Save-on-exit prompt option

[Joe-Hu-Chat]

Requested feature

If the tab content is not saved, there will always be a prompt to save it when closing that tab. In some cases, works have been copied to clipboard and pasted to other files, for a word file, so there is no need to save that image. I use this great program a lot and clicking the discard button every time makes feel that why don't we have an option to disable this save-on-exit prompt mechanism. So I added this option and recompiled the source code myself.
Just wonder it's only me needing this feature? If other people need this feature I can upload my change and do some fixes if needed.

Possible drawbacks

An extra option will exist on the preference menu.

Possible alternatives

Just click the discard button every time?

Use case

I would disable this save-on-exit option when most of my use cases are not saving images in Drawing. In other cases, enable it.

[maoschanz]

does this bother you because you open many tabs (thus having the dialog many times)?

[Joe-Hu-Chat]

Yes, I use drawing to edit captures when making notes. What I need in this case is copy them to clipboard, rarely I will need to save the pictures.

[maoschanz]

if there was a single dialog, listing all your unsaved files, and you could click a "discard all" option, would it meet your need?

[Joe-Hu-Chat]

This could relieve me of clicking discard for every unsaved tab by just one click, but I prefer getting rid of the prompt as I don't need it in my use case now and if I changed my habit I could bring it back in preferences setting.

To clarify, I was not requesting to add this feature, I had already implemented a switch in preferences settings and it worked, then I wanted to see whether this was needed for other people. I just migrated from Windows to Ubuntu a couple months ago and I needed a tool like MS paint and I found drawing. Thank you a lot for making this software! I'm not experienced in making this kind of software, so if this feature is not appropriate, please feel free to close this issue.