- OMGUI_DLL
- Defined when using OMGUI as a shared library
- _DEBUG
- Defined in debug builds
- OMGUI_WIN32
- Defined when building using the Windows backend
- OMGUI_GTK2
- Defined when using the GTK2 backend
- OMGUI_COCOA
- Defined when using the Cocoa backend
- OMGUI_WIDECHARS
- Defined when the backend uses UTF16 for its character encoding, causing the library to use wide character strings
