perl-win32-gui-users

[perl-win32-gui-users] Graphics

[Jonathan S. <jso...@al...>]

I have a window that I draw graphs on but every time a window goes above 
this window, or if I minimize it then restore it, the graphics are gone.

Is it possible to keep the graphics on it?

Jonathan

Jonathan Southwick
jso...@al...
Technical & Network Services
Allegheny College, Meadville, PA 16335
(814) 332-2755

Re: [perl-win32-gui-users] Graphics

[Johan L. <jo...@ba...>]

At 15:16 2002-10-04 -0400, Jonathan Southwick wrote:
>I have a window that I draw graphs on but every time a window goes above 
>this window, or if I minimize it then restore it, the graphics are gone.
>
>Is it possible to keep the graphics on it?

You need to redraw your graphs every time Windows thinks it's nessecary to 
do so. It will tell the control that using the WM_PAINT message. In 
Win32::GUI that corresponds to the _Paint event handler.

So if your Graphics control is called grGraph make sure you draw everything 
in the sub ::grGraph_Paint.

This may be too slow, but there may be solutions to that.


/J

-------- ------ ---- --- -- --  --  -    -     -      -         -
Johan Lindström    Sourcerer @ Boss Casinos     jo...@ba...

Latest bookmark: "Conference Presentation Judo"
http://perl.plover.com/yak/judo/presentation/
dmoz (1 of 10): ...cial_Intelligence/Natural_Language/Conferences/ 6