typedef struct tagMOUSEHOOKSTRUCT { /* ms */
POINT pt;
HWND hwnd;
UINT wHitTestCode;
DWORD dwExtraInfo;
} MOUSEHOOKSTRUCT;
The MOUSEHOOKSTRUCT structure contains information about a mouse event.
pt
Specifies a POINT structure that contains the x- and y-coordinates of the mouse cursor (in screen coordinates).
hWnd
Identifies the window that will receive the mouse message that corresponds to the mouse event.
wHitTextCode
Specifies the hit-test code.
dwExtraInfo
Specifies extra information associated a message placed in the system message queue by the hardware_event function.
GetMessageExtraInfo, SetWindowsHook