mfc检测U盘

2016-08-03 04:11:43 254 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

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基于MFC的U盘检测与文件拷贝程序该程序实现功能如下：①实现U盘插拔事件的检测,界面上显示U盘盘符;②要求列出U盘所有的文件名在界面上显示;③下载指定文件到电脑本地磁盘指定路径。该程序实现步骤如下：①用MFC添加动态文本框以显示U盘状态及盘符【IDC_EDIT_DISKSTATE】-变量【m_editCtrDiskState】、添加动态文本框以显示文件名【IDC_EDIT_DISKFILE】-变量【m_... 阅读详情

LRESULT CUDlg::WindowProc(UINT message, WPARAM wParam, LPARAM lParam)

{

	// TODO: 在此添加专用代码和/或调用基类

	switch (message)

	{

		//WM_DEVICECHANGE，系统硬件改变发出的系统消息

	case WM_DEVICECHANGE:

	{

		PDEV_BROADCAST_HDR lpdb = (PDEV_BROADCAST_HDR)lParam;

		switch (wParam)

		{

		case WM_DEVICECHANGE:

			break;

		case DBT_DEVICEARRIVAL://DBT_DEVICEARRIVAL，设备检测结束，并且可以使用

		{

			if (lpdb->dbch_devicetype == DBT_DEVTYP_VOLUME)//逻辑卷

			{

				PDEV_BROADCAST_VOLUME lpdbv = (PDEV_BROADCAST_VOLUME)lpdb;

				switch (lpdbv->dbcv_flags)

				{

				case 0:                //U盘

				{

					CString decDriver;

					decDriver = FirstDriveFromMask(lpdbv->dbcv_unitmask);

					TRACE1("检测到U盘:[%s]插入!\n", decDriver.GetBuffer(0));

				}

				break;

				case DBTF_MEDIA:    //光盘

					TRACE1("检测到光盘:[%c]插入!\n", FirstDriveFromMask(lpdbv->dbcv_unitmask));

					break;

				}

			}

		}

		break;

		case DBT_DEVICEREMOVECOMPLETE://DBT_DEVICEREMOVECOMPLETE,设备卸载或者拔出

		{

			if (lpdb->dbch_devicetype == DBT_DEVTYP_VOLUME)//逻辑卷

			{

				PDEV_BROADCAST_VOLUME lpdbv = (PDEV_BROADCAST_VOLUME)lpdb;

				switch (lpdbv->dbcv_flags)

				{

				case 0:                //U盘

				{

					CString decDriver;

					decDriver = FirstDriveFromMask(lpdbv->dbcv_unitmask);

					TRACE1("检测到U盘:[%s]拔出!\n", decDriver.GetBuffer(0));

				}

				break;

				case DBTF_MEDIA:    //光盘



					break;

				}

			}

		}

		break;

		}

	}

	break;

	}

	return CDialogEx::WindowProc(message, wParam, lParam);

}