milivault.blogg.se

1. Cannot select any modules in qt gui application wizard how to#
2. Cannot select any modules in qt gui application wizard install#
3. Cannot select any modules in qt gui application wizard code#
4. Cannot select any modules in qt gui application wizard professional#

Cannot select any modules in qt gui application wizard install#

You can either fetch the Qt 5 sources from Qt Project or install them as part of Qt 5. You can find the final Notepad source files in the qtdoc repository in the tutorials/notepad directory. The application is a small text editor which allows you to create a text file, save it, print it, or reopen and edit it again. Run it! You'll see a thin grey bar at the top of the window.In this topic, we teach basic Qt knowledge by implementing a simple Notepad application using C++ and the Qt Widgets module. Right click and click the name to toggle it off. How can I get my toolbar back!? Unfortunately once you remove a toolbar there is now no place to right click to re-add it. So as a general rule you want to either keep one toolbar un-removeable, or provide an alternative interface in the menus to turn toolbars on and off. We should make the toolbar a bit more interesting. We could just add a QButton widget, but there is a better approach in Qt that gets you some additional features - and that is via QAction. QAction is a class that provides a way to describe abstract user interfaces. What this means in English, is that you can define multiple interface elements within a single object, unified by the effect that interacting with that element has. Without QAction you would have to define this in multiple places.įor example, it is common to have functions that are represented in the toolbar but also the menu - think of something like Edit->Cut which is present both in the Edit menu but also on the toolbar as a pair of scissors, and also through the keyboard shortcut Ctrl-X ( Cmd-X on Mac). But with QAction you can define a single QAction, defining the triggered action, and then add this action to both the menu and the toolbar.

Cannot select any modules in qt gui application wizard code#

In the code below you can see this first QAction added.īutton_action = QAction("Your button", self)īutton_tStatusTip("This is your button")īutton_(self.onMyToolBarButtonClick) Each QAction has names, status messages, icons and signals that you can connect to (and much more).

#Cannot select any modules in qt gui application wizard code To start with we create the function that will accept the signal from the QAction so we can see if it is working. When creating the instance we can pass a label for the action and/or an icon.

You must also pass in any QObject to act as the parent for the action - here we're passing self as a reference to our main window. Strangely for QAction the parent element is passed in as the final parameter. Next, we can opt to set a status tip - this text will be displayed on the status bar once we have one. This signal will fire whenever the QAction is triggered (or activated). Run it! You should see your button with the label that you have defined. Click on it and the our custom function will emit "click" and the status of the button. Why is the signal always false? The signal passed indicates whether the button is checked, and since our button is not checkable - just clickable - it is always false.

Cannot select any modules in qt gui application wizard how to#

We'll show how to make it checkable shortly. #Cannot select any modules in qt gui application wizard how to Since we don't need to change the statusBar settings we can also just pass it in as we create it, in a single line: We create a status bar object by calling QStatusBar to get a new status bar object and then passing this into. Run it! Click on the button to see it toggle from checked to unchecked state. Note that custom slot function we create now alternates outputting True and False.

Toggled signal, which only emits a signal when the button is toggled. But the effect is identical so it is mostly pointless. Things look pretty shabby right now - so let's add an icon to our button. For this I recommend you download the fugue icon set by designer Yusuke Kamiyamane.

Cannot select any modules in qt gui application wizard professional#

It's a great set of beautiful 16x16 icons that can give your apps a nice professional look. #Cannot select any modules in qt gui application wizard professional