Ensure only one instance is running and publish company info.

Gui/CompanyConf.qml

@@ -111,4 +111,17 @@ ColumnLayout
     {
         Layout.fillHeight: true
     }
+
+    Component.onCompleted:
+    {
+        var c = config.getCompanyInfo()
+        if (Object.keys(c).length)
+        {
+          companyName.text = c['NAME']
+          street.text = c['STREET']
+          houseno.text = c['HOUSE']
+          zipcode.editText = c['ZIPCODE']
+          city.editText = c['CITY']
+        }
+    }
 }

lib/ConfigLoader.py

@@ -249,8 +249,12 @@ class ConfigLoader(QObject):
         self.__saveConfig()
 
     @Slot(result = dict)
-    def getCompanyInfo():
+    def getCompanyInfo(self):
+        try:
             return self.__config['company']
+        except KeyError as ex:
+            print(f"Missing company info: {ex}")
+            return None
 
     @Slot(dict)
     def saveMiscConf(self, misc_conf = None):
@@ -259,7 +263,11 @@ class ConfigLoader(QObject):
 
     @Slot(result = bool)
     def systray(self):
+        try:
             return self.__config['misc']['SYSTRAY']
+        except KeyError as ex:
+            print(f"Missing configuration: {ex}")
+            return False
 
 
     @Slot(str, str)

main.py

@@ -2,10 +2,11 @@
 import os
 import sys
 import logging
+from PySide6.QtNetwork import QLocalServer, QLocalSocket
 from PySide6.QtWidgets import QSystemTrayIcon
 from PySide6.QtGui import QGuiApplication, QIcon
 from PySide6.QtQml import QQmlApplicationEngine
-#from PySide6.QtCore import QResource
+from PySide6.QtCore import QIODevice #, QResource
 from lib.ConfigLoader import ConfigLoader
 from lib.DB.BusinessModel import BusinessModel
 import rc_pyqcrm
@@ -34,6 +35,7 @@ os.environ['QML_XHR_ALLOW_FILE_READ'] = '1'
 # name=""
 # type=""
 
+
 bad_config = False
 db_con = False
 address_model = None
@@ -85,6 +87,19 @@ if __name__ == "__main__":
     app = QGuiApplication(sys.argv)
     engine = QQmlApplicationEngine()
 
+
+    pyq_sok = QLocalSocket()
+    pyq_sok.connectToServer("PYQCRM_INSTANCE", QIODevice.ReadOnly)
+
+    if pyq_sok.state() == QLocalSocket.ConnectedState:
+        print("PYQCRM already running..")
+        print("Stop the running instance before running the application..")
+        sys.exit(-1)
+    else:
+        print("Starting PYQCRM_INSTANCE")
+        pyq_server = QLocalServer()
+        pyq_server.listen("PYQCRM_INSTANCE")
+
     engine.addImportPath("qrc:/");
 
     # qml_file = Path(__file__).resolve().parent / "Gui/main.qml"