add Qt viewport

CMakeLists.txt

@@ -9,6 +9,8 @@ endif()
 
 cmake_minimum_required (VERSION 3.26)
 
+set(QT_NO_VERSION_CHECK TRUE)
+
 if(POLICY CMP0167)
     cmake_policy(SET CMP0167 NEW)
 endif()
@@ -125,18 +127,12 @@ find_package(ROOT CONFIG REQUIRED)
 include(${ROOT_USE_FILE})
 
 find_package(VTK REQUIRED)
-# include(${VTK_USE_FILE})
-
-set(GEANT4_USE_HDF5 OFF CACHE BOOL "Use HDF5" FORCE)
-find_package(Geant4 REQUIRED)
-
 find_package(pybind11 REQUIRED)
 
-
 option(CENTOS_SUPPORT "VTK definitions for CentOS" OFF)
 if(CENTOS_SUPPORT)
     find_package(VTK CONFIG REQUIRED)
-    include(${VTK_USE_FILE})
+    # include(${VTK_USE_FILE})
 else()
     find_package(VTK REQUIRED
                      COMPONENTS CommonColor
@@ -157,7 +153,25 @@ else()
                                 RenderingGL2PSOpenGL2
                                 RenderingOpenGL2
                                 RenderingVolumeOpenGL2
-                                 IOGeometry)
+                                IOGeometry
+                                GUISupportQt)
+endif()
+
+find_package(Qt6 COMPONENTS Widgets REQUIRED)
+
+find_package(Geant4 REQUIRED)
+message(STATUS "Geant4 libs: ${Geant4_LIBRARIES}")
+
+# Sanitize Geant4 targets to remove Qt5 dependencies that conflict with VTK/Qt6
+if(TARGET Geant4::G4interfaces)
+    set_target_properties(Geant4::G4interfaces PROPERTIES 
+        INTERFACE_LINK_LIBRARIES "Geant4::G4global;Geant4::G4graphics_reps;Geant4::G4intercoms"
+    )
+endif()
+if(TARGET Geant4::G4OpenGL)
+    set_target_properties(Geant4::G4OpenGL PROPERTIES 
+        INTERFACE_LINK_LIBRARIES "Geant4::G4vis_management;Geant4::G4graphics_reps;Geant4::G4geometry;Geant4::G4materials;Geant4::G4intercoms;Geant4::G4global;OpenGL::GL;OpenGL::GLU"
+    )
 endif()
 
 set(CMAKE_REQUIRED_INCLUDES CMAKE_REQUIRED_INCLUDES math.h)