🚀 go-pugleaf

In article <1992Dec16.152731.45692@kuhub.cc.ukans.edu> 2ftptimely@kuhub.cc.ukans.edu writes:

>I am having a hell of a time with
>the Windows API call
>SelectClipRgn(...)
>
>I select a region and clipping works fine but 
>when I try to unselect the region wDeleteObject(ClipRgn)
>Then everything else that I paint to
>that DC is still "clipped". What I want
>is to restore the DC to how it was before I
>gave it a new clipping region. This is the
>DC given to me in the PAINT routine of 
>Borland OWL in the TWindow class. Any
>thoughts?
>
>Thanks,
>George Frazier frazier@hawk.cs.ukans.edu
>
>

Are you selecting the old clip region before deleting the one you created?
Remember, Windows won't let you delete an object that's currently selected
in a DC.  What you should be doing is:

    ClipRegion = CreateRegion( ..... );
    OldRegion = SelectObject( hDC, ClipRegion );
    .....
    SelectObject( hDC, OldRegion );
    DeleteObject( ClipRegion );

That should work OK.

Chris
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| Chris Marriott                           | chris@chrism.demon.co.uk    |
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