如何在取消停靠后调整几何图形后触发 QTreeView 的更新
How to Trigger an update of the QTreeView after adjusting the Geometry after undocking
使用： Python 3.7 pyqt5 Windows10
取消停靠时，我将主 window 的大小调整为没有 DockWindow 时的大小，但这样做时右侧的两列消失了。我尝试了各种事件来尝试触发对该 TreeView 的调整，但无济于事。我包含的代码有问题，只需单击其中一个 Docks，然后将结果 window 从 Main Window 中分离出来，您就会明白我的意思。一如既往，我们将不胜感激。
我试过以下方法：
self.updateGeometry()
self.CenterPane.updateGeometry()
self.CenterPane.ItemDsply.updateGeometry()
self.resizeEvent(QResizeEvent(self.size(), QSize()))
self.CenterPane.resizeEvent(QResizeEvent(self.size(), QSize()))
self.CenterPane.ItemDsply.resizeEvent(QResizeEvent(self.size(), QSize()))
这是一个工作示例：
from sys import exit as sysExit
from math import trunc
from PyQt5.QtCore import *
from PyQt5.QtGui import *
from PyQt5.QtWidgets import *
class CustomItemModel(QStandardItemModel):
def headerData(self, section, orientation, role):
if role == Qt.ForegroundRole:
brush = QBrush()
brush.setColor(Qt.blue)
brush.setStyle(Qt.SolidPattern)
return brush
elif role == Qt.BackgroundRole:
brush = QBrush()
brush.setColor(Qt.yellow)
brush.setStyle(Qt.SolidPattern)
return brush
elif role == Qt.FontRole:
font = QFont()
font.setBold(True)
font.setPointSize(10)
return font
return super().headerData(section, orientation, role)
class DockWin1(QDockWidget):
def __init__(self, parent):
QDockWidget.__init__(self)
self.setWindowTitle('Dock 1')
self.MainWin = parent
self.container = QWidget(self)
self.container.setLayout(QHBoxLayout())
self.setWidget(self.container)
self.container.layout().addWidget(QTextEdit())
self.setMinimumWidth(100)
self.setMinimumHeight(100)
self.topLevelChanged.connect(self.SetDock1Free)
@property
def MainWin(self):
return self.__parent
@MainWin.setter
def MainWin(self, value):
self.__parent = value
def closeEvent(self, event):
self.MainWin.ClosingDock1()
def SetDock1Free(self):
if self.MainWin.Dock1Free:
self.MainWin.CheckToResize('Dock1', 100)
else:
self.MainWin.CheckToResize('Dock1', self.width())
self.MainWin.Dock1Free = not self.MainWin.Dock1Free
class DockWin2(QDockWidget):
def __init__(self, parent):
QDockWidget.__init__(self)
self.setWindowTitle('Dock 2')
self.MainWin = parent
self.container = QWidget(self)
self.container.setLayout(QHBoxLayout())
self.setWidget(self.container)
self.container.layout().addWidget(QTextEdit())
self.setMinimumWidth(100)
self.setMinimumHeight(100)
self.topLevelChanged.connect(self.SetDock2Free)
@property
def MainWin(self):
return self.__parent
@MainWin.setter
def MainWin(self, value):
self.__parent = value
def closeEvent(self, event):
self.MainWin.ClosingDock2()
def SetDock2Free(self):
if self.MainWin.Dock2Free:
self.MainWin.CheckToResize('Dock2', 100)
else:
self.MainWin.CheckToResize('Dock2', self.width())
self.MainWin.Dock2Free = not self.MainWin.Dock2Free
class ItemDsplyr(QTreeView):
def __init__(self, CentrPane):
QTreeView.__init__(self, CentrPane)
self.CntrPane = CentrPane
self.setEditTriggers(QTreeView().NoEditTriggers)
self.model = CustomItemModel(0, 3)
self.model.setHorizontalHeaderLabels(['1st Col', '2nd Col', '3rd Col'])
self.model.setHeaderData(1, Qt.Horizontal, Qt.AlignCenter, Qt.TextAlignmentRole)
self.setModel(self.model)
self.setMinimumWidth(250)
self.header().setStretchLastSection(False)
self.header().setSectionResizeMode(0, QHeaderView.Stretch)
self.setColumnWidth(1, 75)
self.setColumnWidth(2, 100)
class CenterPanel(QWidget):
def __init__(self, MainWin):
QWidget.__init__(self)
self.MyEditor = QTextEdit('Editorial')
self.ItemDsply = ItemDsplyr(self)
CntrPane = QSplitter(Qt.Horizontal, self)
CntrPane.addWidget(self.MyEditor)
CntrPane.addWidget(self.ItemDsply)
CntrPane.setSizes([50,200])
CntrPane.setCollapsible(0, False)
CntrPane.setCollapsible(1, False)
hbox = QHBoxLayout(self)
hbox.addWidget(CntrPane)
self.setLayout(hbox)
class MenuToolBar(QDockWidget):
def __init__(self, MainWin):
QDockWidget.__init__(self)
self.MainWin = MainWin
self.MainMenu = MainWin.menuBar()
self.WndowMenu = self.MainMenu.addMenu('Windows')
self.Dock1Act = QAction('Dock1', self)
self.Dock1Act.setStatusTip('Open the Dock1 Window')
self.Dock1Act.triggered.connect(MainWin.ShowDock1)
self.Dock2Act = QAction('Dock2', self)
self.Dock2Act.setStatusTip('Open the Dock2 Window')
self.Dock2Act.triggered.connect(MainWin.ShowDock2)
self.WndowMenu.addAction(self.Dock1Act)
self.WndowMenu.addSeparator()
self.WndowMenu.addAction(self.Dock2Act)
self.InitToolBar(MainWin)
def InitToolBar(self, MainWin):
self.mainToolBar = MainWin.addToolBar("Quick Access")
self.mainToolBar.addAction(self.Dock1Act)
self.mainToolBar.addSeparator()
self.mainToolBar.addAction(self.Dock2Act)
class UI_MainWindow(QMainWindow):
def __init__(self, MainDesktop):
super(UI_MainWindow, self).__init__(MainDesktop)
self.setWindowTitle('Main Window')
self.Dock1Open = False
self.Dock1Free = False
self.Dock2Open = False
self.Dock2Free = False
self.MnDskTop = MainDesktop
# Left, Top, Width, Height
self.setGeometry(200, 200, 550, 550)
