Comparison between data types of Windows APIs and Delphi data types (reference)

Windows Data Type	Delphi Data Type	Description
LPSTR	PAnsiChar	String pointer
LPCSTR	PAnsiChar	String pointer
DWORD	LongWord	Integer
BOOL	LongBool	Boolean
PBOOL	^ BOOL	Pointer to a Boolean Value
PByte	^ Byte	Pointer to the byte value
PINT	^ Integer	Pointer to an integer
PSingle	^ Single	Pointer to a single-precision floating point value
PWORD	^ Word	Pointer to a 16-bit value
PDWORD	^ DWORD	Pointer to a 32-bit value
LPDWORD	PDWORD	Pointer to a 32-bit value
UCHAR	Byte	8-bit value (can be used to represent characters)
PUCHAR	^ Byte	Pointer to an 8-bit value
SHORT	Smallint	Signed 16-digit integer
UINT	LongWord	Unsigned 32-bit integer
PUINT	^ UINT	Pointer to an unsigned 32-bit integer
ULONG	Cardinal	Unsigned 32-bit integer
PULONG	^ ULONG	Pointer to an unsigned 32-bit integer
PLongint	^ Longint	Pointer to a 32-bit value
PInteger	^ Integer	Pointer to a 32-bit value
PSmallInt	^ Smallint	Pointer to a 16-bit value
PDouble	^ Double	Pointer to a double-precision floating point value
LCID	DWORD	Local identifier
LANGID	Word	Language identifier
THandle	LongWord	Object handle
PHandle	^ THandle	Pointer to handle
WOARAM	Longint	32-bit message Parameters
LPARAM	Longint	32-bit message Parameters
LRESULT	Longint	32-bit function return value
HWND	LongWord	Window handle
HHOOK	LongWord	Windows Hook handle
ATOM	Word	String indexes in local or global atomic tables
HGLOBAL	THandle	Global Dynamic Memory handle
HLOCAL	THandle	Local dynamic memory handle (no difference between 32-bit and HGLOBAL)
FARPROC	Pointer	Pointer to a process. It is usually used as a parameter type in the function that requires callback.
HGDIOBJ	LongWord	GDI object handle
HBITMAP	LongWord	Windows bitmap object handle
HBRUSH	LongWord	Windows paint brush object handle
HDC	LongWord	Device environment handle
HENHMETAFILE	LongWord	Windows Enhanced Metafile object handle
HFONT	LongWord	Windows logical font object handle
HICON	LongWord	Windows icon object handle
HMENU	LongWord	Windows menu object handle
HMETAFILE	LongWord	Windows Metafile object handle
HINST	THandle	Instance object handle
HMODULE	HINST	Module handle
HPALETTE	LongWord	Windows palette object handle
HPEN	LongWord	Windows paint brush object handle
HRGN	LongWord	Windows region object handle
HRSRC	THandle	Windows resource object handle
HKL	LongWord	Windows keyboard layout handle
HFILE	LongWord	Handle Of The opened file
HCURSOR	HICON	Windows mouse cursor object handle
COLORREF	DWORD	Windows color index value handle, including red, green, and blue