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NMHDR info  Overview  Group

The NMHDR structure contains information about a notification message. The pointer to this structure is specified as the lParam member of the WM_NOTIFY message.

typedef struct tagNMHDR { 

    HWND hwndFrom; 

    UINT idFrom; 

    UINT code; 

} NMHDR; 

 

Members

hwndFrom
Window handle of control sending message
idFrom
Identifier of control sending message
code
Specifies the notification code. This member can be a control-specific notification code, or it can be one of the following common notification values:

Value

Meaning

NM_CLICK

The user has clicked the left mouse button within the control.

NM_DBLCLK

The user has double-clicked the left mouse button within the control.

NM_KILLFOCUS

The control has lost the input focus.

NM_OUTOFMEMORY

The control could not complete an operation because there was not enough memory available.

NM_RCLICK

The user has clicked the right mouse button within the control.

NM_RDBLCLK

The user has double-clicked the right mouse button within the control.

NM_RETURN

The control has the input focus, and the user has pressed the ENTER key.

NM_SETFOCUS

The control has received the input focus.

See also:


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