Static Link fails with VS2008 MFC Feature Pack

EDN Admin · Apr 24, 2008

We have a very large application thats been working fine and I just tried to upconvert to the new CMFCxxxx classes. It seemed to work flawlessly until I tried linking in release mode and that fails miserably.

The link works but the code crashes.

As a simple test I tried using the scribble walkthrough in MSDN. After making the changes it ran fine in debug and release but sure enough when I swtiched to static link MFC it crashes in very much the same fashion.

Heres what crashes at a user level:
 

<div class=codeseg>
<div class=codecontent>
<div class=codesniptitle>
CMainFrame* pMainFrame = new CMainFrame;
if (!pMainFrame->LoadFrame(IDR_MAINFRAME))
{
delete pMainFrame;
return FALSE;
} 

 


Here the LoadFrame crashes hard. If you trace through the code for a while... you get to

in afxmdiclientareawnd.cpp line 618
 

<div class=codeseg>
<div class=codecontent>
<div class=codesniptitle>
CWnd::CalcWindowRect(lpClientRect, nAdjustType);
int nActiveTab = m_wndTab.GetActiveTab();
for (int i = 0; i < m_wndTab.GetTabsNum(); i++)
{
CWnd* pWnd = m_wndTab.GetTabWnd(i);
if (pWnd->GetSafeHwnd() == 0)
{
continue;
} 




Single stepping through this carefully you find that GetActiveTab is calling a garbage function as is GetTabsNum. The virtual table is pointing who-knows-where and calling random code that may or may not totally crash. In our app the second call is going to a string value instead of code.

Does anyone know how to get a static link working with the new MFC stuff? Unless Im missing something it is just totally broken. I really hope Im missing something.

Thanks,
 Mark


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Static Link fails with VS2008 MFC Feature Pack

EDN Admin

Well-known member