用C++ Builder 5.0编HOOK程序

　　六

　　VC的程序

　　#include <windows.h>
#include <windowsx.h>
#include <tchar.h>
HINSTANCE g_hinstDll = NULL;
#pragma data_seg(".drectve")
　　 static char szLinkDirectiveShared[] = "-section:Shared,rws";
#pragma data_seg()
#pragma data_seg("Shared")
HHOOK g_hhook　　　= NULL;
HWND　g_hwndPost　= NULL;
UINT　g_uMsgNotify = WM_USER;
#pragma data_seg()
static LRESULT WINAPI KeyboardHook_HookProc (
　 int nCode,
　 WPARAM wParam,
　 LPARAM lParam)
{
　 LRESULT lResult = CallNextHookEx(g_hhook, nCode, wParam, lParam);
　 if (nCode == HC_ACTION)
　 {
　　　 PostMessage(g_hwndPost, g_uMsgNotify, wParam, lParam);
　 }
　 return(lResult);
}
BOOL WINAPI SetKeyboardHook (HWND hWndPost, UINT Msg)
{
　 HHOOK hhook;
　 if (g_hhook != NULL) return(FALSE);
　 g_hwndPost　= hWndPost;
　 g_uMsgNotify = Msg;
　 Sleep(0);
　 hhook = SetWindowsHookEx(WH_KEYBOARD, KeyboardHook_HookProc, g_hinstDll, 0);
　 InterlockedExchange((PLONG) &g_hhook, (LONG) hhook);
　 return(g_hhook != NULL);
}
BOOL WINAPI ReleaseKeyboardHook()
{
　 BOOL fOK = TRUE;
　 if (g_hhook != NULL)
　 {
　　　 fOK = UnhookWindowsHookEx(g_hhook);
　　　 g_hhook = NULL;
　 }
　 return(fOK);
}
BOOL WINAPI DllMain (HINSTANCE hinstDll, DWORD fdwReason, LPVOID lpvReserved)
{
　 switch (fdwReason)
　 {
　　　 case DLL_PROCESS_ATTACH:
　　　　 g_hinstDll = hinstDll;
　　　　 break;
　 }
　 return(TRUE);
}