Python 如何从 groupBox 更改子 QLabel 小部件的字体大小
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How to change font size of child QLabel widget from the groupBox
提问by user2345
How can use different font & size for the child Widgets in the GroupBox and the tittle for the GroupBox in python
如何为 GroupBox 中的子 Widget 和 Python 中 GroupBox 的标题使用不同的字体和大小
def panel(self):
groupBox = QtGui.QGroupBox("voltage Monitor")
groupBox.setFont(QtGui.QFont('SansSerif', 13)) # the title size is good
..
self.Voltage_Label = []
..
vbox = QtGui.QGridLayout()
self.Voltage_Label.append(QtGui.QLabel("voltage1 ")) # i need to have diff Font & size for these
self.Voltage_Label.append(QtGui.QLabel("voltage2 "))
self.Voltage_Label.append(QtGui.QLabel("voltage3 "))
..
vbox.addWidget(self.Voltage_Label[i], i, 0)
..
groupBox.setLayout(vbox)
return groupBox
I tired this
我累了
self.Voltage_Label.setFont(QtGui.QFont('SansSerif', 10))
I get this error
我收到这个错误
!! self.Voltage_Label.setFont(QtGui.QFont('SansSerif', 10))
AttributeError: 'list' object has no attribute 'setFont' !!
but for something like thistitle1 = QtGui.QLabel("Sample Title")as a child widget i can change it by
但是对于像这样title1 = QtGui.QLabel("Sample Title")的子小部件，我可以通过以下方式更改它
title1.setFont(QtGui.QFont('SansSerif', 10))
采纳答案by user2345
While I was waiting for an answer I wanted to give it a try and found this method/solution for my question:
在等待答案时，我想尝试一下，并为我的问题找到了此方法/解决方案：
self.Voltage_Label = []
self.Voltage_Label.append(QtGui.QLabel("voltage1 ")) # i need to have diff Font & size for these
self.Voltage_Label.append(QtGui.QLabel("voltage2 "))
self.Voltage_Label.append(QtGui.QLabel("voltage3 "))
.
.
for i in xrange(5):
newfont = QtGui.QFont("Times", 8, QtGui.QFont.Bold)
self.Voltage_Label[i].setFont(newfont)
回答by Nuno André
You were trying to invoke the method setFont()of an object of the class list(which hasn't this method), not of the QtGui.QLabelobject.
您试图调用setFont()类的对象的方法list（没有这个方法），而不是QtGui.QLabel对象的方法。
You can use a list comprehension for a better scalability and performance:
您可以使用列表理解来获得更好的可扩展性和性能：
voltages = ["voltage1 ", "voltage2 ", "voltage3 "]
# Populates the list with QLabel objects
self.Voltage_Label = [QtGui.QLabel(x) for x in voltages]
# Invokes setFont() for each object
[x.setFont(QtGui.QFont("Times", 8, QtGui.QFont.Bold)) for x in self.Voltage_Label]
If you need more voltage labels you only have to modify the list voltages.
如果您需要更多电压标签，您只需修改列表voltages。
And then even:
然后甚至：
[vbox.addWidget(self.Voltage_Label[i], i, 0) for i in range(len(self.Voltage_Label))]
