有办法在QStatusBar上为QDockWidget设置按钮吗？

Question

from PyQt5 import QtWidgets
from PyQt5 import QtCore
import sys


class MyQStatusBar(QtWidgets.QStatusBar):
    def __init__(self, parent=None):
        super(MyQStatusBar, self).__init__(parent)
        self.horizontalLayout2 = QtWidgets.QHBoxLayout(self)
        self.horizontalLayout2.setContentsMargins(1, 1, 1, 1)


        self.toolButton = QtWidgets.QToolButton(self)
        self.toolButton.setMaximumSize(QtCore.QSize(12, 12))
        self.toolButton.setObjectName("toolButton")
        self.horizontalLayout2.addWidget(self.toolButton)

        self.toolButton_2 = QtWidgets.QToolButton(self)
        self.toolButton_2.setMaximumSize(QtCore.QSize(12, 12))
        self.toolButton_2.setIconSize(QtCore.QSize(12, 12))
        self.toolButton_2.setObjectName("toolButton_2")
        self.horizontalLayout2.addWidget(self.toolButton_2)


class MainUI(QtWidgets.QMainWindow):
    def __init__(self):
        super(MainUI, self).__init__()
        self.dock = QtWidgets.QDockWidget(self)
        bar = MyQStatusBar(self.dock)
        self.dock.setTitleBarWidget(bar)

if __name__ == "__main__":
    app = QtWidgets.QApplication(sys.argv)
    main = MainUI()
    main.show()
    sys.exit(app.exec_())

我想为QDockWidget向QStatusBar添加一些自定义的小按钮，我为QStatusBar创建了两个ToolButtons，addWidget()，但是只能显示一个，或者在QDockWidget上这样做不合适吗？

Answer 1

void QStatusBar::addPermanentWidget(QWidget *小部件，int拉伸= 0)

将给定的小部件永久添加到此状态栏，如果小部件不是此QStatusBar对象的子部件，则对其进行修复。拉伸参数用于在状态栏增长和缩小时计算给定小部件的适当大小。默认的拉伸因子是0，即给小部件一个最小的空间。

永久意味着小部件可能不会被临时消息所掩盖。它位于状态栏的最右边。

如果我对你的理解是正确的，那就试试这个：

import sys
from PyQt5 import QtWidgets, QtCore
from PyQt5.Qt import *


#class MyQStatusBar(QtWidgets.QStatusBar):                             # -
class MyQStatusBar(QtWidgets.QWidget):                                 # + QWidget
    def __init__(self):
        super(MyQStatusBar, self).__init__()
        self.horizontalLayout2 = QtWidgets.QHBoxLayout(self)
        self.horizontalLayout2.setContentsMargins(1, 1, 1, 1)
        self.horizontalLayout2.setObjectName("horizontalLayout_2")
        self.toolButton_2 = QtWidgets.QToolButton(self)
        sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Preferred, QtWidgets.QSizePolicy.Preferred)
        sizePolicy.setHorizontalStretch(0)
        sizePolicy.setVerticalStretch(0)
        sizePolicy.setHeightForWidth(self.toolButton_2.sizePolicy().hasHeightForWidth())
        self.toolButton_2.setSizePolicy(sizePolicy)
        self.toolButton_2.setMaximumSize(QtCore.QSize(12, 12))
        self.toolButton_2.setIconSize(QtCore.QSize(12, 12))
        self.toolButton_2.setObjectName("toolButton_2")
        self.horizontalLayout2.addWidget(self.toolButton_2)
        self.toolButton = QtWidgets.QToolButton(self)
        sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Preferred, QtWidgets.QSizePolicy.Preferred)
        sizePolicy.setHorizontalStretch(0)
        sizePolicy.setVerticalStretch(0)
        sizePolicy.setHeightForWidth(self.toolButton.sizePolicy().hasHeightForWidth())
        self.toolButton.setSizePolicy(sizePolicy)
        self.toolButton.setMaximumSize(QtCore.QSize(12, 12))
        self.toolButton.setObjectName("toolButton")
        self.horizontalLayout2.addWidget(self.toolButton)


class MainUI(QtWidgets.QMainWindow):
    def __init__(self):
        super(MainUI, self).__init__()
        self.center_text = QTextEdit("center_text")
        self.setCentralWidget(self.center_text)       

        self.dock = QtWidgets.QDockWidget('Dock Window 1', self)
        self.dock.setAllowedAreas(Qt.RightDockWidgetArea | Qt.LeftDockWidgetArea)
        self.dock.setFeatures(QDockWidget.DockWidgetMovable | QDockWidget.DockWidgetFloatable)
        self.addDockWidget(Qt.RightDockWidgetArea, self.dock)
        
        self.textEdit = QTextEdit("textEdit for Dock Window 1")
        self.bar = MyQStatusBar()
        self.status_bar = QStatusBar()
        self.status_bar.addPermanentWidget(self.bar)
        self.status_bar.setSizeGripEnabled(False)  
        self.status_bar.showMessage("Hello MyQStatusBar", msecs=7000)

        widget = QWidget()
        layout = QVBoxLayout(widget)
        layout.addWidget(self.textEdit)
        # layout.addStretch()
        layout.addWidget(self.status_bar)
        
        self.dock.setWidget(widget)


if __name__ == "__main__":
    app = QtWidgets.QApplication(sys.argv)
    main = MainUI()
    main.show()
    sys.exit(app.exec_())

​

​