Q140587: HOWTO: How to Change Default Button on CPropertySheet

Article: Q140587
Product(s): Microsoft C Compiler
Version(s): winnt:4.0
Operating System(s): 
Keyword(s): kbMFC kbPropSheet KbUIDesign kbVC kbGrpDSMFCATL
Last Modified: 06-MAY-2001

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The information in this article applies to:

- The Microsoft Foundation Classes (MFC), used with:
   - Microsoft Visual C++, 32-bit Editions, version 4.0 
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SUMMARY
=======

When a modal CPropertySheet is created, the default button is the OK button. To
change the default to a different button, derive a class from CPropertySheet,
override OnInitDialog(), and send a message of DM_SETDEFID to the sheet with the
ID of the new button.

MORE INFORMATION
================

The IDs of the buttons that are created in a modal CPropertySheet are:

  IDOK            - OK button
  IDCANCEL        - Cancel button
  ID_APPLY_NOW    - Apply button
  IDHELP          - Help button

Before you can set the focus to a button, the button must exist and be enabled.
By default, the Apply button on a modal CPropertySheet is not enabled; it has to
be explicitly enabled as shown in the sample code in this article.

If you want a button other than these default buttons to have the default focus,
you have to create the button, say IDC_MYBUTTON, and set focus to that button
using:

     SendMessage (DM_SETDEFID, IDC_MYBUTTON);

Sample Code
-----------

  // This code sets the Apply button as the default
  // CMySheet is derived from CPropertySheet

  BOOL CMySheet::OnInitDialog()
  {
          CPropertySheet::OnInitDialog();

          // Enable the Apply button
          GetPage(0)->SetModified ();
          // Set the Apply button as the default button
          SendMessage (DM_SETDEFID, ID_APPLY_NOW);

          return TRUE;
  }

Additional query words: kbinf 4.00

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Keywords          : kbMFC kbPropSheet KbUIDesign kbVC kbGrpDSMFCATL 
Technology        : kbAudDeveloper kbMFC
Version           : winnt:4.0
Issue type        : kbhowto

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