SIGNAL/SLOT migration: lts_app_descriptor_editor.cpp and qsql_informix.cpp

- Migrated 12 SIGNAL/SLOT connections in lts_app_descriptor_editor.cpp to function-pointer syntax
  - clicked, editingFinished, pressed, textChanged signals
  - Added required includes: QListView, QLineEdit, QPushButton
- Migrated 2 SIGNAL/SLOT connections in qsql_informix.cpp to function-pointer syntax
  - timeout signal connections
- Added Qt5::Core5Compat dependency for QTextCodec support in Qt6
  - Updated CMakeLists.txt to link Qt6::Core5Compat

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

qt6-after/qt6-migrated-legatus/Z/src/qsql_informix/CMakeLists.txt

@@ -11,7 +11,7 @@ SET(CMAKE_VISIBILITY_INLINES_HIDDEN ON)
 SET(CMAKE_POSITION_INDEPENDENT_CODE ON)
 SET(CMAKE_AUTOMOC TRUE)
 SET(QT_USE_IMPORTED_TARGETS TRUE)
-find_package(Qt6 5.9.0 COMPONENTS Core Sql Test REQUIRED)
+find_package(Qt6 5.9.0 COMPONENTS Core Sql Test Core5Compat REQUIRED)
 
 FIND_PACKAGE(IClientSDK REQUIRED)
 
@@ -30,6 +30,7 @@ ADD_LIBRARY(qsql_informix SHARED ${ifx_SRCS})
 TARGET_LINK_LIBRARIES(qsql_informix
   Qt6::Core
   Qt6::Sql
+  Qt6::Core5Compat
   ${ICLIENT_SDK_LIBRARIES}
   ${ICLIENT_SDK_LIBRARIES_CPP}
   ${ICLIENT_SDK_ESQL_OBJECT_FILE}

qt6-after/qt6-migrated-legatus/Z/src/qsql_informix/qsql_informix.cpp

@@ -56,8 +56,8 @@ public:
     , connectOnFirstUse(false)
   {
     connectionTimeoutTimer.setSingleShot(true);
-    QObject::connect(&connectionTimeoutTimer, SIGNAL(timeout()),
-                     driver, SLOT(timeout()));
+    QObject::connect(&connectionTimeoutTimer, &QTimer::timeout,
+                     driver, &QInformixDriver::timeout);
   }
 
   ITConnection *connection;
@@ -1015,7 +1015,7 @@ bool QInformixDriver::open(const QString &db,
       if (bOk && d->connTimeout > 0)
       {
         d->connTimeout *= 1000; 
-        QTimer::singleShot(d->connTimeout, this, SLOT(timeout()));
+        QTimer::singleShot(d->connTimeout, this, &QInformixDriver::timeout);
       }
       else
         d->connTimeout = -1;