CString problems with /clr

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   Hello,
I have decided to start using certain .Net Framework classes in my C++ MFC applications, so this requires complilation of the app using the /clr option.  The stdafx.h file #includes the XTreme Toolkit Pro libraries.
The application uses the Codejock commandbars and when the app is run it returns a .Net "System.NullReferenceException" exception when CXTPCommandBars->SetMenu() is called in CMainFrame::OnCreate().  Here is the code in question:

int CMainFrame::OnCreate(LPCREATESTRUCT lpCreateStruct)

{

[...]

CXTPCommandBars* pCommandBars = GetCommandBars() ;
CXTPCommandBar* pMenuBar = pCommandBars->SetMenu ( _T("Menu Bar"), IDR_MAINFRAME ) ;
[...]

}

Stepping into the code using the debugger shows that, inside CXTPCommandBars::GetMenu(), the value of the parameter CString strName seems to be garbage characters rather than the supplied value (ie. _T("Menu Bar") ) .  This garbage CString is then passed to CXTPMenuBar::SetTitle() which errors out further up the call stack in the ATL/MFC class CSimpleStringT class.  I'm guessing the error is caused by the garbage CString passed into GetMenu().
When the app is not compiled with /clr, the code works as expected.  Also note that the XTreme Toolkit Pro dlls are NOT compiled using /clr in either case.
Has anyone run into this problem before?  And/or can someone help with this?  Thanks.

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zoobiedoo Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 17 March 2005 Status: Offline Points: 1	Post Options Post Reply Quote zoobiedoo Report Post Thanks(0) Quote Reply Topic: CString problems with /clr Posted: 17 March 2005 at 11:40am
	Hello, I have decided to start using certain .Net Framework classes in my C++ MFC applications, so this requires complilation of the app using the /clr option. The stdafx.h file #includes the XTreme Toolkit Pro libraries. The application uses the Codejock commandbars and when the app is run it returns a .Net "System.NullReferenceException" exception when CXTPCommandBars->SetMenu() is called in CMainFrame::OnCreate(). Here is the code in question: int CMainFrame::OnCreate(LPCREATESTRUCT lpCreateStruct) { [...] CXTPCommandBars* pCommandBars = GetCommandBars() ; CXTPCommandBar* pMenuBar = pCommandBars->SetMenu ( _T("Menu Bar"), IDR_MAINFRAME ) ; [...] } Stepping into the code using the debugger shows that, inside CXTPCommandBars::GetMenu(), the value of the parameter CString strName seems to be garbage characters rather than the supplied value (ie. _T("Menu Bar") ) . This garbage CString is then passed to CXTPMenuBar::SetTitle() which errors out further up the call stack in the ATL/MFC class CSimpleStringT class. I'm guessing the error is caused by the garbage CString passed into GetMenu(). When the app is not compiled with /clr, the code works as expected. Also note that the XTreme Toolkit Pro dlls are NOT compiled using /clr in either case. Has anyone run into this problem before? And/or can someone help with this? Thanks.

Oleg Members Profile Send Private Message Find Members Posts Add to Buddy List Admin Group Joined: 21 May 2003 Location: United States Status: Offline Points: 11234	Post Options Post Reply Quote Oleg Report Post Thanks(0) Quote Reply Posted: 18 March 2005 at 12:27am
	So may be you need to compile dll WITH /clr ?
	Oleg, Support Team CODEJOCK SOFTWARE SOLUTIONS