How to call Dialog window (formed as resource) from a .DLL

[Igor Vartanov]

Below is extract from new .DLL application class, which doesn't work (resource IDD_FORMVIEW, associated with class CPixie3_DLG in't displayed).
It's shorter, than previous one, as CPixie3_DLG class is already created.

BOOL CPixie3_GUIApp::InitInstance()
{
	CWinApp::InitInstance();
	m_pMainWnd = new CPixie3_DLG();
	m_pMainWnd->ShowWindow(SW_SHOW);
	m_pMainWnd->UpdateWindow();
	return TRUE;
}

Where is my mistake ?

Well, except the fact that you go with technology you are not familiar with... These are two typical snippets for dialogs:
1.

BOOL CPixie3_GUIApp::InitInstance()
{
	CWinApp::InitInstance();
	CPixie3_DLG * pDlg = new CPixie3_DLG();
	m_pMainWnd = pDlg;
        pDlg->Create(IDD_FORMVIEW);
        pDlg->ShowWindow(SW_SHOW);
	pDlg->UpdateWindow();
	return TRUE;
}

The code implies the dialog class is adapted to be destroyed explicitly by calling DestroyWindow(), but not CDialog::OnCancel() or CDialog::OnOK(). And C++ object is deleted explicitly in PostNcDestroy() handler.

2.

BOOL CPixie3_GUIApp::InitInstance()
{
	CWinApp::InitInstance();
	CPixie3_DLG dlg;
        dlg.DoModal();
	return FALSE;
}

The code implies the dialog is destroyed by OnOK or OnCancel, and C++ object is destroyed automatically on leaving InitInstance scope..