PyQt QScrollArea不滚动 [英] PyQt QScrollArea not scrolling

问题描述

我想将UI的某些元素放在滚动区域中，因为其中可能有很多元素.我尝试了以下代码，但是随着我在上面添加了更多元素，该领域一直在增长.

I want to put some elements of my UI in a scroll area as there can be a lot of them. I tried the following peice of code, but the area just keeps growing as I put more elements on it.

在第一部分中，我设置了一个滚动区域，一个小部件和一个布局.我将布局应用于窗口小部件，并将窗口小部件设置为滚动区域.然后，我在外部函数中填写布局.所有按钮下方的按钮允许在布局中填充更多元素.

In the first part I set up a scroll area, a widget and a layout. I apply the layout to the widget and I set the widget to the scrollarea. Then I fill in my layout in an external function. The button under all of it allows to fill more elements in the layout.

    scrollRow = QtGui.QScrollArea()
    scrollRow.setMaximumSize(600, 400)
    self.rowAssetWidget = QtGui.QWidget()
    self.rowAssetLayout = QtGui.QGridLayout()
    self.rowAssetLayout.setSpacing(20)
    self.rowAssetWidget.setLayout(self.rowAssetLayout)
    scrollRow.setWidget(self.rowAssetWidget)
    #self.mainLayout.addLayout(self.rowAssetLayout, 2, 0)
    self.mainLayout.addWidget(self.rowAssetWidget, 2, 0)
    self.assetRow()

    self.addAssetRowBtn = QtGui.QPushButton("+")
    self.addAssetRowBtn.setFixedSize(20, 20)
    self.mainLayout.addWidget(self.addAssetRowBtn, 3, 0)
    self.connect(self.addAssetRowBtn, QtCore.SIGNAL("clicked()"), self.addAssetRow)

我的元素看起来不错，但是没有滚动.有什么主意吗?

My elements appear fine, but it is not scrolling. Any idea ?

推荐答案

import sys
from PyQt4 import QtGui,QtCore
class LayoutTest(QtGui.QWidget):
    def __init__(self):
        super(LayoutTest, self).__init__()
        self.horizontalLayout = QtGui.QVBoxLayout(self)
        self.scrollArea = QtGui.QScrollArea(self)
        self.scrollArea.setWidgetResizable(True)
        self.scrollAreaWidgetContents = QtGui.QWidget()
        self.scrollAreaWidgetContents.setGeometry(QtCore.QRect(0, 0, 380, 280))
        self.horizontalLayout_2 = QtGui.QHBoxLayout(self.scrollAreaWidgetContents)
        self.gridLayout = QtGui.QGridLayout()
        self.horizontalLayout_2.addLayout(self.gridLayout)
        self.scrollArea.setWidget(self.scrollAreaWidgetContents)
        self.add_button = QtGui.QPushButton("Add Items")
        self.horizontalLayout.addWidget(self.scrollArea)
        self.horizontalLayout.addWidget(self.add_button)
        self.connect(self.add_button, QtCore.SIGNAL("clicked()"), self.addButtons)
        self.setGeometry(300, 200, 400, 300)

    def addButtons(self):
        for i in range(0, 50):
            self.r_button = QtGui.QPushButton("Button %s " % i)
            self.gridLayout.addWidget(self.r_button)
def run():

    app = QtGui.QApplication(sys.argv)
    ex = LayoutTest()
    ex.show()
    sys.exit(app.exec_())

if __name__ == "__main__":
    run()

我知道回答这个问题为时已晚，但这是一个有效的示例，您错过了父级布局.

I know its too late to answer for this question, but here is a working example and you missing the parent layout.

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