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Windows Data Types

2010-04-03 14:22 645 查看
The data types supported by Windows are used to define function return values, function and message parameters, and structure members. They define the size and meaning of these elements. For more information about the underlying C/C++ data types, see Data Type Ranges.

The following table contains the following types: character, integer, Boolean, pointer, and handle. The character, integer, and Boolean types are common to most C compilers. Most of the pointer-type names begin with a prefix of P or LP. Handles refer to a resource that has been loaded into memory.

For more information about handling 64-bit integers, see Large Integers.

TypeDescription
APIENTRY

Calling convention for system functions.

This type is declared in WinDef.h as follows:

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#define APIENTRY WINAPI


ATOM

Atom. For more information, see Atoms.

This type is declared in WinDef.h as follows:

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typedef WORD ATOM;


BOOL

Boolean variable (should be TRUE or FALSE).

This type is declared in WinDef.h as follows:

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typedef int BOOL;


BOOLEAN

Boolean variable (should be TRUE or FALSE).

This type is declared in WinNT.h as follows:

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typedef BYTE BOOLEAN;


BYTE

Byte (8 bits).

This type is declared in WinDef.h as follows:

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typedef unsigned char BYTE;


CALLBACK

Calling convention for callback functions.

This type is declared in WinDef.h as follows:

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#define CALLBACK __stdcall


CALLBACK, WINAPI, and APIENTRY are all used to define functions with the __stdcall calling convention. Most functions in the Windows API are declared using WINAPI. You may wish to use CALLBACK for the callback functions that you implement to help identify the function as a callback function.

CHAR

8-bit Windows (ANSI) character. For more information, see Character Sets Used By Fonts.

This type is declared in WinNT.h as follows:

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typedef char CHAR;


COLORREF

Red, green, blue (RGB) color value (32 bits). See COLORREF for information on this type.

This type is declared in WinDef.h as follows:

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typedef DWORD COLORREF;


CONST

Variable whose value is to remain constant during execution.

This type is declared in WinDef.h as follows:

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#define CONST const


DWORD

32-bit unsigned integer. The range is 0 through 4294967295 decimal.

This type is declared in WinDef.h as follows:

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typedef unsigned long DWORD;


DWORDLONG

64-bit unsigned integer. The range is 0 through 18446744073709551615 decimal.

This type is declared in WinNT.h as follows:

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typedef ULONGLONG DWORDLONG;


DWORD_PTR

Unsigned long type for pointer precision. Use when casting a pointer to a long type to perform pointer arithmetic. (Also commonly used for general 32-bit parameters that have been extended to 64 bits in 64-bit Windows.)

This type is declared in BaseTsd.h as follows:

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typedef ULONG_PTR DWORD_PTR;


DWORD32

32-bit unsigned integer.

This type is declared in BaseTsd.h as follows:

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typedef unsigned int DWORD32;


DWORD64

64-bit unsigned integer.

This type is declared in BaseTsd.h as follows:

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typedef unsigned __int64 DWORD64;


FLOAT

Floating-point variable.

This type is declared in WinDef.h as follows:

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typedef float FLOAT;


HACCEL

Handle to an accelerator table.

This type is declared in WinDef.h as follows:

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typedef HANDLE HACCEL;


HALF_PTR

Half the size of a pointer. Use within a structure that contains a pointer and two small fields.

This type is declared in Basetsd.h as follows:

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#ifdef _WIN64
typedef int HALF_PTR;
#else
typedef short HALF_PTR;
#endif


HANDLE

Handle to an object.

This type is declared in WinNT.h as follows:

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typedef PVOID HANDLE;


HBITMAP

Handle to a bitmap.

This type is declared in WinDef.h as follows:

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typedef HANDLE HBITMAP;


HBRUSH

Handle to a brush.

This type is declared in WinDef.h as follows:

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typedef HANDLE HBRUSH;


HCOLORSPACE

Handle to a color space.

This type is declared in WinDef.h as follows:

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#if(WINVER >= 0x0400)
typedef HANDLE HCOLORSPACE;
#endif


HCONV

Handle to a dynamic data exchange (DDE) conversation.

This type is declared in Ddeml.h as follows:

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typedef HANDLE HCONV;


HCONVLIST

Handle to a DDE conversation list.

