {
        if ((*pwsz == L'\\') && (_wcsnicmp(pwsz, L"\\system32\\", 10) == 0))
        {
            /* Driver name starts after system32 */
            pwsz += 10;
            break;
        }
        pwsz--;
    }
 
    /* Append the driver name */
    RtlAppendUnicodeToString(&strDriverName, pwsz);
 
    /* MSDN says "The driver must include this suffix in the pwszDriver string."
       But in fact it's optional. The function can also load .sys files without
       appending the .dll extension. */
    if ((cwcLength < 4) ||
        ((_wcsnicmp(pwszDriverName + cwcLength - 4, L".dll", 4) != 0) &&
         (_wcsnicmp(pwszDriverName + cwcLength - 4, L".sys", 4) != 0)) )
    {
        /* Append the .dll suffix */
        RtlAppendUnicodeToString(&strDriverName, L".dll");
    }
 
    /* Lock loader */
    EngAcquireSemaphore(ghsemLDEVList);
 
    /* Search the List of LDEVS for the driver name */
    for (pleLink = gleLdevListHead.Flink;
         pleLink != &gleLdevListHead;
         pleLink = pleLink->Flink)
    {
        pldev = CONTAINING_RECORD(pleLink, LDEVOBJ, leLink);
 
        /* Check if the ldev is associated with a file */
        if (pldev->pGdiDriverInfo)
        {
            /* Check for match (case insensitive) */
            if (RtlEqualUnicodeString(&pldev->pGdiDriverInfo->DriverName, &strDriverName, TRUE))
            {
                /* Image found in LDEV list */
                break;
            }
        }
    }
 
    /* Did we find one? */
    if (pleLink == &gleLdevListHead)
    {
        /* No, allocate a new LDEVOBJ */
        pldev = LDEVOBJ_AllocLDEV(ldevtype);
        if (!pldev)
        {
            ERR("Could not allocate LDEV\n");
            goto leave;
        }
 
        /* Load the image */
        if (!LDEVOBJ_bLoadImage(pldev, &strDriverName))
        {
            LDEVOBJ_vFreeLDEV(pldev);
            pldev = NULL;
            ERR("LDEVOBJ_bLoadImage failed\n");
            goto leave;
        }
 
        /* Load the driver */
        if (!LDEVOBJ_bEnableDriver(pldev, pldev->pGdiDriverInfo->EntryPoint))
        {
            ERR("LDEVOBJ_bEnableDriver failed\n");
 
            /* Unload the image. */
            if (LDEVOBJ_bUnloadImage(pldev))
                LDEVOBJ_vFreeLDEV(pldev);
            else
                ERR("Could not unload driver. Leaking memory\n");
            pldev = NULL;
            goto leave;
        }
 
        /* Insert the LDEV into the global list */
        InsertHeadList(&gleLdevListHead, &pldev->leLink);
    }
 
    /* Increase ref count */
    pldev->cRefs++;
 
leave:
    /* Unlock loader */
    EngReleaseSemaphore(ghsemLDEVList);
 
    TRACE("LDEVOBJ_pLoadDriver returning %p\n", pldev);
    return pldev;
}

Referenced by EngLoadImage(), LDEVOBJ_ulGetDriverModes(), and PDEVOBJ_Create().

LDEVOBJ_pLoadInternal()

PLDEVOBJ LDEVOBJ_pLoadInternal	(	_In_ PFN_DrvEnableDriver	pfnEnableDriver,
		_In_ ULONG	ldevtype
	)

Definition at line 303 of file ldevobj.c.

{
    PLDEVOBJ pldev;
 
    TRACE("LDEVOBJ_pLoadInternal(%lu)\n", ldevtype);
 
    /* Lock loader */
    EngAcquireSemaphore(ghsemLDEVList);
 
    /* Allocate a new LDEVOBJ */
    pldev = LDEVOBJ_AllocLDEV(ldevtype);
    if (!pldev)
    {
        ERR("Could not allocate LDEV\n");
        goto leave;
    }
 
    /* Load the driver */
    if (!LDEVOBJ_bEnableDriver(pldev, pfnEnableDriver))
    {
        ERR("LDEVOBJ_bEnableDriver failed\n");
        LDEVOBJ_vFreeLDEV(pldev);
        pldev = NULL;
        goto leave;
    }
 
    /* Insert the LDEV into the global list */
    InsertHeadList(&gleLdevListHead, &pldev->leLink);
 
    /* Increase ref count */
    pldev->cRefs++;
 
leave:
    /* Unlock loader */
    EngReleaseSemaphore(ghsemLDEVList);
 
    TRACE("LDEVOBJ_pLoadInternal returning %p\n", pldev);
    return pldev;
}

Referenced by PDEVOBJ_Create().

LDEVOBJ_ulGetDriverModes()

ULONG LDEVOBJ_ulGetDriverModes	(	_In_ LPWSTR	pwszDriverName,
		_In_ HANDLE	hDriver,
		_Out_ PDEVMODEW *	ppdm
	)

Definition at line 511 of file ldevobj.c.

{
    PLDEVOBJ pldev = NULL;
    ULONG cbSize = 0;
    PDEVMODEW pdm = NULL;
 
    TRACE("LDEVOBJ_ulGetDriverModes('%ls', %p)\n", pwszDriverName, hDriver);
 
    pldev = LDEVOBJ_pLoadDriver(pwszDriverName, LDEV_DEVICE_DISPLAY);
    if (!pldev)
        goto cleanup;
 
    /* Mirror drivers may omit this function */
    if (!pldev->pfn.GetModes)
        goto cleanup;
 
    /* Call the driver to get the required size */
    cbSize = pldev->pfn.GetModes(hDriver, 0, NULL);
    if (!cbSize)
    {
        ERR("DrvGetModes returned 0\n");
        goto cleanup;
    }
 
    /* Allocate a buffer for the DEVMODE array */
    pdm = ExAllocatePoolWithTag(PagedPool, cbSize, GDITAG_DEVMODE);
    if (!pdm)
    {
        ERR("Could not allocate devmodeinfo\n");
        goto cleanup;
    }
 
    /* Call the driver again to fill the buffer */
    cbSize = pldev->pfn.GetModes(hDriver, cbSize, pdm);
    if (!cbSize)
    {
        /* Could not get modes */
        ERR("DrvrGetModes returned 0 on second call\n");
        ExFreePoolWithTag(pdm, GDITAG_DEVMODE);
        pdm = NULL;
    }
 
cleanup:
    if (pldev)
        LDEVOBJ_vDereference(pldev);
 
    *ppdm = pdm;
    return cbSize;
}

Referenced by LDEVOBJ_bBuildDevmodeList().

Variable Documentation

__ImageBase

IMAGE_DOS_HEADER __ImageBase

extern

GDI_ENGINE_VERSION

const unsigned GDI_ENGINE_VERSION = DDI_DRIVER_VERSION_NT5_01

static

Definition at line 4 of file ldevobj.h.

Referenced by InitLDEVImpl(), and LDEVOBJ_bEnableDriver().