我正在尝试处理屏幕上的鼠标事件(客户端窗口外)。我使用纯Win32 API。我已经创建了带有SetWindowHookEx函数的单独DLL,并将其引用到我的Win32应用程序中。但是它只处理窗口事件,当鼠标在窗口外或窗口不活动时,什么都不会发生。
//Hook.h
#ifndef _DEFINED_44E531B1_14D3_11d5_A025_006067718D04
#define _DEFINED_44E531B1_14D3_11d5_A025_006067718D04
#if _MSC_VER > 1000
#pragma once
#endif
#ifdef __cplusplus
extern "C" {
#endif // __cplusplus
#ifdef _COMPILING_44E531B1_14D3_11d5_A025_006067718D04
#define LIBSPEC __declspec(dllexport)
#else
#define LIBSPEC __declspec(dllimport)
#endif // _COMPILING_44E531B1_14D3_11d5_A025_006067718D04
LIBSPEC BOOL InstallHook(HWND hWnd);
LIBSPEC BOOL UnInstallHook(HWND hWnd);
#undef LIBSPEC
#ifdef __cplusplus
}
#define UWM_MOUSEMOVE_MSG (L"UWM_MOUSEMOVE_USER_MSG")
#define UWM_MOUSELBUTTONUP_MSG ( L"UWM_MOUSELBUTTONUP_USER_MSG" )
#define UWM_MOUSELBUTTONDOWN_MSG ( L"UWM_MOUSELBUTTONDOWN_USER_MSG" )
#define UWM_MOUSERBUTTONUP_MSG ( L"UWM_MOUSERBUTTONUP_USER_MSG" )
#define UWM_MOUSERBUTTONDOWN_MSG ( L"UWM_MOUSERBUTTONDOWN_USER_MSG" )
#define UWM_MOUSELDBCLICK_MSG ( L"UWM_MOUSERBUTTONDOWN_USER_MSG" )
#endif // __cplusplus
#endif // _DEFINED_44E531B1_14D3_11d5_A025_006067718D04
钩子.cpp
Hook.cpp :定义 DLL 应用程序的导出函数。//
#include "stdafx.h"
#include "Hook.h"
#pragma data_seg()
#pragma comment(linker, "/section:.Segment,rws")
HWND hWndServer = NULL;
UINT UWM_MOUSEMOVE;
UINT UWM_MOUSELBUTTONUP;
UINT UWM_MOUSELBUTTONDOWN;
UINT UWM_MOUSERBUTTONUP;
UINT UWM_MOUSERBUTTONDOWN;
UINT UWM_MOUSELDBCLICK;
HINSTANCE hInst;
//HWND hWndServer = NULL;
HHOOK hook;
static LRESULT CALLBACK MouseMsgProc(UINT nCode, WPARAM wParam, LPARAM lParam)
{
if(nCode < 0)
{
CallNextHookEx(hook, nCode, wParam, lParam);
return 0;
}
LPMSG msg = (LPMSG)lParam;
switch( msg->message )
{
case WM_LBUTTONDBLCLK:
SendMessage( hWndServer, UWM_MOUSELDBCLICK, 0 , 0);
break;
case WM_MOUSEMOVE:
SendMessage( hWndServer, UWM_MOUSEMOVE, 0, 0);
break;
case WM_NCMOUSEMOVE:
SendMessage( hWndServer, UWM_MOUSEMOVE, 0, 0);
break;
case WM_LBUTTONDOWN:
SendMessage( hWndServer, UWM_MOUSELBUTTONDOWN, 0 , 0 );
break;
case WM_NCLBUTTONDOWN:
SendMessage( hWndServer, UWM_MOUSELBUTTONDOWN, 0 , 0);
break;
case WM_LBUTTONUP:
SendMessage( hWndServer, UWM_MOUSELBUTTONUP, 0 , 0 );
break;
case WM_NCLBUTTONUP:
SendMessage( hWndServer, UWM_MOUSELBUTTONUP, 0 , 0);
break;
case WM_RBUTTONDOWN:
SendMessage( hWndServer, UWM_MOUSERBUTTONDOWN, 0 , 0 );
break;
case WM_NCRBUTTONDOWN:
SendMessage( hWndServer, UWM_MOUSERBUTTONDOWN, 0 , 0);
break;
case WM_RBUTTONUP:
SendMessage( hWndServer, UWM_MOUSERBUTTONUP, 0 , 0 );
break;
case WM_NCRBUTTONUP:
SendMessage( hWndServer, UWM_MOUSERBUTTONUP, 0 , 0);
break;
default:
break;
}
return CallNextHookEx(hook, nCode, wParam, lParam);
}
__declspec(dllexport) BOOL InstallHook( HWND hWndParent)
{
if(hWndServer != NULL)
return FALSE; // already hooked!