This type is declared in Ddeml.h as follows:

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typedef HANDLE HCONVLIST;


HCURSOR

Handle to a cursor.

This type is declared in WinDef.h as follows:

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typedef HICON HCURSOR;


HDC

Handle to a device context (DC).

This type is declared in WinDef.h as follows:

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typedef HANDLE HDC;


HDDEDATA

Handle to DDE data.

This type is declared in Ddeml.h as follows:

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typedef HANDLE HDDEDATA;


HDESK

Handle to a desktop.

This type is declared in WinDef.h as follows:

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typedef HANDLE HDESK;


HDROP

Handle to an internal drop structure.

This type is declared in ShellApi.h as follows:

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typedef HANDLE HDROP;


HDWP

Handle to a deferred window position structure.

This type is declared in WinUser.h as follows:

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typedef HANDLE HDWP;


HENHMETAFILE

Handle to an enhanced metafile.

This type is declared in WinDef.h as follows:

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typedef HANDLE HENHMETAFILE;


HFILE

Handle to a file opened by OpenFile, not CreateFile.

This type is declared in WinDef.h as follows:

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typedef int HFILE;


HFONT

Handle to a font.

This type is declared in WinDef.h as follows:

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typedef HANDLE HFONT;


HGDIOBJ

Handle to a GDI object.

This type is declared in WinDef.h as follows:

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typedef HANDLE HGDIOBJ;


HGLOBAL

Handle to a global memory block.

This type is declared in WinDef.h as follows:

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typedef HANDLE HGLOBAL;


HHOOK

Handle to a hook.

This type is declared in WinDef.h as follows:

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typedef HANDLE HHOOK;


HICON

Handle to an icon.

This type is declared in WinDef.h as follows:

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typedef HANDLE HICON;


HINSTANCE

Handle to an instance. This is the base address of the module in memory.

HMODULE and HINSTANCE are the same today, but represented different things in 16-bit Windows.

This type is declared in WinDef.h as follows:

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typedef HANDLE HINSTANCE;


HKEY

Handle to a registry key.

This type is declared in WinDef.h as follows:

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typedef HANDLE HKEY;


HKL

Input locale identifier.

This type is declared in WinDef.h as follows:

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typedef HANDLE HKL;


HLOCAL

Handle to a local memory block.

This type is declared in WinDef.h as follows:

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typedef HANDLE HLOCAL;


HMENU

Handle to a menu.

This type is declared in WinDef.h as follows:

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typedef HANDLE HMENU;


HMETAFILE

Handle to a metafile.

This type is declared in WinDef.h as follows:

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typedef HANDLE HMETAFILE;


HMODULE

Handle to a module. The is the base address of the module in memory.

HMODULE and HINSTANCE are the same today, but represented different things in 16-bit Windows.

This type is declared in WinDef.h as follows:

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typedef HINSTANCE HMODULE;


HMONITOR

Handle to a display monitor.

This type is declared in WinDef.h as follows:

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if(WINVER >= 0x0500) typedef HANDLE HMONITOR;


HPALETTE

Handle to a palette.

This type is declared in WinDef.h as follows:

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typedef HANDLE HPALETTE;


HPEN

Handle to a pen.

This type is declared in WinDef.h as follows:

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typedef HANDLE HPEN;


HRESULT

Return code used by COM interfaces. For more information, see Structure of the COM Error Codes. To test an HRESULT value, use the FAILED and SUCCEEDED macros.

This type is declared in WinNT.h as follows:

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typedef LONG HRESULT;


HRGN

Handle to a region.

This type is declared in WinDef.h as follows:

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typedef HANDLE HRGN;


HRSRC

Handle to a resource.

This type is declared in WinDef.h as follows:

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typedef HANDLE HRSRC;


HSZ

Handle to a DDE string.

This type is declared in Ddeml.h as follows:

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typedef HANDLE HSZ;


HWINSTA

Handle to a window station.

This type is declared in WinDef.h as follows:

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typedef HANDLE WINSTA;


HWND

Handle to a window.

This type is declared in WinDef.h as follows:

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typedef HANDLE HWND;


INT

32-bit signed integer. The range is -2147483648 through 2147483647 decimal.