self.CenterPane = CenterPanel(self)
self.setCentralWidget(self.CenterPane)
self.MenuToolBar = MenuToolBar(self)
def ShowDock1(self):
if not self.Dock1Open:
self.CheckToResize('Dock1', 300)
self.Dock1 = DockWin1(self)
self.Dock1Open = True
self.Dock1Free = False
self.addDockWidget(Qt.RightDockWidgetArea, self.Dock1)
def ClosingDock1(self):
self.Dock1Open = False
def ShowDock2(self):
if not self.Dock2Open:
self.CheckToResize('Dock2', 300)
self.Dock2 = DockWin2(self)
self.Dock2Open = True
self.Dock2Free = False
self.addDockWidget(Qt.RightDockWidgetArea, self.Dock2)
def ClosingDock2(self):
self.Dock2Open = False
def CheckToResize(self, WinDocked, DockWdth):
# If any of the other docks are open and docked do not resize
if self.Dock1Open and WinDocked != 'Dock1' and not self.Dock1Free:
return
elif self.Dock2Open and WinDocked != 'Dock2' and not self.Dock2Free:
return
Docking = True
if WinDocked == 'Dock1' and self.Dock1Open != self.Dock1Free:
Docking = False
elif WinDocked == 'Dock2' and self.Dock2Open != self.Dock2Free:
Docking = False
WinLeft = self.geometry().left()
WinTop = self.geometry().top()
WinWidth = self.geometry().width()
WinHight = self.geometry().height()
ScrWidth = self.MnDskTop.screenGeometry().width()
# Docking
if Docking:
if ScrWidth < (WinLeft + WinWidth + DockWdth):
WinLeft = 0
WinWidth = ScrWidth
elif WinLeft > (trunc(DockWdth/2)):
WinLeft = WinLeft - trunc(DockWdth/2)
WinWidth = WinWidth + DockWdth
else:
WinLeft = 0
WinWidth = WinWidth + DockWdth
self.setGeometry(WinLeft, WinTop, WinWidth, WinHight)
# Un-Docking
else:
WinWidth = WinWidth - DockWdth
self.setGeometry(WinLeft, WinTop, WinWidth, WinHight)
# Call the Event that Triggers View Adjustment ??
self.CenterPane.ItemDsply.updateGeometry()
# self.CenterPane.ItemDsply.resizeEvent(QResizeEvent(self.size(), QSize()))
if __name__ == '__main__':
MainApp = QApplication([])
MainGui = UI_MainWindow(MainApp.desktop())
MainGui.show()
sysExit(MainApp.exec_())
如前所述，我正在尝试让 QTreeView 适当调整以适应新大小 window，以便它显示所有三列。目前它将最后一列推到视图之外。
请求的图片：（查看评论）
void QHeaderView::setSectionResizeMode(int logicalIndex, QHeaderView::ResizeMode mode)
Sets the constraints on how the section specified by logicalIndex in the header can be resized to those described by the given mode. The logical index should exist at the time this function is called.
from sys import exit as sysExit
from math import trunc
from PyQt5.QtCore import *
from PyQt5.QtGui import *
from PyQt5.QtWidgets import *
class CustomItemModel(QStandardItemModel):
def headerData(self, section, orientation, role):
if role == Qt.ForegroundRole:
brush = QBrush()
brush.setColor(Qt.blue)
brush.setStyle(Qt.SolidPattern)
return brush
elif role == Qt.BackgroundRole:
brush = QBrush()
brush.setColor(Qt.yellow)
brush.setStyle(Qt.SolidPattern)
return brush
elif role == Qt.FontRole:
font = QFont()
font.setBold(True)
font.setPointSize(10)
return font
return super().headerData(section, orientation, role)
class DockWin1(QDockWidget):
def __init__(self, parent):
QDockWidget.__init__(self)
self.setWindowTitle('Dock 1')
self.MainWin = parent
self.container = QWidget(self)
self.container.setLayout(QHBoxLayout())
self.setWidget(self.container)
self.container.layout().addWidget(QTextEdit())
self.setMinimumWidth(100)
self.setMinimumHeight(100)
self.topLevelChanged.connect(self.SetDock1Free)
@property
def MainWin(self):
return self.__parent
@MainWin.setter
def MainWin(self, value):
self.__parent = value
def closeEvent(self, event):
self.MainWin.ClosingDock1()
def SetDock1Free(self):
if self.MainWin.Dock1Free:
self.MainWin.CheckToResize('Dock1', 100)
else:
self.MainWin.CheckToResize('Dock1', self.width())
self.MainWin.Dock1Free = not self.MainWin.Dock1Free
class DockWin2(QDockWidget):
def __init__(self, parent):
QDockWidget.__init__(self)
self.setWindowTitle('Dock 2')
self.MainWin = parent
self.container = QWidget(self)
self.container.setLayout(QHBoxLayout())
self.setWidget(self.container)
self.container.layout().addWidget(QTextEdit())
self.setMinimumWidth(100)
self.setMinimumHeight(100)
self.topLevelChanged.connect(self.SetDock2Free)
@property
def MainWin(self):
return self.__parent
@MainWin.setter
def MainWin(self, value):
self.__parent = value
def closeEvent(self, event):
self.MainWin.ClosingDock2()
def SetDock2Free(self):
if self.MainWin.Dock2Free:
self.MainWin.CheckToResize('Dock2', 100)
else:
self.MainWin.CheckToResize('Dock2', self.width())
self.MainWin.Dock2Free = not self.MainWin.Dock2Free
class ItemDsplyr(QTreeView):
def __init__(self, CentrPane):
QTreeView.__init__(self, CentrPane)
self.CntrPane = CentrPane
self.setEditTriggers(QTreeView().NoEditTriggers)
self.model = CustomItemModel(0, 3)
self.model.setHorizontalHeaderLabels(['1st Col', '2nd Col', '3rd Col'])
self.model.setHeaderData(1, Qt.Horizontal, Qt.AlignCenter, Qt.TextAlignmentRole)
self.setModel(self.model)
self.setMinimumWidth(250)
self.header().setStretchLastSection(False)
self.header().setSectionResizeMode(2, QHeaderView.Stretch) # <---------