hook = SetWindowsHookEx( WH_GETMESSAGE, (HOOKPROC)MouseMsgProc,
hInst, 0);
if(hook != NULL)
{
hWndServer = hWndParent;
return TRUE;
}
return FALSE;
}
__declspec(dllexport) BOOL UnInstallHook( HWND hWndParent )
{
if(hWndParent != hWndServer || hWndParent == NULL)
return FALSE;
BOOL unhooked = UnhookWindowsHookEx(hook);
if(unhooked)
hWndServer = NULL;
return unhooked;
return TRUE;
}
BOOL APIENTRY DllMain( HMODULE hModule,
DWORD ul_reason_for_call,
LPVOID lpReserved
)
{
switch (ul_reason_for_call)
{
case DLL_PROCESS_ATTACH:
hInst = hModule;
UWM_MOUSEMOVE = ::RegisterWindowMessage(UWM_MOUSEMOVE_MSG);
UWM_MOUSELBUTTONUP = ::RegisterWindowMessage(UWM_MOUSELBUTTONUP_MSG);
UWM_MOUSELBUTTONDOWN = ::RegisterWindowMessage(UWM_MOUSELBUTTONDOWN_MSG);
UWM_MOUSERBUTTONUP = ::RegisterWindowMessage(UWM_MOUSERBUTTONUP_MSG);
UWM_MOUSERBUTTONDOWN = ::RegisterWindowMessage(UWM_MOUSERBUTTONDOWN_MSG);
UWM_MOUSELDBCLICK = ::RegisterWindowMessage(UWM_MOUSELDBCLICK_MSG);
case DLL_THREAD_ATTACH:
case DLL_THREAD_DETACH:
case DLL_PROCESS_DETACH:
break;
}
return TRUE;
}
Win32 应用程序主.cpp
#include "stdafx.h"
#include "stdafx.h"
#include <sstream>
#include "strsafe.h"
#include "../Hook/Hook.h"
#define MAX_LOADSTRING 100
// Global Variables:
HINSTANCE hInst; // current instance
TCHAR szTitle[MAX_LOADSTRING]; // The title bar text
TCHAR szWindowClass[MAX_LOADSTRING]; // the main window class name
// Forward declarations of functions included in this code module:
ATOM MyRegisterClass(HINSTANCE hInstance);
BOOL InitInstance(HINSTANCE, int);
LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);
INT_PTR CALLBACK About(HWND, UINT, WPARAM, LPARAM);
//Mouse Events
static UINT UWM_MOUSEDBCLICK = ::RegisterWindowMessage( UWM_MOUSELDBCLICK_MSG );
static UINT UWM_MOUSELBUTTONUP = ::RegisterWindowMessage(UWM_MOUSELBUTTONUP_MSG);;
static UINT UWM_MOUSELBUTTONDOWN = ::RegisterWindowMessage(UWM_MOUSELBUTTONDOWN_MSG);
static UINT UWM_MOUSERBUTTONUP = ::RegisterWindowMessage(UWM_MOUSERBUTTONUP_MSG);
static UINT UWM_MOUSERBUTTONDOWN = ::RegisterWindowMessage(UWM_MOUSERBUTTONDOWN_MSG);
static UINT UWM_MOUSEMOVE = ::RegisterWindowMessage(UWM_MOUSEMOVE_MSG);
//
int APIENTRY _tWinMain(_In_ HINSTANCE hInstance,
_In_opt_ HINSTANCE hPrevInstance,
_In_ LPTSTR lpCmdLine,
_In_ int nCmdShow)
{
UNREFERENCED_PARAMETER(hPrevInstance);
UNREFERENCED_PARAMETER(lpCmdLine);
// TODO: Place code here.
MSG msg;
HACCEL hAccelTable;
// Initialize global strings
LoadString(hInstance, IDS_APP_TITLE, szTitle, MAX_LOADSTRING);
LoadString(hInstance, IDC_ACTIONX, szWindowClass, MAX_LOADSTRING);
MyRegisterClass(hInstance);
// Perform application initialization:
if (!InitInstance (hInstance, nCmdShow))
{
return FALSE;
}
hAccelTable = LoadAccelerators(hInstance, MAKEINTRESOURCE(IDC_ACTIONX));
// Main message loop:
while (GetMessage(&msg, NULL, 0, 0))
{
if (!TranslateAccelerator(msg.hwnd, hAccelTable, &msg))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
}
return (int) msg.wParam;
}
//
// FUNCTION: MyRegisterClass()
//
// PURPOSE: Registers the window class.
