Note
Access to this page requires authorization. You can try signing in or changing directories.
Access to this page requires authorization. You can try changing directories.
Defines the message parameters passed to a WH_CALLWNDPROC hook procedure, CallWindowProcW function/CallWindowProcA function.
Syntax
typedef struct tagCWPSTRUCT {
LPARAM lParam;
WPARAM wParam;
UINT message;
HWND hwnd;
} CWPSTRUCT, *PCWPSTRUCT, *NPCWPSTRUCT, *LPCWPSTRUCT;
Members
lParam
Type: LPARAM
Additional information about the message. The exact meaning depends on the message value.
wParam
Type: WPARAM
Additional information about the message. The exact meaning depends on the message value.
message
Type: UINT
The message.
hwnd
Type: HWND
A handle to the window to receive the message.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows 2000 Professional [desktop apps only] |
| Minimum supported server | Windows 2000 Server [desktop apps only] |
| Header | winuser.h (include Windows.h) |