Extended TfpgButton to paint disabled images when needed.
Extended TfpgButton to paint disabled images when needed.

Again, this uses the new grayscale filter to paint a disabled image
when Enabled = False.

wkitty42/fpGUI,wkitty42/fpGUI,wkitty42/fpGUI,wkitty42/fpGUI,wkitty42/fpGUI,wkitty42/fpGUI