| object graphics tvrd problem.... [message #64432] |
Mon, 29 December 2008 11:18 |
ghgm2008
Messages: 17
Registered: December 2008
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Junior Member |
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Hi there,
I have an object graphics program and I want this to write a .png file
every minute - via a screengrab.
Under OSX this works fine - no problem... but on my main work machine
(LINUX) it grabs the screen too literally
- I get any windows in front - the screensaver - all sorts of stuff.
How do I make sure that the screengrab just grabs the correct window ?
Here is my code:
First the Draw window:
drawID = Widget_Draw(horizontal_base, XSize=750, YSize=750,
Graphics_Level=2, Retain=0, $
Expose_Events=1, Event_Pro='stp_Draw_Events', Button_Events=1)
Then I get the value ....
Widget_Control, drawID, Get_Value=Main_Window
And here is the screengrab bit:
info.Main_Window->GetProperty, Image_Data=snapshot
filename = 'testfile.png'
write_png,filename,snapshot
Like I say - under OSX this works fine - but on my LINUX box I am
alway reading the wrong things
(screensaver etc.)
I've tried messing with the Retain=0 bit - but no success.
Do I have to do this as a Z-buffer thingy ?
Thanks for any help.....
George.
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