如何根据PyQt5中的Contents获取Frame的Minimum Size/Fixed Size？

Question

我想根据框架的内容将框架大小设置为 Minimum/Fixed。例如，在我的代码中，我通过手动（第 47 行）设置框架大小值，而不是这个，如何通过代码本身 calculate/obtain 框架的大小？

import sys, os
from PyQt5.QtWidgets import *
from PyQt5.QtCore import *


def stylesheet_country_63():
    return """
           QLabel{
           font-family: Trebuchet MS; font-style: normal; font-size:10pt; font-weight:400;
           color:Black; padding:6px;
           qproperty-alignment: 'AlignVCenter | AlignRight';
           min-width:170px;
           }
           """

class AssistScriptClassCountry63(QWidget):

    def __init__(self):
        super().__init__()
        self.setWindowTitle("Country")

        self.widgets_country_63()
        self.layout_country_63()

    def widgets_country_63(self):
        self.lbl_country63_name = QLabel("Country Name :")
        self.lbl_country63_isdcode = QLabel("Isd Code :")
        self.lbl_country63_currency = QLabel("Currency :")
        self.lbl_country63_curascii = QLabel("Currency Symbol :\n (Ascii Value)  ")
        self.lbl_country63_curicon = QLabel(" Currency Symbol :")

        self.lbl_country63_name.setStyleSheet(stylesheet_country_63())
        self.lbl_country63_isdcode.setStyleSheet(stylesheet_country_63())
        self.lbl_country63_currency.setStyleSheet(stylesheet_country_63())
        self.lbl_country63_curascii.setStyleSheet(stylesheet_country_63())
        self.lbl_country63_curicon.setStyleSheet(stylesheet_country_63())

        self.tbx_country63_name = QLineEdit()
        self.tbx_country63_isdcode = QLineEdit()
        self.tbx_country63_currency = QLineEdit()
        self.tbx_country63_curascii = QLineEdit()
        self.tbx_country63_curicon = QLineEdit()

    def layout_country_63(self):
        self.layout_country63_outerframe = QHBoxLayout()

        self.frame_country63_innerframe = QFrame()
        self.frame_country63_innerframe.setStyleSheet("background-color:lightgreen")
        self.layout_country63_innerframe = QFormLayout(self.frame_country63_innerframe)

        self.layout_country63_innerframe.addRow(self.lbl_country63_name, self.tbx_country63_name)
        self.layout_country63_innerframe.addRow(self.lbl_country63_isdcode, self.tbx_country63_isdcode)
        self.layout_country63_innerframe.addRow(self.lbl_country63_currency, self.tbx_country63_currency)
        self.layout_country63_innerframe.addRow(self.lbl_country63_curascii, self.tbx_country63_curascii)
        self.layout_country63_innerframe.addRow(self.lbl_country63_curicon, self.tbx_country63_curicon)

        self.frame_country63_innerframe.setFixedSize(300,180)
        self.layout_country63_outerframe.addWidget(self.frame_country63_innerframe)
        self.setLayout(self.layout_country63_outerframe)

if __name__ == "__main__":
    app = QApplication(sys.argv)
    countrywin = AssistScriptClassCountry63()
    # qApp.setStyleSheet(stylesheet_country_63())
    countrywin.show()
    sys.exit(app.exec_())

Answer 1

使用小部件的sizeHint()：

This property holds the recommended size for the widget [...]
The default implementation of sizeHint() returns an invalid size if there is no layout for this widget, and returns the layout's preferred size otherwise.

^{（强调我的）}

布局的首选大小是该布局管理的所有子窗口小部件（和布局）的首选大小。您将获得基于各种尺寸限制（minimum/maximum/fixed 尺寸）、每个子项的提示和策略的计算尺寸。

    hint = self.frame_country63_innerframe.sizeHint()
    self.frame_country63_innerframe.setMinimumSize(hint)

^{注意：您可以设置最小尺寸或固定尺寸，同时尝试两者都是没有意义的：设置固定尺寸实际上会导致设置 both minimum and maximum size 为相同的值。}

如何根据PyQt5中的Contents获取Frame的Minimum Size/Fixed Size？

How to obtain the Minimum Size/Fixed Size of the frame based on the Contents in PyQt5?

python

pyqt

pyqt5