Hello,

  I am very newbie for MFC environment. I am developing a MFC Based
Application. Application main window is a document/view based MDI
window.
I want to do the following things,

* Currently, when i start the application it shows the Main Window and
Control
  goes to the Main Window. Now i need to show a Login Dialog Box  
(Modal) and
  this should get the inputs from users and validate the input and
then finally
  control should go to the Main Window.

Please provide me your idea's.

Thanks in advance.

Bye,
Subramn

In the InitInstance of your CWinApp-derived class:

After you have created and shown your main window, but before you exit the
InitInstance you can generate a modal dialog box.  Based on the result of
that dialog you can decide to proceed or terminate the application.  This is
loosely based on one of my programs:

// near the end of CMyApp::InitInstance
// finish mainframe activation
 g_pMainFrame->ActivateFrame();
// temporarily disable the mainframe
 g_pMainFrame->EnableWindow(FALSE);

// run the login dialog
 if (!LoginUser())
 {
  // if login fail, terminate application
  return FALSE;
 }
 else
 {
// otherwise, enable the mainframe
  g_pMainFrame->EnableWindow(TRUE);
  return TRUE;
 }

A simplified LoginUser looks something like this:

bool CMyApp::LoginUser()
{
    // assume login failure
    bool LoggedIn = false;
    // our login dialog
    LoginDlg dlg;

    // run the login dialog
    if (dlg.DoModal() == IDOK)
    {
        LoggedIn = true;
    }

    // return the result
    return LoggedIn;

HTH,

TFM3

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