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----  SDK 和 MFC 中常用数据类型汇总  (http://bbs.xml.org.cn/dispbbs.asp?boardid=26&rootid=&id=12389)


--  作者:卷积内核
--  发布时间:11/30/2004 11:08:00 AM

--  SDK 和 MFC 中常用数据类型汇总

Commonly used Windows SDK and MFC data types are as follows:

BOOL   A Boolean value.


BSTR   A 32-bit character pointer.


BYTE   An 8-bit integer that is not signed.


COLORREF   A 32-bit value used as a color value.


DWORD   A 32-bit unsigned integer or the address of a segment and its associated offset.


LONG   A 32-bit signed integer.


LPARAM   A 32-bit value passed as a parameter to a window procedure or callback function.


LPCSTR   A 32-bit pointer to a constant character string.


LPSTR   A 32-bit pointer to a character string.


LPCTSTR   A 32-bit pointer to a constant character string that is portable for Unicode and DBCS.


LPTSTR   A 32-bit pointer to a character string that is portable for Unicode and DBCS.


LPVOID   A 32-bit pointer to an unspecified type.


LRESULT   A 32-bit value returned from a window procedure or callback function.


UINT   A 16-bit unsigned integer on Windows versions 3.0 and 3.1; a 32-bit unsigned integer on Win32.


WNDPROC   A 32-bit pointer to a window procedure.


WORD   A 16-bit unsigned integer.


WPARAM   A value passed as a parameter to a window procedure or callback function: 16 bits on Windows versions 3.0 and 3.1; 32 bits on Win32.
Data types unique to the Microsoft Foundation Class Library include the following:

POSITION   A value used to denote the position of an element in a collection; used by MFC collection classes.


LPCRECT   A 32-bit pointer to a constant (nonmodifiable) RECT structure.


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