在pyqt中使用scrollarea问题？

时间：2012-03-20 03:23:19

标签： python qt4 pyqt

这是我使用qt-designer生成的文件。

from PyQt4 import QtCore, QtGui

try:
    _fromUtf8 = QtCore.QString.fromUtf8
except AttributeError:
    _fromUtf8 = lambda s: s

class Ui_Dialog(object):
    def setupUi(self, Dialog):
        Dialog.setObjectName(_fromUtf8("Dialog"))
        Dialog.resize(1024, 600)
        sizePolicy = QtGui.QSizePolicy(QtGui.QSizePolicy.Fixed, QtGui.QSizePolicy.Fixed)
        sizePolicy.setHorizontalStretch(0)
        sizePolicy.setVerticalStretch(0)
        sizePolicy.setHeightForWidth(Dialog.sizePolicy().hasHeightForWidth())
        Dialog.setSizePolicy(sizePolicy)
        Dialog.setWindowTitle(QtGui.QApplication.translate("Dialog", "Dialog", None, QtGui.QApplication.UnicodeUTF8))
        self.gridLayout = QtGui.QGridLayout(Dialog)
        self.gridLayout.setObjectName(_fromUtf8("gridLayout"))
        self.verticalLayout = QtGui.QVBoxLayout()
        self.verticalLayout.setObjectName(_fromUtf8("verticalLayout"))
        self.graphicsView = QtGui.QGraphicsView(Dialog)
        sizePolicy = QtGui.QSizePolicy(QtGui.QSizePolicy.Expanding, QtGui.QSizePolicy.Fixed)
        sizePolicy.setHorizontalStretch(0)
        sizePolicy.setVerticalStretch(0)
        sizePolicy.setHeightForWidth(self.graphicsView.sizePolicy().hasHeightForWidth())
        self.graphicsView.setSizePolicy(sizePolicy)
        self.graphicsView.setVerticalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOff)
        self.graphicsView.setHorizontalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOff)
        self.graphicsView.setObjectName(_fromUtf8("graphicsView"))
        self.verticalLayout.addWidget(self.graphicsView)
        self.gridLayout.addLayout(self.verticalLayout, 0, 0, 1, 4)
        self.verticalLayout_2 = QtGui.QVBoxLayout()
        self.verticalLayout_2.setObjectName(_fromUtf8("verticalLayout_2"))
        self.pushButton = QtGui.QPushButton(Dialog)
        self.pushButton.setText(QtGui.QApplication.translate("Dialog", "Add", None, QtGui.QApplication.UnicodeUTF8))
        self.pushButton.setObjectName(_fromUtf8("pushButton"))
        self.verticalLayout_2.addWidget(self.pushButton)
        self.gridLayout.addLayout(self.verticalLayout_2, 1, 0, 1, 1)
        self.verticalLayout_4 = QtGui.QVBoxLayout()
        self.verticalLayout_4.setObjectName(_fromUtf8("verticalLayout_4"))
        self.pushButton_2 = QtGui.QPushButton(Dialog)
        self.pushButton_2.setText(QtGui.QApplication.translate("Dialog", "Delete", None, QtGui.QApplication.UnicodeUTF8))
        self.pushButton_2.setObjectName(_fromUtf8("pushButton_2"))
        self.verticalLayout_4.addWidget(self.pushButton_2)
        self.gridLayout.addLayout(self.verticalLayout_4, 1, 1, 1, 1)
        self.verticalLayout_5 = QtGui.QVBoxLayout()
        self.verticalLayout_5.setObjectName(_fromUtf8("verticalLayout_5"))
        self.pushButton_3 = QtGui.QPushButton(Dialog)
        self.pushButton_3.setText(QtGui.QApplication.translate("Dialog", "Edit", None, QtGui.QApplication.UnicodeUTF8))
        self.pushButton_3.setObjectName(_fromUtf8("pushButton_3"))
        self.verticalLayout_5.addWidget(self.pushButton_3)
        self.gridLayout.addLayout(self.verticalLayout_5, 1, 2, 1, 1)
        self.verticalLayout_3 = QtGui.QVBoxLayout()
        self.verticalLayout_3.setObjectName(_fromUtf8("verticalLayout_3"))
        self.label = QtGui.QLabel(Dialog)
        self.label.setText(QtGui.QApplication.translate("Dialog", "Connected", None, QtGui.QApplication.UnicodeUTF8))
        self.label.setObjectName(_fromUtf8("label"))
        self.verticalLayout_3.addWidget(self.label)
        self.gridLayout.addLayout(self.verticalLayout_3, 1, 3, 1, 1)
        self.horizontalLayout = QtGui.QHBoxLayout()
        self.horizontalLayout.setObjectName(_fromUtf8("horizontalLayout"))
        self.tableWidget = QtGui.QTableWidget(Dialog)
        self.tableWidget.setObjectName(_fromUtf8("tableWidget"))
        self.tableWidget.setColumnCount(0)
        self.tableWidget.setRowCount(0)
        self.horizontalLayout.addWidget(self.tableWidget)
        self.gridLayout.addLayout(self.horizontalLayout, 2, 0, 1, 3)
        self.horizontalLayout_2 = QtGui.QHBoxLayout()
        self.horizontalLayout_2.setObjectName(_fromUtf8("horizontalLayout_2"))
        self.tabWidget = QtGui.QTabWidget(Dialog)
        self.tabWidget.setObjectName(_fromUtf8("tabWidget"))
        self.tab = QtGui.QWidget()
        self.tab.setObjectName(_fromUtf8("tab"))
        self.verticalLayout_6 = QtGui.QVBoxLayout(self.tab)
        self.verticalLayout_6.setObjectName(_fromUtf8("verticalLayout_6"))
        self.scrollArea = QtGui.QScrollArea(self.tab)
        self.scrollArea.setWidgetResizable(True)
        self.scrollArea.setObjectName(_fromUtf8("scrollArea"))
        self.scrollAreaWidgetContents = QtGui.QWidget(self.scrollArea)
        self.scrollAreaWidgetContents.setGeometry(QtCore.QRect(0, 0, 701, 292))
        self.scrollAreaWidgetContents.setObjectName(_fromUtf8("scrollAreaWidgetContents"))
        self.verticalLayout_7 = QtGui.QVBoxLayout(self.scrollAreaWidgetContents)
        self.verticalLayout_7.setObjectName(_fromUtf8("verticalLayout_7"))
        self.dockWidget = QtGui.QDockWidget(self.scrollAreaWidgetContents)
        self.dockWidget.setObjectName(_fromUtf8("dockWidget"))
        self.dockWidgetContents = QtGui.QWidget()
        self.dockWidgetContents.setObjectName(_fromUtf8("dockWidgetContents"))
        self.verticalLayout_8 = QtGui.QVBoxLayout(self.dockWidgetContents)
        self.verticalLayout_8.setObjectName(_fromUtf8("verticalLayout_8"))
        self.plainTextEdit = QtGui.QPlainTextEdit(self.dockWidgetContents)
        sizePolicy = QtGui.QSizePolicy(QtGui.QSizePolicy.Ignored, QtGui.QSizePolicy.Ignored)
        sizePolicy.setHorizontalStretch(0)
        sizePolicy.setVerticalStretch(0)
        sizePolicy.setHeightForWidth(self.plainTextEdit.sizePolicy().hasHeightForWidth())
        self.plainTextEdit.setSizePolicy(sizePolicy)
        self.plainTextEdit.setObjectName(_fromUtf8("plainTextEdit"))
        self.verticalLayout_8.addWidget(self.plainTextEdit)
        self.dockWidget.setWidget(self.dockWidgetContents)
        self.verticalLayout_7.addWidget(self.dockWidget)


