Myujth

I have a QToolBar inside a QDockWidget and I am dynamically populating the toolbar with QToolButton instances.

This dock widget is on the right hand of the screen with others on the left. It starts up with a reasonable size but when I add more tool buttons than there is space for, the dock widget will expand as much as possible. I'd rather it keep the original size and have the tool buttons end up in the overflow area of the toolbar.

I've tried setting a fixed size constraint on the parent layout but this just results in the dock growing or shrinking as tool buttons are added or removed.

Any ideas?

I tried to make a GUI like Alan Spark's.

Under my circumstance,It didn't happend.

It is not beyond my thought,

but I doubt that QMainWindow.setWindowFlags(QtCore.Qt.WindowStaysOnTopHint) is related,

because I didn't install special Options at all except for it.

I can't find out the other special doubtful Options.

On the other thing,on my Special Occasion,

I don't have only a QMainWindow and its ToolBar()

This QMainWindow is on the QScrollArea and the layouted QStackedWidget.

QScrollArea is resized to (10000,50000)

For example:

word_stackedWidget = QtGui.QStackedWidget() 
word_sheetwidget = QtGui.QScrollArea()
word_sheetwidget.resize(10000,50000)
layout = QtGui.QVBoxLayout()
layout.addWidget(word_stackedWidget)
word_sheetwidget.setLayout(layout)
word = MyMainWindow()
word_stackedWidget.addWidget(word)
word_stackedWidget.setCurrentWidget(word)
dockwidget.setWidget(word_stackedWidget)

It is a little complicated,but I believe that the size of QDockWidget is subjective to the Contents.QScrollArea has a vast size , so it may be related with something.

Truely These were a tiny idea, I'm sorry! (but this is too much for comments.)

These attached Widgets (ScrollArea & StackedWidget) are very useful because you can look over all area of the Widgets and you can Change your favorite Widget without difficulty.

Probably, My answer will not help you.

Added

I investigated in QDockWidget's composition.
It has two QAbstractButton and two QLayout objects.
And It has one QObject and one QAction objects.

I made sure that two QAbstractButton are the floating-change button and the close-button.(because I try to setText() for them,they were deleted on the surface.)

After that, the doubtful thing is QLayout.

I tried to get the QLayout Children , but return None.

So at the default, QDockWidget has no layout widgets in itself.

But I think QLayout has a method for setSizeConstraint and has an great influence on QDockWidget.

Perhaps you can also view this point.

1.You get the QDockWidget's chidren() (from QObject method)

2.You stream it as sequence,and get the layout() object.

3.You try to make the layout set QLayoutSize.

4.You see the result.

For example, I tried to set setFixedSize.
After that, I couldn't move the dockwidget and resize it.

I also Think it may be meaningful if you add new widget for this dockwidget.
So this will also not be good solution.But for the notice,I wanted to write this result.

Added

If you use setFixedSize,You can subclass the QDockWidget and overwrite subclass.

QLayout.SetFixedSize The main widget’s size is set to PySide.QtGui.QLayoutItem.sizeHint() ; it cannot be resized at all.

I saw you tried to change the widgetsize flag to fixedSize so it would do good probably.