计算机二级C技巧:VC6.0控制鼠标反方向移动计算机二级考试

文章作者 100test 发表时间 2009:04:10 01:30:02
来源 100Test.Com百考试题网

　　dll代码：
　　#define _WIN32_WINNT 0x400
　　#include <.windows.h>.
　　#pragma data_seg("Shared")
　　HHOOK NextHook = NULL.
　　SIZE Screen = {0, 0}.
　　POINT pt = {0, 0}.
　　#pragma data_seg()
　　HMODULE 设为首页 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).
　　}

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