        self.dockWidget_2 = QtGui.QDockWidget(self.scrollAreaWidgetContents)
        self.dockWidget_2.setObjectName(_fromUtf8("dockWidget_2"))
        self.dockWidgetContents_2 = QtGui.QWidget()
        self.dockWidgetContents_2.setObjectName(_fromUtf8("dockWidgetContents_2"))
        self.verticalLayout_9 = QtGui.QVBoxLayout(self.dockWidgetContents_2)
        self.verticalLayout_9.setObjectName(_fromUtf8("verticalLayout_9"))
        self.plainTextEdit_2 = QtGui.QPlainTextEdit(self.dockWidgetContents_2)
        sizePolicy = QtGui.QSizePolicy(QtGui.QSizePolicy.Ignored, QtGui.QSizePolicy.Ignored)
        sizePolicy.setHorizontalStretch(0)
        sizePolicy.setVerticalStretch(0)
        sizePolicy.setHeightForWidth(self.plainTextEdit_2.sizePolicy().hasHeightForWidth())
        self.plainTextEdit_2.setSizePolicy(sizePolicy)
        self.plainTextEdit_2.setObjectName(_fromUtf8("plainTextEdit_2"))
        self.verticalLayout_9.addWidget(self.plainTextEdit_2)
        self.dockWidget_2.setWidget(self.dockWidgetContents_2)
        self.verticalLayout_7.addWidget(self.dockWidget_2)


