Re: Register an App with windows

From:
"GT" <a@b.c>
Newsgroups:
microsoft.public.vc.mfc
Date:
Thu, 16 Sep 2010 11:56:56 +0100
Message-ID:
<4c91f7f8$0$11206$c3e8da3@news.astraweb.com>
"David Lowndes" <DavidL@example.invalid> wrote in message
news:jur396pelp9tabis5a2tde6csu5c4ac8in@4ax.com...

I have never used Spy++ before - I'm just trying it out now. Not sure how
to
use it...


Persist with it - it's invaluable!

That was my actual code!!


Not quite, FindWindow has 2 parameters! :)

The
searching code in question is:

 while (FindWindow(_T("CircaApp"), NULL) == 0)
  Sleep(100);


That's more like it.

Have you managed to check what your top level window class name is
using Spy++?


Not sure! I have found my window, but it seems to report a class name of
"Afx:00400000:8:00010011:00000000:00700647", instead of "CircaApp", which
implies that my AfxRegisterClass(&wndcls) call isn't doing what I want it
to. The code I'm using was lifted from an online demo somewhere. It looks
like this:

 // Register the class, so that FindWindow can find us.
 WNDCLASS wndcls;
 memset(&wndcls, 0, sizeof(WNDCLASS)); // start with NULL defaults
 wndcls.style = CS_DBLCLKS | CS_HREDRAW | CS_VREDRAW;
 wndcls.lpfnWndProc = ::DefWindowProc;
 wndcls.hInstance = AfxGetInstanceHandle();
 wndcls.hIcon = LoadIcon(IDR_MAINFRAME); // or load a different icon
 wndcls.hCursor = LoadCursor( IDC_ARROW );
 wndcls.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
 wndcls.lpszMenuName = NULL;
 // Specify your own class name for using FindWindow later
 wndcls.lpszClassName = _T("CircaApp");
 // Register the new class and exit if it fails

 if(!AfxRegisterClass(&wndcls))
 {
  TRACE("Circa Class Registration Failed\n");
  return false;
 }

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