self.setColumnWidth(1, 75)
self.setColumnWidth(2, 100)
class CenterPanel(QWidget):
def __init__(self, MainWin):
QWidget.__init__(self)
self.MyEditor = QTextEdit('Editorial')
self.ItemDsply = ItemDsplyr(self)
CntrPane = QSplitter(Qt.Horizontal, self)
CntrPane.addWidget(self.MyEditor)
CntrPane.addWidget(self.ItemDsply)
CntrPane.setSizes([50,200])
CntrPane.setCollapsible(0, False)
CntrPane.setCollapsible(1, False)
hbox = QHBoxLayout(self)
hbox.addWidget(CntrPane)
self.setLayout(hbox)
class MenuToolBar(QDockWidget):
def __init__(self, MainWin):
QDockWidget.__init__(self)
self.MainWin = MainWin
self.MainMenu = MainWin.menuBar()
self.WndowMenu = self.MainMenu.addMenu('Windows')
self.Dock1Act = QAction('Dock1', self)
self.Dock1Act.setStatusTip('Open the Dock1 Window')
self.Dock1Act.triggered.connect(MainWin.ShowDock1)
self.Dock2Act = QAction('Dock2', self)
self.Dock2Act.setStatusTip('Open the Dock2 Window')
self.Dock2Act.triggered.connect(MainWin.ShowDock2)
self.WndowMenu.addAction(self.Dock1Act)
self.WndowMenu.addSeparator()
self.WndowMenu.addAction(self.Dock2Act)
self.InitToolBar(MainWin)
def InitToolBar(self, MainWin):
self.mainToolBar = MainWin.addToolBar("Quick Access")
self.mainToolBar.addAction(self.Dock1Act)
self.mainToolBar.addSeparator()
self.mainToolBar.addAction(self.Dock2Act)
class UI_MainWindow(QMainWindow):
def __init__(self, MainDesktop):
super(UI_MainWindow, self).__init__(MainDesktop)
self.setWindowTitle('Main Window')
self.Dock1Open = False
self.Dock1Free = False
self.Dock2Open = False
self.Dock2Free = False
self.MnDskTop = MainDesktop
print(f"MainDesktop->{MainDesktop}")
# Left, Top, Width, Height
self.setGeometry(200, 100, 550, 550)
self.CenterPane = CenterPanel(self)
self.setCentralWidget(self.CenterPane)
self.MenuToolBar = MenuToolBar(self)
def ShowDock1(self):
if not self.Dock1Open:
self.CheckToResize('Dock1', 300)
self.Dock1 = DockWin1(self)
self.Dock1Open = True
self.Dock1Free = False
self.addDockWidget(Qt.RightDockWidgetArea, self.Dock1)
def ClosingDock1(self):
self.Dock1Open = False
def ShowDock2(self):
if not self.Dock2Open:
self.CheckToResize('Dock2', 300)
self.Dock2 = DockWin2(self)
self.Dock2Open = True
self.Dock2Free = False
self.addDockWidget(Qt.RightDockWidgetArea, self.Dock2)
def ClosingDock2(self):
self.Dock2Open = False
def CheckToResize(self, WinDocked, DockWdth):
# If any of the other docks are open and docked do not resize
if self.Dock1Open and WinDocked != 'Dock1' and not self.Dock1Free:
return
elif self.Dock2Open and WinDocked != 'Dock2' and not self.Dock2Free:
return
Docking = True
if WinDocked == 'Dock1' and self.Dock1Open != self.Dock1Free:
Docking = False
elif WinDocked == 'Dock2' and self.Dock2Open != self.Dock2Free:
Docking = False
WinLeft = self.geometry().left()
WinTop = self.geometry().top()
WinWidth = self.geometry().width()
WinHight = self.geometry().height()
ScrWidth = self.MnDskTop.screenGeometry().width()
# Docking
if Docking:
if ScrWidth < (WinLeft + WinWidth + DockWdth):
WinLeft = 0
WinWidth = ScrWidth
elif WinLeft > (trunc(DockWdth/2)):
WinLeft = WinLeft - trunc(DockWdth/2)
WinWidth = WinWidth + DockWdth
else:
WinLeft = 0
WinWidth = WinWidth + DockWdth
self.setGeometry(WinLeft, WinTop, WinWidth, WinHight)
# Un-Docking
else:
WinWidth = WinWidth - DockWdth
self.setGeometry(WinLeft, WinTop, WinWidth, WinHight)
# Call the Event that Triggers View Adjustment ??
self.CenterPane.ItemDsply.updateGeometry()
# self.CenterPane.ItemDsply.resizeEvent(QResizeEvent(self.size(), QSize()))
if __name__ == '__main__':
MainApp = QApplication([])
MainGui = UI_MainWindow(MainApp.desktop())
MainGui.show()
sysExit(MainApp.exec_())
更新
sizeAdjustPolicy : SizeAdjustPolicy
This property holds the policy describing how the size of the scroll area changes when the size of the viewport changes.
from sys import exit as sysExit
from math import trunc
from PyQt5.QtCore import *
from PyQt5.QtGui import *
from PyQt5.QtWidgets import *
class CustomItemModel(QStandardItemModel):
def headerData(self, section, orientation, role):
if role == Qt.ForegroundRole:
brush = QBrush()
brush.setColor(Qt.blue)
brush.setStyle(Qt.SolidPattern)
return brush
elif role == Qt.BackgroundRole:
brush = QBrush()
brush.setColor(Qt.yellow)
brush.setStyle(Qt.SolidPattern)
return brush
elif role == Qt.FontRole:
font = QFont()
font.setBold(True)
font.setPointSize(10)
return font
return super().headerData(section, orientation, role)
class DockWin1(QDockWidget):
def __init__(self, parent):
QDockWidget.__init__(self)
self.setWindowTitle('Dock 1')
self.MainWin = parent
self.container = QWidget(self)
self.container.setLayout(QHBoxLayout())
self.setWidget(self.container)
self.container.layout().addWidget(QTextEdit())
self.setMinimumWidth(100)
self.setMinimumHeight(100)
self.topLevelChanged.connect(self.SetDock1Free)
@property
def MainWin(self):
return self.__parent
@MainWin.setter
def MainWin(self, value):
self.__parent = value
