I was wondering if there is an easy way to show the grid lines separating sections in a grid layout governed by the QGridLayout class.
The doc has been failing me so far but I still feel there is an easy way to achieve this.
There's no built-in function for this. Unfortunately you'd have to implement your own grid line using QLine to border the widgets.
Related
I have just tried a simple thing, in designer I created one push button, inside grid layout. The problem is geometry option got disabled in Property box, and I am not able to change the cordinates. In this situation how should I move the push button from its original place if required?
Can somebody help me to achieve this??
You can't move or resize a widget inside a layout because its position and its size are managed by the layout. If you want to manage its geometry yourself, do not use a layout.
Qt layouts are designed to help you make scalable user interfaces. For this, moving or resizing the button is usually done by the layout using sizeHint() and sizePolicy().
I would suggest reading up on how to use layouts and the use of spacers, as this will impact the location and size of your button.
Well I found a solution to that
Break the Layout, arrange the widgets and then set the layout
I would like to be able to resize two QListWidget that sit in a QVBoxLayout, by grabbing the edge in the middle of the two and sliding it up or down. One would shrink, the other would get bigger.
Here is a screenshot of a sample app:
I would like to be able to grab the bar between the two lists and resize them.
This is what it looks like in the Qt layout editor:
I'm not sure if the vertical layout is the good choice, here, there may be another vertical layout that provide this functionality maybe?
Is it even possible with Qt?
You need to use QSplitter. It's available in the form designer.
To add to Riateche's correct answer, you can also use qt-designer to add specify the type of layout (QSplitter) by first selecting the widgets and then right-click to layout->horizontal splitter etc.
Here's a simple tutorial I ran by a few years ago: http://www.youtube.com/watch?v=E7Ud6FonsR4
On a form designed with Qt Designer, I have two QGroupBoxes with a bunch of controls in each of them. Both group boxes have nearly the same contents (QLineEdits with associated labels).
What I want to do, however, is to align the controls together, as if they were part of the same grid layout. But since they are in separate containers, they can't share the same layout, and I don't want to give them a fixed width.
Is there a way to do it in Qt Designer? If not, is there a way to do it in code?
Thanks!
There is no way to do this in Designer. As far as I know, Qt does not provide a good way to do this in code either. If you really want this, you will probably have to rely on something a little hacky.
Here's my first idea: Override resizeEvent() in the widget that contains the two group boxes to get the preferred size (via sizeHint() or minimumSizeHint()) of all of the labels and set the fixed width of all the labels to the largest preferred width.
I would encourage you to ask yourself if this really matters (is it worth the development time?) and consider whether you can avoid the problem entirely with a slightly different UI design.
BTW, you might want to take a look at QFormLayout if you haven't already.
What I'm trying to achieve is that a widget could exist in two different layouts, in this case in QHBoxLayout and in QVBoxLayout. I'm implementing a system which dynamically switches between the two layouts when a device's screen orientation changes.
Currently I'm creating, let's say a complex composite widget called MyWidget and adding it into a two different layouts:
MyWidget *wgt = new QWidget();
QVBoxLayout vlayout;
QHBoxLayout hlayout;
vlayout->addWidget(wgt);
hlayout->addWidget(wgt);
Now imagine that both layouts are hosted within a 'root' layout, and that this root layout can resize into a more wide than tall 'landscape' mode, and into a more tall than wide 'portrait' mode.
The MyWidget shows correctly in only the first layout it is added into, and when the layouts are switched, it shows all wrong or not at all.
I don't know if I'm making any sense here, but this is my problem. Maybe when the switch event is called all child widgets and layouts should be resized, so it would always look right. Only problem is that I don't know how.
This isn't a general solution for changing layouts, but an easy solution in your case: Just change the boxlayout's direction.
hlayout->setDirection(QBoxLayout::TopToBottom);
// now your hboxlayout works as vertical layout
hlayout->setDirection(QBoxLayout::LeftToRight);
// and now it is horizontal again
This isn't particularly easy to do, but is possible.
First of all, I'd recommend that you actually create two different widgets, one for the vertical and one for the horizontal, and manage things that way. If the source data is properly separated from the UI class, you should be able to do so without too much trouble, but by incurring some memory overhead.
One way to do as you desire would be to completely remove the widgets from one layout and add them to the other when you need to change the arrangement on the screen, and change the layout that is added to the widget. This should cause the same widgets to be drawn in a different way.
A different, more intricate way of handling this (although potentially more efficient) would be to write your own layout and have it handle rearranging widgets based on the orientation change.
Do you know any simple drawing libraries with align support (one component to other, also align to grid)
I would like to implement simple editor of wall configuration in the apartments, by the way.
Or, may be, there is no such component and is better to use Graphics class?
You can try http://www.rogue-development.com/objectHandles.html