Focus on Modal Dialog (MFC)

问题:

I create modal dialog like this :

CDialog dlg;
dlg.DoModal();

but when window opens I can access background windows of my program (move them and close them) but I need focus only on my curent window. (I think modal dialog shouldn't behave like this)

How can I do this?

EDIT:

It seems I found the reason of this behavior: before open my dialog,I open another modal dialog in CMyDlg::OnInitDialog() function, when I comment this,my dialog again became modal. But how to solve this problem?

Some code describing problem:

void CMyView::OnSomeButtonPress() 
{
    CMyDlg dlg;
    dlg.DoModal();
}

BOOL CMyDlg::OnInitDialog() 
{
    CDialog::OnInitDialog();

    //some init here...


    //new modal dialog here (if comment this CMyDlg works as modal)
    CSettingsDlg dlg;
    dlg.DoModal();

    //...
 }

回答1:

you can solve your problem by specifying parent window for the dialog, you can do by passing this pointer in constructor of each dialog class as shown in code .

void CMyView::OnSomeButtonPress()
{
    CMyDlg dlg(this);
    dlg.DoModal();
}

BOOL CMyDlg::OnInitDialog() 
{
     CDialog::OnInitDialog();

    //some init here...
    CSettingsDlg dlg(this);
    dlg.DoModal();

    //...
 }

回答2:

You cannot use a dialog from within the OnInitDialog method or from any function called from the OnInitDialog method. You have to use the DoModal() of CSettingsDlg from else where.

Something like this:

void CMyView::OnSomeButtonPress() 
{
    //new modal dialog here (if comment this CMyDlg works as modal)
    CSettingsDlg dlgSettings;
    dlgSettings.DoModal();

    ...

    CMyDlg dlg;
    dlg.DoModal();
}

BOOL CMyDlg::OnInitDialog() 
{
    CDialog::OnInitDialog();

    //some init here...

    //...
 }