这个程序前阵子帮一个朋友实现的，之前从未用消息队列做过类似的事情，美国服务器，做完后感觉其在线程同步，网站空间，通信发面很好用，难怪COM也用这套机制。
程序稍微修改便能用作一般性的处理，香港服务器租用，目前实现的功能类似于监控Windows USB设备的插拔操作。
可以直接注释掉CString的使用后使用 cl /EHsc /W4 /Zi 编译，或粘贴到任意的VS中做编译。
#include <Windows.h> #include <tchar.h> #include <Dbt.h> #include <setupapi.h> #include <iostream> #include <atlstr.h> // CString using namespace std; #pragma comment (lib, "Kernel32.lib") #pragma comment (lib, "User32.lib") #define THRD_MESSAGE_EXIT WM_USER + 1 const _TCHAR CLASS_NAME[] = _T("Sample Window Class"); HWND hWnd; static const GUID GUID_DEVINTERFACE_LIST[] = { // GUID_DEVINTERFACE_USB_DEVICE { 0xA5DCBF10, 0x6530, 0x11D2, { 0x90, 0x1F, 0x00, 0xC0, 0x4F, 0xB9, 0x51, 0xED } }, // GUID_DEVINTERFACE_DISK { 0x53f56307, 0xb6bf, 0x11d0, { 0x94, 0xf2, 0x00, 0xa0, 0xc9, 0x1e, 0xfb, 0x8b } }, // GUID_DEVINTERFACE_HID, { 0x4D1E55B2, 0xF16F, 0x11CF, { 0x88, 0xCB, 0x00, 0x11, 0x11, 0x00, 0x00, 0x30 } }, // GUID_NDIS_LAN_CLASS { 0xad498944, 0x762f, 0x11d0, { 0x8d, 0xcb, 0x00, 0xc0, 0x4f, 0xc3, 0x35, 0x8c } } //// GUID_DEVINTERFACE_COMPORT //{ 0x86e0d1e0, 0x8089, 0x11d0, { 0x9c, 0xe4, 0x08, 0x00, 0x3e, 0x30, 0x1f, 0x73 } }, //// GUID_DEVINTERFACE_SERENUM_BUS_ENUMERATOR //{ 0x4D36E978, 0xE325, 0x11CE, { 0xBF, 0xC1, 0x08, 0x00, 0x2B, 0xE1, 0x03, 0x18 } }, //// GUID_DEVINTERFACE_PARALLEL //{ 0x97F76EF0, 0xF883, 0x11D0, { 0xAF, 0x1F, 0x00, 0x00, 0xF8, 0x00, 0x84, 0x5C } }, //// GUID_DEVINTERFACE_PARCLASS //{ 0x811FC6A5, 0xF728, 0x11D0, { 0xA5, 0x37, 0x00, 0x00, 0xF8, 0x75, 0x3E, 0xD1 } } }; void UpdateDevice(PDEV_BROADCAST_DEVICEINTERFACE pDevInf, WPARAM wParam) { CString szDevId = pDevInf->dbcc_name + 4; int idx = szDevId.ReverseFind(_T('#')); szDevId.Truncate(idx); szDevId.Replace(_T('#'), _T('\\')); szDevId.MakeUpper(); CString szClass; idx = szDevId.Find(_T('\\')); szClass = szDevId.Left(idx); CString szTmp; if ( DBT_DEVICEARRIVAL == wParam ) \ szTmp.Format(_T("Adding %s\r\n"), szDevId.GetBuffer()); else szTmp.Format(_T("Removing %s\r\n"), szDevId.GetBuffer()); _tprintf(szTmp); } LRESULT DeviceChange(UINT message, WPARAM wParam, LPARAM lParam) { if ( DBT_DEVICEARRIVAL == wParam || DBT_DEVICEREMOVECOMPLETE == wParam ) { PDEV_BROADCAST_HDR pHdr = (PDEV_BROADCAST_HDR)lParam; PDEV_BROADCAST_DEVICEINTERFACE pDevInf; PDEV_BROADCAST_HANDLE pDevHnd; PDEV_BROADCAST_OEM pDevOem; PDEV_BROADCAST_PORT pDevPort; PDEV_BROADCAST_VOLUME pDevVolume; switch( pHdr->dbch_devicetype ) { case DBT_DEVTYP_DEVICEINTERFACE: pDevInf = (PDEV_BROADCAST_DEVICEINTERFACE)pHdr; UpdateDevice(pDevInf, wParam); break; case DBT_DEVTYP_HANDLE: pDevHnd = (PDEV_BROADCAST_HANDLE)pHdr; break; case DBT_DEVTYP_OEM: pDevOem = (PDEV_BROADCAST_OEM)pHdr; break; case DBT_DEVTYP_PORT: pDevPort = (PDEV_BROADCAST_PORT)pHdr; break; case DBT_DEVTYP_VOLUME: pDevVolume = (PDEV_BROADCAST_VOLUME)pHdr; break; } } return 0; } LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam) { switch(message) { case WM_PAINT: break; case WM_SIZE: break; case WM_DEVICECHANGE: return DeviceChange(message, wParam, lParam); } return DefWindowProc(hWnd, message, wParam, lParam); } ATOM MyRegisterClass() { WNDCLASS wc = {0}; wc.lpfnWndProc = WndProc; wc.hInstance = GetModuleHandle(NULL); wc.lpszClassName = CLASS_NAME; return RegisterClass(&wc); } bool CreateMessageOnlyWindow() { hWnd = CreateWindowEx(0, CLASS_NAME, _T(""), WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, NULL, // Parent window NULL, // Menu GetModuleHandle(NULL), // Instance handle NULL // Additional application data ); return hWnd != NULL; } void RegisterDeviceNotify() { HDEVNOTIFY hDevNotify; for (int i = 0; i < sizeof(GUID_DEVINTERFACE_LIST) / sizeof(GUID); i++) { DEV_BROADCAST_DEVICEINTERFACE NotificationFilter; ZeroMemory( &NotificationFilter, sizeof(NotificationFilter) ); NotificationFilter.dbcc_size = sizeof(DEV_BROADCAST_DEVICEINTERFACE); NotificationFilter.dbcc_devicetype = DBT_DEVTYP_DEVICEINTERFACE; NotificationFilter.dbcc_classguid = GUID_DEVINTERFACE_LIST[i]; hDevNotify = RegisterDeviceNotification(hWnd, &NotificationFilter, DEVICE_NOTIFY_WINDOW_HANDLE); } } DWORD WINAPI ThrdFunc( LPVOID lpParam ) { if (0 == MyRegisterClass()) return -1; if (!CreateMessageOnlyWindow()) return -1; RegisterDeviceNotify(); MSG msg; while (GetMessage(&msg, NULL, 0, 0)) { if (msg.message == THRD_MESSAGE_EXIT) { cout << "worker receive the exiting Message..." << endl; return 0; } TranslateMessage(&msg); DispatchMessage(&msg); } return 0; } int main(int argc, char** argv) { DWORD iThread; HANDLE hThread = CreateThread( NULL, 0, ThrdFunc, NULL, 0, &iThread); if (hThread == NULL) { cout << "error" << endl; return -1; } char chQtNum; do { cout << "enter Q/q for quit: " << endl; cin >> chQtNum; } while (chQtNum != 'Q' && chQtNum != 'q'); PostThreadMessage(iThread, THRD_MESSAGE_EXIT, 0, 0); WaitForSingleObject(hThread, INFINITE); CloseHandle(hThread); return 0; }
:-)