I have a widget that should display images that user has chosen (something like they are shown on the screenshot) and I need to allow users to remove images from this widget. Is there already some widget capable of doing this in Qt or I need to implement such widget by myself?
So, basically I need to display a small image with small closing button in top-right corner.
Yeah, you can. Make a custom widget
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I'm getting started with Qt and decided to build a full-screen text editor. I want to have a button (button with arrow in screenshot) attached to a QDockWidget which opens and closes it so the button is always visible to the right side of the screen and stay anchored to it when dock is visible or resized.
My current app is a simple fullscreen textEdit set to centeralwidget in Mainwindow.
I haven't found a way to do this yet with layouts or existing addAnchor() functions so any help or direction is appreciated.
You can achieve what you want by using a container for your text edit and the button. A QWidget instance can be used as an "invisible"*** container for other widgets.
So in Qt Designer you add a widget as a central widget of the main-window, inside this widget you add the text edit and the button, then you set a vertical layout for this container widget.
Don't forget to restrict the docking widget to only dock to the right side, you can do that with: dock->setAllowedAreas(Qt::DockWidgetArea::RightDockWidgetArea); //assuming dock is the pointer to your QDockWidget.
In case you want the dockWidget to be able to dock to any side and the button to follow, you can do that too, but it get a little bit more complicated. Basically you need to connect a slot to dockLocationChanged of your dockWidget and based on where it's docked you need to set-up a new layout for the container widget to be vertical or horizontal and the order of the textEdit and the button based on the side the dock happened.
LE:*** you will most likely need to set the margins you want, since both the widget and it's layout can have them and the actual content might have higher spacing than you want.
As shown as screenshot below, there are 3 widgets overlapped. When user clicked a certain point (eg. the white cross in the example), I want get all widgets at this point. In this example, I want get Widget 1/2/3 and their z-index.
Is there a simple way to achieve this?
More details:
I have a Microsoft Visio Qt Designer like app developed in Qt, and I want implement a feature as below:
When user first clicked the white cross point by mouse left button, the front most widget--Widget 3 will be selected;
Then, when user clicked this point again, Widget 3 will be unselected and Widget 2 will be selected;
I currently need a small ImageViewer in my project, where you can zoom in and go to next or previous image. These buttons should be fixed at right bottom corner like in this picture:
In this case I have q QLabel which has a Layout with some buttons. But now it should be zoomable, so I need QScrollArea, like explained here. But how I add my buttons again in this example? It is possible to archive this view just with QtDesigner?
Maybe QToolBar will suite your needs. It will make a floating panel over your graphics view. An example. If you need to achieve the background of the toolbar transparent while its buttons are semi-transparent then it is doable as well. But first you need to decide if toolbar works for you.
I am creating a widget on click the button. The widget is appearing at center of the screen. I want to show that widget at a proper predefined position of the screen. And when ever I open that widget it should show at that point only. How to do this not able to understand.
Use QWidget::move() function before you show it.
Let's say that I have an application frame, and I want to show a popup QCalendarWidget over on the right side of the frame. Normally, QT will clip the edges of the QCalendarWidget, cutting it in half and not displaying the rest, as it would be over the right side border.
Is there a way to work around this limitation without resorting to implementing a QDialog?
I want the widget to be visible outside the bounds of it's container.
If you'd show your Calendar, let's say, after a button click, as QDateTimeEditor does, it's contents will not be clipped, cause it do not belong to frame. It will be just a widget, that shows in a dialog manner. And maybe you should even place it in QDialog, that is modal and provides some convenience methods, rather then simple QWidget.
Btw, why don't you want to use QDatetimeEditor?