dll problem

Question

4.33/5 (2 votes)

See more:

Hello,

I have an application which works fine .

I have now made DLL of the classes which I use.In one of the classes
it has a statement which calls the ParentFrame and sets the menu.
GetParentFrame()->SetMenu(&FrameMenu);

But when I use DLL in my application I get an unhandled error where it seems that the Parent Frame is not found

What must be the problem?

When I debug he application with DLL the debug cursor does not enter inside the DLL's .cpp file .I want to enter the DLL code .What should be
done for that?

Pritha

Posted 28-Jul-08 17:27pm

prithaa

Add a Solution

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

sashoalm · Answer 1 · 2008-07-28T20:54:00

MFC has issues with multiple threads and possibly also with dlls. In this case GetParentFrame() is the culprit as it makes an internal call to CWnd::FromHandle which looks like this:

CWnd* PASCAL CWnd::FromHandle(HWND hWnd)<br />{<br />	CHandleMap* pMap = afxMapHWND(TRUE); //create map if not exist<br />	ASSERT(pMap != NULL);<br />	CWnd* pWnd = (CWnd*)pMap->FromHandle(hWnd);<br /><br />#ifndef _AFX_NO_OCC_SUPPORT<br />	pWnd->AttachControlSite(pMap);<br />#endif<br /><br />	ASSERT(pWnd == NULL || pWnd->m_hWnd == hWnd);<br />	return pWnd;<br />}<br />

The afxMapHWND func is probably trying to use global structures that aren't visible from the dll.