Am I BitBlt'ing Bitmap correctly? wrong code?

Im trying to replace my gdi+ DrawImage() code to BitBlt'ing code to speed things up but my image won't paint to the screen?

Is this the correct code? thanks.

hdc = BeginPaint (hWnd, &ps);
HDC hdcMem = CreateCompatibleDC(hdc);
SelectObject(hdcMem, myBitmap);
BitBlt(hdc, 0, 0, myBitmap->GetWidth(), myBitmap->GetHeight(), hdcMem, 0, 0, SRCCOPY);
DeleteDC(hdcMem);


When I was using DrawImage() everything was fine. but too slow.
Im really am sure this is not the right code.

Where is "MyBitmap" defined/initialized?

Did the OP call EndPaint()?

In SelectObject, you have to pass a HBITMAP handle and not a pointer to Gdiplus::Bitmap object.

Code:

---

  //...
  HDC hdcMem = ::CreateCompatibleDC(hdc);
  HBITMAP hBitmap = NULL;
  Color color;
  myBitmap->GetHBITMAP(color, &hBitmap);
  HBITMAP hBitmapOld = (HBITMAP)::SelectObject(hdcMem, hBitmap);
  ::BitBlt(hdc, 0, 0, myBitmap->GetWidth(), myBitmap->GetHeight(), hdcMem, 0, 0, SRCCOPY);
  ::SelectObject(hdcMem, hBitmapOld);
  ::DeleteDC(hdcMem);
  // ...

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