This type is declared in WinDef.h as follows:

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typedef int INT;


INT_PTR

Signed integer type for pointer precision. Use when casting a pointer to an integer to perform pointer arithmetic.

This type is declared in BaseTsd.h as follows:

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#if defined(_WIN64)
typedef __int64 INT_PTR;
#else
typedef int INT_PTR;
#endif


INT32

32-bit signed integer. The range is -2147483648 through 2147483647 decimal.

This type is declared in BaseTsd.h as follows:

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typedef signed int INT32;


INT64

64-bit signed integer. The range is –9223372036854775808 through 9223372036854775807 decimal.

This type is declared in BaseTsd.h as follows:

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typedef signed __int64 INT64;


LANGID

Language identifier. For more information, see Locales.

This type is declared in WinNT.h as follows:

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typedef WORD LANGID;


LCID

Locale identifier. For more information, see Locales.

This type is declared in WinNT.h as follows:

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typedef DWORD LCID;


LCTYPE

Locale information type. For a list, see Locale Information Constants.

This type is declared in WinNls.h as follows:

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typedef DWORD LCTYPE;


LGRPID

Language group identifier. For a list, see EnumLanguageGroupLocales.

This type is declared in WinNls.h as follows:

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typedef DWORD LGRPID;


LONG

32-bit signed integer. The range is –2147483648 through 2147483647 decimal.

This type is declared in WinNT.h as follows:

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typedef long LONG;


LONGLONG

64-bit signed integer. The range is –9223372036854775808 through 9223372036854775807 decimal.

This type is declared in WinNT.h as follows:

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#if !defined(_M_IX86)
typedef __int64 LONGLONG;
#else
typedef double LONGLONG;
#endif


LONG_PTR

Signed long type for pointer precision. Use when casting a pointer to a long to perform pointer arithmetic.

This type is declared in BaseTsd.h as follows:

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#if defined(_WIN64)
typedef __int64 LONG_PTR;
#else
typedef long LONG_PTR;
#endif


LONG32

32-bit signed integer. The range is –2147483648 through 2147483647 decimal.

This type is declared in BaseTsd.h as follows:

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typedef signed int LONG32;


LONG64

64-bit signed integer. The range is –9223372036854775808 through 9223372036854775807 decimal.

This type is declared in BaseTsd.h as follows:

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typedef __int64 LONG64;


LPARAM

Message parameter.

This type is declared in WinDef.h as follows:

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typedef LONG_PTR LPARAM;


LPBOOL

Pointer to a BOOL.

This type is declared in WinDef.h as follows:

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typedef BOOL far *LPBOOL;


LPBYTE

Pointer to a BYTE.

This type is declared in WinDef.h as follows:

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typedef BYTE far *LPBYTE;


LPCOLORREF

Pointer to a COLORREF value.

This type is declared in WinDef.h as follows:

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typedef DWORD *LPCOLORREF;


LPCSTR

Pointer to a constant null-terminated string of 8-bit Windows (ANSI) characters. For more information, see Character Sets Used By Fonts.

This type is declared in WinNT.h as follows:

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typedef __nullterminated CONST CHAR *LPCSTR;


LPCTSTR

An LPCWSTR if UNICODE is defined, an LPCSTR otherwise.

This type is declared in WinNT.h as follows:

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#ifdef UNICODE
typedef LPCWSTR LPCTSTR;
#else
typedef LPCSTR LPCTSTR;
#endif


LPCVOID

Pointer to a constant of any type.

This type is declared in WinDef.h as follows:

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typedef CONST void *LPCVOID;


LPCWSTR

Pointer to a constant null-terminated string of 16-bit Unicode characters. For more information, see Character Sets Used By Fonts.

This type is declared in WinNT.h as follows:

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typedef CONST WCHAR *LPCWSTR;


LPDWORD

Pointer to a DWORD.

This type is declared in WinDef.h as follows:

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typedef DWORD *LPDWORD;


LPHANDLE

Pointer to a HANDLE.

This type is declared in WinDef.h as follows:

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typedef HANDLE *LPHANDLE;


LPINT

Pointer to an INT.

This type is declared in WinDef.h as follows:

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typedef int *LPINT;


LPLONG

Pointer to a LONG.

