GDI+: GdipDrawCachedBitmap

[José Roca]

The following example calls GdipDrawCachedBitmap to draw the image stored in a CachedBitmap.

C++

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VOID Example_CachedBitmap(HDC hdc)
{
   Graphics graphics(hdc);
   Bitmap bitmap(L"Grapes.jpg");
   CachedBitmap cachedBitmap(&bitmap, &graphics);

   graphics.DrawCachedBitmap(&cachedBitmap, 10, 10); 
}


PowerBASIC

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SUB GDIP_DrawCachedBitmap (BYVAL hdc AS DWORD)

   LOCAL hStatus AS LONG
   LOCAL pGraphics AS DWORD
   LOCAL pBitmap AS DWORD
   LOCAL pCachedBitmap AS DWORD
   LOCAL strFileName AS STRING

   hStatus = GdipCreateFromHDC(hdc, pGraphics)

   '  // Create a Bitmap from a JPEG file.
   strFileName = UCODE$("climber.jpg")
   hStatus = GdipCreateBitmapFromFile(STRPTR(strFileName), pBitmap)

   ' // Use the Bitmap to create a CachedBitmap.
   hStatus = GdipCreateCachedBitmap(pBitmap, pGraphics, pCachedBitmap)

   ' // Draw the cached bitmap.
   hStatus = GdipDrawCachedBitmap(pGraphics, pCachedBitmap, 20, 10)

   ' // Cleanup
   IF pCachedBitmap THEN GdipDeleteCachedBitmap(pCachedBitmap)
   IF pBitmap THEN GdipDisposeImage(pBitmap)
   IF pGraphics THEN GdipDeleteGraphics(pGraphics)

END SUB