The CWPSTRUCT structure defines the message parameters passed to a WH_CALLWNDPROC hook procedure.
typedef struct tagCWPSTRUCT { // cwps
LPARAM lParam;
WPARAM wParam;
UINT message;
HWND hwnd;
} CWPSTRUCT;
Members
lParam
Specifies additional information about the message. The exact meaning depends on the message value.
wParam
Specifies additional information about the message. The exact meaning depends on the message value.
message
Specifies the message.
hwnd
Identifies the window to receive the message.
See Also