鼠标钩子示例代码，区分鼠标的左右按键，并且画不同颜色的圆晕以醒目提示。

// MouseHook.cpp : Defines the initialization routines for the DLL. // #include "stdafx.h" #include "MouseHook.h" #ifdef _DEBUG #define new DEBUG_NEW #undef THIS_FILE static char THIS_FILE[] = __FILE__; #endif // // Note! // // If this DLL is dynamically linked against the MFC // DLLs, any functions exported from this DLL which // call into MFC must have the AFX_MANAGE_STATE macro // added at the very beginning of the function. // // For example: // // extern "C" BOOL PASCAL EXPORT ExportedFunction() // { // AFX_MANAGE_STATE(AfxGetStaticModuleState()); // // normal function body here // } // // It is very important that this macro appear in each // function, prior to any calls into MFC. This means that // it must appear as the first statement within the // function, even before any object variable declarations // as their constructors may generate calls into the MFC // DLL. // // Please see MFC Technical Notes 33 and 58 for additional // details. // ///////////////////////////////////////////////////////////////////////////// // CMouseHookApp BEGIN_MESSAGE_MAP(CMouseHookApp, CWinApp) //{{AFX_MSG_MAP(CMouseHookApp) // NOTE - the ClassWizard will add and remove mapping macros here. // DO NOT EDIT what you see in these blocks of generated code! //}}AFX_MSG_MAP END_MESSAGE_MAP() ///////////////////////////////////////////////////////////////////////////// // CMouseHookApp construction CMouseHookApp::CMouseHookApp() { // TODO: add construction code here, // Place all significant initialization in InitInstance } ///////////////////////////////////////////////////////////////////////////// // The one and only CMouseHookApp object CMouseHookApp theApp;