List of Bitmap Close Types
One of the following values:
BMM_CLOSE_COMPLETE
Close and save the image.
BMM_CLOSE_ABANDON
Close but abandon the image.
Many bitmap loader / savers do not make use of these flags. An example of one that does is the FLC saver. When a FLC file is closed, it goes through each image and calculates the palette. This can take a long time. If the user cancels the operation they will not want to wait for this to happen. Thus this flag is passed to indicate that the user has canceled and this processing should not occur.