How can I draw directly with Lice without using IPlug

[SaschArt]

How can I draw directly on a windows create (API MS) with Lice without using IPlug. I tested this code in the window messages:

   
case WM_PAINT: {
			
      PAINTSTRUCT	paintStruct;			// painting structure
      HDC hDC = BeginPaint(hWnd, &paintStruct);
      // get the window dimensions
      RECT		clientRect;			// client window dimensions
      GetClientRect(hWnd, &clientRect);

      LICE_pixel lc=LICE_RGBA(255,0,255,255);
      LICE_SysBitmap* mDrawBitmap = new LICE_SysBitmap(clientRect.right-clientRect.left, clientRect.bottom-clientRect.top);

      static LICE_IBitmap* srcbmp=LICE_LoadPNGFromResource(hInstance, ID_KNOB);
      debugPrint("LoadPNG",srcbmp->getWidth(), srcbmp->getHeight());
      LICE_FillRect(mDrawBitmap, 10, 10, 100, 100, lc, 1.0f, 0);
      LICE_Blit(mDrawBitmap, srcbmp, 40, 40, 0, 0, 40, 40, 1.0f, 0);
      
      EndPaint(hWnd, &paintStruct);
      
      return 0;
		}

Nothing draw. LoadPNGFromResource Load the image correctly, with the right dimensions. What is missing from the code?