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From: davido@asylum.SF.CA.US (David Ornstein)
Newsgroups: comp.os.os2.misc,comp.os.os2.programmer
Subject: Help with setting the oicon for minimized window
Keywords: Icons PM
Message-ID: <13005@asylum.SF.CA.US>
Date: 7 Nov 90 00:24:07 GMT
Organization: The Asylum, Belmont, CA
Lines: 45

I have a program which runs in the MDI style (IOW, it has a bunch of 
child windows in the main window which it uses to display "documents."

These documents are actually graphical, and I want the iconized version of
the child windows to look like a tiny bitmap that I can create for it so
it looks like a shrunken of the current graphic.  I spent about
5 hours today thrashing with PM and here's what I tried that didn't work.
Help is greatly appreciated!!!

Basically, I created a bitmap that I know represents a good bitmap for
the icon.  I've tried several bitmap sizes including 16x16 and 32x32.  I
can get the bitmap to display OK on the screen without any trouble.  The 
problem comes when I try to create an icon from the bitmap.  I use the
WinCreatePointer() function which should take a bitmap handle and create
a pointer.  I set the parms so that it would create an icon-sized pointer
(actually, I tried the flag both ways).  I passed in the bitmap handle
and got back an icon handle.

The system clearly created an icon for me, because I can both see the icon
if I display it with WinDrawPointer() and I appear to be succesfully
associating the icon with the frame window for my child document window
(when I minimize it, I get the same icon that I got with WinDrawPointer).

The problem is that the bitmap is a mess.  It has no recognizable structure.
I've tried color and b&w bitmaps.  Parts of the resulting icon appear to be 
transparent.

The documentation does say something cryptic in the WinCreatePointer()
call, that the bitmap supplied needs to "be logically divided into two
sections vertically, each half representing one of the two images used
as successive drawing masks for the pointer."  Now I tried all sorts of
things to guess at what they meant by this, including build a bunch of 0xFFs
at the end of the bitmap, duplicating the buffer's first half in the second
half, etc.  All yielded dead ends.

All of this leads me to assume that my use of WinCreatePointer() requires
something that I don't know.  HAS ANYBODY EVER USED THIS FUNCTION WITH ANY
SUCCESS?????????????

Help!!!

David Ornstein
Sage Software, Santa Clara, CA
408-988-7575
davido@ccgate.sage.com