//
ATOM MyRegisterClass(HINSTANCE hInstance)
{
WNDCLASSEX wcex;
wcex.cbSize = sizeof(WNDCLASSEX);
wcex.style = CS_HREDRAW | CS_VREDRAW;
wcex.lpfnWndProc = WndProc;
wcex.cbClsExtra = 0;
wcex.cbWndExtra = 0;
wcex.hInstance = hInstance;
wcex.hIcon = LoadIcon(hInstance, MAKEINTRESOURCE(IDI_ACTIONX));
wcex.hCursor = LoadCursor(NULL, IDC_ARROW);
wcex.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);
wcex.lpszMenuName = MAKEINTRESOURCE(IDC_ACTIONX);
wcex.lpszClassName = szWindowClass;
wcex.hIconSm = LoadIcon(wcex.hInstance, MAKEINTRESOURCE(IDI_SMALL));
return RegisterClassEx(&wcex);
}
//
// FUNCTION: InitInstance(HINSTANCE, int)
//
// PURPOSE: Saves instance handle and creates main window
//
// COMMENTS:
//
// In this function, we save the instance handle in a global variable and
// create and display the main program window.
//
BOOL InitInstance(HINSTANCE hInstance, int nCmdShow)
{
HWND hWnd;
hInst = hInstance; // Store instance handle in our global variable
hWnd = CreateWindow(szWindowClass, szTitle, WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, NULL, NULL, hInstance, NULL);
if (!hWnd)
{
return FALSE;
}
ShowWindow(hWnd, nCmdShow);
UpdateWindow(hWnd);
BOOL result=InstallHook(hWnd);
return TRUE;
}
//
// FUNCTION: WndProc(HWND, UINT, WPARAM, LPARAM)
//
// PURPOSE: Processes messages for the main window.
//
// WM_COMMAND - process the application menu
// WM_PAINT - Paint the main window
// WM_DESTROY - post a quit message and return
//
//
LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
int wmId, wmEvent;
PAINTSTRUCT ps;
HDC hdc;
//Global Mouse Move Handle
if(message==UWM_MOUSEMOVE){
MessageBox(
NULL,
(LPCWSTR)L"Resource not availablenDo you want to try again?",
(LPCWSTR)L"Account Details",
MB_ICONWARNING | MB_CANCELTRYCONTINUE | MB_DEFBUTTON2
);
return 0;
}
switch (message)
{
case WM_COMMAND:
wmId = LOWORD(wParam);
wmEvent = HIWORD(wParam);
// Parse the menu selections:
switch (wmId)
{
case IDM_ABOUT:
DialogBox(hInst, MAKEINTRESOURCE(IDD_ABOUTBOX), hWnd, About);
break;
case IDM_EXIT:
DestroyWindow(hWnd);
break;
case IDM_PLAY:
PlayMouse();
break;
default:
return DefWindowProc(hWnd, message, wParam, lParam);
}
break;
case WM_PAINT:
hdc = BeginPaint(hWnd, &ps);
// TODO: Add any drawing code here...
EndPaint(hWnd, &ps);
break;
case WM_DESTROY:
PostQuitMessage(0);
break;
default:
return DefWindowProc(hWnd, message, wParam, lParam);
}
return 0;
}
// Message handler for about box.
INT_PTR CALLBACK About(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam)
{
UNREFERENCED_PARAMETER(lParam);
switch (message)
{
case WM_INITDIALOG:
return (INT_PTR)TRUE;
case WM_COMMAND:
if (LOWORD(wParam) == IDOK || LOWORD(wParam) == IDCANCEL)
{
EndDialog(hDlg, LOWORD(wParam));
return (INT_PTR)TRUE;
}
break;
}
return (INT_PTR)FALSE;
}
使用WH_MOUSE钩子仅挂钩鼠标消息。
几点建议:
- 确保钩子安装成功(SetWindowsHookEx 返回非 NULL 值)
- 确保消息传递到挂钩过程(将断点设置为这些点或使用跟踪函数)
- 您需要将目标窗口的 HWND 发送到每个进程或发送广播消息
- 对于 Windows Vista 及更高版本,具有较低权限的进程无法将消息发送到具有较高权限的进程。您需要使用更改窗口消息过滤器将必要的消息添加到过滤器中
- 使用
PostMesssage
而不是 SendMessage,无论如何您都不需要在此处阻止呼叫
在定义钩子时,您必须为要拦截信号的窗口提供句柄。也许传递桌面的句柄甚至可以在客户端窗口之外捕获所有鼠标事件。