Python PyQt QScrollArea 和 QGridLayout（或其他？）

Question

我正在尝试创建一个对话框，里面有一个堆叠布局，包含了一个网格布局（里面是复选框）和一个水平布局。其实我已经做到了。但是我的网格布局变得很大（水平布局没问题），现在我想加一个滚动区域，这样就不会占用太多空间。我试过以下代码……它确实生成了一个滚动视图，但这个滚动视图的大小却和水平布局中的第一个按钮一样小。我希望这个滚动视图的宽度能和对话框的宽度一致，通常这应该是水平布局的最小宽度。此外，添加滚动视图和滚动视图小部件时，出现了一个QLayout异常，提示“布局已经有一个父级”。有没有什么好的建议呢？

class checkboxDialog(QtGui.QDialog) : 

def __init__(self, headers, name) :
    super(checkboxDialog, self).__init__()

    self.checkerLayout = QtGui.QVBoxLayout()
    self.checkerLayout.setMargin(1)
    self.checkerLayout.setSpacing(2)

    self.scroll_view = QtGui.QScrollArea(self)
    self.scroll_view.setWidgetResizable(True)

    self.scroll_viewWidget = QtGui.QWidget()
    self.scroll_viewWidget.setGeometry(QtCore.QRect(0, 0, 600, 400))
    self.scroll_view.setWidget(self.scroll_viewWidget)        

    self.checkerHlayout = QtGui.QHBoxLayout(self.scroll_viewWidget)

    checksLayout = QtGui.QGridLayout()
    checksLayout.setColumnStretch(90,7)
    checksLayout.setMargin(1)
    checksLayout.setSpacing(2)      
    self.cbList = []
    index  = 0
    for row_index in range(90):
        for column_index in range(7):
            if index > len(headers)-1 : break
            checkbox = QtGui.QCheckBox(headers[index][0:8], self)
            checkbox.setToolTip("Chanel = {}".format(headers[index]))
            self.cbList.append(checkbox)
            # Hide the Phase channels for now ... not sure I shoudl even build the CheckBoxes
            # But if I dont then the len(cbList) < len(data[0])
            if headers[index][-1] == 'p' :
                checkbox.hide()
            checksLayout.addWidget(checkbox, row_index, column_index)
            index += 1

    self.checkerHlayout.addLayout(checksLayout)

    self.buttonLayout = QtGui.QHBoxLayout()
    self.buttonLayout.setMargin(1)
    self.buttonLayout.setSpacing(2)

    applyButton = QtGui.QPushButton("Apply")
    nextButton = QtGui.QPushButton("Next")
    nextAllButton = QtGui.QPushButton("NextAll")
    prevButton = QtGui.QPushButton("Prev")
    prevAllButton = QtGui.QPushButton("PrevAll")
    clearButton = QtGui.QPushButton("Clear")

    self.buttonLayout.addWidget(applyButton)        
    self.buttonLayout.addWidget(nextButton)
    self.buttonLayout.addWidget(nextAllButton)
    self.buttonLayout.addWidget(prevButton)
    self.buttonLayout.addWidget(prevAllButton)
    self.buttonLayout.addWidget(clearButton)

    self.checkerLayout.addLayout(self.checkerHlayout)
    self.checkerLayout.addLayout(self.buttonLayout)
    self.setLayout(self.checkerLayout)

    self.setObjectName(name)
    self.setWindowTitle(name)

    self.connect(applyButton, QtCore.SIGNAL('clicked()'), self.checked)
    self.connect(nextButton, QtCore.SIGNAL('clicked()'), self.next_chn)
    self.connect(nextAllButton, QtCore.SIGNAL('clicked()'), self.next_chnAll)
    self.connect(prevButton, QtCore.SIGNAL('clicked()'), self.prev_chn)
    self.connect(prevAllButton, QtCore.SIGNAL('clicked()'), self.prev_chnAll)
    self.connect(clearButton, QtCore.SIGNAL('clicked()'), self.clear_chn)

qt user interface design qscrollarea layout management qgridlayout dialog design widget resizing scrollable area

Python PyQt QScrollArea 和 QGridLayout（或其他？）

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