    self.dockWidget_3 = QtGui.QDockWidget(self.scrollAreaWidgetContents)
        self.dockWidget_3.setObjectName(_fromUtf8("dockWidget_3"))
        self.dockWidgetContents_3 = QtGui.QWidget()
        self.dockWidgetContents_3.setObjectName(_fromUtf8("dockWidgetContents_3"))
        self.verticalLayout_10 = QtGui.QVBoxLayout(self.dockWidgetContents_3)
        self.verticalLayout_10.setObjectName(_fromUtf8("verticalLayout_10"))
        self.plainTextEdit_3 = QtGui.QPlainTextEdit(self.dockWidgetContents_3)
        sizePolicy = QtGui.QSizePolicy(QtGui.QSizePolicy.Ignored, QtGui.QSizePolicy.Ignored)
        sizePolicy.setHorizontalStretch(0)
        sizePolicy.setVerticalStretch(0)
        sizePolicy.setHeightForWidth(self.plainTextEdit_3.sizePolicy().hasHeightForWidth())
        self.plainTextEdit_3.setSizePolicy(sizePolicy)
        self.plainTextEdit_3.setObjectName(_fromUtf8("plainTextEdit_3"))
        self.verticalLayout_10.addWidget(self.plainTextEdit_3)
        self.dockWidget_3.setWidget(self.dockWidgetContents_3)
        self.verticalLayout_7.addWidget(self.dockWidget_3)    

        self.scrollArea.setWidget(self.scrollAreaWidgetContents)
        self.verticalLayout_6.addWidget(self.scrollArea)
        self.tabWidget.addTab(self.tab, _fromUtf8(""))
        self.tab_2 = QtGui.QWidget()
        self.tab_2.setObjectName(_fromUtf8("tab_2"))
        self.tabWidget.addTab(self.tab_2, _fromUtf8(""))
        self.horizontalLayout_2.addWidget(self.tabWidget)
        self.gridLayout.addLayout(self.horizontalLayout_2, 2, 3, 1, 1)

        self.retranslateUi(Dialog)
        QtCore.QMetaObject.connectSlotsByName(Dialog)

    def retranslateUi(self, Dialog):
        self.tabWidget.setTabText(self.tabWidget.indexOf(self.tab), QtGui.QApplication.translate("Dialog", "Tab 1", None, QtGui.QApplication.UnicodeUTF8))
        self.tabWidget.setTabText(self.tabWidget.indexOf(self.tab_2), QtGui.QApplication.translate("Dialog", "Tab 2", None, QtGui.QApplication.UnicodeUTF8))


if __name__ == "__main__":
    import sys
    app = QtGui.QApplication(sys.argv)
    Dialog = QtGui.QDialog()
    ui = Ui_Dialog()
    ui.setupUi(Dialog)
    Dialog.show()
    sys.exit(app.exec_())

输出在屏幕截图中：问题是Tab1没有显示任何滚动条，即使我在scrollArea下设置了布局。我期待滚动条的区域以红色矩形显示。            

1 个答案:

答案 0 :(得分：3)

我记得这个类似的问题:-) How to associate a horizontal scrollbar to multiple groupbox.?

你仍然没有得到正确的滚动条的原因是因为你在滚动区域内的小部件没有最小高度，并且被允许收缩得足够远，以至于它们永远不会强制滚动区显示其滚动条。

在代码中，您可以通过以下方式解决此问题：

self.dockWidgetContents.setMinimumHeight(100)

尽管如此，您不应该对从Qt Designer生成的此文件进行任何直接编辑。您应该做的是进入QtDesigner，选择小部件，并在其属性列表的顶部，为它们设置最小高度。

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