Re: HICON from HWND?

Norbert Unterberg <nunterberg@newsgroups.nospam>
Fri, 25 Jan 2008 08:06:00 +0100
Vincent Fatica schrieb:

On 24 Jan 2008 07:16:03 -0800, "Scott Seligman" <> wrote:

hIcon = SendMessage(hWnd, WM_GETICON, ...);

Yes (thanks) I realized that shortly after posting. But many apps don't respond
well (notepad, or devenv, for example). I wound up digging and using

Before you go the ExtractIcon route, you might try calling
GetClassLong(hWnd, GCL_HICON) to get the icon for applications that
use a different icon than the first icon in their module.

Thanks, Scott. That works in the two troublesome cases I mentioned (notepad and
devenv). Do you have any idea how reliable it is? Would you get a
system-assigned icon it the WNDCLASS didn't define one?

I'd say no method is 100% reliable since there is no guarantee that an
applicaton as an icon at all. As far as I remember from my old Windows 2 Petzold
days, an application can chose to get WM_PAINT messages to draw the icon, and
then it can draw anything it wants (though my memory could be wrong...)


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