BCGControlBar Pro for MFC
void CBCGPDialog::SetBackgroundImage ( HBITMAP  hBitmap,
BackgroundLocation  location = BACKGR_TILE,
BOOL  bAutoDestroy = TRUE,
BOOL  bRepaint = TRUE 

Sets the dialog box's background image

Use this function to set the image as background. The image is not stretched to fit the dialog box client area. Use the BackgroundLocation values to specify the image location.

hBitmapThe image handle
locationThe image location
bAutoDestroySpecifies whether the image should be destroyed automatically
bRepaintSpecifies whether the dialog box's client area should be updated immediately