MSG_UPDATE is sent after pressing button in Material Data
peterakos last edited by peterakos
When I press a button in MaterialData, the message MSG_DESCRIPTION_COMMAND is sent.
After that I always receive a MSG_UPDATE as well.
Is there anything I should do to avoid that ?
After handling the button callback, I return TRUE.
Hi @peterakos, MSG_DESCRIPTION_COMMAND is used to trigger the action of pressing the button.
But in most of the case, if there is a button, it's to do something, so actually modify something which will then probably trigger a MSG_UPDATE.
Moreover you can test it with a Python Generator and UserData button attached. If you click on the button only MSG_DESCRIPTION_COMMAND is triggered.
import c4d def message(id, data): if id == c4d.MSG_DESCRIPTION_COMMAND: print "Button Clicked" elif id == c4d.MSG_UPDATE: print "MSG_UPDATE" return True def main(): return c4d.BaseObject(c4d.Ocube)
May I ask you what are you trying to achieve?
peterakos last edited by
Thank you very much for your clarification on this.
I have a button in MaterialData that saves the material in a specific format in the disk.
I doesn't change anything in the material but the MSG_UPDATE is sent anyway.
So, since I don't want to run the MSG_UPDATE handler, I have to set a flag to true in order to skip it.