Important Notice

The pages on this site contain documentation for very old MS-DOS software, purely for historical purposes. If you're looking for up-to-date documentation, particularly for programming, you should not rely on the information found here, as it will be woefully out of date.

◄CWnd►                                        ◄Up► ◄Contents► ◄Index► ◄Back►
──Microsoft Foundation Classes──────────────────────────────────────────────
 
  virtual BOOL OnCommand( UINT wParam, LONG lParam );
 
  Parameter   Description
 
  <wParam>    Identifies the menu item or control.
 
  <lParam>    Specifies additional information. If the message is from a
              menu, the low-order word and the high-order word are both 0.
              If the message is from an accelerator, the low-order word is
              0 and the high-order word is 1. If the message is from a
              control, the low-order word is the handle of the window
              sending the message and the high-order word is the
              notification code.
 
  Remarks
 
  Called when the user selects an item from a CWnd menu, when a child
  control sends a notification message to CWnd, or when an access
  keystroke is translated.
 
  Access keystrokes that are defined to select items from the Control menu
  are translated to ◄WM_SYSCOMMAND► messages.
 
  If an access keystroke that corresponds to a menu item occurs when the
  CWnd is minimized, OnCommand is not called. However, if an access
  keystroke that does not match any of the items on the CWnd menu or on
  the Control menu occurs, OnCommand is called, even if CWnd is
  minimized.
 
  OnCommand processes the message map for control notification and
  ON_COMMAND entries, and calls the appropriate member function.
 
  Override this member function in your derived class to handle the
  ◄WM_COMMAND► message. An override will not process the message map
  unless the base class OnCommand is called.
 
  Return Value
 
  An application returns TRUE if it processes this message; otherwise
  FALSE.
 
  See Also
 
  ◄WM_SYSCOMMAND►, ◄WM_COMMAND►
 
 
                                     -♦-