Here in this tutorial a custom control named PieChart has been created by extending <QtQuick/QQuickItem> But I need to extend QQuickTextEdit I tried to find it but it seems QQuickTextEdit class is not available in in Qt framework. So I'm not able to extend it. Where could I find it?
How Can I extend a particular qt quick control (such as TextArea or TextBlock) in c++?
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I have a C++ class in which I set the image path which will be available only at run time. I want to use my class as a Custom QML component which should be available in designer tab & I can drag that & use in form editor.
You should separate logic from view.
For an starting point, expose your images paths as model into QML and use a ListView with a Rectangle as delegate and assign model to it. Therefore you have a rectangle for each image path.
For more information read this and this one
*Please note that registering QML Component in Qt 5.15+ has been changed.
I want to create a custom control like this tutorial.
However, I do not want to use SWT, but JavaFX. But I do not know what class I have to inherit and how I can render my view in JavaFX.
In the SWT example, the class EmailControlRenderer extends from TextControlSWTRenderer. From which class would I have to inherit if I want to render an EObject in JavaFX?
From the EMF Forms documentation, it seems the JavaFX renderer is very much experimental at this point, so chances are you will not be able to do what you want to do. Consider sending the developers a mail.
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'm newbie in Qt. I came from Delphi IDE. I can't find solution to inherit from form. For example: In Delphi project I had own TBaseForm class with controls created using designer (.dfm-file, similar to .ui in Qt). When create new form, I could select form from project and then new form had all controls from base form. Furthermore, changing controls in base form had affects in all descendants in real time. Can I do something similar in Qt Creator?
Regards.
You can do something like you say, manually.
For example:
Add new form class inherited from QWidget (name it BaseForm).
Add new form class inherited from QWidget (name it ChildForm).
In childform.h/cpp manually change inheritance from QWidget to BaseForm.
In design time, you can't see changes of child when you change parent. But, when execute it, you'll see it.
I am new to Qt and am slowly finding my way around. My goal is to have a QListView of a QFileSytemModel where the names of the files in the icons wraps, similar to the behavior found on any OS where the text gets split if the name is too long.
From perusing the internet, I believe I need to create a custom class that extends QAbstractItemDelegate to do my special drawing and text wrapping. However, I haven't been able to find the default ItemDelegate that the stock QListView class uses out of the box.
The reason I want the default class is so I can poke around and figure out more about the life-cycle of Qt components while working on my own renderer. I was wondering if anyone knew of where the default renderer for the QListView class could be found?
If you want to show icons with text, QListView has a mode to do that, just set the view mode to QListView::IconMode using QListView::setViewMode(). If you still want to customize display features it is right that you should implement a custom item delegate, preferably subclassing QItemDelegate and overriding paint() with your own implementation.