To draw an image.
Caret (^) - the call-back is called when the user clicks on the image.
Question mark (?) - a help string is supplied.
image_name is standard character string (can be replaced by the @ symbol)
giving the name appearing in a resource script.
%im is like %bm - Bitmap but can be used with PNG, JPEG, BMP, and PCX resources and files.
The resource file contains one of the following three lines:
myimage IMAGE imagefile.png
myimage IMAGE imagefile.jpg
myimage IMAGE imagefile.bmp
myimage IMAGE imagefile.pcx
Alternatively, using an external file enclosed in curly brackets:
%ic - Icon,%gi - GIF,%bm - Bitmap