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cwindowswinapisd-cardada

Detecting if a sd card reader has a card inserted

Does anyone know how to use the Windows Api in C to detect whether an SD Card reader has a card inserted or not?

Platform: windows xp/visa/7/8.

I've had a google around and a look at the Windows API Doc (which i'm unfamiliar with so probably missed a lot) and have been unable to find an answer.

I've had a look at this post How can I detect when an SD card is plugged in? - which was close but didn't give me what i needed as i don't want to detect a change in state, rather what state it is in at the time of query.

(If by blind chance someone has an Ada implementation of this, that would be amazing, otherwise i plan to just link with C)

Thank you for any help

Matt

Solution

  • I fixed this using windows api call GetVolumeInformation which returns 0 if the drive is not ready. The advantage of using GetVolumeInformation over GetFileAttributes was that GetVolumeInformation is silent, where as GetFileAttributes will cause windows to popup a box saying the drive is empty if it can't find the file. There may be a cleaner way of doing this - but this is working for me now :)

    Thank you for the help!