I have an app with a lot of QDockWidgets and without central widget. I want to set some of those QDockWidgets initial size (size at application's start), but I don't want to limit their min/max sizes.
How to do it? For example, I need to set initial size 150x75 to one of them. I tried obvious methods (such as QWidget.Resize() relating to dock widget content), but it didn't work at all.
Here is a simplified model of situation:
from PyQt4 import QtCore, QtGui
app = QtGui.QApplication([''])
mw = QtGui.QMainWindow() # mw = MainWindow
mw.setCentralWidget(None)
mw.showMaximized()
mw.dockWdg1 = QtGui.QDockWidget(mw)
mw.content1 = QtGui.QTreeWidget()
mw.dockWdg1.setWidget(mw.content1)
mw.addDockWidget(QtCore.Qt.DockWidgetArea(2), mw.dockWdg1)
mw.dockWdg1.setWindowTitle("1st dock widget")
mw.dockWdg2 = QtGui.QDockWidget(mw)
mw.content2 = QtGui.QTreeWidget()
mw.dockWdg2.setWidget(mw.content2)
mw.addDockWidget(QtCore.Qt.DockWidgetArea(1), mw.dockWdg2)
mw.dockWdg2.setWindowTitle("2nd dock widget")
mw.dockWdg3 = QtGui.QDockWidget(mw)
mw.content3 = QtGui.QTreeWidget()
mw.dockWdg3.setWidget(mw.content3)
mw.addDockWidget(QtCore.Qt.DockWidgetArea(1), mw.dockWdg3)
mw.dockWdg3.setWindowTitle("3rd dock widget")
mw.show()
app.exec_()
The dockwidgets will be incorporated into the layout of the main window, so any attempt to resize them will be ignored.
The standard workaround for this is to create a subclass of the content widget and reimplement its sizeHint:
class TreeWidget(QtGui.QTreeWidget):
def sizeHint(self):
return QtCore.QSize(150, 75)
mw.dockWdg2 = QtGui.QDockWidget(mw)
mw.content2 = TreeWidget()
mw.dockWdg2.setWidget(mw.content2)
However, this will only work to the extent that you also carefully manage the sizes of the other dockwidgets. And of course maximiizing the main window is also going to have a impact on the final outcome.
You might also want to consider using QMainWindow.saveState and QMainWindow.restoreState to manage the initial state of your dockwidgets.