![]() ![]() This tutorial requires Qt Creator or Qt Designer to be installed - you can download it free from the Qt website. The Python API to hook up your application logic later. The principles, layouts and widgets are identical, so you can applyĮverything you've already learnt. In this tutorial we'll cover the basics of creating UIs with Qt Designer. ![]() Using Qt Designer you can define your UIs visually and then simply hook up the application logic later. The good news is that Qt comes with a graphical editor - Qt Designer - which contains a drag-and-drop UI editor. This works great in many cases, but as your applications get larger or interfaces more complicated, it can get a bit cumbersome to define all widgets programmatically. So I'm suspicious of the design view and the way in handles images.So far we have been creating apps using Python code. Just entering design view executed the project multiple times at one point, popping up several windows for no reason. The design view did strange things with images until I removed and reinstated them from assets. ![]() Moving a project between Qt Creator/Qt versions also resulted in some very strange behaviour of the design view. "/project/Somefile.img" is of course not the name of the file I'm actually using. "qrc:/home/project/somefile.img" fails resulting in (QML Image: Cannot open: qrc:/home/project/somefile.img). "home/project/somefile.img" fails resulting in (QML Image: Cannot open: home/project/somefile.img). In ver 6.0.1 I can't get anything but a full path to work "file: /home/project/somefile.img" works when I run the routine. In that it is inconsistent between versions of Qt Creator. I'm sure that it is probably mainly my fault for not reading reams of documentation but again that also detracts from getting the job in hand done.Ĭurrently I'm having difficulties getting to the bottom of inconsistent file access behaviour for images in QLM. Ive discovered the variations in functionality in QT quick versions has some pretty hard to understand effects on the behaviour of my code. Many examples fall over just because they are trying to include the wrong version. Yes they are accessible but QT's version control seems to leave a lot to be desired particularly when it comes to QT quick. Making it particularly difficult for new users, often resulting in many hours of wasted time.Īs for Examples. Qt is such a good package I find it hard to understand how things like this happen. I didn't even realise Qt Designer is a plug-in! What is the Logic behind this? There is a perfectly good Tools menu item with an "Options" choice at the bottom. This doesn't, as you would think, open any sort of help but instead opens a dialogue allowing one to enable, disable or install plug-ins. To enable Qt designer you need go into Help then About Plugins. It turns out the reason that I couldn't get into QT designer is it was disabled by default!! Why is it disabled by default? I couldn't find anything in documentation or online about this. Particularly when logic doesn't seem to have been applied. But the learning curve to use the IDE can be greater than the differences in language modules. Modern IDE's make life so much easier in many ways. I know I'm new to QT but I have been a programmer for the best part of 40 years. More worryingly the latest version 6.0.1 seems to have a bug stopping access to the design view with the same projects that work fine on the 5.12.12 version. It would seem that my distro version has issues with the way it is installed because the offline install of the same version from Qt works. This version works! Both examples and design view are working. Once again I uninstalled and following another link found offline installer for Version 5.12.12. In desperation I eventually uninstalled and used the Qt online installer to install Qt and Qt Creator ver 6.0.1 The examples showed up and my previous projects worked but no matter what I tried I couldn't get it to go into design view. No matter what I tried following every online suggestion I couldn't get the examples to show up on the welcome page. Using the synaptic package manager I installed the available Qt 5.12.12 version along with Qt creator 5.0.3. I'm using PClinuxOS latest 64bit ver fully updated. ![]()
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