hook.h

#pragma once

#define WH_JOURNALRECORD    0
#define WH_JOURNALPLAYBACK  1
#define WH_KEYBOARD_LL      20
#define WH_MOUSE_LL         21

/*
 * Hook Codes
 */
#define HC_ACTION           0
#define HC_GETNEXT          1
#define HC_SKIP             2
#define HC_NOREMOVE         3
#define HC_NOREM            HC_NOREMOVE
#define HC_SYSMODALON       4
#define HC_SYSMODALOFF      5

typedef struct tagKBDLLHOOKSTRUCT {
    DWORD vkCode;        // virtual key code
    DWORD scanCode;        // scan code    DWORD flags;       // flags
    DWORD flags;        // unused
    DWORD time;            // time stamp for this message
    DWORD dwExtraInfo;    // extra info from the driver or keybd_event
} KBDLLHOOKSTRUCT, *PKBDLLHOOKSTRUCT;

typedef struct {
    POINT pt;           // point of the cursor in screen coordinate
    DWORD mouseData;    // if WM_MOUSEWHEEL, the high-order word of this member is the wheel delta.
    DWORD flags;        // unused
    DWORD time;         // time stamp for this message
    DWORD dwExtraInfo;  // extra info
} MSLLHOOKSTRUCT, *PMSLLHOOKSTRUCT;

typedef LRESULT (CALLBACK* HOOKPROC)(int code, WPARAM wParam, LPARAM lParam);
typedef HHOOK   (WINAPI* _SetWindowsHookExW)(int idHook, HOOKPROC lpfn, HINSTANCE hmod, DWORD dwThreadId);
typedef BOOL    (WINAPI* _UnhookWindowsHookEx)(HHOOK hhk);
typedef LRESULT (WINAPI* _CallNextHookEx)(HHOOK hhk, int nCode, WPARAM wParam, LPARAM lParam);