C++ (Cpp) GreCreateDIBitmapInternal Examples

Example #1

File: clipboard.c Project: CSRedRat/reactos-playground

static VOID WINAPI
IntSynthesizeBitmap(PWINSTATION_OBJECT pWinStaObj, PCLIP pBmEl)
{
    HDC hdc = NULL;
    PBITMAPINFO pBmi, pConvertedBmi = NULL;
    HBITMAP hBm = NULL;
    PCLIPBOARDDATA pMemObj;
    PCLIP pDibEl;
    ULONG Offset;

    TRACE("IntSynthesizeBitmap(%p, %p)\n", pWinStaObj, pBmEl);

    pDibEl = IntIsFormatAvailable(pWinStaObj, CF_DIB);
    ASSERT(pDibEl && !IS_DATA_SYNTHESIZED(pDibEl));
    if(!pDibEl->fGlobalHandle)
        return;

    pMemObj = (PCLIPBOARDDATA)UserGetObject(gHandleTable, pDibEl->hData, TYPE_CLIPDATA);
    if (!pMemObj)
        return;

	pBmi = (BITMAPINFO*)pMemObj->Data;

    if (pMemObj->cbData < sizeof(DWORD) && pMemObj->cbData < pBmi->bmiHeader.biSize)
        goto cleanup;

    pConvertedBmi = DIB_ConvertBitmapInfo(pBmi, DIB_RGB_COLORS);
    if (!pConvertedBmi)
        goto cleanup;

    Offset = DIB_BitmapInfoSize(pBmi, DIB_RGB_COLORS);

    hdc = UserGetDCEx(NULL, NULL, DCX_USESTYLE);
    if (!hdc)
        goto cleanup;

    hBm = GreCreateDIBitmapInternal(hdc,
                                    pConvertedBmi->bmiHeader.biWidth,
                                    pConvertedBmi->bmiHeader.biHeight,
                                    CBM_INIT,
                                    pMemObj->Data + Offset,
                                    pConvertedBmi,
                                    DIB_RGB_COLORS,
                                    0,
                                    pMemObj->cbData - Offset,
                                    0);

    if (hBm)
    {
        GreSetObjectOwner(hBm, GDI_OBJ_HMGR_PUBLIC);
        pBmEl->hData = hBm;
    }

cleanup:
    if (hdc)
        UserReleaseDC(NULL, hdc, FALSE);

    if (pConvertedBmi)
        DIB_FreeConvertedBitmapInfo(pConvertedBmi, pBmi, -1);
}

Example #2

File: clipboard.c Project: HBelusca/NasuTek-Odyssey

HANDLE FASTCALL
renderBITMAPfromDIB(LPBYTE pDIB)
{
    HDC hdc;
    HBITMAP hbitmap;
    PBITMAPINFO pBmi, pConvertedBmi = NULL;
    NTSTATUS Status ;
	UINT offset = 0; /* Stupid compiler */

	pBmi = (BITMAPINFO*)pDIB;

    //hdc = UserGetDCEx(NULL, NULL, DCX_USESTYLE);
    hdc = UserGetDCEx(ClipboardWindow, NULL, DCX_USESTYLE);

    /* Probe it */
    _SEH2_TRY
    {
        ProbeForRead(&pBmi->bmiHeader.biSize, sizeof(DWORD), 1);
		ProbeForRead(pBmi, pBmi->bmiHeader.biSize, 1);
		ProbeForRead(pBmi, DIB_BitmapInfoSize(pBmi, DIB_RGB_COLORS), 1);
		pConvertedBmi = DIB_ConvertBitmapInfo(pBmi, DIB_RGB_COLORS);
		if(!pConvertedBmi)
		{
			Status = STATUS_INVALID_PARAMETER;
		}
		else
		{
			offset = DIB_BitmapInfoSize((BITMAPINFO*)pBmi, DIB_RGB_COLORS);
			ProbeForRead(pDIB + offset, pConvertedBmi->bmiHeader.biSizeImage, 1);
		}
    }
    _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
    {
        Status = _SEH2_GetExceptionCode();
    }
    _SEH2_END

    if(!NT_SUCCESS(Status))
    {
        UserReleaseDC(ClipboardWindow, hdc, FALSE);
        return NULL;
    }

    hbitmap = GreCreateDIBitmapInternal(hdc,
                                        pConvertedBmi->bmiHeader.biWidth,
                                        pConvertedBmi->bmiHeader.biHeight,
                                        CBM_INIT,
                                        pDIB+offset,
                                        pConvertedBmi,
                                        DIB_RGB_COLORS,
                                        0,
                                        0);
    //UserReleaseDC(NULL, hdc, FALSE);
    UserReleaseDC(ClipboardWindow, hdc, FALSE);

	DIB_FreeConvertedBitmapInfo(pConvertedBmi, pBmi);

    return hbitmap;
}