VB6 PictureBox SavePicture - save picture as png?

Question

With VB6 PictureBox, how do I save to the png format?

Answer 1

You can't. The VB6 PictureBox only supports Bitmap, icon, metafile, GIF, and JPEG image types. You'll need to use something else if you wish to work with PNG files. Perhaps the Windows Image Acquisition Automation Library would be of use to you.

Answer 2

Check out the cPNGWriter.cls file in LaVolpe's 32bpp Suite:

http://www.planetsourcecode.com/vb/scripts/ShowCode.asp?txtCodeId=67466&lngWId=1

As stated in the class comments, it does require zlib.