[comp.windows.news] Do transparent canvases receive damage events?

pablo@ppgbms (Pablo Gonzalez) (11/15/89)

Is it correct to say that if a canvas is transparent, it will never receive
damage events? 
We are currently running NeWS 1.1. In the code that I have written, it appears
that if the canvas is transparent NeWS will not generate damage events for it. 
Is this true in X11/NeWS? or is it a bug in NeWS 1.1 that X11/NeWS has fixed?

I am posing this question because I do not recall reading anything 
in the NeWS 1.1 reference manual that explicitly states that transparent 
canvases do not receive damage events. 


	Thanks,
	Pablo Gonzalez
	One Campus Drive
	Pleasantville, N.Y.  10570

	(914) 741-4626

	path ppgbms!moe!pablo@philabs.phillips.com

"bryan_kramer.TORHO"@XEROX.COM (11/23/89)

I too had a lot of trouble with damage events... I don't know about transparency,
but I did discover that when using lite, only one canvas got the event.  In particular,
for a lite window, the frame canvas always got the damage events, not the client canvas.
I tore my hair out for days before discovering this.

Bryan M. Kramer
Xerox Canada Inc.