wingl.c File Reference

#include <win32k.h>
#include <debug.h>

Include dependency graph for wingl.c:

Go to the source code of this file.

Macros
#define	NDEBUG

Functions
static INT FASTCALL	IntGetipfdDevMax (PDC pdc)
	_Success_ (return !=0)
BOOL APIENTRY	NtGdiSetPixelFormat (_In_ HDC hdc, _In_ INT ipfd)
BOOL APIENTRY	NtGdiSwapBuffers (_In_ HDC hdc)

Macro Definition Documentation

NDEBUG

#define NDEBUG

Definition at line 11 of file wingl.c.

Function Documentation

_Success_()

_Success_

(

return !

= 0

)

Definition at line 41 of file wingl.c.

{
    PDC pdc;
    PPDEVOBJ ppdev;
    INT Ret = 0;
    PIXELFORMATDESCRIPTOR pfdSafe;
 
    if ((ppfd == NULL) && (cjpfd != 0)) return 0;
 
    pdc = DC_LockDc(hdc);
    if (!pdc)
    {
        EngSetLastError(ERROR_INVALID_HANDLE);
        return 0;
    }
 
    if (!pdc->ipfdDevMax)
    {
        if (!IntGetipfdDevMax(pdc))
        {
            /* EngSetLastError ? */
            goto Exit;
        }
    }
 
    if (!ppfd)
    {
        Ret = pdc->ipfdDevMax;
        goto Exit;
    }
 
    if ((ipfd < 1) || (ipfd > pdc->ipfdDevMax))
    {
        EngSetLastError(ERROR_INVALID_PARAMETER);
        goto Exit;
    }
 
    ppdev = pdc->ppdev;
 
    if (ppdev->flFlags & PDEV_META_DEVICE)
    {
        UNIMPLEMENTED;
        goto Exit;
    }
 
    if (ppdev->DriverFunctions.DescribePixelFormat)
    {
        Ret = ppdev->DriverFunctions.DescribePixelFormat(
                                                    ppdev->dhpdev,
                                                    ipfd,
                                                    sizeof(pfdSafe),
                                                    &pfdSafe);
    }
 
    if (Ret && cjpfd)
    {
        _SEH2_TRY
        {
            cjpfd = min(cjpfd, sizeof(PIXELFORMATDESCRIPTOR));
            ProbeForWrite(ppfd, cjpfd, 1);
            RtlCopyMemory(ppfd, &pfdSafe, cjpfd);
        }
        _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
        {
            SetLastNtError(_SEH2_GetExceptionCode());
        }
        _SEH2_END;
    }
 
Exit:
    DC_UnlockDc(pdc);
    return Ret;
}

IntGetipfdDevMax()

static INT FASTCALL IntGetipfdDevMax ( PDC  pdc )

static

Definition at line 17 of file wingl.c.

{
    INT Ret = 0;
    PPDEVOBJ ppdev = pdc->ppdev;
 
    if (ppdev->flFlags & PDEV_META_DEVICE)
    {
        return 0;
    }
 
    if (ppdev->DriverFunctions.DescribePixelFormat)
    {
        Ret = ppdev->DriverFunctions.DescribePixelFormat(
                                                ppdev->dhpdev,
                                                1,
                                                0,
                                                NULL);
    }
 
    if (Ret) pdc->ipfdDevMax = Ret;
 
    return Ret;
}

Referenced by _Success_(), and NtGdiSetPixelFormat().

NtGdiSetPixelFormat()

BOOL APIENTRY NtGdiSetPixelFormat	(	_In_ HDC	hdc,
		_In_ INT	ipfd
	)

Definition at line 126 of file wingl.c.

{
    PDC pdc;
    PPDEVOBJ ppdev;
    HWND hWnd;
    PWNDOBJ pWndObj;
    SURFOBJ *pso = NULL;
    BOOL Ret = FALSE;
 
    DPRINT1("Setting pixel format from win32k!\n");
 
    pdc = DC_LockDc(hdc);
    if (!pdc)
    {
        EngSetLastError(ERROR_INVALID_HANDLE);
        return FALSE;
    }
 
    if (!pdc->ipfdDevMax)
        IntGetipfdDevMax(pdc);
 
    if ( ipfd < 1 ||
        ipfd > pdc->ipfdDevMax )
    {
        EngSetLastError(ERROR_INVALID_PARAMETER);
        goto Exit;
    }
 
    UserEnterExclusive();
    hWnd = UserGethWnd(hdc, &pWndObj);
    UserLeave();
 
    if (!hWnd)
    {
        EngSetLastError(ERROR_INVALID_WINDOW_STYLE);
        goto Exit;
    }
 
    ppdev = pdc->ppdev;
 
    /*
        WndObj is needed so exit on NULL pointer.
    */
    if (pWndObj)
        pso = pWndObj->psoOwner;
    else
    {
        EngSetLastError(ERROR_INVALID_PIXEL_FORMAT);
        goto Exit;
    }
 
    if (ppdev->flFlags & PDEV_META_DEVICE)
    {
        UNIMPLEMENTED;
        goto Exit;
    }
 
    if (ppdev->DriverFunctions.SetPixelFormat)
    {
        Ret = ppdev->DriverFunctions.SetPixelFormat(
                                                pso,
                                                ipfd,
                                                hWnd);
    }
 
Exit:
    DC_UnlockDc(pdc);
    return Ret;
}

NtGdiSwapBuffers()

BOOL APIENTRY NtGdiSwapBuffers

(

_In_ HDC

hdc

)

Definition at line 200 of file wingl.c.

{
    PDC pdc;
    PPDEVOBJ ppdev;
    HWND hWnd;
    PWNDOBJ pWndObj;
    SURFOBJ *pso = NULL;
    BOOL Ret = FALSE;
 
    pdc = DC_LockDc(hdc);
    if (!pdc)
    {
        EngSetLastError(ERROR_INVALID_HANDLE);
        return FALSE;
    }
 
    UserEnterExclusive();
    hWnd = UserGethWnd(hdc, &pWndObj);
    UserLeave();
 
    if (!hWnd)
    {
        EngSetLastError(ERROR_INVALID_WINDOW_STYLE);
        goto Exit;
    }
 
    ppdev = pdc->ppdev;
 
    /*
        WndObj is needed so exit on NULL pointer.
    */
    if (pWndObj)
        pso = pWndObj->psoOwner;
    else
    {
        EngSetLastError(ERROR_INVALID_PIXEL_FORMAT);
        goto Exit;
    }
 
    if (ppdev->flFlags & PDEV_META_DEVICE)
    {
        UNIMPLEMENTED;
        goto Exit;
    }
 
    if (ppdev->DriverFunctions.SwapBuffers)
    {
        Ret = ppdev->DriverFunctions.SwapBuffers(pso, pWndObj);
    }
 
Exit:
    DC_UnlockDc(pdc);
    return Ret;
}