Is it possible to set widget in center of dialog or windows in QDesigner, say I have a widget contain 3 line edits and labels and I want to set this widget in center of window.
In latest Qt Designer, right-click a widget in the Object Inspector and choose your preference under Layout Alignment.
It should be quite simple:
Insert horizontal spacer
Set Horizontal layout
Insert Vertical layout
Insert another horizontal spacer
Add Vertical spacer to Horizontal spacer (drag to widget tree)
Add your widgets .... labels, textedits
Add another vertical sapcer to Horizontal space
Works in my QtCreator, should also in Your Designer :)
Good luck.
Add a layout to your windows and add the widgets in the layout. Then you can set the position policy in the properties panel of the layout.
Related
I have a QTreeWidget inside QStackedWidget. How can I set that QTreeWidget to have 100% width and 100% height in QStackedWidget?
That QTreeWidget should have the same size as its QStackedWidget parent.
To have a responsive design.
Image:
In Qt Designer, click the 3x3 box near the top center for each element in your tree. It is called Lay Out in a Grid, and looks like the shortcut is probably Ctrl-G. The other two layout options are Lay Out in a Form Layout and Break Layout. It sounds like all of your widgets/containers currently are set on Break Layout.
This enables a QGridLayout for placing the sub-elements.
Without that, it is without a layout, and will only do absolute positioning. For any container in Qt Designer, these three buttons act like a radio button group for the layout of the widget.
Hope that helps.
What I'm trying to accomplish is a very simple and straight forward need, or I thought, but for the life of me, I can't seem to find a way to do it.
In my qt application I want to be able to make a widget or a layout fill the entire space of the parent widget.
For example, let's say I want to have a label with a fixed height and beneath it a stacked widget which occupies the rest of the height of the window.
Here's what I do in the qt-creator designer:
drag a label to the form
drag a stacked widget to the form
select both of them and then right click > lay out > lay out vertically
select the verticalLayout object and in the layoutStretch property have 0,1
Now, how do I make the verticalLayout occupy all of the width/height of the centralWidget?
Nothing seems to work for me.
Thanks.
You've merely put two widgets in a layout, but you also need a layout on their parent widget - on the form. Here's what you should do instead:
Drag any number of widgets to the parent widget (the form). Arrange them roughly the way you want them to be once laid out.
Right click on the form. Select "Lay out >" submenu.
Choose the desired layout from the menu: horizontal, vertical, grid, etc.
I reimplement a QScrollArea and I want to add several widgets to it at runtime. The problem is, till the scrollbars are shown the content of the QScrollArea doesn't fit to it. Only if I add more widgets so the scrollbars shown the content fits correctly.
I already tried this after adding widgets
this->widget()->resize(this->widget()->sizeHint());
or
this->widget()->adjustSize();
But this doesn't worked. What I have to do to resize the content? Why the content fits after the scrollbars appear?
Add an appropriate layout to your scroll area before setting a widget.
Set the size constraints(min and max property ) of the widgets being added
I am not sure about your widget layout inside the scroll area, but you can make use of spacers to align the widgets ( when initially there are not many widgets to fill the scroll area for the scroll bar to appear)
I am using Qt Designer, and I would like to move a couple of top-level widgets into a horizontal layout.
I have dragged a "Horizontal Layout" object into the form. I am now attempting to drag the desired widgets into the layout.
Unfortunately, the new Horizontal Layout widget is infinitely thin:
... and I cannot drag my "Import Progress" label widget or my progress bar widget into the new horizontal layout widget.
Note that when I attempt to drag the desired widgets over the new horizontal layout widget, Qt Designer does not do anything useful for me in terms of expanding the drop region to make the horizontal widget available as a drop target. So I'm stuck.
How do I add widgets to an infinitely-thin layout widget in Qt Designer?
Select the layout, and then drop the widget onto the corresponding selected item in the Object Inspector pane. If you find it tricky to select the layout on the actual form, you can also select it via the Object Inspector pane.
One way (that I usually do as a workaround for not having to show the structure panel) is to select the layout, setting the top or bottom margins to any value (10, whatever) and then dragging the component into the layout. Yeah, that is just for the pure pleasure of dropping the component in the layout, i know, but is a way.
My small trick:
Select layout
Change temporary "layoutTopMargin"
Drop into layout required widgets
Restore layoutTopMargin to default 0
I am trying to place a set of buttons so that they are anchored to the bottom right of the screen. My problem is that whenever I resize the screen, the buttons are not anchored to the bottom right, but stay in its current position.
I have placed two Push Buttons inside a Horizontal Layout. I then placed this layout inside a Grid Layout, which contains a Horizontal and Vertical Spacer. I have modified the Grid Layout layoutSize property to SetMaximumSize.
What am I doing incorrectly, so that I can get my buttons to be anchored to the bottom right?
You have almost everything just right here, but you probably overlooked something that is really easy to miss when you first start using Qt Designer.
Your grid layout is sitting inside your widget with a fixed size and position. It too needs to be managed by a layout. If you take a look at the Object Inspector on the top right (that contains your hierarchy) you will probably see your top level widget with a red icon. This indicates that it contains no layout. You have two options to fix this...
Have your existing grid layout placed into another main layout (like a vertical layout). You would simply right click on your top level widget in the Object Inspector -> Lay Out -> [Choose a main layout type].
Have your grid be the main layout. To do this you would need to remove the grid layout and have your child items arranged exactly how you have them in that picture. Then follow the previous option, right clicking on the top level widget (or the blank background) and choose Lay out -> Grid. This will pop your widgets into a Grid at a best visual fit (which you can then fix if needed), and your grid will be the top level layout.
That grid layout will make placing other widgets quite hard. Try this instead:
Add (from left to right) horizontal spacer and the two buttons.
Multiselect them all.
Select "Lay Out Horizontally" (Ctrl-H) from the Qt Designer's (or Qt Creator's) top toolbar (not from the widget box in the left!).
Add vertical spacer on top of the previous widgets.
Select the main window by clicking it (none of the added widgets are now selected).
Select "Lay Out Vertically" (Ctrl-L) from the top toolbar.
Done.
It seems that you're doing it correctly. Just forgot to apply a layout to your central widget, right? The Grid layout should be arranged in your central widget. The more convenient way is to remove grid layout widget and lay out the central widget in a grid ;-)