[virt-manager] copy file to vm

[bikuan zhang <haorenakuan@xxxxxxxxx>]

I always use virt-manager to manage my virtual machines,but when I try to copy file from host to the virtual machine, I find it can't use mouse to drag the file to the virtual machine. It's very inconvenient.
I would like to know if it is because I didn't set it up correctly, or because virt-manager doesn't yet support this feature.
Expecting a reply. Thanks.