Qt6 Migration: Complete migration with DDS/RTI support and build validation

Major Changes:
- Merged latest Qt5 devel content from dlbo (292 files changed, 7 new dirs)
- Consolidated forward-declarations and include folders
- Removed unneeded modules per Niklas' repo check list

Build System Fixes:
- Fixed CMake VERSION_GREATER syntax in ParticipantManagement/CMakeLists.txt
- Added VLC packages (libvlc-dev, vlc-plugin-base) to docker_build.sh
- Added PostgreSQL dev packages (libpq-dev, postgresql-server-dev-all) to Dockerfile
- Fixed locale warnings (ANSI_X3.4-1968 → C.UTF-8)
- Fixed ArcGIS SDK path warnings when BUILD_ARCGIS=OFF

Code Generation Fixes:
- Fixed IDL enum collisions (PortType→CorePortType/DdsutPortType, PdmEventType)
- Fixed Grantlee template svc_translation.cpp.grantlee:
  - Changed {{ idl_enum.name }}_def:: to {{ idl_enum.name }}::
  - Fixed .underlying() calls for C++11 scoped enums (enum class)
- Removed generated files from repo (moc_*, *_dtc.h, *_ftc.h)

Validation:
- BUILD_RTI=ON: SUCCESS
- BUILD_RTI=OFF: SUCCESS
- C++17 standard maintained for RTI 7.7 compatibility
- Ubuntu 26.04 Docker environment verified

Remaining Warnings (expected):
- BgViewer, KDChart, KDReports, Poppler-Qt6 not found (optional features)

