I have a custom widget which has a QLineEdit & 2 QPushButtons inside it.
I want to align them generically so that they look the same on all platforms(WIN, LINUX & osX).
I tried to align them using offsets by manually checking different offsets. It worked fine for windows&linux but on mac, the buttons are hidden by the QLineEdit.
I am wondering if there's a generic way in which i can have these buttons inside QLineEdit which works for all platforms & scaling values.
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As the image shows, i want to have two buttons just like the one in visual studio. I tried QComboBox but it din't solve the purpose as it's label is not editable.
I solved this on windows by moving the two buttons by their sizes,
adjFirstBtnWidth = lineEditWidth - firstButtonWidth - secondButtonWidth
adjSecondBtnWidth = lineEditWidth - secondButtonWidth
Now, I moved the first button by adjFirstBtnWidth & second button by adjSecondBtnWidth on x axis.
It seems to work on windows & Linux but I've to wait to see if it's working on OSX or not.
Hope this is helpful to someone.
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I am using a Qt Designer GUI that has some widgets that should appear alternatively. I tried to solve this by simply hiding the unwanted widgets and showing the wanted widgets using setVisible().
This works well and most times the unwanted widgets are optically replaced by the new widgets smoothly. However sometimes I can see a flickering in the layout that sems to happen because an update or something similar takes place while both of the widgets are visible at the same time.
How can this flickering be suppressed?
I tried setUpdatesEnabled() but that wasn't effective.
The (easy) solution is to use QStackedWidget.
This is probably simple, though I can't find the correct CSS trick to handle this one.
I want to have this kind of button-group (separated with lines, containing a context menu ) in Qt. They must have native look and feel (not like below examples) so the only needed change seems to be removing rounded corners of a QPushButton from its right side (for left-most button), left side (for right most button) and both (for buttons in the middle).
Qt does not support this. You can use CSS to style the buttons like in the example, but you can not use natively styled buttons like this.
If you really need this, the only option I see is to write custom controls for this, with customized drawing code for each OS GUI style you want to support.
You could also try to use standard buttons that overlap and use custom code to paint some kind of line over the overlapping region, but I don't think that would be a good solution.
I am working on a custom control box (that min,max/restore/close button in the top right of your Windows titlebar) for my new application. I use closeIcon = style.standardIcon(QStyle.SP_TitleBarCloseButton) to get the correct icon for them. See the full code here in my other SO question. What I got is a black icon. In which I need the white version when it's in hover state.
Can we .. I don't know, inverse it? Or should I get another icon from QStyle?
This question (and several others) are from the intention of creating a chrome like tab in PyQt application, by hiding the titlebar and reimplementing control box. But it didn't gives the best result. Right now this is my solution to create a chrome like tab in PyQt application. Therefore, I close this question.
The basic idea is: I would like to draw over everything on the screen.
One way I can imagine this is creating a transparent full-screen window without window controls (minimise, maximise, etc.) or borders. Then drawing into that window which is transparent. The problem I can think of is that I will be unable to control windows which are behind our transparent window.
How could I do something similar to this, without the mentioned problem? I would also like it to work on multiple operating systems if possible.
Edit:
The user will not be drawing with the mouse or other means on the screen, but will be able to continue use his desktop like normal, without that my program interferes in any way (other than the drawing on the screen). My program will only display something on the screen, which the user will be unable to interact with (at least that's the plan).
Qt 5 implements it:
QWidget w;
w.setWindowFlags(Qt::WindowTransparentForInput);
Qt 4 didn't support this functionality yet - see QTBUG-13559. The bug report had a hint on what needed to be done for Windows.
The method you describe is the one to use; a transparent full-screen window.
If you're using the left mouse button to draw, you'll need a mechanism of switching modes to be able to select items through the window and send events to the operating system.
I am using Qt and creating a GUI with multiple sub windows. I am using MDI Area for the same. I want to hide the top toolbar of mdi subwindow but using window flags is not helping.
I have tried writing the code as follows. First I tried for mdiarea and then for subwindow but neither worked.
mdiarea.setWindowsFlags(Qt::FramelessWindowHint);
subwindow.setWindowsFlags(Qt::FramelessWindowHint);
I have also tried using Qt::CustomizedWindowHint but even that is not helping. Please help me with this.
Thank You.
Try this:
mdiArea->addSubWindow(new QLabel("Qt::FramelessWindowHint"), Qt::FramelessWindowHint);
You don't want to set the MDI area itself as a frameless window, because it's a widget you likely have embedded in another window... it most likely already doesn't have a frame.
Your setting the 'subwindow' should work... but addSubWindow(myWidget) actually wraps the widget passed in in the real subwindow, so that's what was going wrong. Qt lets you pass in window flags as the second parameter of addSubWindow() and those flags go to the real subwindow.
Note that with a frameless window, you can't drag the window around to move it, or grab the edges to resize it, because there's nothing for you to grab onto!
If you just want the minimize and maximize buttons gone (but still want the close button), try passing Qt::Dialog instead.
Try also experimenting with these:
addSubWindow(new QLabel("Qt::Tool"), Qt::Tool);
addSubWindow(new QLabel("Qt::Tool|Qt::CustomizeWindowHint"), Qt::Tool|Qt::CustomizeWindowHint);
addSubWindow(new QLabel("Qt::Dialog"), Qt::Dialog);
I think Qt::Tool|Qt::CustomizeWindowHint is probably the best option (no buttons, but still movable and resizable - if you don't want it resizable, give it a fixed size (setFixedSize()).
Edit: Also try: Qt::CustomizeWindowHint|Qt::WindowTitleHint