Platform Independent Qt GUI example

EilatBay.jpg

LoadPicture.ui

<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
 <class>Dialog</class>
 <widget class="QDialog" name="Dialog">
  <property name="windowModality">
   <enum>Qt::ApplicationModal</enum>
  </property>
  <property name="geometry">
   <rect>
    <x>0</x>
    <y>0</y>
    <width>1265</width>
    <height>708</height>
   </rect>
  </property>
  <property name="baseSize">
   <size>
    <width>600</width>
    <height>600</height>
   </size>
  </property>
  <property name="windowTitle">
   <string>Click PushButton to load picture</string>
  </property>
  <property name="modal">
   <bool>true</bool>
  </property>
  <widget class="QScrollArea" name="imageScrollArea">
   <property name="geometry">
    <rect>
     <x>20</x>
     <y>20</y>
     <width>800</width>
     <height>600</height>
    </rect>
   </property>
   <property name="verticalScrollBarPolicy">
    <enum>Qt::ScrollBarAlwaysOn</enum>
   </property>
   <property name="horizontalScrollBarPolicy">
    <enum>Qt::ScrollBarAlwaysOn</enum>
   </property>
   <property name="widgetResizable">
    <bool>true</bool>
   </property>
   <widget class="QWidget" name="scrollAreaWidgetContents">
    <property name="geometry">
     <rect>
      <x>0</x>
      <y>0</y>
      <width>400</width>
      <height>300</height>
     </rect>
    </property>
    <widget class="QLabel" name="imageLabel">
     <property name="geometry">
      <rect>
       <x>0</x>
       <y>0</y>
       <width>285</width>
       <height>171</height>
      </rect>
     </property>
     <property name="autoFillBackground">
      <bool>false</bool>
     </property>
     <property name="styleSheet">
      <string notr="true">font: 20pt &quot;MS Shell Dlg 2&quot;;</string>
     </property>
     <property name="frameShape">
      <enum>QFrame::NoFrame</enum>
     </property>
     <property name="text">
      <string/>
     </property>
     <property name="textFormat">
      <enum>Qt::AutoText</enum>
     </property>
     <property name="scaledContents">
      <bool>false</bool>
     </property>
     <property name="alignment">
      <set>Qt::AlignCenter</set>
     </property>
    </widget>
   </widget>
  </widget>
  <widget class="QPushButton" name="btn">
   <property name="geometry">
    <rect>
     <x>850</x>
     <y>120</y>
     <width>100</width>
     <height>40</height>
    </rect>
   </property>
   <property name="text">
    <string>PushButton</string>
   </property>
  </widget>
 </widget>
 <resources/>
 <connections/>
</ui>

pyqt5_image_ex.py

from sys import argv, exit
from PyQt5 import QtCore, QtGui, QtWidgets, uic
from re import sub
from os.path import realpath, dirname
from os import name as osname

class photo(QtWidgets.QDialog):
    def __init__(self,parent=None):
        super(photo, self).__init__(parent)
        form_path=dirname(realpath(argv[0]))+ "/LoadPicture.ui"
        if 'nt' == osname:
            form_path=sub("/",r"\\", form_path)
        uic.loadUi(form_path, self)
        self.btn.clicked.connect(self.attachImage)
        self.imageWidgetAdded=False

    def attachImage(self):
        if not self.imageWidgetAdded:
            lay = QtWidgets.QVBoxLayout(self.scrollAreaWidgetContents)
            lay.setContentsMargins(0, 0, 0, 0)
            lay.addWidget(self.imageLabel)
            self.imageWidgetAdded=True
        image_path=dirname(realpath(argv[0]))+ "/EilatBay.jpg"
        if 'nt' == osname:
            image_path=sub("/",r"\\", image_path)
        pixMap = QtGui.QPixmap(image_path)
        self.imageLabel.setPixmap(pixMap)
        self.imageScrollArea.setWidgetResizable(True)
        self.imageLabel.setAlignment(QtCore.Qt.AlignHCenter | QtCore.Qt.AlignVCenter)


def main():
    app = QtWidgets.QApplication(argv)
    window = photo()
    #window.attachImage()
    window.show()
    exit(app.exec_())


if __name__ == '__main__':
    main()

run_pyqt5_image_ex

#!/usr/bin/tcsh -f
set script_realpath=`realpath $0`
set script_path=$script_realpath:h
set python_script_fullpath=${script_path}/pyqt5_image_ex.py
if(`uname` =~ *NT*) then
    /ucrt64/bin/python3 $python_script_fullpath
else
   /usr/bin/python3.11 $python_script_fullpath
endif

run_pyqt5_image_ex.sh

#!/usr/bin/bash -f
script_realpath=$(realpath $0)
script_path=$(dirname $script_realpath)
python_script_fullpath=$script_path/pyqt5_image_ex.py
os=$(uname)
if [[ $os =~ .*NT.* ]]; then
    /c/msys64/ucrt64/bin/python3 $python_script_fullpath
else
    /usr/bin/python3.11 $python_script_fullpath
fi