thank you for reaching out to us. And the answer to your question is: Yes, this is possible with a
BitmapButtonCustomGui . However, this feature is only available with S22 onwards (please remember to add version tags to your posting in the future). The relevant flags are documented here for C++ and here for Python (I am aware that you are on C++, but the Python docs are a bit nicer in this case). The settings flag you can use for this with S22+ is
BITMAPBUTTON_DISABLE_FADING. I have added the little Python script with which I did test the flag at the end. When you need a specific C++ version or any further help, please do not hesitate to ask.
"""Dialog demonstrating a CUSTOMGUI_BITMAPBUTTON with a static background
ID_BITMAP_BUTTON = 10000 # The gadget ID for the button.
"""Creates the layout for the dialog.
# The settings for the CUSTOMGUI_BITMAPBUTTON
bc = c4d.BaseContainer()
# Its a bitmap button.
bc[c4d.BITMAPBUTTON_BUTTON] = True
# The first icon (and only icon for a non-toggle button).
bc[c4d.BITMAPBUTTON_ICONID1] = c4d.OBJECT_FIGURE
# The default background color.
bc[c4d.BITMAPBUTTON_BACKCOLOR] = c4d.COLOR_BG
# Disable the mouse over fading. This feature is only available in
# S22 onwards (which the C++ docs do not currently point out
bc[c4d.BITMAPBUTTON_DISABLE_FADING] = False
# Add the gadget.
self.bitmapButton = self.AddCustomGui(PC13071Dialog.ID_BITMAP_BUTTON,
c4d.BFH_CENTER | c4d.BFV_CENTER,
0, 0, bc)
# Little nasty hack to expose the dialog object to the module and make
# async dialogs work (which is required for the bitmap button). Please
# do not do this an production environment. This is only for the purpose
# of quickly demonstrating the CUSTOMGUI_BITMAPBUTTON.
# Open our dialog.
dialog = PC13071Dialog()
dialog.Open(dlgtype=c4d.DLG_TYPE_ASYNC, defaultw=-2, defaulth=-2)
if __name__ == '__main__':