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CDialog::OnInitDialog 

This member function is called in response to the WM_INITDIALOG message.


virtual  BOOL OnInitDialog( );

Specifies whether the application has set the input focus to one of the controls in the dialog box. If OnInitDialog returns nonzero, Windows sets the input focus to the first control in the dialog box. The application can return 0 only if it has explicitly set the input focus to one of the controls in the dialog box.

This message is sent to the dialog box during the Create, CreateIndirect, or DoModal calls, which occur immediately before the dialog box is displayed.

Override this member function if you need to perform special processing when the dialog box is initialized. In the overridden version, first call the base class OnInitDialog but disregard its return value. You will normally return TRUE from your overridden member function.

Windows calls the OnInitDialog function via the standard global dialog-box procedure common to all Microsoft Foundation Class Library dialog boxes, rather than through your message map, so you do not need a message-map entry for this member function.

/* MyDialog.cpp */
#include "MyDialog.h"

BOOL CMyDialog::OnInitDialog() 
{
   CDialog::OnInitDialog();
   
   // TODO: Add extra initialization here
   m_cMyEdit.SetWindowText("My Name"); // Initialize control values
   m_cMyList.ShowWindow(SW_HIDE);      // Show or hide a control, etc.

   return TRUE;   // return TRUE unless you set the focus to a control
                  // EXCEPTION: OCX Property Pages should return FALSE
}

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