Message: Bitmap is being used within a document
Cause
You have attempted to delete a bitmap from the Bitmap Gallery. This bitmap is used in a loaded document.
What Can I Do?
 Choose 
 Delete to delete the bitmap from 
 the gallery. The bitmap is replaced in the document by the default bitmap.
 Choose 
 Delete to delete the bitmap from 
 the gallery. The bitmap is replaced in the document by the default bitmap.
 Choose Cancel 
 to keep the bitmap in the gallery.
 Choose Cancel 
 to keep the bitmap in the gallery.