This type is declared in WinDef.h as follows:

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typedef long *LPLONG;


LPSTR

Pointer to a null-terminated string of 8-bit Windows (ANSI) characters. For more information, see Character Sets Used By Fonts.

This type is declared in WinNT.h as follows:

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typedef CHAR *LPSTR;


LPTSTR

An LPWSTR if UNICODE is defined, an LPSTR otherwise.

This type is declared in WinNT.h as follows:

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#ifdef UNICODE
typedef LPWSTR LPTSTR;
#else
typedef LPSTR LPTSTR;
#endif


LPVOID

Pointer to any type.

This type is declared in WinDef.h as follows:

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typedef void *LPVOID;


LPWORD

Pointer to a WORD.

This type is declared in WinDef.h as follows:

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typedef WORD *LPWORD;


LPWSTR

Pointer to a null-terminated string of 16-bit Unicode characters. For more information, see Character Sets Used By Fonts.

This type is declared in WinNT.h as follows:

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typedef WCHAR *LPWSTR;


LRESULT

Signed result of message processing.

This type is declared in WinDef.h as follows:

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typedef LONG_PTR LRESULT;


PBOOL

Pointer to a BOOL.

This type is declared in WinDef.h as follows:

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typedef BOOL *PBOOL;


PBOOLEAN

Pointer to a BOOL.

This type is declared in WinNT.h as follows:

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typedef BOOLEAN *PBOOLEAN;


PBYTE

Pointer to a BYTE.

This type is declared in WinDef.h as follows:

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typedef BYTE *PBYTE;


PCHAR

Pointer to a CHAR.

This type is declared in WinNT.h as follows:

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typedef CHAR *PCHAR;


PCSTR

Pointer to a constant null-terminated string of 8-bit Windows (ANSI) characters. For more information, see Character Sets Used By Fonts.

This type is declared in WinNT.h as follows:

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typedef CONST CHAR *PCSTR;


PCTSTR

A PCWSTR if UNICODE is defined, a PCSTR otherwise.

This type is declared in WinNT.h as follows:

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#ifdef UNICODE
typedef LPCWSTR PCTSTR;
#else
typedef LPCSTR PCTSTR;
#endif


PCWSTR

Pointer to a constant null-terminated string of 16-bit Unicode characters. For more information, see Character Sets Used By Fonts.

This type is declared in WinNT.h as follows:

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typedef CONST WCHAR *PCWSTR;


PDWORD

Pointer to a DWORD.

This type is declared in WinDef.h as follows:

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typedef DWORD *PDWORD;


PDWORDLONG

Pointer to a DWORDLONG.

This type is declared in WinNT.h as follows:

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typedef DWORDLONG *PDWORDLONG;


PDWORD_PTR

Pointer to a DWORD_PTR.

This type is declared in BaseTsd.h as follows:

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typedef DWORD_PTR *PDWORD_PTR;


PDWORD32

Pointer to a DWORD32.

This type is declared in BaseTsd.h as follows:

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typedef DWORD32 *PDWORD32;


PDWORD64

Pointer to a DWORD64.

This type is declared in BaseTsd.h as follows:

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typedef DWORD64 *PDWORD64;


PFLOAT

Pointer to a FLOAT.

This type is declared in WinDef.h as follows:

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typedef FLOAT *PFLOAT;


PHALF_PTR

Pointer to a HALF_PTR.

This type is declared in Basetsd.h as follows:

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#ifdef _WIN64
typedef HALF_PTR *PHALF_PTR;
#else
typedef HALF_PTR *PHALF_PTR;
#endif


PHANDLE

Pointer to a HANDLE.

This type is declared in WinNT.h as follows:

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typedef HANDLE *PHANDLE;


PHKEY

Pointer to an HKEY.

This type is declared in WinDef.h as follows:

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typedef HKEY *PHKEY;


PINT

Pointer to an INT.

This type is declared in WinDef.h as follows:

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typedef int *PINT;


PINT_PTR

Pointer to an INT_PTR.

This type is declared in BaseTsd.h as follows:

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typedef INT_PTR *PINT_PTR;


PINT32

Pointer to an INT32.

This type is declared in BaseTsd.h as follows:

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typedef INT32 *PINT32;


PINT64

Pointer to an INT64.

This type is declared in BaseTsd.h as follows:

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typedef INT64 *PINT64;


PLCID

Pointer to an LCID.

