MOUSEHOOKSTRUCT info Overview Group

The MOUSEHOOKSTRUCT structure contains information about a mouse event passed to a WH_MOUSE hook procedure, MouseProc.

typedef struct tagMOUSEHOOKSTRUCT { // ms 

    POINT pt; 

    HWND  hwnd; 

    UINT  wHitTestCode; 

    DWORD dwExtraInfo; 

} MOUSEHOOKSTRUCT;

Members

pt: Specifies a POINT structure that contains the x- and y-coordinates of the cursor, in screen coordinates.
hwnd: Identifies the window that will receive the mouse message corresponding to the mouse event.
wHitTestCode: Specifies the hit-test value. For a list of hit-test values, see the description of the WM_NCHITTEST message.
dwExtraInfo: Specifies extra information associated with the message.