I have a class myTreeView which is a subclass of QTreeView, which I am using in other widget and doing layout manually. now I want to include myTreeView in the new widget using designer so that I can avoid layout code. any suggestions/reference, how to do this ?
Place a QTreeView into your layout in Qt Designer. Right click the QTreeView, click Promote to... add a New Promoted Class definition using the form at the bottom of the dialog.
i.e. specify the base class of your derived class as QTreeView, give the widget a name, and specify where Qt Design can find the header file for your derived class.
That should allow you, at a minimum, to place your widget on the form as you lay it out. It will most likely show up as a grey empty box (much like a QWidget) on the layout however when you compile and build a project using your .ui file your widget will appear.
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I have created custom dialog class that inherits from QDialog. I would like to use it in a Qt Designer.
However there is a problem, as I do not know how to add it to the templates, that I could pick, when I select File/new.
I also tried to start with QDialog and then promote it to my custom class, however context menu on the form does not give me option to promote or change type of the form.
Is there a solution to this problem which does not include manually tweaking generated .ui file ?
I am trying to promote the top level QWidget into a derived MyWidget class using the "promote to" menu in Qt Designer.
For that, i have defined the promotion with the "promoted widgets.." menu.
I have also add a child QWidget (in violet) to the top level QWidget and i was able to promote into it into MyWidget using the "promote to" option, that appear after a right click in the object inspector. (as shown in the picture)
But for the top level QWidget, the right click don't give access to the "promote to" menu and i have the same problem with a QFrame.
Is it possible to do that with Qt Designer ?
Thank you.
No, you can't promote top Widget in Designer. But you can do it manually. Simply open ui file in text editor and make necessary changes to the top level widget. Which changes you will need you can see in your child widget defenition. Just copypaste needed fields and values.
I got a external library, which includes a derived class from QGLWidget, very similar to that one here. In that library I have a class:
class PictureGLWidget : public QGLWidget { //.. }
This extends Qt's native QGLWidget and personalizes it. But it was not written by me, I just got it, via a *.dll. So then, I bind that Widget manually in my code to a layout like:
QGridLayout* layout = new QGridLayout;
layout->addWidget(myPictureGLWidget, 0, 1);
ui->verticalLayout_5->addLayout(layout);
since I designed my MainWindowWidget with the integrated QtDesigner, which is by the way very comfortable, I would like to handle my myPictureGLWidget also in the QtDesigner, since I am currently redesigning the MainWindow.
Is there a way doing that? Thnx in advance!
Qt Designer supports any foreign widget class without needing to provide plugins for that. You only have to accept that the widget's properties and appearance won't be available within Designer.
Insert a dummy QWidget into the layout.
Right click on the widget, select "Promote to...".
Add PictureGLWidget as a new class promoted from QWidget. Specify appropriate header files etc.
Promote your widget to PictureGLWidget.
When this is done, the code generated by uic will instantiate a PictureGLWidget where you need it, instead of a dummy QWidget.
If you want to use the PictureGLWidget in the designer instead of a dummy widget, you can write a designer plugin that wraps the widget and exposes it in the widget pallette, provides property support, etc.
I might have misunderstood your question but don't you just add a QGLWidget to your design in Designer. Right click the widget and select Promote to... ?
I started developing an application, I designed a empty QMainWindow wit just the menu bar. and created two new QWidgets and designed the features of my application on each.
Here is the thing: How do I add and interchange the last two QWidgets inside my QMainWindow?, so QMainWindow will show one set of features of my application at once.
Perhaps you are looking for QStackedWidget
(from Qt: The QStackedWidget class provides a stack of widgets where only one widget is visible at a time.)
You can find it insde the Containers group
Add a StackedWidget into your MainWindow, then
Directly edit the widget at present page by Qt designer(use the upper-right arrows to switch between differetn widgets). Notice that
in StackedWidget you have to create another signal sender, ex: a
combobox to decide which widget should be shown), or
If your custom widget contains some customized and hand-crafted
funcationalites that Qt doesn't have, you might need the widget
promotion. (otherwise, skip this)
I have a Main window build with Qt Designer and I also have a widget built with Qt designer (both in a separate ui file). How can I instantiate my widget into my mainwindow at runtime?
The easiest way (using Designer) is to open your main window, drag a QWidget into it, and position/name the QWidget like you would your custom widget. Once that is done, right-click on the QWidget, and select Promote to.... A dialog will show up with the widgets it can be promoted to. At the bottom of that dialog, you can add a new widget for promotion. Type in the class name and include file information, and add that widget. Then select the entry in the list, and click the Promote button.
At the end of this process, you should be able to recompile, and your custom widget will be where you placed it in the main window.
Can't you use QMainWindow::setCentralWidget function?