Prevent Deleting a currently Opened file Using Qt.
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In Microsoft word, the user is not allowed to delete or rename a file if it is in used. I want to create a project that is similar to this. But how am I going to do that? I am new to QT. I don't know how to start. Can anyone help me with this?
I'm looking forward for your reply.
Thank you so much in advance. -
Hi and welcome to devnet,
AFAIK, that's the OS that forbids such operations on an opened file.
Or are you trying to do such things within your application ?
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Hi thank you so much for your reply.
Yes, I am trying to create that within my application.
I made a project that could save and edit a text file. Like a notepad. What I want is if that file is opened. I want a messagebox or something that will pop up when the user tries to delete/rename the certain file. -
How is the user supposed to delete the file ?
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Hmmmm.. Let's say for example you have a saved file called "sample.txt" in the documents. Then you open it using the application you created in QT. Then the user will try to delete that file in the documents. I want a message to pop up... something like "action cannot be completed because the file is open in another application." something like this.
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You need some kind of file lock, and pray that deleting application respects your lock.
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You need some kind of file lock, and pray that deleting application respects your lock.
Which on *nix is (almost) never the case.
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One alternative that comes to mind is to work on a "copy" of the file and next time you save it you can tell your user that the file is gone.
