Mouse hook system-wide lại chạy như local hook ???

[ngoctran89]

Xin chào, em đang viết Mouse hook dạng system-wide (rê chuột lên đâu là chương trình hiện ra Handle, ClassName, WndProc của đối tượng ấy). Nhưng khi chạy nó chỉ hoạt động được khi rê chuột lên phần màn hình của chương trình của mình, ra ngoài là hết linh nghiệm (như local hook vậy).

Đây là source của file DLL:

#include "stdafx.h"#include "Win32_Iczelion_HookDLL.h" #define WM_MOUSEHOOK WM_USER+10 HINSTANCE hInstance;HHOOK hHook;HWND hWnd; EXPORT HHOOK CALLBACK InstallHook(HWND);EXPORT void CALLBACK UninstallHook(void);EXPORT LRESULT CALLBACK MouseProc(int, WPARAM, LPARAM); BOOL APIENTRY DllMain( HMODULE hModule,                       DWORD  ul_reason_for_call,                       LPVOID lpReserved                     ){    switch (ul_reason_for_call)    {    case DLL_PROCESS_ATTACH:        hInstance = hModule;        break;    case DLL_THREAD_ATTACH:    case DLL_THREAD_DETACH:    case DLL_PROCESS_DETACH:        break;    }    return TRUE;} EXPORT HHOOK CALLBACK InstallHook(HWND hwnd){    hWnd = hwnd;    hHook = SetWindowsHookEx (WH_MOUSE, (HOOKPROC)MouseProc, hInstance, NULL);     return hHook;} EXPORT void CALLBACK UninstallHook(){    UnhookWindowsHookEx(hHook);} EXPORT void test(){    MessageBox(NULL, L"yeah", L"yeah", MB_OK);} EXPORT LRESULT CALLBACK MouseProc(int nCode, WPARAM wParam, LPARAM lParam){    CallNextHookEx(hHook, nCode, wParam, lParam);    POINT pt = {0};    GetCursorPos(&pt);    HANDLE handle = WindowFromPoint(pt);    PostMessage(hWnd, WM_MOUSEHOOK, (WPARAM)handle, 0);    return 0;}

Đây là source chương trình chính:

