回複：seems very easy

That's pretty cool. But still not what I want. In your solution, you have to open two windows and then drag and drop file and hit enter. Ideally, it would be much better if you could simply open windows explorer and click on your perl file to automatically open command prompt windows to run that perl file, which you can do without any problem. The problem is how to make that command prompt window stay with the result displayed!!! My new Dell did make that possible for about 5 seconds. Than I tried to make it stay longer and ruined it. And I don't know exactly how I ruined it!

It is actually not that easy...