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

qt5-before/dlbo/Lts/Common/LtsVirtualKeyboard/LtsKeyPushButton.cpp

@@ -0,0 +1,156 @@
+/**
+  * @RDE_HEADER@
+  * PushPutton for Virtual Keyboard
+  * $Id$
+  * $HeadURL$
+  * $Author$
+  * Created by Patric Karwat, SLSE, 2018-06-07
+*/
+
+#include "LtsKeyPushButton.h"
+#include "LtsVirtualKeyboard.h"
+#include <QKeyEvent>
+#include <QCoreApplication>
+#include <QLabel>
+#include <QApplication>
+
+
+namespace LtsVirtualKeyboard
+{
+LtsKeyPushButton::LtsKeyPushButton(const QString &notTranslatedText, const QString &notTranslatedTextAlt, QWidget *parent)
+  : QToolButton(parent)
+  , m_parent(parent)
+  , m_notTranslatedText(notTranslatedText)
+  , m_notTranslatedTextAlt(notTranslatedTextAlt)
+  , m_altMode(false)
+  , m_capsMode(false)
+{
+  setFocusPolicy(Qt::NoFocus);
+  setStyleSheet(QStringLiteral(DEFAULT_STYLE_BUTTON) + QStringLiteral(DEFAULT_BACKGROUND_BUTTON));
+  //qWarning() << "New Key: " << notTranslatedText;
+  connect(this, &LtsKeyPushButton::pressedKey, this, &LtsKeyPushButton::getKeyPress);
+}
+
+void LtsKeyPushButton::getKeyPress()
+{
+  int     keyCode = 0;
+  QKeyEvent *key = nullptr;
+  QString   text = this->text();
+  //we now are in AltMode
+
+  if (!qobject_cast<LtsVirtualKeyboard *>(m_parent))
+    return;
+  LtsVirtualKeyboard *keyboard = qobject_cast<LtsVirtualKeyboard *>(m_parent);
+
+  //Qt Uses Ampersands for indocators so little work around
+  if (text == QStringLiteral("&&"))
+    text = QStringLiteral("&");
+
+  if (NO_SPECIAL_KEY(text) == false && (IS_BACK(text) == true || IS_TAB(text) == true || IS_RETURN(text) == true || IS_CTRL_LEFT(text) == true ||
+                                        IS_ALT(text) == true || IS_CANC(text) == true || IS_CUT_LEFT(text) == true || IS_PASSWORD(text) || IS_PASTE(text) || IS_COPY(text)))
+    key = new QKeyEvent(QEvent::KeyPress, keyCode, Qt::NoModifier, text);
+  else
+  {
+    keyCode = text.toUtf8()[0];
+    if (m_capsMode == false)
+    {
+      text = text.toLower();
+      key = new QKeyEvent(QEvent::KeyPress, keyCode, Qt::NoModifier, text);
+    }
+    else
+      key = new QKeyEvent(QEvent::KeyPress, keyCode, Qt::ShiftModifier, text);
+  }
+  keyboard->receiptChildKey(nullptr, key);
+  QCoreApplication::processEvents();
+}
+
+
+void LtsKeyPushButton::mousePressEvent(QMouseEvent *)
+{
+  if (!qobject_cast<LtsVirtualKeyboard *>(m_parent))
+    return;
+  QString                 text = this->text();
+  QString                 defaultStyleButton = QStringLiteral(DEFAULT_STYLE_BUTTON);
+  QString                 changedColorButton = QStringLiteral(CHANGED_BACKGROUND_BUTTON);
+  //
+  if (IS_CAPS(text) == true)
+  {
+    if (!styleSheet().contains(QStringLiteral(DEFAULT_BACKGROUND_BUTTON)))
+      changedColorButton = QStringLiteral(DEFAULT_BACKGROUND_BUTTON);
+    setStyleSheet(defaultStyleButton + changedColorButton);
+    repaint();
+    QCoreApplication::processEvents();
+  }
+  //  else if (tmpKeyBoard->isEnabledSwitchingEcho() == true && (IS_PASSWORD(text) == true))
+  //    tmpKeyBoard->switchKeyEchoMode(tmpKeyBoard->currentTextBox());
+  else if (IS_FIN(text) == true)
+    setStyleSheet(defaultStyleButton + QStringLiteral(CHANGED_BACKGROUND_BUTTON));
+  else
+  {
+    setStyleSheet(defaultStyleButton + changedColorButton);
+    repaint();
+    QCoreApplication::processEvents();
+  }
+  emit pressedKey();
+
+  m_oldYKey = 0;
+}
+
+void LtsKeyPushButton::mouseReleaseEvent(QMouseEvent * /* event */)
+{
+  if (!qobject_cast<LtsVirtualKeyboard *>(m_parent))
+    return;
+
+  LtsVirtualKeyboard  *tmpKeyBoard = qobject_cast<LtsVirtualKeyboard *>(m_parent);
+
+  bool            pressedEcho = IS_PASSWORD(text()) == true;
+
+  if (IS_CAPS(text()) == false && pressedEcho == false)
+    setStyleSheet(QStringLiteral(DEFAULT_STYLE_BUTTON) + QStringLiteral(DEFAULT_BACKGROUND_BUTTON));
+  else if (pressedEcho == true && tmpKeyBoard->isEnabledSwitchingEcho() == false)// && tmpKeyBoard->currentTextBox()->echoMode() == QLineEdit::Normal)
+    setStyleSheet(QStringLiteral(DEFAULT_STYLE_BUTTON) + QStringLiteral(DEFAULT_BACKGROUND_BUTTON));
+}
+
+void LtsKeyPushButton::changeEvent(QEvent *event)
+{
+  if (event->type() == QEvent::LanguageChange)
+  {
+    setAltMode(m_altMode);
+  }
+  else
+    QToolButton::changeEvent(event);
+}
+
+void LtsKeyPushButton::setAltMode(bool altmode)
+{
+  m_altMode = altmode;
+  if (m_altMode)
+  {
+    if (!IS_CANC(text()) && !IS_FIN(text()) && !IS_CAPS(text())
+        && !IS_COPY(text()) && !IS_PASTE(text()) && !IS_CUT_LEFT(text()) )
+      setText(m_notTranslatedTextAlt); //??
+  }
+  else
+  {
+    setText(m_notTranslatedText);
+  }
+  setObjectName(text());
+
+  setCapsMode(m_capsMode);
+}
+
+void LtsKeyPushButton::setCapsMode(bool caps)
+{
+  if (text().length() > 2 || IS_FIN(text())) //because the ampersand
+    return;
+  if (m_notTranslatedText == QChar(223))
+    return;
+  m_capsMode = caps;
+  if (m_capsMode)
+  {
+    setText(text().toUpper());
+  }
+  else
+    setText(text().toLower());
+}
+} //namespace LtsVirtualKeyboard