控制台程序进程间WM_COPYDATA通信

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进程间通信最简单的方式是用WM_COPYDATA，但对于控制台程序，无法直接接收消息。

一种解决方法是：生成一个隐藏窗口来接收消息

<span style="font-size:14px;">unsigned int __stdcall rcvMessage(PVOID pM){//生成一个隐藏窗口接收消息HINSTANCE hInstance = GetModuleHandle(NULL);MSG m_msg;WNDCLASSEX wc = {sizeof(WNDCLASSEX), CS_DBLCLKS, WndProc, 0, 0, hInstance,LoadIcon(0, IDI_APPLICATION), LoadCursor(0, IDC_ARROW), HBRUSH(COLOR_WINDOW+1), 0, winName, LoadIcon(0, IDI_APPLICATION)};if(!RegisterClassEx(&wc))return 1;//WS_EX_NOACTIVATEHWND hWnd = CreateWindowEx(0, winName, winName, WS_OVERLAPPEDWINDOW, 0,0,10,10,NULL,NULL,hInstance,NULL);if(!hWnd)return 1;GetErrorManager().PrintfLog("message", ERRORMANAGER_LOG|ERRORMANAGER_TRACE|ERRORMANAGER_CONSOLE, "message window build");ShowWindow(hWnd, SW_SHOW);while(!isStopped && GetMessage(&m_msg, 0, 0, 0)){//TranslateMessage(&m_msg);DispatchMessage(&m_msg);}return 0;}LRESULT WINAPI WndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam){//处理消息switch(uMsg){case WM_DESTROY:PostQuitMessage(0);return 0L;case WM_COPYDATA:{//接收数据GetErrorManager().PrintfLog("WndProc", ERRORMANAGER_LOG|ERRORMANAGER_TRACE|ERRORMANAGER_CONSOLE, "received a notify!");COPYDATASTRUCT* pCopyData = (COPYDATASTRUCT*)lParam;WCHAR buffer[100];memset(buffer, 0, sizeof(buffer));wsprintf(buffer, (WCHAR*)pCopyData->lpData);int flag = pCopyData->dwData;//创建线程处理EnterCriticalSection(&g_cs);if(index_del < numDelThread){hFunc[index_del] = (HANDLE)_beginthreadex(NULL, 0, fHandle, NULL, 0, NULL);index_del += 1;}LeaveCriticalSection(&g_cs);}default:return DefWindowProc(hWnd, uMsg, wParam, lParam);}}</span>

发送进程首先FindWindow，再SendMessage就好了

参考资料

[1] 进程通信之一使用WM_COPYDATA C++及C#实现

[2] windows进程通信 -- WM_COPYDATA消息

[3] 进程间通信 --windows篇

[4] windows进程间通信

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