Bug in Qt 5.12 drag n'drop ?

aha_1980

I tried to run your app but I won't let something run as root on my system.

probably the elevated rights are part of the problem?

Christian Ehrlicher

@aha_1980 said in Bug in Qt 5.12 drag n'drop ?:

probably the elevated rights are part of the problem?

Don't think so - it's using a database and the app which creates the schema etc. wants admin rights. After this it looks like the normal application can run without admin rights but did not came that far.

skylendar

@aha_1980

No, only skydmin needs admin right in order to install the db. skylendar runs as a normal user.

skylendar

@aha_1980

If you really are scared to run skydmin as root, I can tell you how to install the db as the postgres non-root user.

aha_1980

@skylendar Thanks, but I don't think I'll debug your program ;)

I have too much of my own problems

skylendar

@aha_1980

I don't ask you to debug my app, just run it.

skylendar

@aha_1980

In addition, I don't want anything. I just signal a possible bug. That's all.

aha_1980

@skylendar thats why we need a simple program, trimmed down to the actual problem.

Otherwise its hard to track down where the bug is. Until now it is not even proven that Qt is guilty.

skylendar

@aha_1980

This is not a matter of guilt or not. We are not in an american thriller.
And besides, how do you explain that my app works fine with qt5.11 and below, but not with qt5.12 ?

skylendar

@aha_1980

And you forget something: Qt is actually a commercial program, and most of you, if not all, are paid for debugging it. Why should I work for you for free ?

mrjj

@skylendar

Qt is actually a commercial program, and most of you, if not all, are paid for debugging it

Actually this is a user forums and no one here is paid anything to help :)
We are not employees, but ordinary users of Qt.

Anyway, i tried some of old drag drop sample with Qt 5.12 and
they seems to work. At least on windows.

J.Hilk

@skylendar said in Bug in Qt 5.12 drag n'drop ?:

@aha_1980

And you forget something: Qt is actually a commercial program, and most of you, if not all, are paid for debugging it. Why should I work for you for free ?

If you happen to own a commercial license you should contact the customer support they may be able to help you more directly.

However they also will ask for a minimal compileable project, if your current project is considerably too large.
Alternatively there is also the option of paid consulting either from the QtCompany directly or other companies, like for example KDAB

skylendar

@J.Hilk

Who has a linux dnd program which can be tested ?

mrjj

@skylendar
Hi
What about test with the sample that comes with Qt ?
http://doc.qt.io/qt-5/dnd.html#examples
There are often directly available in Creator.

skylendar

@mrjj

Found the puzzle in the examples. It works, but in my case the draggable widget is placed in a QTreeWidget, not just an ordinary QWidget.

mrjj

Hi
well it its almost the same unless you used
QStandardItemModel::dropMimeData()
or something like that.

skylendar

@mrjj

I can drag from my QTreeWidget, but I can't drop anymore my icon onto my QWidget target, whereas it worked in the previous version of qt (5.11).

Everything seems ok, but the dropEvent() method of my QWidget isn't activated (setAcceptDrop() is set to true, of course)

mrjj

@skylendar
Check the
http://doc.qt.io/qt-5/qtwidgets-draganddrop-puzzle-example.html
as it drops from ListWidget to Widget.

skylendar

@mrjj

But I already did that... The codes are very similar, but in my case it doesn't work anymore

Christian Ehrlicher

@skylendar said in Bug in Qt 5.12 drag n'drop ?:

The codes are very similar

So you should modify one of them until you hit or fix the problem...