This type is declared in WinNT.h as follows:

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typedef PDWORD PLCID;


PLONG

Pointer to a LONG.

This type is declared in WinNT.h as follows:

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typedef LONG *PLONG;


PLONGLONG

Pointer to a LONGLONG.

This type is declared in WinNT.h as follows:

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typedef LONGLONG *PLONGLONG;


PLONG_PTR

Pointer to a LONG_PTR.

This type is declared in BaseTsd.h as follows:

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typedef LONG_PTR *PLONG_PTR;


PLONG32

Pointer to a LONG32.

This type is declared in BaseTsd.h as follows:

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typedef LONG32 *PLONG32;


PLONG64

Pointer to a LONG64.

This type is declared in BaseTsd.h as follows:

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typedef LONG64 *PLONG64;


POINTER_32

32-bit pointer. On a 32-bit system, this is a native pointer. On a 64-bit system, this is a truncated 64-bit pointer.

This type is declared in BaseTsd.h as follows:

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#if defined(_WIN64)
#define POINTER_32 __ptr32
#else
#define POINTER_32
#endif


POINTER_64

64-bit pointer. On a 64-bit system, this is a native pointer. On a 32-bit system, this is a sign-extended 32-bit pointer.

Note that it is not safe to assume the state of the high pointer bit.

This type is declared in BaseTsd.h as follows:

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#if (_MSC_VER >= 1300)
#define POINTER_64 __ptr64
#else
#define POINTER_64
#endif


POINTER_SIGNED

A signed pointer.

This type is declared in BaseTsd.h as follows:

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#define POINTER_SIGNED __sptr


POINTER_UNSIGNED

An unsigned pointer.

This type is declared in BaseTsd.h as follows:

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#define POINTER_UNSIGNED __uptr


PSHORT

Pointer to a SHORT.

This type is declared in WinNT.h as follows:

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typedef SHORT *PSHORT;


PSIZE_T

Pointer to a SIZE_T.

This type is declared in BaseTsd.h as follows:

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typedef SIZE_T *PSIZE_T;


PSSIZE_T

Pointer to a SSIZE_T.

This type is declared in BaseTsd.h as follows:

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typedef SSIZE_T *PSSIZE_T;


PSTR

Pointer to a null-terminated string of 8-bit Windows (ANSI) characters. For more information, see Character Sets Used By Fonts.

This type is declared in WinNT.h as follows:

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typedef CHAR *PSTR;


PTBYTE

Pointer to a TBYTE.

This type is declared in WinNT.h as follows:

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typedef TBYTE *PTBYTE;


PTCHAR

Pointer to a TCHAR.

This type is declared in WinNT.h as follows:

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typedef TCHAR *PTCHAR;


PTSTR

A PWSTR if UNICODE is defined, a PSTR otherwise.

This type is declared in WinNT.h as follows:

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#ifdef UNICODE
typedef LPWSTR PTSTR;
#else typedef LPSTR PTSTR;
#endif


PUCHAR

Pointer to a UCHAR.

This type is declared in WinDef.h as follows:

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typedef UCHAR *PUCHAR;


PUHALF_PTR

Pointer to a UHALF_PTR.

This type is declared in Basetsd.h as follows:

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#ifdef _WIN64
typedef UHALF_PTR *PUHALF_PTR;
#else
typedef UHALF_PTR *PUHALF_PTR;
#endif


PUINT

Pointer to a UINT.

This type is declared in WinDef.h as follows:

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typedef UINT *PUINT;


PUINT_PTR

Pointer to a UINT_PTR.

This type is declared in BaseTsd.h as follows:

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typedef UINT_PTR *PUINT_PTR;


PUINT32

Pointer to a UINT32.

This type is declared in BaseTsd.h as follows:

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typedef UINT32 *PUINT32;


PUINT64

Pointer to a UINT64.

This type is declared in BaseTsd.h as follows:

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typedef UINT64 *PUINT64;


PULONG

Pointer to a ULONG.

This type is declared in WinDef.h as follows:

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typedef ULONG *PULONG;


PULONGLONG

Pointer to a ULONGLONG.

This type is declared in WinDef.h as follows:

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typedef ULONGLONG *PULONGLONG;


PULONG_PTR

Pointer to a ULONG_PTR.

