c++, windows 7: recognize usb thumbdrive was connected and recognize usb identifier?

Question

I'd like to write a software that automatically copies some files onto a usb thumbdrive when it gets connected to the usb port. for this i would like to know:

1. how can I write a c++ application that gets notified when a usb thumbdrive gets connected?

2. is there any way to identify the usb thumbdrive, so that i can keep track off whether or not a new usb thumbdrive was inserted already?

Answer 1

我认为您可以使用WM_DEVICECHANGE窗口消息在设备插入或从系统中删除时收到通知，这里有一个链接供进一步阅读http://msdn.microsoft.com/en-us/library/windows/desktop/ aa363480％28V = vs.85％29.aspx

Answer 2

Krister's answer covers the basics. What he doesn't metion is how to do (2), idenifying it. You're looking for the DBT_DEVTYP_DEVICEINTERFACE arrival event. This event contains a dbcc_name , which is identifies the exact device. (Provided that the device adheres to the USB specification and has a unique serial number; don't expect cheap Chinese devices to.)