Brew MP 1.0.2
This routine is used to set or replace an image as a background. If the
widget has a background image and the passed in value for the image is
null, the existing background image is removed from the widget.
int IWidget_SetBGImage(IWidget *pif, IImage *pii);
AEE_SUCCESS - If the widget is able to set the image as a background.
AEE_EFAILED - If the widget failed to set the image as a background.