This type is declared in BaseTsd.h as follows:

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typedef ULONG_PTR *PULONG_PTR;


PULONG32

Pointer to a ULONG32.

This type is declared in BaseTsd.h as follows:

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typedef ULONG32 *PULONG32;


PULONG64

Pointer to a ULONG64.

This type is declared in BaseTsd.h as follows:

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typedef ULONG64 *PULONG64;


PUSHORT

Pointer to a USHORT.

This type is declared in WinDef.h as follows:

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typedef USHORT *PUSHORT;


PVOID

Pointer to any type.

This type is declared in WinNT.h as follows:

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typedef void *PVOID;


PWCHAR

Pointer to a WCHAR.

This type is declared in WinNT.h as follows:

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typedef WCHAR *PWCHAR;


PWORD

Pointer to a WORD.

This type is declared in WinDef.h as follows:

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typedef WORD *PWORD;


PWSTR

Pointer to a null- terminated string of 16-bit Unicode characters. For more information, see Character Sets Used By Fonts.

This type is declared in WinNT.h as follows:

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typedef WCHAR *PWSTR;


SC_HANDLE

Handle to a service control manager database. For more information, see SCM Handles.

This type is declared in WinSvc.h as follows:

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typedef HANDLE SC_HANDLE;


SC_LOCK

Lock to a service control manager database. For more information, see SCM Handles.

This type is declared in WinSvc.h as follows:

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typedef LPVOID SC_LOCK;


SERVICE_STATUS_HANDLE

Handle to a service status value. For more information, see SCM Handles.

This type is declared in WinSvc.h as follows:

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typedef HANDLE SERVICE_STATUS_HANDLE;


SHORT

A 16-bit integer. The range is –32768 through 32767 decimal.

This type is declared in WinNT.h as follows:

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typedef short SHORT;


SIZE_T

The maximum number of bytes to which a pointer can point. Use for a count that must span the full range of a pointer.

This type is declared in BaseTsd.h as follows:

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typedef ULONG_PTR SIZE_T;


SSIZE_T

Signed SIZE_T.

This type is declared in BaseTsd.h as follows:

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typedef LONG_PTR SSIZE_T;


TBYTE

A WCHAR if UNICODE is defined, a CHAR otherwise.

This type is declared in WinNT.h as follows:

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#ifdef UNICODE
typedef WCHAR TBYTE;
#else
typedef unsigned char TBYTE;
#endif


TCHAR

A WCHAR if UNICODE is defined, a CHAR otherwise.

This type is declared in WinNT.h as follows:

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#ifdef UNICODE
typedef WCHAR TCHAR;
#else
typedef char TCHAR;
#endif


UCHAR

Unsigned CHAR.

This type is declared in WinDef.h as follows:

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typedef unsigned char UCHAR;


UHALF_PTR

Unsigned HALF_PTR. Use within a structure that contains a pointer and two small fields.

This type is declared in Basetsd.h as follows:

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#ifdef _WIN64
typedef unsigned int UHALF_PTR;
#else
typedef unsigned short UHALF_PTR;
#endif


UINT

Unsigned INT. The range is 0 through 4294967295 decimal.

This type is declared in WinDef.h as follows:

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typedef unsigned int UINT;


UINT_PTR

Unsigned INT_PTR.

This type is declared in BaseTsd.h as follows:

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#if defined(_WIN64)
typedef unsigned __int64 UINT_PTR;
#else
typedef unsigned int UINT_PTR;
#endif


UINT32

Unsigned INT32. The range is 0 through 4294967295 decimal.

This type is declared in BaseTsd.h as follows:

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typedef unsigned int UINT32;


UINT64

Unsigned INT64. The range is 0 through 18446744073709551615 decimal.

This type is declared in BaseTsd.h as follows:

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typedef usigned __int 64 UINT64;


ULONG

Unsigned LONG. The range is 0 through 4294967295 decimal.

This type is declared in WinDef.h as follows:

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typedef unsigned long ULONG;


ULONGLONG

64-bit unsigned integer. The range is 0 through 18446744073709551615 decimal.

This type is declared in WinNT.h as follows:

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#if !defined(_M_IX86)
typedef unsigned __int64 ULONGLONG;
#else
typedef double ULONGLONG;
#endif


ULONG_PTR

Unsigned LONG_PTR.

