Hi Yves:
Thank you very much for the helpful explanation.
Looks like that Jim had the reason to use LTG in medium size while 'Opening' image in small size. Most likely, he did some experiments, with the result, probably: TEXT (in Opening.bmp) is better stretched (from small to medium and large) than shrunk (from medium to small.) On the other hand, PICTURE of object (in LTG) is best in medium size. For that reason he made the source rectangle in small size (not in medium size.) Just guessing.
Regards,
Suyono
PS: Looks like that your bitmaps are 8-bit, not 256-bit.
Bigane wrote:
Hi Suyono, There is no trick to make good the Opening image in the Medium resolution.Jim used a Windows API to do the resolution. He loads the Opening.bmp in the low resolution, then he used this function to stretch the picture in the medium or the big size :