Windows.pas{$EXTERNALSYM WCHAR} 什么意思?

catfather46 2005-08-19 04:13:02

下面是Windows.pas中的片段，请问类似{$EXTERNALSYM WCHAR}这些的语句是干什么的，什么意思？

WCHAR = WideChar;
{$EXTERNALSYM WCHAR}
PWChar = PWideChar;

LPSTR = PAnsiChar;
{$EXTERNALSYM LPSTR}
PLPSTR = ^LPSTR;
{$EXTERNALSYM PLPSTR}
LPCSTR = PAnsiChar;
{$EXTERNALSYM LPCSTR}
LPCTSTR = PAnsiChar; { should be PWideChar if UNICODE }
{$EXTERNALSYM LPCTSTR}
LPTSTR = PAnsiChar; { should be PWideChar if UNICODE }

...全文

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catfather46 2005-09-15

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怎么久了。。。。。。。。。没人回答吗？

catfather46 2005-09-02

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哪位大哥能不能解释清楚一点？

catfather46 2005-09-01

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WCHAR = WideChar;
{$EXTERNALSYM WCHAR}

还是不太明白？！WCHAR好象就不是什么specified Pascal symbol

有必要{$EXTERNALSYM WCHAR}这句话吧？！

说实在，英语水平有限，还是看不太明白？！

g961681 2005-09-01

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The EXTERNALSYM directive prevents the specified Pascal symbol from appearing in header files generated for C++Builder. If an overloaded routine is specified, all versions of the routine are excluded from the header file.

catfather46 2005-09-01