Add Mac system button area interfaces

Sine Striker

2023-12-17 52a662ed17db6c3a3ff2050d61bc2e06ea21b056

 examples/shared/widgetframe/CMakeLists.txt

@@ -13,4 +13,9 @@
    QT_LINKS Core Gui Widgets
)

set_target_properties(${PROJECT_NAME} PROPERTIES
    CXX_STANDARD 17
    CXX_STANDARD_REQUIRED TRUE
)

target_include_directories(${PROJECT_NAME} PUBLIC . ..)