大家好，又见面了，我是你们的朋友全栈君。

#include "Windows.h"
#include "tchar.h"
#include "resource.h"


HINSTANCE g_hInstance ;
static HHOOK hHook = NULL;


INT_PTR CALLBACK ProcWinMain(HWND hWnd, UINT Msg, WPARAM wParam ,LPARAM lParam);
LRESULT CALLBACK MouseProc(int nCode, WPARAM wParam,LPARAM lParam);		
LRESULT CALLBACK BoardProc(int nCode, WPARAM wParam,LPARAM lParam);		


int WINAPI WinMain(     HINSTANCE hInstance,
				   HINSTANCE hPrevInstance,
				   LPSTR lpCmdLine,
				   int nCmdShow
				   )
{
	static TCHAR DlgName[] = _T("InnerHook");
	g_hInstance = hInstance ;
	DialogBoxParam(hInstance,DlgName,NULL,( DLGPROC)ProcWinMain,NULL);
	return 0;
}


INT_PTR CALLBACK ProcWinMain(   HWND hWnd, 
							 UINT Msg, 
							 WPARAM wParam, 
							 LPARAM lParam 
							 )
{
	static TCHAR unLockStr[] = _T("Unlocking");
	static TCHAR LockStr[] = _T("Locking");
	static BOOL isLock = FALSE;
	static BOOL isLock2 = FALSE;
	static HHOOK hHook2 = NULL;
	switch(Msg)
	{
	case WM_INITDIALOG:
		{
			SetFocus(GetDlgItem(hWnd,IDC_EDITTEXT));
		}
		break;


	case WM_CLOSE:
		EndDialog(hWnd,NULL);
		break;
	case WM_COMMAND:
		{
			switch(LOWORD(wParam))
			{
				case ID_BTNHOOKBOARD :
				{
					if(isLock == FALSE)
					{
						hHook = SetWindowsHookEx(WH_KEYBOARD,BoardProc,NULL,GetCurrentThreadId());
						SetDlgItemText(hWnd,ID_BTNHOOKBOARD,LockStr);
						isLock = TRUE;
					}
					else
					{
						SetDlgItemText(hWnd,ID_BTNHOOKBOARD,unLockStr);
						isLock = FALSE;	
						UnhookWindowsHookEx(hHook);
					}
				}
				break;
				case ID_BTNHOOKMOUSE :
				{
					if(isLock2 == FALSE)
					{
						hHook2 = SetWindowsHookEx(WH_MOUSE,MouseProc,NULL,GetCurrentThreadId());
						SetDlgItemText(hWnd,ID_BTNHOOKMOUSE,LockStr);
						isLock2 = TRUE;
					}
					else
					{
						SetDlgItemText(hWnd,ID_BTNHOOKMOUSE,unLockStr);
						isLock2 = FALSE;	
						UnhookWindowsHookEx(hHook2);
					}
				}
				break;
			}
		}
		break;
	default:
		return FALSE; 
	}
	return TRUE;
}


LRESULT CALLBACK MouseProc(int nCode, WPARAM wParam,LPARAM lParam)
{
	return 1;			//返回非0值，表示处理了该消息
}


LRESULT CALLBACK BoardProc(int nCode, WPARAM wParam,LPARAM lParam)
{
	if (wParam == VK_RETURN || wParam == '1' || wParam == '0')
	{
		return CallNextHookEx(hHook,nCode,wParam,lParam);	//表示不处理该消息，交还给Windows自己处理
	}
	else
		return 1;		//表示已经处理了该消息
}

Hook技术简介