[Qt Creator] 2.6.0 Drag & Drop Issues / UI Creation / Widgets / Windows 7

[werispaul]

Hi,

I've a strange bug, since some days ... I'm actually no more able to design UI's properly by using Qt Creator. The reason is that most of the Drag & Drop functionalities in Qt Creator / Designer fail. For example, when I start with an empty project using a MainWindow, I'm able to Drag & Drop the first element onto the MainWindow surface, and even a second beside. But every time I try to populate on of these, e.g. a Group Box with other Elements, e.g. Buttons, the Drag & Drop operation fails.

!http://www.abload.de/img/qtcreator_bugf8ifb.png(Qt Creator Bug)!

System:

• Windows 7, VS 2010 as Compiler, Qt Creator 2.6.0, Qt 4.8.3 libraries MSVC2010 (both standalone packages)

Steps I've tried so far:

• Uninstall and Re-Install Qt Creator & Qt libraries

• Deleted Qt Creator Settings (User/AppData)

• Tried Windows 7 Drag & Drop bug solution ( http://answers.microsoft.com/en-us/windows/forum/windows_7-performance/drag-and-drop-not-working-in-windows-7/f6dcfa11-8c51-e011-8dfc-68b599b31bf5 )

• Used Dependancy Walker to ensure that the right dll's are loaded by QtCreator, checked system paths for conflicting installations like miktex ...

Anyone new ideas? I would appreciate any help. Thanks in advance!

Sascha

[tobias.hunger]

Does this also effect the stand-alone Qt designer? Designer comes with the Qt you install (Creator uses its own internal Qt version).

[werispaul]

Good point. When I start the designer.exe, the process is started, and shows up in the task manager, but the UI does not show up. When looking at dependancies, it loads the corresponding Qt dlls from its bin folder. Assistant, linguist and co. are showing up fine ... :/

[quote author="Tobias Hunger" date="1354194590"]Does this also effect the stand-alone Qt designer? Designer comes with the Qt you install (Creator uses its own internal Qt version).[/quote]

[tobias.hunger]

That sounds really screwed up.

Do you have any designer plugins lying around somewhere which might be faulty/outdated/incompatible? You could try running designer, watching it with processmonitor or some similar tool to see what it loads/does.