I am making my own browser with Qt/Webkit for touch screen devices. I want to have My own editbox in browser ( so that when user click on it, I can open virtual keyboard), Touch friendly listbox and other controls.
So In QWebView I want to have MyOwnTextEdit instread of QTextEdit and same for all other UI controls.
Please tell me How can I do it?
I am using Qt embedded linux 4.6.2.
For example, you can see how this kind of things realized in more easy widgets here: link text. It's the first way. The second way is to create you textbox with SIGNALs/SLOTs and also code widgets GUI with Qt styles. Good luck!
Related
I am working on a small UI with QT Creator and its drag-n'-drop tool (QT Designer). Everything was fine till I realized I had to make some widgets dynamic. For example, I have a checkbox and I want some button to appear only if this checkbox is checked by the user or I would like to change the appearance of another widget when the user clicks on some button.
Is it possible to do it only with QT Designer?
Yes, but it's very limited.
Qt designer have signal&slot editor. Yes, you can connect signal clicked(bool) to setVisible(bool) slot on button and make button visible only when checkbox is checked (see screenshot).
But when You need more complex dynamic interface (e.g. creating buttons), designed will not help You.
i'm programming a Qt Quick application and I'm looking for a possibility to display the user errors. In Qt widgets there is QMessageBox but i can not find any equivalent to this in Qt Quick.
Sure i can create a MessageBox by myself but I can't imagine that there is no given possibility?
I found an ebook on the official site here and there is an Dialog described on page 67 but it doesn't work anymore and i can't find any further information about that. Is it dropped in the current version?
Thanks in advance
There is no Qt-Quick component for this yet. What I do in my application is using the Window QML component. I set the modality property to Qt.WindowModal to have it as a modal Window. You can then use the Button component to create OK/Cancel buttons.
Another thing I do is create these modals dynamically when something wrong occurs using Qt.createComponent() in QML.
Edit: Just discovered a new Dialog component that will be released in Qt5.2 that seems to match what you are looking for: MessageDialog
I have a Qt project where I'm using QGraphicsView framework, also I have popup windows on the scenes. (QDialogs)
When someone clicks on a certain button a popup window appears, and I'm invoking it with the .exec() method instead of .show() to make it the active one. Also I want to give it a visual effect like lightbox provides for html pages, so it would be obvious for the user too, that the background window won't communicate. Do you know any simple solution to make it work? or is it hard to implement in Qt?
EDIT: I don't know if it's obvious of not, but it's a desktop application, not a web application.
Just create QFrame over necessary area with customized background and transparency. For animation effect you may use QPropertyAnimation + QGraphicEffects and other stuff from qt animation framework.
Now I found another way to accomplish what I wanted. Like this:
QWidget* mytranswidget = new QWidget(mybgwidget);
mytranswidget->setStyleSheet( "background:transparent; background-color:rgba(0,0,0,95)");
mytranswidget->setWindowFlag(Qt::FramelessWindowHint);
mytranswidget->setGeometry(mybgwidget->rect());
mytranswidget->show();
I'm doing it at the beginning of my popup widget's constructor so it's being drawn before draw my popup, so it will be shown in the right order.
I'm developing an app which works more or less like the Notes app. When user click the + button a modal window with TextEdits is to be slided up，just like the Notes app did. However I was unable to locate any resource mentioning this kind of thing. Any clues?
I think you are looking for the QML Sheet element. You will need to implement the TextEdit part yourself.
I'm trying out qt creator lately and i hate reading hours of docs and tutorials just for doing simple tasks.
So, in winforms i can drag & drop a control from toolbox and set the dock property so it automatically maximizes itself to it's container's size.
What is the equivalent of this behaviour in qt?
I googled this and found it strange that nobody wondered the same before.
There are differences between the concepts of WinForms and Qt. You need to study the concept of layouts. Take a look at the relevant part of the documentation of Qt Designer: Using Layouts in Qt Designer
Before a form can be used, the objects on the form need to be placed
into layouts. This ensures that the objects will be displayed properly
when the form is previewed or used in an application. Placing objects
in a layout also ensures that they will be resized correctly when the
form is resized.
Qt uses layouts. Add QHBoxLayout or QVBoxLayout to the parent widget.