#include "stdafx.h"#include "Win32_Iczelion_Hook.h"#include "Win32_Iczelion_HookDLL.h" #define WM_MOUSEHOOK WM_USER+10 #define MAX_LOADSTRING 100 // Global Variables:HINSTANCE hInst;                                // current instanceTCHAR szTitle[MAX_LOADSTRING];                  // The title bar textTCHAR szWindowClass[MAX_LOADSTRING];            // the main window class nameHWND hWndEHandle;HWND hWndEClassName;HWND hWndEWndProc;HWND hWndBHook;HWND hWndBExit;HHOOK hHook;BOOL HookFlag = FALSE; // 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); 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_WIN32_ICZELION_HOOK, szWindowClass, MAX_LOADSTRING);    MyRegisterClass(hInstance);     // Perform application initialization:    if (!InitInstance (hInstance, nCmdShow))    {        return FALSE;    }     hAccelTable = LoadAccelerators(hInstance, MAKEINTRESOURCE(IDC_WIN32_ICZELION_HOOK));     // Main message loop:    while (GetMessage(&msg, NULL, 0, 0))    {        if (!TranslateAccelerator(msg.hwnd, hAccelTable, &msg))        {            TranslateMessage(&msg);            DispatchMessage(&msg);        }    }     return (int) msg.wParam;} 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_WIN32_ICZELION_HOOK));    wcex.hCursor        = LoadCursor(NULL, IDC_ARROW);    wcex.hbrBackground  = (HBRUSH)(COLOR_WINDOW+1);    wcex.lpszMenuName   = MAKEINTRESOURCE(IDC_WIN32_ICZELION_HOOK);    wcex.lpszClassName  = szWindowClass;    wcex.hIconSm        = LoadIcon(wcex.hInstance, MAKEINTRESOURCE(IDI_SMALL));     return RegisterClassEx(&wcex);} 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, 600, 300, NULL, NULL, hInstance, NULL);    hWndEHandle = CreateWindowEx(NULL, L"Edit", NULL,                        WS_CHILD | WS_VISIBLE | WS_BORDER | ES_LEFT | ES_AUTOHSCROLL,                        100,35,345,25,hWnd,(HMENU)IDC_HANDLE,hInstance,NULL);   hWndEClassName = CreateWindowEx(NULL, L"Edit", NULL,                        WS_CHILD | WS_VISIBLE | WS_BORDER | ES_LEFT | ES_AUTOHSCROLL,                        100,65,200,25,hWnd,(HMENU)IDC_CLASSNAME,hInstance,NULL);   hWndEWndProc = CreateWindowEx(NULL, L"Edit", NULL,                        WS_CHILD | WS_VISIBLE | WS_BORDER | ES_LEFT | ES_AUTOHSCROLL,                        100,95,200,25,hWnd,(HMENU)IDC_WNDPROC,hInstance,NULL);    hWndBHook = CreateWindowEx(NULL, L"Button", L"Hook",                         WS_CHILD | WS_VISIBLE | BS_DEFPUSHBUTTON,                        305,65,140,25,hWnd,(HMENU)IDC_HOOK,hInstance,NULL);   hWndBExit = CreateWindowEx(NULL, L"Button", L"Exit",                         WS_CHILD | WS_VISIBLE | BS_DEFPUSHBUTTON,                        305,95,140,25,hWnd,(HMENU)IDC_EXIT,hInstance,NULL);    if (!hWnd)   {      return FALSE;   }    ShowWindow(hWnd, nCmdShow);   UpdateWindow(hWnd);    return TRUE;} LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam){    int wmId, wmEvent;    PAINTSTRUCT ps;    HDC hdc;    LPWSTR buffer = 0;    RECT rect;     switch (message)    {    case WM_CREATE:        GetWindowRect(hWnd, &rect);        SetWindowPos(hWnd, HWND_TOPMOST, rect.left, rect.top, rect.right, rect.bottom, SWP_SHOWWINDOW);        break;    case WM_CLOSE:        if (HookFlag==TRUE)            UninstallHook();        DestroyWindow(hWnd);    case WM_MOUSEHOOK:    {        wchar_t buffer[256];        wsprintfW(buffer, L"%p", wParam);        SetDlgItemText(hWnd, IDC_HANDLE, buffer);         GetClassName((HWND)wParam, buffer, 128);        SetDlgItemText(hWnd, IDC_CLASSNAME, buffer);         DWORD buffer2 = GetClassLong((HWND)wParam,GCL_WNDPROC);        wsprintfW(buffer, L"%p", buffer2);        SetDlgItemText(hWnd, IDC_WNDPROC, buffer);        break;    }    case WM_COMMAND:    {        wmId    = LOWORD(wParam);        wmEvent = HIWORD(wParam);        // Parse the menu selections:         if (wmEvent==BN_CLICKED)        {            if (wmId==IDC_HOOK)            {                if (HookFlag==FALSE)                {                    if (InstallHook(hWnd))                    {                        HookFlag = TRUE;                        SetDlgItemText(hWnd, IDC_HOOK, L"Un hook");                    }                }                else                {                     UninstallHook();                     SetDlgItemText(hWnd,IDC_HOOK,L"Hook");                     HookFlag = FALSE;                     SetDlgItemText(hWnd,IDC_CLASSNAME,NULL);                     SetDlgItemText(hWnd,IDC_HANDLE,NULL);                     SetDlgItemText(hWnd,IDC_WNDPROC,NULL);                }            }            else if (wmId==IDC_EXIT)            {                SendMessage(hWnd,WM_CLOSE,0,0);            }        }        switch (wmId)        {        case IDM_ABOUT:            DialogBox(hInst, MAKEINTRESOURCE(IDD_ABOUTBOX), hWnd, About);            break;        case IDM_EXIT:            DestroyWindow(hWnd);            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;}

Ai có thể giúp em với.

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[xuyenchi05]

Hi bạn,

Theo mình thì làm thế này

GetCursorPos(&point) để lấy tọa độ con trỏ chuột
WindowFromPoint(point); để lấy handle của window tại một tọa độ

Thân