LEADTOOLS Basic Data Types

Data Type	Definition and Usage
L_WCHAR	Defined as WCHAR
	Used as a 16-bit UNICODE character
L_CHAR	Defined as char
	Used as a signed 8-bit integer
L_UCHAR	Defined as unsigned char
	Used as an unsigned 8-bit integer
Integer Types
L_INT8	Defined as signed char
	Used as an 8-bit signed integer
L_INT16	Defined as signed short
	Used as a 16-bit signed integer
L_INT32	Defined as signed int
	Used as a 32-bit signed integer
L_INT64	Defined as signed `__int64`
	Used as a 64-bit signed integer
L_UINT8	Defined as unsigned char
	Used as an 8-bit unsigned integer
L_UINT16	Defined as unsigned short
	Used as a 16-bit unsigned integer
L_UINT32	Defined as unsigned int
	Used as a 32-bit unsigned integer
L_UINT64	Defined as unsigned `__int64`
	Used as a 64-bit unsigned integer
L_INT	Defined as int
	Used as a 32-bit signed integer
L_UINT	Defined as unsigned int
	Used as a 32-bit unsigned integer
Long and Short
L_LONG	Defined as long
	Used as a signed integer, 32-bits or larger
L_ULONG	Defined as unsigned long
	Used as an unsigned integer, 32-bits or larger
L_USHORT	Defined as unsigned short
	Used as a 16-bit unsigned integer
Float types
L_FLOAT	Defined as float
	Used as a floating point number
L_DOUBLE	Defined as double
	Used as a double precision floating point number
32/64 Types
L_INT_PTR	Defined as INT_PTR
	Guaranteed to be the same size as a pointer. The size changes with pointer size (32/64). Used where a pointer is cast to an integer type
L_UINT_PTR	Defined as UINT_PTR
	Unsigned variation of L_INT_PTR
L_LONG_PTR	Defined as LONG_PTR
	Guaranteed to be the same size as a pointer. The size changes with pointer size (32/64). Used where a pointer is cast to an integer type
L_ULONG_PTR	Defined as ULONG_PTR
	Unsigned variation of L_LONG_PTR
L_SIZE_T	Defined as SIZE_T
	Maximum number of bytes to which a pointer can refer
L_SSIZE_T	Signed version of L_SIZE_T
L_IFDTYPE	Defined as L_SIZE_T
Other types
L_VOID	Defined as void
	Used as a void
L_BITFIELD	Defined as L_UINT
	Used as a bit field
L_COLORREF	Defined as COLORREF
	See Windows SDK
Booleans
L_BOOL	Defined as BOOL
	Used as a boolean value
UNICODE types
L_TCHAR	Defined as either char or TCHAR
	If FOR_UNICODE is defined, then L_TCHAR will be defined as TCHAR
Handles
L_HANDLE	Defined as HANDLE
	See Windows SDK
L_HFILE	Defined as HANDLE
	See Windows SDK
L_SANEHANDLE	Defined as HANDLE
	See Windows SDK
L_SvgNodeHandle	Defined as L_HANDLE
	See Windows SDK
L_HWND	Defined as HWND
	See Windows SDK
L_HGDIOBJ	Defined as HGDIOBJ
	See Windows SDK
L_HDC	Defined as HDC
	See Windows SDK
L_HRGN	Defined as HRGN
	See Windows SDK
L_HPALETTE	Defined as HPALETTE
	See Windows SDK.
L_HBITMAP	Defined as HBITMAP
	See Windows SDK.
L_HCURSOR	Defined as HCURSOR
	See Windows SDK.
L_HICON	Defined as HICON
	See Windows SDK.
L_HMETAFILE	Defined as HMETAFILE
	See Windows SDK
L_HENHMETAFILE	Defined as HENHMETAFILE
	See Windows SDK
L_HDIB	Defined as HDIB
	See Windows SDK
L_HINSTANCE	Defined as HINSTANCE
	See Windows SDK
L_HPEN	Defined as HPEN
	See Windows SDK
L_HFONT	Defined as HFONT
	See Windows SDK.
L_HBRUSH	Defined as HBRUSH
	See Windows SDK
L_HGLOBAL	Defined as HGLOBAL
	See Windows SDK
L_Regex	Defined as HANDLE
	See Windows SDK
L_VerexHandle	Defined as HANDLE
	See Windows SDK
DOCUMENTWRITER_HANDLE	Defined as HANDLE
	See Windows SDK
Structures
L_POINT	Defined as POINT
	See Windows SDK
L_RECT	Defined as RECT
	See Windows SDK
L_SIZE	Defined as SIZE
	See Windows SDK
L_BITMAPINFOHEADER	Defined as BITMAPINFOHEADER
	See Windows SDK
L_BITMAPINFO	Defined as BITMAPINFO
	See Windows SDK
L_RGBQUAD	Defined as RGBQUAD
	See Windows SDK
L_RGBQUAD16

typedef struct tagL_RGBQUAD16 
{ 
   L_UINT16 rgbBlue;     // 16-bit blue component 
   L_UINT16 rgbGreen;    // 16-bit green component 
   L_UINT16 rgbRed;      // 16-bit red component 
   L_UINT16 rgbReserved; // reserved - use 0 
} L_RGBQUAD16;

Calling Convention

Convention	Description
L_xxx_API	Defined as `__declspec(dllimport) __stdcall`
	NOTE: xxx is the module designation.
	Examples: `L_LTDIS_API` - `LTDIS`, `L_LTKRN_API` - `LTKRN`

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