This type is declared in BaseTsd.h as follows:

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#if defined(_WIN64)
typedef unsigned __int64 ULONG_PTR;
#else
typedef unsigned long ULONG_PTR;
#endif


ULONG32

Unsigned LONG32. The range is 0 through 4294967295 decimal.

This type is declared in BaseTsd.h as follows:

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typedef unsigned int ULONG32;


ULONG64

Unsigned LONG64. The range is 0 through 18446744073709551615 decimal.

This type is declared in BaseTsd.h as follows:

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typedef unsigned __int64 ULONG64;


UNICODE_STRING

A Unicode string.

This type is declared in Winternl.h as follows:

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typedef struct _UNICODE_STRING {
USHORT  Length;
USHORT  MaximumLength;
PWSTR  Buffer;
} UNICODE_STRING;
typedef UNICODE_STRING *PUNICODE_STRING;
typedef const UNICODE_STRING *PCUNICODE_STRING;


USHORT

Unsigned SHORT. The range is 0 through 65535 decimal.

This type is declared in WinDef.h as follows:

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typedef unsigned short USHORT;


USN

Update sequence number (USN).

This type is declared in WinNT.h as follows:

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typedef LONGLONG USN;


VOID

Any type.

This type is declared in WinNT.h as follows:

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#define VOID void


WCHAR

16-bit Unicode character. For more information, see Character Sets Used By Fonts.

This type is declared in WinNT.h as follows:

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typedef wchar_t WCHAR;


WINAPI

Calling convention for system functions.

This type is declared in WinDef.h as follows:

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#define WINAPI __stdcall


CALLBACK, WINAPI, and APIENTRY are all used to define functions with the __stdcall calling convention. Most functions in the Windows API are declared using WINAPI. You may wish to use CALLBACK for the callback functions that you implement to help identify the function as a callback function.

WORD

16-bit unsigned integer. The range is 0 through 65535 decimal.

This type is declared in WinDef.h as follows:

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typedef unsigned short WORD;


WPARAM

Message parameter.

This type is declared in WinDef.h as follows:

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typedef UINT_PTR WPARAM;


Build date: 3/26/2010

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LONGLONG - defined via double? Edit

LONGLONG

64-bit signed integer. The range is –9223372036854775808 through 9223372036854775807 decimal.

This type is declared in WinNT.h as follows:

#if !defined(_M_IX86)

typedef __int64 LONGLONG;

#else

typedef double LONGLONG;

#endif


Is it in above is typing error?
The datatype "double" is defined:

Type double is a floating type that is larger than or equal to type float, but shorter than or equal to the size of type longdouble.1 http://msdn.microsoft.com/en-us/library/cc953fe1.aspx
History







3/16/2010

u_margus





3/16/2010

u_margus

HWND can't be read Edit
Note that
though HWND is a "pointer to void *"
or (in the VBasic example) an IntPtr (pointer to an int)

you can't actually read the value it points to, or write to that location. It's just a pointer into some deep dark windows data structure, and the fact that it points into that exact location is all it gives you. You'll get a memory read exception if you try to read from that location.

