Using resources in .dlls is always hard (having nothing to do with MapInfo),
because the default resource handle points to the calling process, which in
this case is the MapInfo .exe. In short, you need to make sure that you are
loading the resource from the correct module. If you are actually using
'C', then you are probably loading the resources explicitly, so make sure in
your call to 'CreateDialog' that the 1st parameter (HINSTANCE) points to the
.dll itself. You can save that parameter by making sure to handle DllMain.
If you are using MFC or some other library, it will be a little different.
In MFC you would need some code like:
AFX_MANAGE_STATE(AfxGetAppModuleState());
And depending on your situation, you may need to call
"AfxSetResourceHandle(...)"
I hope this helps a little...
Ned Harding
Chief Technology Officer
SRC - Extending the Reach of Micromarketing
3825 Iris Ave Suite 150
Boulder, CO 80303
(303) 440-8896 x104
http://www.extendthereach.com
Technology in Action:
http://www.DemographicsNow.com
-----Original Message-----
From: Colin Henderson [mailto:[EMAIL PROTECTED]]
Sent: Monday, January 27, 2003 9:27 AM
To: MI-L List (E-mail)
Subject: MI-L MI-L: Dialogs in a C DLL called from MI
List,
Please help! I am trying to get a dialog to appear in MapInfo from a dll
created in C. When i call the function in my dll that will show the dialog
I get the return value of -1. I am getting the c dialog to report the error
and it returns:
"The specified resource type cannot be found in the image file."
Has anyone come across this before? I know the dialog I am calling is
present in the dll because I can see it when I run ResHack to view the dll.
I have included the .rc file and all relevant headers, but still no joy!
If I apply the same principle in a standard executable all works fine. Is
it not possible to store dialogs in a dll and then call them from mi?
All help, greatly appreciated!
--------------------------------
Colin Henderson
Senior Developer
Ordnance Survey
Tel: (0)2380 79 2034
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