User Interface Programming

//
// Disabling and Re-enabling a Default But­ton:
//
BEGIN_MESSAGE_MAP(TestDialog, CDialog)
//{{AFX_MSG_MAP(TestDialog)
ON_EN_SETFOCUS(IDC_MULTILINE, OnSetfocusMultiline)
ON_EN_KILLFOCUS(IDC_MULTILINE, OnKillfocusMultiline)
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
 
//////////////////////////////////////////////
// TestDialog mes­sage handlers
// The member _defButton is of class CButton.
 
void TestDialog::OnSetfocusMultiline() {
 
    SetDefID( 0 ); // sends DM_SETDEFID
    _defButton.SetButtonStyle(
        _defButton.GetButtonStyle() & ~BS_DEFPUSHBUTTON );
}
 
void TestDialog::OnKillfocusMultiline() {
 
    SetDefID( IDC_OK ); // sends DM_SETDEFID
    _defButton.SetButtonStyle(
        _defButton.GetButtonStyle() | BS_DEFPUSHBUTTON );
}
 
// end of file

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