History







3/1/2010

rogerdpack

Visual Basic 9 Equivalents for PInvoke Edit

MSDN Type Visual Basic 9 Type
ATOM UShort
BOOL Integer
BOOLEAN Byte
BYTE Byte
CALLBACK Delegate
CHAR SByte
COLORREF UInteger
CONST Const
DWORD UInteger
DWORDLONG ULong
DWORD_PTR UInteger (ULong)
DWORD32 UInteger
DWORD64 Long
FLOAT Single
HACCEL IntPtr
HALF_PTR Short (Integer)
HANDLE IntPtr
HBITMAP IntPtr
HBRUSH IntPtr
HCONV IntPtr
HCONVLIST IntPtr
HCURSOR IntPtr
HDC IntPtr
HDDEDATA IntPtr
HDESK IntPtr
HDROP IntPtr
HDWP IntPtr
HENHMETAFILE IntPtr
HFILE Integer
HFONT IntPtr
HGIDOBJ IntPtr
HGLOBAL IntPtr
HHOOK IntPtr
HICON IntPtr
HINSTANCE IntPtr
HKEY IntPtr
HKL IntPtr
HLOCAL IntPtr
HMENU IntPtr
HMETAFILE IntPtr
HMODULE IntPtr
HMONITOR IntPtr
HPALETTE IntPtr
HPEN IntPtr
HRESULT Integer
HRGN IntPtr
HRSRC IntPtr
HSZ IntPtr
HWINSTA IntPtr
HWND IntPtr
INT_PTR Integer (Long)
INT32 Integer
INT64 Long
LANGID UShort
LCID UInteger
LGRPID UInteger
LONG Integer
LONGLONG Long
LONG_PTR Integer (Long)
LONG32 Integer
LONG64 Long
LPARAM Integer (Long)
LPBOOL ByRef Integer
LPBYTE ByRef Byte
LPCOLORREF UInteger
LPCSTR ByRef SByte
LPCTSTR ByRef Char
LPCWSTR ByRef Char
LPDWORD UInteger
LPHANDLE ByRef IntPtr
LPINT Integer (Long)
LPLONG Integer
LPSTR ByRef SByte
LPTSTR ByRef Char
LPVOID IntPtr
LPWORD UShort
LPWSTR ByRef Char
LRESULT Integer (Long)
PBOOL Integer (Long)
PBOOLEAN ByRef Byte
PBYTE ByRef Byte
PCHAR ByRef SByte
PCSTR ByRef SByte
PCTSTR ByRef Char
PCWSTR ByRef Char
PDWORD UInteger
PDWORDLONG ByRef ULong
PDWORD_PTR ByRef UInteger (ULong)
PDWORD32 ByRef UInteger
PDWORD64 ByRef Long
PFLOAT ByRef Single
PHALF_PTR ByRef Short (Integer)
PHANDLE ByRef IntPtr
PHKEY ByRef IntPtr
PINT Integer (Long)
PINT_PTR ByRef Integer (Long)
PINT32 ByRef Integer
PINT64 ByRef Long
PLCID UInteger
PLONG Integer
PLONGLONG ByRef Long
PLONG_PTR ByRef Integer (Long)
PLONG32 ByRef Integer
PLONG64 ByRef Long
POINTER_32 (IntPtr)
POINTER_64 IntPtr
POINTER_SIGNED IntPtr
POINTER_UNSIGNED UIntPtr
PSHORT Short
PSIZE_T ByRef UInteger (ULong)
PSSIZE_T ByRef Integer (Long)
PSTR ByRef SByte
PTBYTE ByRef Char
PTCHAR ByRef Char
PTSTR ByRef Char
PUCHAR ByRef Byte
PUHALF_PTR ByRef UShort (UInteger)
PUINT ByRef UInteger
PUINT_PTR ByRef UInteger (ULong)
PUINT32 ByRef UInteger
PUINT64 ByRef ULong
PULONG UInteger
PULONGLONG ByRef ULong
PULONG_PTR ByRef UInteger (ULong)
PULONG32 ByRef UInteger
PULONG64 ByRef ULong
PUSHORT UShort
PVOID IntPtr
PWCHAR ByRef Char
PWORD UShort
PWSTR ByRef Char
SC_HANDLE IntPtr
SC_LOCK IntPtr
SERVICE_STATUS_HANDLE IntPtr
SHORT Short
SIZE_T UInteger (ULong)
SSIZE_T Integer (Long)
TBYTE Char
TCHAR Char
UCHAR Byte
UHALF_PTR UShort (UInteger)
UINT UInteger
UINT_PTR UInteger (ULong)
UINT32 UInteger
UINT64 ULong
ULONG UInteger
ULONGLONG ULong
ULONG_PTR UInteger (ULong)
ULONG32 UInteger
ULONG64 ULong
UNICODE_STRING Structure UNICODE_STRING : Dim Lenght As UShort, MaximumLenght As UShort, ByRef Buffer As Char : End Structure
USHORT UShort
USN Long
VOID Object
WCHAR Char
WIANPI Delegate
WORD UShort
WPARAM UInteger (ULong)

2 types means 32bit plaform (64bit platform)
Assumes #Unicode directive
Assumest highest Windows version possible

See full table http://spreadsheets.google.com/ccc?key=pK5CEcdG9GYGeO7K2dmEcBg
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