>>AH, I am sorry, now only I realize UT's [View] button (View all messages of this thread) won't show attachedment of a message at all. I must click and bring up your previous message alone in order to see your attached GIF...
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>>Btw, I try your GIF with the codes that I have presented earlier, it works exactly like mine... I mean it also screw up if the background is transparent. (Note that for all my attached snapshot, the sandpaper pattern is my VFP application desktop background (it is not plain white)
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>>Please see attached snapshots of this message.
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>It works on plain background of any color not an image background.

If you see the second snapshot of my previous message, your GIF 's transparent background work correctly (I mean it is as transparent as it suppose to be) on the image background (in this case the sandpaper).

The problem is when the background is transparent, the flipping of the "Come In" goes wrongly... In fact when you suggest to set backstype=1, you are suggesting me to disable the background transparency (though it does make the animation - flipping of the "Come IN" displayed correctly),