more updates

CMakeLists.txt

@@ -6,7 +6,7 @@ set(CMAKE_AUTOUIC ON)
 set(CMAKE_AUTOMOC ON)
 set(CMAKE_AUTORCC ON)
 
-set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD 20)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 
 find_package(QT NAMES Qt6 Qt5 REQUIRED COMPONENTS Widgets)
@@ -25,7 +25,7 @@ if(${QT_VERSION_MAJOR} GREATER_EQUAL 6)
         MANUAL_FINALIZATION
         ${PROJECT_SOURCES}
         tiercard.hpp tiercard.cpp
-        flowlayout.cpp flowlayout.h flowlayout.pro
+        flowlayout.cpp flowlayout.h
         tiercardlayout.hpp tiercardlayout.cpp
         aspectratiopixmaplabel.hpp aspectratiopixmaplabel.cpp
         fullsizelayout.hpp fullsizelayout.cpp
@@ -35,6 +35,8 @@ if(${QT_VERSION_MAJOR} GREATER_EQUAL 6)
         utils.hpp
         rowholder.hpp rowholder.cpp
         settings.hpp settings.cpp
+        invalididexception.hpp invalididexception.cpp
+        tierplaceholder.hpp tierplaceholder.cpp
 
     )
 # Define target properties for Android with Qt 6 as: