Create a new widget, show it, and hide it behind another application. Is there a way to find out if the widget is visible to the user?
How can I add resizable widget开发者_StackOverflow中文版s in Qt Creator? Specially widgets in QVBoxLayout or QHBoxLayoutExample:
On QTreeView selection change, I would like to revert to the previous selection if a certain condition is not met.
I have a problem with QGLWidget. Actually, with the mouse actions, the QGLWidget will get updated. I have a requirement to open another window from this widget, for example with a double click event.
Looking at qwidget.h, I found the destructor as below: ~QWidget(); I was wondering why this is not开发者_如何学运维 declared as virtualThe destructor is virtual, because QWidget derives from QObjec
I\'m building a CAD-like application, when the viewport object selection changes a signal is emitted containing a QHash of the new objects.This signal is caught by it\'s document sub window which lift
I\'m pretty new to QT and I\'ve made my first custom QWidge开发者_如何学Ct subclass...it all works well, until I try adding some labels to it. They all get squashed into the top corner.
I would like to know if it is possible to override methods like paintEvent or mousePressEvent, for example, for widgets that were开发者_运维知识库n\'t created programmatically but in UI editor.There i
I\'m trying to accomplish the following with a Qt (C++) app, cross OS. Upon running the program a new window pops up, a fullscreen QWidget. Now I want this to be see-through/transparent, so the user w
I need to be able to copy a Qwidget so I can duplicate a window because it will change during runtime. is this possible?
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