def closeEvent(self, event):
self.MainWin.ClosingDock1()
def SetDock1Free(self):
if self.MainWin.Dock1Free:
self.MainWin.CheckToResize('Dock1', 100)
else:
self.MainWin.CheckToResize('Dock1', self.width())
self.MainWin.Dock1Free = not self.MainWin.Dock1Free
class DockWin2(QDockWidget):
def __init__(self, parent):
QDockWidget.__init__(self)
self.setWindowTitle('Dock 2')
self.MainWin = parent
self.container = QWidget(self)
self.container.setLayout(QHBoxLayout())
self.setWidget(self.container)
self.container.layout().addWidget(QTextEdit())
self.setMinimumWidth(100)
self.setMinimumHeight(100)
self.topLevelChanged.connect(self.SetDock2Free)
@property
def MainWin(self):
return self.__parent
@MainWin.setter
def MainWin(self, value):
self.__parent = value
def closeEvent(self, event):
self.MainWin.ClosingDock2()
def SetDock2Free(self):
if self.MainWin.Dock2Free:
self.MainWin.CheckToResize('Dock2', 100)
else:
self.MainWin.CheckToResize('Dock2', self.width())
self.MainWin.Dock2Free = not self.MainWin.Dock2Free
class ItemDsplyr(QTreeView):
def __init__(self, CentrPane):
QTreeView.__init__(self, CentrPane)
self.CntrPane = CentrPane
self.setEditTriggers(QTreeView().NoEditTriggers)
self.model = CustomItemModel(0, 3)
self.model.setHorizontalHeaderLabels(['1st Col', '2nd Col', '3rd Col'])
self.model.setHeaderData(1, Qt.Horizontal, Qt.AlignCenter, Qt.TextAlignmentRole)
self.setModel(self.model)
self.setMinimumWidth(250)
self.setSizeAdjustPolicy(QAbstractScrollArea.AdjustToContents) # <<<========
self.header().setStretchLastSection(False)
self.header().setSectionResizeMode(0, QHeaderView.Stretch)
self.setColumnWidth(1, 75)
self.setColumnWidth(2, 100)
class CenterPanel(QWidget):
def __init__(self, MainWin):
QWidget.__init__(self)
self.MyEditor = QTextEdit('Editorial')
self.ItemDsply = ItemDsplyr(self)
CntrPane = QSplitter(Qt.Horizontal, self)
CntrPane.addWidget(self.MyEditor)
CntrPane.addWidget(self.ItemDsply)
CntrPane.setSizes([50,200])
CntrPane.setCollapsible(0, False)
CntrPane.setCollapsible(1, False)
hbox = QHBoxLayout(self)
hbox.addWidget(CntrPane)
self.setLayout(hbox)
class MenuToolBar(QDockWidget):
def __init__(self, MainWin):
QDockWidget.__init__(self)
self.MainWin = MainWin
self.MainMenu = MainWin.menuBar()
self.WndowMenu = self.MainMenu.addMenu('Windows')
self.Dock1Act = QAction('Dock1', self)
self.Dock1Act.setStatusTip('Open the Dock1 Window')
self.Dock1Act.triggered.connect(MainWin.ShowDock1)
self.Dock2Act = QAction('Dock2', self)
self.Dock2Act.setStatusTip('Open the Dock2 Window')
self.Dock2Act.triggered.connect(MainWin.ShowDock2)
self.WndowMenu.addAction(self.Dock1Act)
self.WndowMenu.addSeparator()
self.WndowMenu.addAction(self.Dock2Act)
self.InitToolBar(MainWin)
def InitToolBar(self, MainWin):
self.mainToolBar = MainWin.addToolBar("Quick Access")
self.mainToolBar.addAction(self.Dock1Act)
self.mainToolBar.addSeparator()
self.mainToolBar.addAction(self.Dock2Act)
class UI_MainWindow(QMainWindow):
def __init__(self, MainDesktop):
super(UI_MainWindow, self).__init__(MainDesktop)
self.setWindowTitle('Main Window')
self.Dock1Open = False
self.Dock1Free = False
self.Dock2Open = False
self.Dock2Free = False
self.MnDskTop = MainDesktop
# print(f"MainDesktop->{MainDesktop}")
# Left, Top, Width, Height
self.setGeometry(200, 100, 550, 550)
self.CenterPane = CenterPanel(self)
self.setCentralWidget(self.CenterPane)
self.MenuToolBar = MenuToolBar(self)
def ShowDock1(self):
if not self.Dock1Open:
self.CheckToResize('Dock1', 300)
self.Dock1 = DockWin1(self)
self.Dock1Open = True
self.Dock1Free = False
self.addDockWidget(Qt.RightDockWidgetArea, self.Dock1)
def ClosingDock1(self):
self.Dock1Open = False
def ShowDock2(self):
if not self.Dock2Open:
self.CheckToResize('Dock2', 300)
self.Dock2 = DockWin2(self)
self.Dock2Open = True
self.Dock2Free = False
self.addDockWidget(Qt.RightDockWidgetArea, self.Dock2)
def ClosingDock2(self):
self.Dock2Open = False
def CheckToResize(self, WinDocked, DockWdth):
# If any of the other docks are open and docked do not resize
if self.Dock1Open and WinDocked != 'Dock1' and not self.Dock1Free:
return
elif self.Dock2Open and WinDocked != 'Dock2' and not self.Dock2Free:
return
Docking = True
if WinDocked == 'Dock1' and self.Dock1Open != self.Dock1Free:
Docking = False
elif WinDocked == 'Dock2' and self.Dock2Open != self.Dock2Free:
Docking = False
WinLeft = self.geometry().left()
WinTop = self.geometry().top()
WinWidth = self.geometry().width()
WinHight = self.geometry().height()
ScrWidth = self.MnDskTop.screenGeometry().width()
# Docking
if Docking:
if ScrWidth < (WinLeft + WinWidth + DockWdth):
WinLeft = 0
WinWidth = ScrWidth
elif WinLeft > (trunc(DockWdth/2)):
WinLeft = WinLeft - trunc(DockWdth/2)
WinWidth = WinWidth + DockWdth
else:
WinLeft = 0
WinWidth = WinWidth + DockWdth
self.setGeometry(WinLeft, WinTop, WinWidth, WinHight)
# Un-Docking
else:
WinWidth = WinWidth - DockWdth
self.setGeometry(WinLeft, WinTop, WinWidth, WinHight)
