Im working on a little program that require a QGroupBox that have inside a QLineEdit. I want to make "invisible" the border of the QGroupBox using:
groupBoxName->setStyleSheet("border:0;");
The problem is that even the QLineEdit inside of it inherit this style.
How can I make invisible the QGroupBox border but not the QLineEdit border?
Thanks
Give an object name for the groupbox using setObjectName() function,
group_box->setObjectName("MyBox");
Then you could style it as a css object.
group_box->setStyleSheet("#MyBox{border:0
This will only affect the #MyBox
Related
I have a QPushButton with image, i have set focus policy to strong focus but, while focusing that QPushButton it is not getting highlighted(no dot frame or default blue border)
You should take a look at the QPalette(in Qt Designer) of your QPushButton and in particular, the HighLight color which is supposed to handle this effect. Moreover, make sure you didn't define focusPolicy in the stylesheet of a parent of that QPushButton, as that could cause problems, because QPushButton would inherit that property.
I am writing a little program in C++ with Qt.
I have a QGridLayout with 3*3 QWidget. In each QWidget, I have a QVBoxLayout.
Within that QVBoxLayout I need to put a certain number of black and white rectangles.
For now, I use QWidgets for these rectangle and I apply a background-color to get the white and the black ones.
I saw in the documentation something about a Rectangle class that is linked with QtQuick and I don't really want to go into that.
Thanks for your answers,
I wouldn't bother with the layout and widgets unless you actually need interactive objects for each square. Just overload the paintEvent member of the widget you are using that contains the grid layout and use the QPainter object and call fillRect.
To get an outline around a widget, use a QFrame. Also QLabel subclasses QFrame. There are a lot of examples of using QFrame in the documentation.
Hope that helps.
I have a QMainWindow whose central widget has been set to a QGraphicsView viewing a black scene (for test purposes). Note that in the code below, I use my class derived from QGraphicsView, called CQtGlView, which reimplements only the resizeEvent function.
Regardless of whether I add the view directly,
CQtMainWindow::CQtMainWindow() {
m_glView = new CQtGlView();
setCentralWidget(m_glView);
}
or stick it in a layout with margins of 0 in a dummy widget,
CQtMainWindow::CQtMainWindow() {
m_glView = new CQtGlView();
QWidget* dummy = new QWidget();
QHBoxLayout* l = new QHBoxLayout();
l->setContentsMargins(0,0,0,0);
l->addWidget(m_glView);
dummy->setLayout(l);
setCentralWidget(dummy);
}
I get an unwanted grey border around the widget.
The screenshot below illustrates the problem, visible between my scene and the windows aero border.
This would not be a problem if my application did not allow switching to full screen. The border is very obvious once the rest of the screen is black.
It's possible this area represents the DockWidgetAreas around the outside of the central widget.
Is there anything I can do to solve this other than not use QMainWindow? (Undesirable due to my use of menuBar, tool bars, and statusBar.)
It turns out that QGraphicsView derives from QFrame, where I assumed it was only a QWidget.
The solution to this problem was to call setFrameStyle(QFrame::NoFrame); in the constructor of my QGraphicsView subclass. Or if it was not a subclass,
m_glView->setFrameStyle(QFrame::NoFrame);
Have you tried setFrameShape(QFrame::NoFrame) on the QGraphicsView?
I want to create a widget that contains several QDockWidgets on purpose of putting it into a QMainWindow. Problem is that if I add QDockWidgets to my QWidget class with layout->addWidget(dockWidget);(I don't know any other way of doing it) and then setLayout(layout) I can't do anything to the QDockWidgets but dock and undock. I can't move them, I can't position them in another place.
QMainWindow has this feature addWidgets that QWidget doesn't have. Using QMainWindow everything works perfect, but I want it to work the same if I add a QWidget object(containing some QDockWidgets) to QMainWindow.
Is there any possibility to make my QWidget fully support those QDockWidgets, and use the on full potential(move, scale, dock, change position)?
Thanks
If you're using a lot of QDockWidgets, simply enabling dock nesting might be the solution to the underlying problem.
If you absolutely need to have a widget inside the QMainWindow, you can try putting another QMainWindow in the first one. You might have to set the windowFlags property of the second QMainWindow to Qt::Widget.
I have a QHBoxLayout horizontal layout with a lot of list widgets added to it.
And although I call setMaximumWidth(300) and setMinimumWidth(300) for the list widgets, once they don't fit on the window, they start to shrink.
I would like to have a scroll bar instead. Is this possible?
Yes, if you put the Layout inside a parent widget, and that parent widget inside a QScrollArea.
QScrollArea Documentation