Help me please.
When I use the program for a while , all shortcut will stop working.
I don't know why. I have to reopen the program every time it happens.

OS : Win 7 64 bit

Welcome to the forum!

Is it the same shortcuts every time, that stop working? Or is it random? About how many might stop working? After how long of working? When a shortcut stops working, can you still use the corresponding button or menu item in the gui?

Which Inkscape version? If older version, try current stable 0.48.2.

I've had an issue where one button will stop working, and restarting Inkscape is the only way to make it work again. It could be any button, but it tends to be one that I've been using a lot. It's kind of like it just gets tired, lol! I haven't had any issues with key shortcuts not working, but I don't use them very much. (I'm also on Win7, 64-bit)

I'm using stable version.
All shorcut will stop working until I reopen the program.
The button and the menu are still usable.

I don't know what the problem might be. Has this been happening ever since you first installed Inkscape? Or did it maybe start after you installed something else?

There are several bug reports where certain shortcuts don't work properly when a non-qwerty keyboard is in use (e.g. French, Russian, etc.). But in those cases, it's only a few specific keys, and it's not that they don't work so much as they just conflict with other shortcuts. Are you using a standard qwerty keyboard, or maybe some alternative style?

There have also been a couple of reports where shortcuts don't work properly when Comodo products are also installed. If you use any Comodo product, let us know, so we can add your report to the others. (Or at least investigate whether Comodo is the cause.)

In your case, where they all work, and then they don't, I did not see any similar reports. Although I'm certainly not intimately familiar with all the bugs. The only thing similar that I know about is my experience where a button will stop working.

I'm sorry, I wish i could be more helpful. Maybe someone else has a clue?