All Questions
148
questions
0
votes
1
answer
65
views
Pyplot (matplotlib) plot in QWidget on dialog page in Python
I have an application that has worked for over a year. I added a new section. This section is opens a dialog upon pressing a button. In this dialog, I put a bland QWidget. I want to plot using ...
- 11
0
votes
0
answers
74
views
How to stylize custom Qt widgets globally?
I have custom widgets which inherit QWidget.
I'm trying to use the palette, style, and font of the widgets as much as possible, and implement QWidget::changeEvent(), to keep their look consistent with ...
- 7,481
0
votes
1
answer
82
views
How to make custom QWidget receive all key press events, even shortcuts of global actions?
In Qt 5, assume the following custom widget:
class QMeow final :
public QWidget
{
public:
explicit QMeow()
{
this->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
...
- 7,481
0
votes
1
answer
76
views
How to switch between two QGraphicsView inside a QWidget
I have two different views to display inside a QWidget window. Each view has a separate QGraphicsScene.
I want to toggle between the two views on button click.
This is my current implementation:
...
0
votes
0
answers
82
views
The problem of binding a custom widget frame to the edges of the screen (Qt C++)
The problem is that my application has a custom frame, i.e. the standard frame is disabled using (Qt::FramelessWindowHint), and my problem is that the standard frame has the ability to snap to the ...
- 1
0
votes
0
answers
42
views
How can I trim a widget?
I need to trim a QWidget. I need it to be sliced as if a mask were applied and part of it be invisible.
How can I do that?
- 307
0
votes
1
answer
150
views
Why is my QStyledItemDelegate not visible?
I'm trying to create a custom item delegate for a list of objects, but when I run my app the list view is blank. I know my model is populated, and it displays as expected with the standard default ...
0
votes
1
answer
912
views
Qt : Widgets must be created in the GUI thread
I am facing this issue which crashes my Qt-based app at seemingly random times after running for a while (a few minutes).
ASSERT failure in QWidget: "Widgets must be created in the GUI thread.&...
- 1,163
0
votes
1
answer
48
views
Looking for the correct Qt5 mechanism to create an identical sized QGridLayout using a custom widget in the grid
So,I'm trying to build a small app that watches my MQTT server for messages and presents a widget with the MQTT JSON content for every message it sees. The logic works well, but I'm having a lot of ...
- 548
0
votes
2
answers
3k
views
Updating view based on model update on Qt
I am having trouble updating my qtableview when the data wrapped by the model the view uses changes. I am not talking about appending/adding data here, I am specifically talking about modifying ...
- 315
0
votes
1
answer
20
views
How to re-enable the background of QGraphicsView's child widgets?
When adding QWidgets such as QGroupBox and QFrame to a layout set on QGraphicsView, those widgets have no background. Various things that seem like they should re-enable it, do not work. (E.g., ...
- 101
0
votes
0
answers
43
views
Can't see a widget
I've been trying to create a frame to be shown as a tooltip, but be functionally different. It's got to be shown at a certain point, floating, to be called from a delegate.
Now, if I don't pass a ...
- 323
1
vote
1
answer
105
views
What's the difference between two QHeaderView signals?
On Qt doc website in QHeaderView class i found two signals with similar descriptions:
void QHeaderView::sectionDoubleClicked(int logicalIndex)
and
void QHeaderView::sectionHandleDoubleClicked(int ...
user10609288
1
vote
1
answer
487
views
Why QWidget::Mask based on QPixmap works fine, but Bitmap doesn't
Target: make my widget rounded, using QWidget::setMask
At first, I want to make a mask using QRegion, but later I found that, make a rounded Rect based on region is a not simple way.
So I decided to ...
user10609288
2
votes
1
answer
510
views
How can I go to a specific QWizard page number?
Qt 5, QWizard
Hello! I have checked some answers on that subject but still can't quite figure that out. Here is the idea that I want to do:
I want to create a button group navigate between QWizard ...
user10609288