如何在 PyQt 中更改 QInputDialog 的字体大小？
[英]How to change the font size of a QInputDialog in PyQt?
问题描述
The case of a simple message box
一个简单的消息框案例
I have figured out how to change the font size in simple PyQt dialog windows.我已经想出了如何在简单的 PyQt 对话框窗口中更改字体大小。 Take this example:举个例子：
# Create a custom font
# ---------------------
font = QFont()
font.setFamily("Arial")
font.setPointSize(10)
# Show simple message box
# ------------------------
msg = QMessageBox()
msg.setIcon(QMessageBox.Question)
msg.setText("Are you sure you want to delete this file?")
msg.setWindowTitle("Sure?")
msg.setStandardButtons(QMessageBox.Ok | QMessageBox.Cancel)
msg.setFont(font)
retval = msg.exec_()
if retval == QMessageBox.Ok:
print('OK')
elif retval == QMessageBox.Cancel:
print('CANCEL')
The key to changing the font size is that you actually have a 'handle' to your message box.更改字体大小的关键是您实际上有一个消息框的“句柄”。 The variable msg is available to tweak the message box to your needs before showing it with msg.exec_() .在使用msg.exec_()显示之前，变量msg可用于根据您的需要调整消息框。
The case of a simple input dialog一个简单的输入对话框的案例
The problem about the input dialog is that such handle is not present.输入对话框的问题是这样的句柄不存在。 Take this example:举个例子：
# Show simple input dialog
# -------------------------
filename, ok = QInputDialog.getText(None, 'Input Dialog', 'Enter the file name:')
if(ok):
print('Name of file = ' + filename)
else:
print('Cancelled')
The input dialog object is created on-the-fly.输入对话框对象是即时创建的。 I have no way to tweak it to my needs (eg. apply a different font).我无法根据需要对其进行调整（例如，应用不同的字体）。
Is there a way to get a handle to this QInputDialog object, before showing it?有没有办法在显示之前获取这个QInputDialog对象的句柄？
EDIT :编辑 ：
I was adviced in the comments to try it with an HTML snippet:评论中建议我使用 HTML 片段进行尝试：
filename, ok = QInputDialog.getText(None, 'Input Dialog', '<html style="font-size:12pt;">Enter the file name:</html>')
The result is as follows:结果如下：
As you can see, the text input field has still the small (unchanged) font size.如您所见，文本输入字段仍然具有较小（未更改）的字体大小。
2 个解决方案
解决方案1
4 已采纳 2016-09-08 09:16:58
Thanks to the comments of @denvaar and @ekhumoro, I got the solution.感谢@denvaar 和@ekhumoro 的评论，我得到了解决方案。 Here it is:这里是：
# Create a custom font
# ---------------------
font = QFont()
font.setFamily("Arial")
font.setPointSize(10)
# Create and show the input dialog
# ---------------------------------
inputDialog = QInputDialog(None)
inputDialog.setInputMode(QInputDialog.TextInput)
inputDialog.setWindowTitle('Input')
inputDialog.setLabelText('Enter the name for this new file:')
inputDialog.setFont(font)
ok = inputDialog.exec_()
filename = inputDialog.textValue()
if(ok):
print('Name of file = ' + filename)
else:
print('Cancelled')
解决方案2
0 2022-05-24 11:01:55
QInputDialog consists of QLabel, QLineEdit, and QPushButton. QInputDialog 由 QLabel、QLineEdit 和 QPushButton 组成。 You can independently control their style using setStyleSheet method.您可以使用setStyleSheet方法独立控制它们的样式。
def RequireInputText(Parent, Title="TextInput", Text="Text"):
InputDialog = QInputDialog(None)
InputDialog.setInputMode(QInputDialog.TextInput)
InputDialog.setWindowTitle(Title)
InputDialog.setLabelText(Text)
InputDialog.setStyleSheet(
"""
QLabel{
font-size:20px;
font-weight:bold;
font-family:Arial;
}
QLineEdit{
font-size:20px;
font-weight:bold;
font-family:Arial;
}
QPushButton{
font-size:20px;
font-weight:bold;
font-family:Arial;
border-style:solid;
border-color:black;
border-width:2px;
}
"""
)
Ok = InputDialog.exec_()
if(Ok):
InputText = InputDialog.textValue()
return InputText
else:
return None
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