I'm looking for a away to find an index of a certain tab in QTabWidget, so I can set the current index to this one. I remove some of the tabs so I don't want to use just an int to set the current tab, because in the future those removed tabs are going to be visible again and I don't want the code to depand on that.
So ideally I would like to be able to write something like that:
ui->tabWidget->setCurrentIndex(ui->tab->getIndex());
Is there some method like getIndex()?
Use ui->tabWidget->indexOf(your tab)
Related
I need to switch from current tab to another without clicking on the tab itself.
In Clarity's documentation, you can see that the *clrIfActive directive accepts a boolean input to force a tab to activate.
So in your case, just pass true to the *clrIfActive of the tab you want to programmatically select. How you do that depends on how you create your tab in the first place: statically, with an *ngFor, based on a specific tab model, ... We can't help you out more unless you provide an example of what you are trying to do.
I'm trying to find a way to override the default expand/collapse behaviour when clicking on a Group element in a VisJS Timeline.
I'd like to allow other actions from the group contents, and invoke the expand/collapse action programmatically from somewhere else in the UI.
I'm been looking into the code in the v4.21, but I don't seem to find a way to override the _onGroupClick on the ItemSet.
Any suggestions on how to achieve this in the most elegant way? (trying to avoid monkey patching)
thanks,
I've been looking for the same solution, and I found the solution just here
In my case, I just use the 'off' to disconnect the toggle from the general first cell of each row. Then I manually change the showNested property of the groups and call setGroups to open, in this way I can show the action exactly in the item I want not in the whole cell.
I want to do the next.
I have a program that must search and show some files. Before, I will do it with a QTextEdit, searching in the system and appending it when I found one.
Now I want to to the next: I want to show the name of the files but I want to select it in the GUI and, in anohter text edit, show the first line in the document.
So, I want to transform any file in something that I can select it (like a Radio Button, a check button or something like this).
I search info in the web but I dont found anything.
Anyone knows what I can do?
Usually you use something like a list view (list of selectable items) to do this. Fortunatley Qt has one! called QListView :)
See this link: QListView
You add one entry to the listview per file (for exampe). And then when you click/select an entry this triggers an event which you can make display the contents of the file in a nearby text box.
I am displaying a combo box in something of a WYSIWYG preview. I want the user to be able to click on the combo box and see the options inside, but I don't want them to be able to change the value. I tried using preventDefault() on the change event but it doesn't work. I don't want to disable it because I do want the user to be able to "look inside" the dropdown.
So I'm trying to block the change, but can't. My next resort is to change the selected index back to what it was before the change, Is there any way to do this within the scope of a ListEvent.CHANGE event listener?
Current Workaround is to basically re-assign the controls selected item the same way I am defining the selected item when I originally build it (a default selection). So a user sees their change then it immediately changes back to the default selection.
Are you sure that a combobox is what you want? could you do the same thing with a list component that is not selectable?
update:
If you must use a combobox and you dont want the lag from listening for the event and resetting the control, I see two possible options. You could subclass the control and make your own. When you do, hijack any methods that set the value besides the initial selection.
Or, you could try something like this: http://wmcai.blog.163.com/blog/static/4802420088945053961/. The site seems like it is in another language but the code is still there. It will allow you to make your options disabled, so the user cannot choose one of the other options.
HTH
I've got a QTableView for which I want to display the last column always in edit mode. (It's a QComboBox where the user should be able to always change the value.)
I think I've seen the solution in the Qt documentation, but I can't find it anymore. Is there a simple way of doing it?
I think I could archive this effect by using openPersistentEditor() for every cell, but I'm looking for a better way. (Like specifying it only one time for the whole column.)
One way to get the automatic editing behaviour is to call the view's setEditTriggers() function with the QAbstractItemView::AllEditTriggers value.
To display the contents of a given column in a certain way, take a look at QAbstractItemView::setItemDelegateForColumn(). This will let you specify a custom delegate just for those items that need it. However, it won't automatically create an editor widget for each of them (there could in principle be thousands of them), but you could use the delegate to render each item in a way that makes it look like an editor widget.
There are two possibilities:
Using setIndexWidget, but Trolltech writes:
This function should only be used to
display static content within the
visible area corresponding to an item
of data. If you want to display custom
dynamic content or implement a custom
editor widget, subclass QItemDelegate
instead.
(And it breaks the Model/View pattern…)
Or using a delegate's paint method. But here you have to implement everything like enabled/disabled elements yourself.
The QAbstractItemModel::flags virtual function is called to test if an item is editable (see Qt::ItemIsEditable). Take a look at Making the Model Editable in the Model/View Programming documentation.
I can't see an easy way to do this, but you might be able to manage by using a delegate. I honestly don't know exactly how it would work, but you should be able to get something working if you try hard enough. If you get a proper delegate, you should be able to set it on a whole view, one cell of a view, or just a column or row.