PyQt:LineEdit小部件在FormLayout内的位置 [英] PyQt: LineEdit widget's placement inside of FormLayout

问题描述

使用.addRow()方法将 QtGui.QLineEdit line_edit小部件放置在 QtGui.QFormLayout 表单布局中.

A QtGui.QLineEdit line_edit widget is placed inside of QtGui.QFormLayout Form layout using .addRow() method.

my_formLayout.addRow(my_label, my_lineEdit) 

要使line_edit小部件粘贴到对话框窗口的边缘(以便随对话框调整大小)，请尝试使用sizePolicy:

To make a line_edit widget to stick to a dialog window's edges (so it re-sizes with the dialog) tried using sizePolicy:

    sizePolicy = my_lineEdit.sizePolicy()
    sizePolicy.setHorizontalStretch(1)
    my_lineEdit.setSizePolicy( sizePolicy )

没有错误.但是line_edit窗口小部件仍然没有贴在对话框的边缘...可能是什么问题?

There are no errors. But the line_edit widget still doesn't stick to the edges of the dialog... What could be wrong?

推荐答案

您无需执行任何操作.

这个简单的示例将根据需要调整大小:

This simple example resizes as necessary:

from PyQt4 import QtGui

class Dialog(QtGui.QDialog):
    def __init__(self):
        super(Dialog, self).__init__()
        form = QtGui.QFormLayout(self)
        label = QtGui.QLabel('Label', self)
        edit = QtGui.QLineEdit(self)
        form.addRow(label, edit)

if __name__ == '__main__':

    import sys
    app = QtGui.QApplication(sys.argv)
    window = Dialog()
    window.setGeometry(500, 300, 300, 50)
    window.show()
    sys.exit(app.exec_())

更新:

好的，看来QFormaLayout 的行为与平台有关.引用文档:

Okay, it seems the behaviour of QFormaLayout is platform-dependent. To quote from the docs:

基于Mac OS X Aqua准则的样式.标签是右对齐的，字段不会超出其大小提示，并且表单是水平居中的.

Style based on the Mac OS X Aqua guidelines. Labels are right-aligned, the fields don't grow beyond their size hint, and the form is horizontally centered.

但是，有一个 setFieldGrowthPolicy 方法，可以用来替代Mac OSX上的默认行为.因此，尝试:

However, there is a setFieldGrowthPolicy method, which could be used to over-ride the default behaviour on Mac OSX. So try:

    my_formLayout.setFieldGrowthPolicy(QtGui.QFormLayout.ExpandingFieldsGrow)

或:

    my_formLayout.setFieldGrowthPolicy(QtGui.QFormLayout.AllNonFixedFieldsGrow)

这篇关于PyQt:LineEdit小部件在FormLayout内的位置的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！