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APIENTRY
The calling convention for system functions.
This type is declared in WinDef.h as follows:
#define APIENTRY WINAPI
ATOM
An atom. For more information, see Atoms.
This type is declared in WinDef.h as follows:
typedef WORD ATOM;
BOOL
A Boolean variable (should be TRUE or FALSE).
This type is declared in WinDef.h as follows: