DoModal throws error 1812 ERROR_RESOURCE_DATA_NOT_FOUND

[Sug]

Hello,

I have written an app and derived a calls from CDialog. This class is
associated with a dialog from the RC file.
I compile all my resources into a resource DLL. And my code loads the
resource DLL.

When I call DoModal on my dialog, sometimes it succeeds and sometimes
DoModal() returns -1 and GetLastError() gives me error 1812
(ERROR_RESOURCE_DATA_NOT_FOUND)

As I said, sometimes I am able to successfully do a DoModal and it fails
sometimes. I opened my resource DLL and varified that it does contain the
dialog I want to load.

Can anyone point me to possible cause of this? I am using VC 7.1 on Windows
XP.

Thanks much

Sug

[Ajay Kalra]

Post by Sug
I have written an app and derived a calls from CDialog. This class is
associated with a dialog from the RC file.
I compile all my resources into a resource DLL. And my code loads the
resource DLL.

Did you add this DLL to resource chain so that these resources can be
found when you are loading a resource from this DLL. (See
CDynLinkLibrary).

----
Ajay Kalra
***@yahoo.com

[VSP]

Loading the resource dll is not sufficient.
You have to call AfxSetResourceHandle(handle to the resource dll)

HANDLE hPrevRes = AfxGetResourceHandle()
AfxSetResourceHandle(hRes);
...
Use the resource(Create dialog, load strings...)

AfxSetResourceHandle(hPrevRes);

-VSP

Post by Sug
Hello,
I have written an app and derived a calls from CDialog. This class is
associated with a dialog from the RC file.
I compile all my resources into a resource DLL. And my code loads the
resource DLL.
When I call DoModal on my dialog, sometimes it succeeds and sometimes
DoModal() returns -1 and GetLastError() gives me error 1812
(ERROR_RESOURCE_DATA_NOT_FOUND)
As I said, sometimes I am able to successfully do a DoModal and it fails
sometimes. I opened my resource DLL and varified that it does contain the
dialog I want to load.
Can anyone point me to possible cause of this? I am using VC 7.1 on Windows
XP.
Thanks much
Sug

[Sug]

Post by VSP
Loading the resource dll is not sufficient.
You have to call AfxSetResourceHandle(handle to the resource dll)
HANDLE hPrevRes = AfxGetResourceHandle()
AfxSetResourceHandle(hRes);
...
Use the resource(Create dialog, load strings...)
AfxSetResourceHandle(hPrevRes);
-VSP

Hi VSP,

Thanks for your responce. Yes I found out that this is what was required.
That solves the problem.

Sug

[Ajay Kalra]

And if you add the dll to resource chain, you dont have to do anything
like this.

---
Ajay