Actually, there are some bitmaps in some archives. Using VBA, I use 7zip to extract the bitmaps and set them to a Picture box one after the other on a userform.
Well, I think using an external program (7zip) to extract the bitmaps must have been the cause of the little slow down.
However, I'm think that using a DLL to extract the bitmaps and possibly using binary mode can make it faster. Unfortunately, I don't have the idea.
Do you have any idea on how to go about this?