怎样判断usb外设是否连接(100分)

怎样判断usb外设是否连接

不太容易，如果是简单的存储卡还可以 ，通过GetDriveType 获取可移动设备<br>要是usb鼠标，光驱 ，软驱 ，摄像头 或是特殊的外挂设备！！！<br><br>result = GetDriveType(drive);<br>&nbsp; &nbsp; <br>&nbsp; &nbsp; if (result == DRIVE_REMOVABLE)<br>&nbsp; &nbsp; &nbsp; &nbsp; cout &lt;&lt; "可移动设备" ;<br>&nbsp; &nbsp; else if (result == DRIVE_FIXED)<br>&nbsp; &nbsp; &nbsp; &nbsp; cout &lt;&lt; "硬盘";<br>&nbsp; &nbsp; else if (result == DRIVE_REMOTE)<br>&nbsp; &nbsp; &nbsp; &nbsp; cout &lt;&lt; "网络驱动器" ;<br>&nbsp; &nbsp; else if (result == DRIVE_CDROM )<br>&nbsp; &nbsp; &nbsp; &nbsp; cout &lt;&lt; " 光驱";<br>&nbsp; &nbsp; else if (result == DRIVE_RAMDISK)<br>&nbsp; &nbsp; &nbsp; &nbsp; cout &lt;&lt; "Ram Disk";<br>&nbsp; &nbsp; else if (result == DRIVE_UNKNOWN)<br>&nbsp; &nbsp; &nbsp; &nbsp; cout &lt;&lt; "未知的设备";