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POsystem-wide hook not run outside main program
 

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  1. POsystem-wide hook not run outside main program
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    <p>I writing Hook Mouse system-wide (when mouse over any components in screen, Handle, classname, wndproc of it will display in my program).</p> <p>But system-wide hook in my program not run when move mouse outside main program</p> <p>I create DLL file successfully, but dont understand why it ONLY run as local hook (it run good in local my program - SCREEN AREA of my program).</p> <p>This is source of hookDLL.cpp (DLL file):</p> <pre><code>#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(&amp;pt); HANDLE handle = WindowFromPoint(pt); PostMessage(hWnd, WM_MOUSEHOOK, (WPARAM)handle, 0); return 0; } </code></pre> <p>And this is source of hook.cpp (main program):</p> <pre><code>#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 instance TCHAR szTitle[MAX_LOADSTRING]; // The title bar text TCHAR szWindowClass[MAX_LOADSTRING]; // the main window class name HWND 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(&amp;msg, NULL, 0, 0)) { if (!TranslateAccelerator(msg.hwnd, hAccelTable, &amp;msg)) { TranslateMessage(&amp;msg); DispatchMessage(&amp;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(&amp;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, &amp;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, &amp;ps); // TODO: Add any drawing code here... EndPaint(hWnd, &amp;ps); break; case WM_DESTROY: PostQuitMessage(0); break; default: return DefWindowProc(hWnd, message, wParam, lParam); } return 0; } </code></pre> <p>Anyone can help me.</p>
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    1. PO
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    1. UScristiano
    1. UScristiano
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      1. POsystem-wide hook not run outside main program
      1. USRaymond Chen
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    2. VO
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      1. POsystem-wide hook not run outside main program
      1. This table or related slice is empty.
      1. VTUpMod
    3. VO
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      1. POsystem-wide hook not run outside main program
      1. USBreeze
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    1. COPlease simplify your program. For example, I bet the About dialog is not essential. Next, debug the program. In particular, look closely at the value of hWnd in your hook procedure.
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      1. POsystem-wide hook not run outside main program
      1. USRaymond Chen
    2. COThank you, i just edited
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      1. POsystem-wide hook not run outside main program
      1. UScristiano
 

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