# Call the Event that Triggers View Adjustment ??
self.CenterPane.ItemDsply.updateGeometry()
# self.CenterPane.ItemDsply.resizeEvent(QResizeEvent(self.size(), QSize()))
if __name__ == '__main__':
MainApp = QApplication([])
MainGui = UI_MainWindow(MainApp.desktop())
MainGui.show()
sysExit(MainApp.exec_())
好吧，它最终实际上是@S 的组合。尼克说（上）
self.setSizeAdjustPolicy(QAbstractScrollArea.AdjustToContents)
需要添加到 ItemDsplyr class
然而，仍然需要一些东西来触发调整大小，因为当使用 setGeometry() 时 Dock Window 分离时它并不总是触发，所以我用 resize() 替换了 setGeometry() 如下：
WinWidth = WinWidth - DockWdth
self.resize(WinWidth, WinHight)
请注意，如果我需要在取消停靠时重新定位 window，那么我只需要调用 setGeometry()，然后调用 resize()，因为看起来 resize() 是触发重绘功能的原因
使用： Python 3.7 pyqt5 Windows10
取消停靠时，我将主 window 的大小调整为没有 DockWindow 时的大小，但这样做时右侧的两列消失了。我尝试了各种事件来尝试触发对该 TreeView 的调整，但无济于事。我包含的代码有问题，只需单击其中一个 Docks，然后将结果 window 从 Main Window 中分离出来，您就会明白我的意思。一如既往，我们将不胜感激。
我试过以下方法：
self.updateGeometry()
self.CenterPane.updateGeometry()
self.CenterPane.ItemDsply.updateGeometry()
self.resizeEvent(QResizeEvent(self.size(), QSize()))
self.CenterPane.resizeEvent(QResizeEvent(self.size(), QSize()))
self.CenterPane.ItemDsply.resizeEvent(QResizeEvent(self.size(), QSize()))
这是一个工作示例：
from sys import exit as sysExit
from math import trunc
from PyQt5.QtCore import *
from PyQt5.QtGui import *
from PyQt5.QtWidgets import *
class CustomItemModel(QStandardItemModel):
def headerData(self, section, orientation, role):
if role == Qt.ForegroundRole:
brush = QBrush()
brush.setColor(Qt.blue)
brush.setStyle(Qt.SolidPattern)
return brush
elif role == Qt.BackgroundRole:
brush = QBrush()
brush.setColor(Qt.yellow)
brush.setStyle(Qt.SolidPattern)
return brush
elif role == Qt.FontRole:
font = QFont()
font.setBold(True)
font.setPointSize(10)
return font
return super().headerData(section, orientation, role)
class DockWin1(QDockWidget):
def __init__(self, parent):
QDockWidget.__init__(self)
self.setWindowTitle('Dock 1')
self.MainWin = parent
self.container = QWidget(self)
self.container.setLayout(QHBoxLayout())
self.setWidget(self.container)
self.container.layout().addWidget(QTextEdit())
self.setMinimumWidth(100)
self.setMinimumHeight(100)
self.topLevelChanged.connect(self.SetDock1Free)
@property
def MainWin(self):
return self.__parent
@MainWin.setter
def MainWin(self, value):
self.__parent = value
def closeEvent(self, event):
self.MainWin.ClosingDock1()
def SetDock1Free(self):
if self.MainWin.Dock1Free:
self.MainWin.CheckToResize('Dock1', 100)
else:
self.MainWin.CheckToResize('Dock1', self.width())
self.MainWin.Dock1Free = not self.MainWin.Dock1Free
class DockWin2(QDockWidget):
def __init__(self, parent):
QDockWidget.__init__(self)
self.setWindowTitle('Dock 2')
self.MainWin = parent
self.container = QWidget(self)
self.container.setLayout(QHBoxLayout())
self.setWidget(self.container)
self.container.layout().addWidget(QTextEdit())
self.setMinimumWidth(100)
self.setMinimumHeight(100)
self.topLevelChanged.connect(self.SetDock2Free)
@property
def MainWin(self):
return self.__parent
@MainWin.setter
def MainWin(self, value):
self.__parent = value
def closeEvent(self, event):
self.MainWin.ClosingDock2()
def SetDock2Free(self):
if self.MainWin.Dock2Free:
self.MainWin.CheckToResize('Dock2', 100)
else:
self.MainWin.CheckToResize('Dock2', self.width())
self.MainWin.Dock2Free = not self.MainWin.Dock2Free
class ItemDsplyr(QTreeView):
def __init__(self, CentrPane):
QTreeView.__init__(self, CentrPane)
self.CntrPane = CentrPane
self.setEditTriggers(QTreeView().NoEditTriggers)
self.model = CustomItemModel(0, 3)
self.model.setHorizontalHeaderLabels(['1st Col', '2nd Col', '3rd Col'])
self.model.setHeaderData(1, Qt.Horizontal, Qt.AlignCenter, Qt.TextAlignmentRole)
self.setModel(self.model)
self.setMinimumWidth(250)
self.header().setStretchLastSection(False)
self.header().setSectionResizeMode(0, QHeaderView.Stretch)
self.setColumnWidth(1, 75)
self.setColumnWidth(2, 100)
class CenterPanel(QWidget):
def __init__(self, MainWin):
QWidget.__init__(self)
self.MyEditor = QTextEdit('Editorial')
self.ItemDsply = ItemDsplyr(self)
CntrPane = QSplitter(Qt.Horizontal, self)
CntrPane.addWidget(self.MyEditor)
CntrPane.addWidget(self.ItemDsply)
CntrPane.setSizes([50,200])
CntrPane.setCollapsible(0, False)
CntrPane.setCollapsible(1, False)
hbox = QHBoxLayout(self)
hbox.addWidget(CntrPane)
self.setLayout(hbox)
class MenuToolBar(QDockWidget):
def __init__(self, MainWin):
QDockWidget.__init__(self)
self.MainWin = MainWin
self.MainMenu = MainWin.menuBar()
self.WndowMenu = self.MainMenu.addMenu('Windows')
self.Dock1Act = QAction('Dock1', self)
self.Dock1Act.setStatusTip('Open the Dock1 Window')
self.Dock1Act.triggered.connect(MainWin.ShowDock1)
self.Dock2Act = QAction('Dock2', self)
self.Dock2Act.setStatusTip('Open the Dock2 Window')
self.Dock2Act.triggered.connect(MainWin.ShowDock2)
self.WndowMenu.addAction(self.Dock1Act)
self.WndowMenu.addSeparator()
self.WndowMenu.addAction(self.Dock2Act)
self.InitToolBar(MainWin)
def InitToolBar(self, MainWin):
self.mainToolBar = MainWin.addToolBar("Quick Access")
self.mainToolBar.addAction(self.Dock1Act)
self.mainToolBar.addSeparator()
self.mainToolBar.addAction(self.Dock2Act)
class UI_MainWindow(QMainWindow):
def __init__(self, MainDesktop):
super(UI_MainWindow, self).__init__(MainDesktop)
