MFC Regular-DLL: Modeless Dialog (Show / Close)

Hello,

(Sorry for my bad english... i'll try my best :-))

I trying to manage a modeless dialog in a regular MFC DLL. I've created a new regular DLL-Project with the wizard. The Main-Dialog of the application (DLL) is the modeless dialog.

The Wizard created a Class CMyApp witch is derivated from CWinApp. This class contains only a Pointer to the modeless dialog (CMainDlg) and two Methods to mangage the Dialog:

- ShowGui()
- Close()

Code in ShowGui:
m_pMainDlg = new CMainDlg(m_pHardwareManager);
m_pMainWnd = m_pMainDlg;
m_pMainDlg->Create();
m_pMainDlg->ShowWindow(SW_SHOW);

Code in CleanUp():
m_pMainWnd->DestroyWindow();
delete m_pMainWnd;

The Wizard created the one and only global object "theApp" and I export following two global methods:
- Show()
- Close()

Code in Show():
theApp.ShowGui();

Code in Close()
theApp.CleanUp();

My first question is, is this the right way to export a modeless dialog in a DLL or should I choose a other way?

The second question is why I always get an error if I call the Close(); Function. Every time i try to close the Dialog, my application crashes. I've also tried to send an WM_DESTROY message to the Dialog and i get the same problem. Where is the fault?

Thank you for reading!

Best regards
CKerberos




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