#ifndef _NTGDI_H
//
// GDI client-side types
//
#define GDI_CLIENT_TYPE_FROM_HANDLE(Handle) ((ULONG)(Handle) & ((GDI_HANDLE_ALTTYPE_MASK << GDI_HANDLE_ALTTYPE_SHIFT) | \
(GDI_HANDLE_TYPE_MASK << GDI_HANDLE_TYPE_SHIFT)))
View code on GitHubNo description available.