self.setWindowTitle('Main Window')
self.Dock1Open = False
self.Dock1Free = False
self.Dock2Open = False
self.Dock2Free = False
self.MnDskTop = MainDesktop
# Left, Top, Width, Height
self.setGeometry(200, 200, 550, 550)
self.CenterPane = CenterPanel(self)
self.setCentralWidget(self.CenterPane)
self.MenuToolBar = MenuToolBar(self)
def ShowDock1(self):
if not self.Dock1Open:
self.CheckToResize('Dock1', 300)
self.Dock1 = DockWin1(self)
self.Dock1Open = True
self.Dock1Free = False
self.addDockWidget(Qt.RightDockWidgetArea, self.Dock1)
def ClosingDock1(self):
self.Dock1Open = False
def ShowDock2(self):
if not self.Dock2Open:
self.CheckToResize('Dock2', 300)
self.Dock2 = DockWin2(self)
self.Dock2Open = True
self.Dock2Free = False
self.addDockWidget(Qt.RightDockWidgetArea, self.Dock2)
def ClosingDock2(self):
self.Dock2Open = False
def CheckToResize(self, WinDocked, DockWdth):
# If any of the other docks are open and docked do not resize
if self.Dock1Open and WinDocked != 'Dock1' and not self.Dock1Free:
return
elif self.Dock2Open and WinDocked != 'Dock2' and not self.Dock2Free:
return
Docking = True
if WinDocked == 'Dock1' and self.Dock1Open != self.Dock1Free:
Docking = False
elif WinDocked == 'Dock2' and self.Dock2Open != self.Dock2Free:
Docking = False
WinLeft = self.geometry().left()
WinTop = self.geometry().top()
WinWidth = self.geometry().width()
WinHight = self.geometry().height()
ScrWidth = self.MnDskTop.screenGeometry().width()
# Docking
if Docking:
if ScrWidth < (WinLeft + WinWidth + DockWdth):
WinLeft = 0
WinWidth = ScrWidth
elif WinLeft > (trunc(DockWdth/2)):
WinLeft = WinLeft - trunc(DockWdth/2)
WinWidth = WinWidth + DockWdth
else:
WinLeft = 0
WinWidth = WinWidth + DockWdth
self.setGeometry(WinLeft, WinTop, WinWidth, WinHight)
# Un-Docking
else:
WinWidth = WinWidth - DockWdth
self.setGeometry(WinLeft, WinTop, WinWidth, WinHight)
# Call the Event that Triggers View Adjustment ??
self.CenterPane.ItemDsply.updateGeometry()
# self.CenterPane.ItemDsply.resizeEvent(QResizeEvent(self.size(), QSize()))
if __name__ == '__main__':
MainApp = QApplication([])
MainGui = UI_MainWindow(MainApp.desktop())
MainGui.show()
sysExit(MainApp.exec_())
如前所述，我正在尝试让 QTreeView 适当调整以适应新大小 window，以便它显示所有三列。目前它将最后一列推到视图之外。
请求的图片：（查看评论）
void QHeaderView::setSectionResizeMode(int logicalIndex, QHeaderView::ResizeMode mode)
Sets the constraints on how the section specified by logicalIndex in the header can be resized to those described by the given mode. The logical index should exist at the time this function is called.
from sys import exit as sysExit
from math import trunc
from PyQt5.QtCore import *
from PyQt5.QtGui import *
from PyQt5.QtWidgets import *
class CustomItemModel(QStandardItemModel):
def headerData(self, section, orientation, role):
if role == Qt.ForegroundRole:
brush = QBrush()
brush.setColor(Qt.blue)
brush.setStyle(Qt.SolidPattern)
return brush
elif role == Qt.BackgroundRole:
brush = QBrush()
brush.setColor(Qt.yellow)
brush.setStyle(Qt.SolidPattern)
return brush
elif role == Qt.FontRole:
font = QFont()
font.setBold(True)
font.setPointSize(10)
return font
return super().headerData(section, orientation, role)
class DockWin1(QDockWidget):
def __init__(self, parent):
QDockWidget.__init__(self)
self.setWindowTitle('Dock 1')
self.MainWin = parent
self.container = QWidget(self)
self.container.setLayout(QHBoxLayout())
self.setWidget(self.container)
self.container.layout().addWidget(QTextEdit())
self.setMinimumWidth(100)
self.setMinimumHeight(100)
self.topLevelChanged.connect(self.SetDock1Free)
@property
def MainWin(self):
return self.__parent
@MainWin.setter
def MainWin(self, value):
self.__parent = value
def closeEvent(self, event):
self.MainWin.ClosingDock1()
def SetDock1Free(self):
if self.MainWin.Dock1Free:
self.MainWin.CheckToResize('Dock1', 100)
else:
self.MainWin.CheckToResize('Dock1', self.width())
self.MainWin.Dock1Free = not self.MainWin.Dock1Free
class DockWin2(QDockWidget):
def __init__(self, parent):
QDockWidget.__init__(self)
self.setWindowTitle('Dock 2')
self.MainWin = parent
self.container = QWidget(self)
self.container.setLayout(QHBoxLayout())
self.setWidget(self.container)
self.container.layout().addWidget(QTextEdit())
self.setMinimumWidth(100)
self.setMinimumHeight(100)
self.topLevelChanged.connect(self.SetDock2Free)
@property
def MainWin(self):
return self.__parent
@MainWin.setter
def MainWin(self, value):
self.__parent = value
def closeEvent(self, event):
self.MainWin.ClosingDock2()
def SetDock2Free(self):
if self.MainWin.Dock2Free:
self.MainWin.CheckToResize('Dock2', 100)
else:
self.MainWin.CheckToResize('Dock2', self.width())
self.MainWin.Dock2Free = not self.MainWin.Dock2Free
class ItemDsplyr(QTreeView):
def __init__(self, CentrPane):
QTreeView.__init__(self, CentrPane)
self.CntrPane = CentrPane
self.setEditTriggers(QTreeView().NoEditTriggers)
self.model = CustomItemModel(0, 3)
self.model.setHorizontalHeaderLabels(['1st Col', '2nd Col', '3rd Col'])
self.model.setHeaderData(1, Qt.Horizontal, Qt.AlignCenter, Qt.TextAlignmentRole)
self.setModel(self.model)
self.setMinimumWidth(250)
self.header().setStretchLastSection(False)
self.header().setSectionResizeMode(2, QHeaderView.Stretch) # <---------
self.setColumnWidth(1, 75)
