核心代码:

	发送端代码：							

								

	HWND hwnd = ::FindWindow(NULL,TEXT("接收端窗口名"));							

	if(hwnd == NULL)							

	{							

		MessageBox(0,TEXT("没找到窗口"),TEXT("ERROR"),MB_OK);						

	}							

	else							

	{							

		// 发送消息  						

		//SendMessage(hwnd,WM_USER+0x1,NULL, (LPARAM)100); 						

		PostMessage(hwnd,WM_USER+0x1, NULL, (LPARAM)100);						

	}							

								

								

	接收端代码：							

								

	switch(uMsg)							

	{							

	case WM_CLOSE:							

		{						

			EndDialog(hDlg,0);					

			break;					

		}						

	case WM_USER+0x1:							

		{						

			DWORD x = wParam;					

			DWORD y = lParam;					

								

			MessageBox(0,0,0,0);					

			break;					

		}						

	case WM_COMMAND:							

								

		switch (LOWORD (wParam))						

		{						

		case IDC_BUTTON_RECV:						

			{					

								

								

				return TRUE;				

			}					

		}						

		break ;						

	}							

								

								

很简单的通信方式!