RE: [GD-Windows] CreateDialog failure

[Brian S. <bs...@mi...>]

I mostly use MFC for these sorts of things but here are some ideas to =
try:

* are you sure hInstance is the instance handle to your dll and not the =
app?  otherwise LoadResource on the dialog resource will fail

* is hWnd a fully created window, or is it one you're in the process of =
creating?  have you tried passing NULL for the parent?

* Is NULL a valid value for the DialogProc?  Should it be DefDlgProc?

* If you replace your call with MessageBox(...) does everything work?

Unfortunately I do not know the answer to your real problem, but here's =
a timesaving tip: typing "err,hr" into a watch window in the debugger =
saves you the hassle of calling GLE/FormatMessage/etc.

--brian


-----Original Message-----
From:	Pierre Terdiman [mailto:p.t...@wa...]
Sent:	Sat 8/24/2002 7:18 AM
To:	gam...@li...
Cc:=09
Subject:	[GD-Windows] CreateDialog failure
Hi,

I create a dialog using something like :

handle =3D CreateDialog(
      hInstance,
      MAKEINTRESOURCE(IDD_DIALOG1),
      hWnd,
      NULL);

But returned handle is null, which means (I guess) something went wrong.

So I tried :

  DWORD Er =3D GetLastError();

Then retrieving the error string using FormatMessage (using the code =
snippet from the MSDN). But it doesn't help since error code is 0 and =
the translated string says there was no error.

Hmm. What do I do now ?
What are the usual reasons for CreateDialog to fail ?

In case it's important, the call takes place in a DLL dynamically loaded =
by a 3DS MAX plug-in, and hInstance and hWnd used to create the dialog =
are the ones from the MAX plug.

Pierre