OpenEuphoria

Re: GDI ???

• Posted by "Thomas Parslow (PatRat)" <patrat at rat-software.com> Apr 10, 2001
• 449 views

> Hi,
> 
> i'm writing a graphical alarm presentation program (fire )
> 
> i have to create about 1000 transparent ( i use 4200 as parameter) PushButtons
> for the detectors .
> then I transblt a Dib above it, this way i get a clickable transparent image
> (since icons don't work ok on a bitmap background)
> 
> 
> I have a problem :
> 
> I can't create 1000 buttons at once , 
> 
> Win32lib gives me an error (unable to SaveDC...)
> 
> GDI resource = 0%   ?????
> 
> How can i avoid this , i need all of the buttons to work  to detect what Dib
> was clicked.
> 
> Can i Free GDI resources, without destroying the PushButton ???
> 
> I tried getDC and ReleaseDC, but still it doesn't work) (Handle error)
> 
> Win2000/NT doesn't have a problem with this only Win95,98,Me
> 
> 
> Renzo Beggia
> Email : renzo.beggia at vsk.be

I think I see what the problem is now, before I assumed you where
using getDC then not using matching releaseDC's.

Your creating invisible buttons to catch clicks, right? Probably what
you need to do is catch mouse events yourself: You should use the
onMouse and onClick events of the window it's self, then check the
mouse position against the position of every icon, find out which one
it's within, then perform the appropriate action.

Does that make any sense?

Thomas Parslow (PatRat) ICQ #:26359483
Rat Software
http://www.rat-software.com/
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