OpenEuphoria

Re: repainting all windows in rectangle

• Posted by Brian Broker <bkb at CNW.COM> Nov 07, 2000
• 558 views

On Sun, 5 Nov 2000 13:21:12 +0100, <tone.skoda at SIOL.NET> wrote:

>Can anybody write a procedure which will repaint all windows which lie
>under/in given rectangle?
>Like when you minimize a window and all windows under it are repainted.
>
>
>--arg. rect has screen coordinates {left, top, right, bottom}
>procedure RepaintWindowsInRect(sequence rect)
>
>-- ... here's job for you
>
>end procedure

If you are using Win32Lib, why not just create a Pixmap buffer for your
windows?  Then you just do something like this for each window:

constant
  SomeWin = create( Window, ... )
  Buffer  = create( Pixmap, ... )

-- when you want to update your window, you make corresponding changes to
--   your Pixmap 'Buffer'

---------------------------------------------
-- then you can repaint your window by copying Buffer to Window
procedure onPaint_SomeWin( integer x1, integer y1, integer x2, integer y2 )
  copyBlt( SomeWin, 0, 0, Buffer )
end procedure
onPaint[SomeWin] = routine_id( "onPaint_SomeWin" )

-- I hope this helps (and I hope I didn't miss your point)
-- See my RGBview demo in Wolf's tutorial for a simple example
-- Brian