How to customize item editing with QTreeView / QStandardItemModel?
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I use a commercial program that has a list view and uses single click to open editor. It works perfectly.
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As for QInputEvent::timestamp(): it is unclear what resolution it has, or how to calculate the difference between stamps in ms. Any hints?
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Take a look at the sources (I don't have them available) or just try it out by inserting a "qDebug("%lli", event->timestamp());" into e.g. the mousePressEvent and then clicking a button twice within a rough estimate of e.g. two seconds. I think it's going to be microseconds, maybe milliseconds - should be easy to figure out.
EDIT: I didn't find any hints in the sources, so either figure it out as described or use your own timer.
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Thanks for checking.
I'm almost done with my editing questions. One last thing: I want to prevent the editor from committing changes if it was closed in any other way than with Enter button press. Right now, it seems, only Esc will cancel the commit, any other way to close the editor will result in the data being commited.
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But how do I know if the editor was closed with Enter, or in another way?
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It shouldn't matter. Maybe take a look at the closeEditor()-function - but if you really want to know about specific button presses, you might have to subclass QLineEdit (or whatever comes close to what you need) and write an editor on your own.
Also: Read a bit in the documentation. As far as I know, the setModelData-function is always (!) called when data has to be committed (so pressing Esc wouldn't trigger it). In there the data is written to the model.
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My question was: I want to prevent the editor from committing changes if it was closed in any other way than with Enter button press.
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Ok, then. Have a detailed look at the description of the "QStyledItemDelegate":http://qt-project.org/doc/qt-5/qstyleditemdelegate.html#details and then try to make use of the "Star Delegate Example":http://qt-project.org/doc/qt-5/qtwidgets-itemviews-stardelegate-example.html . As far as I know the only way to actively choose how the editor can be closed is by creating your own editor (it sends out a signal when things have to be commited, so you decide when that signal actually is sent). It is not too difficult, especially since you probably only need basic QLineEdit-functionality.
There is also "QAbstractItemDelegate::editorEvent":http://qt-project.org/doc/qt-5/qabstractitemdelegate.html#editorEvent , but it supposedly only is called when the editing starts, not when it finishes. In that case it wouldn't be of much use.
Good luck. :)
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Thanks for the explanation!