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Common Types

NameCategoryDescription
BOOLBasic32‑bit integer used as Boolean (TRUE/FALSE).
DWORDBasicUnsigned 32‑bit integer.
HANDLEBasicOpaque reference to an object.
POINTStructureDefines X and Y coordinates of a point.
RECTStructureDefines the coordinates of the upper‑left and lower‑right corners of a rectangle.
FILETIMEStructureRepresents the number of 100‑nanosecond intervals since January 1, 1601 (UTC).
HRESULTBasicResult code used in COM and Win32 APIs.
LRESULTBasicResult of a message processing function.
UINTBasicUnsigned integer.
WCHARBasicWide character (UTF‑16).