CDN_HELP notification code
[Starting with Windows Vista, the Open and Save As common dialog boxes have been superseded by the Common Item Dialog. We recommended that you use the Common Item Dialog API instead of these dialog boxes from the Common Dialog Box Library.]
Sent by an Explorer-style Open or Save As dialog box when the user clicks the Help button.
Your OFNHookProc hook procedure receives this message in the form of a WM_NOTIFY message.
#define CDN_FIRST (0U-601U)
#define CDN_HELP (CDN_FIRST - 0x0004)
Parameters
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wParam
-
This parameter is not used.
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lParam
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A pointer to an OFNOTIFY structure. The OFNOTIFY structure contains an NMHDR structure whose code member indicates the CDN_HELP notification message.
Return value
The return value is ignored.
Remarks
The system sends this notification only if the dialog box was created using the OFN_EXPLORER value.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client |
Windows 2000 Professional [desktop apps only] |
| Minimum supported server |
Windows 2000 Server [desktop apps only] |
| Header |
|
See also
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Reference
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Conceptual