CSimpleStringT::operator PCXSTR
在 CSimpleStringT 对象存储的直接访问字符.作为c样式字符串。
operator PCXSTR( ) const throw( );
返回值
对字符串数据的一个字符的指针。
备注
字符不会复制;仅指针返回。 此运算符小心。 如果更改 CString 对象，在获得的字符指针后，可能导致无效指针内存的重新发布。
示例
下面的示例演示如何使用 CSimpleStringT::operator PCXSTR。
// If the prototype of a function is known to the compiler,
// the PCXSTR cast operator may be invoked implicitly.
CSimpleString strSports(L"Soccer is Best!", pMgr);
WCHAR sz[1024];
wcscpy_s(sz, strSports);
// If the prototype isn't known or is a va_arg prototype,
// you must invoke the cast operator explicitly. For example,
// the va_arg part of a call to swprintf_s() needs the cast:
swprintf_s(sz, 1024, L"I think that %s!\n", (PCWSTR)strSports);
// While the format parameter is known to be an PCXSTR and
// therefore doesn't need the cast:
swprintf_s(sz, 1024, strSports);
// Note that some situations are ambiguous. This line will
// put the address of the strSports object to stdout:
wcout << strSports;
// while this line will put the content of the string out:
wcout << (PCWSTR)strSports;
要求
Header: atlsimpstr.h