self.setColumnWidth(2, 100)
class CenterPanel(QWidget):
def __init__(self, MainWin):
QWidget.__init__(self)
self.MyEditor = QTextEdit('Editorial')
self.ItemDsply = ItemDsplyr(self)
CntrPane = QSplitter(Qt.Horizontal, self)
CntrPane.addWidget(self.MyEditor)
CntrPane.addWidget(self.ItemDsply)
CntrPane.setSizes([50,200])
CntrPane.setCollapsible(0, False)
CntrPane.setCollapsible(1, False)
hbox = QHBoxLayout(self)
hbox.addWidget(CntrPane)
self.setLayout(hbox)
class MenuToolBar(QDockWidget):
def __init__(self, MainWin):
QDockWidget.__init__(self)
self.MainWin = MainWin
self.MainMenu = MainWin.menuBar()
self.WndowMenu = self.MainMenu.addMenu('Windows')
self.Dock1Act = QAction('Dock1', self)
self.Dock1Act.setStatusTip('Open the Dock1 Window')
self.Dock1Act.triggered.connect(MainWin.ShowDock1)
self.Dock2Act = QAction('Dock2', self)
self.Dock2Act.setStatusTip('Open the Dock2 Window')
self.Dock2Act.triggered.connect(MainWin.ShowDock2)
self.WndowMenu.addAction(self.Dock1Act)
self.WndowMenu.addSeparator()
self.WndowMenu.addAction(self.Dock2Act)
self.InitToolBar(MainWin)
def InitToolBar(self, MainWin):
self.mainToolBar = MainWin.addToolBar("Quick Access")
self.mainToolBar.addAction(self.Dock1Act)
self.mainToolBar.addSeparator()
self.mainToolBar.addAction(self.Dock2Act)
class UI_MainWindow(QMainWindow):
def __init__(self, MainDesktop):
super(UI_MainWindow, self).__init__(MainDesktop)
self.setWindowTitle('Main Window')
self.Dock1Open = False
self.Dock1Free = False
self.Dock2Open = False
self.Dock2Free = False
self.MnDskTop = MainDesktop
print(f"MainDesktop->{MainDesktop}")
# Left, Top, Width, Height
self.setGeometry(200, 100, 550, 550)
self.CenterPane = CenterPanel(self)
self.setCentralWidget(self.CenterPane)
self.MenuToolBar = MenuToolBar(self)
def ShowDock1(self):
if not self.Dock1Open:
self.CheckToResize('Dock1', 300)
self.Dock1 = DockWin1(self)
self.Dock1Open = True
self.Dock1Free = False
self.addDockWidget(Qt.RightDockWidgetArea, self.Dock1)
def ClosingDock1(self):
self.Dock1Open = False
def ShowDock2(self):
if not self.Dock2Open:
self.CheckToResize('Dock2', 300)
self.Dock2 = DockWin2(self)
self.Dock2Open = True
self.Dock2Free = False
self.addDockWidget(Qt.RightDockWidgetArea, self.Dock2)
def ClosingDock2(self):
self.Dock2Open = False
def CheckToResize(self, WinDocked, DockWdth):
# If any of the other docks are open and docked do not resize
if self.Dock1Open and WinDocked != 'Dock1' and not self.Dock1Free:
return
elif self.Dock2Open and WinDocked != 'Dock2' and not self.Dock2Free:
return
Docking = True
if WinDocked == 'Dock1' and self.Dock1Open != self.Dock1Free:
Docking = False
elif WinDocked == 'Dock2' and self.Dock2Open != self.Dock2Free:
Docking = False
WinLeft = self.geometry().left()
WinTop = self.geometry().top()
WinWidth = self.geometry().width()
WinHight = self.geometry().height()
ScrWidth = self.MnDskTop.screenGeometry().width()
# Docking
if Docking:
if ScrWidth < (WinLeft + WinWidth + DockWdth):
WinLeft = 0
WinWidth = ScrWidth
elif WinLeft > (trunc(DockWdth/2)):
WinLeft = WinLeft - trunc(DockWdth/2)
WinWidth = WinWidth + DockWdth
else:
WinLeft = 0
WinWidth = WinWidth + DockWdth
self.setGeometry(WinLeft, WinTop, WinWidth, WinHight)
# Un-Docking
else:
WinWidth = WinWidth - DockWdth
self.setGeometry(WinLeft, WinTop, WinWidth, WinHight)
# Call the Event that Triggers View Adjustment ??
self.CenterPane.ItemDsply.updateGeometry()
# self.CenterPane.ItemDsply.resizeEvent(QResizeEvent(self.size(), QSize()))
if __name__ == '__main__':
MainApp = QApplication([])
MainGui = UI_MainWindow(MainApp.desktop())
MainGui.show()
sysExit(MainApp.exec_())
更新
sizeAdjustPolicy : SizeAdjustPolicy
This property holds the policy describing how the size of the scroll area changes when the size of the viewport changes.
from sys import exit as sysExit
from math import trunc
from PyQt5.QtCore import *
from PyQt5.QtGui import *
from PyQt5.QtWidgets import *
class CustomItemModel(QStandardItemModel):
def headerData(self, section, orientation, role):
if role == Qt.ForegroundRole:
brush = QBrush()
brush.setColor(Qt.blue)
brush.setStyle(Qt.SolidPattern)
return brush
elif role == Qt.BackgroundRole:
brush = QBrush()
brush.setColor(Qt.yellow)
brush.setStyle(Qt.SolidPattern)
return brush
elif role == Qt.FontRole:
font = QFont()
font.setBold(True)
font.setPointSize(10)
return font
return super().headerData(section, orientation, role)
class DockWin1(QDockWidget):
def __init__(self, parent):
QDockWidget.__init__(self)
self.setWindowTitle('Dock 1')
self.MainWin = parent
self.container = QWidget(self)
self.container.setLayout(QHBoxLayout())
self.setWidget(self.container)
self.container.layout().addWidget(QTextEdit())
self.setMinimumWidth(100)
self.setMinimumHeight(100)
self.topLevelChanged.connect(self.SetDock1Free)
@property
def MainWin(self):
return self.__parent
@MainWin.setter
def MainWin(self, value):
self.__parent = value
def closeEvent(self, event):
self.MainWin.ClosingDock1()
def SetDock1Free(self):
if self.MainWin.Dock1Free:
self.MainWin.CheckToResize('Dock1', 100)
else:
self.MainWin.CheckToResize('Dock1', self.width())
self.MainWin.Dock1Free = not self.MainWin.Dock1Free
class DockWin2(QDockWidget):
def __init__(self, parent):
QDockWidget.__init__(self)
self.setWindowTitle('Dock 2')
