VSTGUI 4.1 to 4.9 with VSTGUI_ENABLE_DEPRECATED_METHODS 1

I am switching from VSTGUI 4.1 to 4.9 without changing too much in code. However, the compilation of VSTGUI 4.9 with VSTGUI_ENABLE_DEPRECATED_METHODS 1 gives 2 errors:

aeffguieditor.cpp(91,34): error C2039: ‘createDrawContext’: is not a member of ‘VSTGUI::CFrame’
aeffguieditor.cpp(136,75): error C2660: ‘VSTGUI::CFrame::onWheel’: function does not take 3 arguments

Does anyone know why it happens?
Thank you!

Later: Even without VSTGUI_ENABLE_DEPRECATED_METHODS the compilation of 4.9 produces so many errors.
What is the smooth path from VSTGUI 4.1 to 4.9?

First to get this compiled with deprecation enabled you can just remove the code in AEffGUIEditor::draw and AEffGUIEditor::onWheel. This is not called anymore in modern hosts.
To get it compile with deprecations disabled you have to go thru this list : https://steinbergmedia.github.io/vst3_doc/vstgui/html/page_news_and_changes.html#code_changes