CDN_HELP

The CDN_HELP notification message is sent by an Explorer-style Open or Save As common dialog box when the user clicks the Help button. Your OFNHookProc hook procedure receives this message in the form of a WM_NOTIFY message.

CDN_HELP 
lpon = (LPOFNOTIFY) lParam; 
 

Parameters

lpon

Pointer to an OFNOTIFY structure.

The OFNOTIFY structure contains an NMHDR structure whose code member indicates the CDN_HELP notification code.

Return Values

The return value is ignored.

Remarks

The system sends this notification only if the dialog box was created using the OFN_EXPLORER value.

QuickInfo

  Windows NT: Requires version 4.0 or later.
  Windows: Requires Windows 95 or later.
  Windows CE: Requires version 1.0 or later.
  Header: Declared in commdlg.h.

See Also

Common Dialog Box Library Overview, Common Dialog Box Messages, GetOpenFileName, GetSaveFileName, NMHDR, OFNHookProc, OFNOTIFY, OPENFILENAME, WM_NOTIFY