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From: jaz@icd.ab.com (Jack A. Zucker)
Newsgroups: comp.windows.ms.programmer
Subject: Re: Bitmaps
Message-ID: <1991Jun26.125030.13732@icd.ab.com>
Date: 26 Jun 91 12:50:30 GMT
Article-I.D.: icd.1991Jun26.125030.13732
References: <1991Jun25.182619.150@icd.ab.com>
Sender: usenet@icd.ab.com (Usenet News Administrator)
Reply-To: jaz@icd.ab.com (Jack A. Zucker)
Organization: Allen-Bradley Company; Industrial Computer & Communications Group
Lines: 31
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In article <1991Jun25.182619.150@icd.ab.com>, jaz@icd.ab.com (Jack A.
Zucker) writes:
|> I am using LoadBitmap(hInstance,"bitmapname"); to load bitmap resources.
|> I am trying to do this in the WM_CREATE: case of a child window. I get
|> a NULL back from the function. When I move the LoadBitmap up to the
|> parent's WM_CREATE: it works fine. I've tried setting the segment
|> attributes to preload nondiscardable but to no avail.
|> 


I since changed my program to load the bitmaps from a DLL. It still has
the same symptoms. To load the DLL I use:

hLibrary = LoadLibrary("d:\\windev\\jaz\\palette\\bitmap.dll");

To load the bitmap I say:

hBitmap = LoadBitmap(hLibrary,"Pencil"); /* where pencil is the resource */

Once again, The LoadLibrary() and LoadBitmap() only work when done in
the parent window. When called from the child's WM_CREATE: they return
NULL. 

Unfortunately this is not mentioned in any of the SDK documentation, nor
is it mentioned in Petzold's book. Am I doing something dumb or is this
just a poorly documented feature ?

| Jack A Zucker         {cwjcc,pyramid,decvax,uunet}!jaz@icd.ab.com |
| Allen-Bradley Company, Inc. or                     ICCGCC::ZUCKER |
| 747 Alpha Drive                                                   |
| Highland Hts., OH 44143 Phone(216) 646-4668   FAX: (216) 646-4484 |