self.MainWin = parent
self.container = QWidget(self)
self.container.setLayout(QHBoxLayout())
self.setWidget(self.container)
self.container.layout().addWidget(QTextEdit())
self.setMinimumWidth(100)
self.setMinimumHeight(100)
self.topLevelChanged.connect(self.SetDock2Free)
@property
def MainWin(self):
return self.__parent
@MainWin.setter
def MainWin(self, value):
self.__parent = value
def closeEvent(self, event):
self.MainWin.ClosingDock2()
def SetDock2Free(self):
if self.MainWin.Dock2Free:
self.MainWin.CheckToResize('Dock2', 100)
else:
self.MainWin.CheckToResize('Dock2', self.width())
self.MainWin.Dock2Free = not self.MainWin.Dock2Free
class ItemDsplyr(QTreeView):
def __init__(self, CentrPane):
QTreeView.__init__(self, CentrPane)
self.CntrPane = CentrPane
self.setEditTriggers(QTreeView().NoEditTriggers)
self.model = CustomItemModel(0, 3)
self.model.setHorizontalHeaderLabels(['1st Col', '2nd Col', '3rd Col'])
self.model.setHeaderData(1, Qt.Horizontal, Qt.AlignCenter, Qt.TextAlignmentRole)
self.setModel(self.model)
self.setMinimumWidth(250)
self.setSizeAdjustPolicy(QAbstractScrollArea.AdjustToContents) # <<<========
self.header().setStretchLastSection(False)
self.header().setSectionResizeMode(0, QHeaderView.Stretch)
self.setColumnWidth(1, 75)
self.setColumnWidth(2, 100)
class CenterPanel(QWidget):
def __init__(self, MainWin):
QWidget.__init__(self)
self.MyEditor = QTextEdit('Editorial')
self.ItemDsply = ItemDsplyr(self)
CntrPane = QSplitter(Qt.Horizontal, self)
CntrPane.addWidget(self.MyEditor)
CntrPane.addWidget(self.ItemDsply)
CntrPane.setSizes([50,200])
CntrPane.setCollapsible(0, False)
CntrPane.setCollapsible(1, False)
hbox = QHBoxLayout(self)
hbox.addWidget(CntrPane)
self.setLayout(hbox)
class MenuToolBar(QDockWidget):
def __init__(self, MainWin):
QDockWidget.__init__(self)
self.MainWin = MainWin
self.MainMenu = MainWin.menuBar()
self.WndowMenu = self.MainMenu.addMenu('Windows')
self.Dock1Act = QAction('Dock1', self)
self.Dock1Act.setStatusTip('Open the Dock1 Window')
self.Dock1Act.triggered.connect(MainWin.ShowDock1)
self.Dock2Act = QAction('Dock2', self)
self.Dock2Act.setStatusTip('Open the Dock2 Window')
self.Dock2Act.triggered.connect(MainWin.ShowDock2)
self.WndowMenu.addAction(self.Dock1Act)
self.WndowMenu.addSeparator()
self.WndowMenu.addAction(self.Dock2Act)
self.InitToolBar(MainWin)
def InitToolBar(self, MainWin):
self.mainToolBar = MainWin.addToolBar("Quick Access")
self.mainToolBar.addAction(self.Dock1Act)
self.mainToolBar.addSeparator()
self.mainToolBar.addAction(self.Dock2Act)
class UI_MainWindow(QMainWindow):
def __init__(self, MainDesktop):
super(UI_MainWindow, self).__init__(MainDesktop)
self.setWindowTitle('Main Window')
self.Dock1Open = False
self.Dock1Free = False
self.Dock2Open = False
self.Dock2Free = False
self.MnDskTop = MainDesktop
# print(f"MainDesktop->{MainDesktop}")
# Left, Top, Width, Height
self.setGeometry(200, 100, 550, 550)
self.CenterPane = CenterPanel(self)
self.setCentralWidget(self.CenterPane)
self.MenuToolBar = MenuToolBar(self)
def ShowDock1(self):
if not self.Dock1Open:
self.CheckToResize('Dock1', 300)
self.Dock1 = DockWin1(self)
self.Dock1Open = True
self.Dock1Free = False
self.addDockWidget(Qt.RightDockWidgetArea, self.Dock1)
def ClosingDock1(self):
self.Dock1Open = False
def ShowDock2(self):
if not self.Dock2Open:
self.CheckToResize('Dock2', 300)
self.Dock2 = DockWin2(self)
self.Dock2Open = True
self.Dock2Free = False
self.addDockWidget(Qt.RightDockWidgetArea, self.Dock2)
def ClosingDock2(self):
self.Dock2Open = False
def CheckToResize(self, WinDocked, DockWdth):
# If any of the other docks are open and docked do not resize
if self.Dock1Open and WinDocked != 'Dock1' and not self.Dock1Free:
return
elif self.Dock2Open and WinDocked != 'Dock2' and not self.Dock2Free:
return
Docking = True
if WinDocked == 'Dock1' and self.Dock1Open != self.Dock1Free:
Docking = False
elif WinDocked == 'Dock2' and self.Dock2Open != self.Dock2Free:
Docking = False
WinLeft = self.geometry().left()
WinTop = self.geometry().top()
WinWidth = self.geometry().width()
WinHight = self.geometry().height()
ScrWidth = self.MnDskTop.screenGeometry().width()
# Docking
if Docking:
if ScrWidth < (WinLeft + WinWidth + DockWdth):
WinLeft = 0
WinWidth = ScrWidth
elif WinLeft > (trunc(DockWdth/2)):
WinLeft = WinLeft - trunc(DockWdth/2)
WinWidth = WinWidth + DockWdth
else:
WinLeft = 0
WinWidth = WinWidth + DockWdth
self.setGeometry(WinLeft, WinTop, WinWidth, WinHight)
# Un-Docking
else:
WinWidth = WinWidth - DockWdth
self.setGeometry(WinLeft, WinTop, WinWidth, WinHight)
# Call the Event that Triggers View Adjustment ??
self.CenterPane.ItemDsply.updateGeometry()
# self.CenterPane.ItemDsply.resizeEvent(QResizeEvent(self.size(), QSize()))
if __name__ == '__main__':
MainApp = QApplication([])
MainGui = UI_MainWindow(MainApp.desktop())
MainGui.show()
sysExit(MainApp.exec_())
好吧，它最终实际上是@S 的组合。尼克说（上）
self.setSizeAdjustPolicy(QAbstractScrollArea.AdjustToContents)
需要添加到 ItemDsplyr class
然而，仍然需要一些东西来触发调整大小，因为当使用 setGeometry() 时 Dock Window 分离时它并不总是触发，所以我用 resize() 替换了 setGeometry() 如下：
WinWidth = WinWidth - DockWdth
self.resize(WinWidth, WinHight)
请注意，如果我需要在取消停靠时重新定位 window，那么我只需要调用 setGeometry()，然后调用 resize()，因为看起来 resize() 是触发重绘功能的原因