Several projects depends on Qt library 0f 5.11.2 version.
TKDFBrowser
TKMessageView
TKShapeView
TKTInspector
TInspectorEXE
TKTreeModel
TKMessageModel
TKVInspector
TKToolsDraw
TKTInspectorAPI
TKView
When using C++20 language standard, compilation errors occures because
of incompatibility of 5.11.2 version of Qt library interface with C++20 standard.
Therefore, these projects stay on C++11 language standard.