https://learn.microsoft.com/en-us/windows/win32/api/ddrawint/ns-ddrawint-dd_surface_local?redirectedfrom=MSDN
DD_SURFACE_LOCAL (ddrawint.h) - Win32 apps | Microsoft Learn
The DD_SURFACE_LOCAL structure contains surface-related data that is unique to an individual surface object.
ddsurfacelocalhapps
https://learn.microsoft.com/en-us/windows/win32/api/ddrawint/ns-ddrawint-dd_setexclusivemodedata?redirectedfrom=MSDN
DD_SETEXCLUSIVEMODEDATA (ddrawint.h) - Win32 apps | Microsoft Learn
The DD_SETEXCLUSIVEMODEDATA structure contains the exclusive mode notification information.
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