Super difficult question! How to judge whether it is a U disk according to the drive letter?

cruzer

Note that you cannot use GetDriveType to judge, because GetDriveType is a fixed disk for some U disks !!!!!!!!!


Please give detailed code Thank you !!!!!!!!!!!!!!!!!!

dyluoyang

It cannot be judged based on the drive letter.

abomination

Unless the partition is fixed, C\D\E\F...is a hard disk partition, everything else is a USB drive letter, otherwise there is no way

coolman214

If your program can be started before inserting the U disk, receive the USB insertion message BDT_DEVICEARRIVAL = $8000; and then scan the disk for changes, should this be possible? (It does not rule out that when you plug in a USB device, you also have a hard disk access, then it will not work)
    I have seen the source code of a program similar to the device manager before, but I couldn't find it there. That procedure should be solvable.

cruzer

coolman214Your method won't work. If it has been inserted before running the program, you can't judge it. I heard that you can judge the bus type, but I don't know how to implement it. Does anyone know?????????? ??????

goylee

It can be obtained through SetupAPI with Volume query command~~

fenixss

TO: Use GetDriveType to judge your program!!
Cannot be judged by GetDriveType, because GetDriveType judges some U disks as fixed disks

memobbq

Is there something wrong with your brain? ? Ask questions like this! ! ! ? ? ? ? ?

Just like you said, plug in the USB flash drive, then open the program, let the program to see if the flash drive is a USB flash drive?? Then I will tell you: it is impossible for him to recognize it if he is killed!!! Come out such a program!!!

Should the program always monitor whether there is an incident? ? Because when the U disk is inserted, the system will receive specific events, so your program can also receive specific events. That is to say, only when the USB flash drive is inserted or removed, can it be judged whether there is a USB flash drive inserted.

The improvised method:
In addition, because GetDriveType judges certain U disks as fixed disks, you have to look at the problem from another angle. It is not that this function is not working, but other people’s U disks are not compatible. Let him die and change the U disk!!!

goylee

Plug in the U disk, then open the program, let the program to see if the disk is a USB removable disk, it must be feasible!!!
As for the distinction between USB flash drives and USB mobile hard drives, there is nothing you can do~

The specific code needs to be provided for a fee~~

dreamyeah

It should be possible. For example, the general tax data collection software was developed with DELPHI to realize whether there is a USB flash drive on the computer, but I don't know how to achieve it, sorry