計(jì)算機(jī)二級(jí)C技巧:VC6.0控制鼠標(biāo)反方向移動(dòng)

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dll代碼：
    #define _WIN32_WINNT 0x400
    #include
    #pragma data_seg("Shared")
    HHOOK NextHook = NULL;
    SIZE Screen = {0, 0};
    POINT pt = {0, 0};
    #pragma data_seg()
    HMODULE 設(shè)為首頁 Module;
    BOOL APIENTRY DllMain(HMODULE hModule, DWORD ul_reason_for_call, LPVOID lpReserved)
    {
    if (ul_reason_for_call == DLL_PROCESS_ATTACH)
    Module = hModule;
    return TRUE;
    }
    LRESULT CALLBACK LowLevelMouseProc(int nCode, WPARAM wParam, LPARAM lParam)
    {
    if (nCode == 0)
    {
    PMSLLHOOKSTRUCT mhs = (PMSLLHOOKSTRUCT)lParam;
    if (mhs->pt.x != pt.x || mhs->pt.y != pt.y)
    {
    pt.x = pt.x - (mhs->pt.x - pt.x);
    pt.y = pt.y - (mhs->pt.y - pt.y);
    if (pt.x < 0) pt.x = 0;
    if (pt.y < 0) pt.y = 0;
    if (pt.x >= Screen.cx) pt.x = Screen.cx - 1;
    if (pt.y >= Screen.cy) pt.y = Screen.cy - 1;
    SetCursorPos(pt.x, pt.y);
    return TRUE;
    }
    }
    return CallNextHookEx(NextHook, nCode, wParam, lParam);
    }
    __declspec(dllexport) void StartHook()
    {
    Screen.cx = GetSystemMetrics(SM_CXSCREEN);
    Screen.cy = GetSystemMetrics(SM_CYSCREEN);
    GetCursorPos(&pt);
    NextHook = SetWindowsHookEx(WH_MOUSE_LL, LowLevelMouseProc, Module, 0);
    }
    __declspec(dllexport) void StopHook()
    {
    UnhookWindowsHookEx(NextHook);
    }