如何确定cdrom驱动器是可写的？ [英] How to determine a cdrom drive is writable?

问题描述

您好，伙计们

我使用GetDriveType函数来确定计算机中的CD-ROM驱动器，但我想检测可写的，使用Windows API，我搜索了DeviceIoControl函数，但文档非常全面，我无法得到我的答案。任何人都可以帮助我吗？

提前致谢

mr.abzadeh



编辑：我发现了DEVICE_MEDIA_INFO结构包含一个

 DWORD MediaCharacteristics; 

成员，它清楚地指定媒体是否可写，我找不到哪个函数返回它。



编辑：我得到了CD-ROM和CD-RW的DEVICE_MEDIA_INFO结构并检查了MediaCharacteristics成员，显示没有区别，因此DEVICE_MEDIA_INFO可能不包含cd-rom驱动器的可写特性。

解决方案

可能您可以使用 IMAPI ，即 IDiscRecorder :: QueryMediaType [ ^ ]方法。另请参见使用IMAPI进行CD刻录和设备发现 [ ^ ]

我刚刚在我的网站上对此进行了测试系统，它显示安装可写CD / DVD时驱动器的正确特性。请注意 GET_MEDIA_TYPES [ ^ ]结构包含数组 aa363241（v = vs.85）.aspx> DEVICE_MEDIA_INFO [ ^ ]条目，因此您需要迭代列表以获取正确的条目。

Hello, guys
I use GetDriveType function to determine CD-ROM drives in a computer, but I want to detect the writable ones, using windows API, I searched DeviceIoControl function but the documentation was very comprehensive and I was unable to get my answer. Can anyone help me?
Thanks in advance
mr.abzadeh

EDIT: I found that the DEVICE_MEDIA_INFO structure contains a

DWORD  MediaCharacteristics;

member that clearly specifies if the media is Writable, by I can not find which function returns it.

EDIT: I got the DEVICE_MEDIA_INFO structure for both CD-ROM and CD-RW and examined the MediaCharacteristics member, showing no difference, so DEVICE_MEDIA_INFO may not contain writable characteristic of a cd-rom drive.

解决方案

Possibly you may use IMAPI, namely IDiscRecorder::QueryMediaType[^] method. See also CD Burning and Device Discovery with IMAPI[^]

I just tested this on my system and it shows the correct characteristics for the drive when a Writable CD/DVD is mounted. Note that the GET_MEDIA_TYPES[^] structure contains an array of DEVICE_MEDIA_INFO[^] entries, so you need to iterate the list for the correct entry.

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