Ãö©óAnsiString & string ªº°ÝÃD.....

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下列是有關於AnsiString的說明....

請問有誰真的知道....string 如何轉成 AnsiString.......

請儘速回覆至作者信箱.....謝謝!!

A string represents a sequence of characters. Object Pascal supports the
following predefined string types.

Type Maximum length Memory required Used for
---------------------------------------------------------------------------------
ShortString 255 characters 2 to 256 bytes backward compatibility
AnsiString ~2^31 characters 4 bytes to 2GB 8-bit (ANSI) characters
WideString ~2^30 characters 4 bytes to 2GB Unicode characters;

//======================================================================
AnsiString

Header vcl/dstring.h

Description

C++Builder implements the AnsiString type as a class. AnsiString is

designed to function like the Delphi long string type.

Accordingly, AnsiString provides the following string handling

characteristics which are required when you call VCL-type functions

that use any of the Delphi long string types.

//======================================================================

AnsiString::AnsiString

Description

The constructor for AnsiString is overloaded as follows:

__fastcall AnsiString();

Creates an empty string.

__fastcall AnsiString(const char* src);

Creates a null-terminated string from a character array.

__fastcall AnsiString(const AnsiString& src);

(Copy constructor.) Creates a copy of an AnsiString.

__fastcall AnsiString(const char* src, unsigned char len);

Creates a null-terminated string that is a copy of the first len
characters of src. For example, if src contains the character
string ello�and len is 2, then the AnsiString that is created
would contain the null-terminated string e�

__fastcall AnsiString(const wchar_t* src);

Creates a null-terminated string from a wide character array.

__fastcall AnsiString(int src);

Creates a null-terminated string from an int. The string contains the string
representation of the int value given by src.

__fastcall AnsiString(double src);

Creates a null-terminated string from a double.
The string contains the string representation of the floating-point value
given by src. The conversion uses general number format with 15
significant digits.

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[忙..盲..茫 ..]

※ 引述《NewId...@vlsi1.iie.ncku.edu.tw (吉他手)》之銘言：
> ==> iostre...@bbs.yuntech.edu.tw (忙..盲..茫 ..) 在 oop 版提到:
> : 那你就用
> : AnsiString Temp = Test.c_str(); // 即可
> 應該是 AnsiString Temp = AnsiString(Test);

這樣不行吧 要改為

AnsiString Temp = AnsiString(Test.c_str());

AnsiString的建構元為

__fastcall AnsiString();
__fastcall AnsiString(const char* src);
__fastcall AnsiString(const AnsiString& src);

__fastcall AnsiString(const char* src, unsigned char len);

__fastcall AnsiString(const wchar_t* src);
__fastcall AnsiString(int src);
__fastcall AnsiString(double src);

__fastcall AnsiString(char src);
__fastcall AnsiString(short);
__fastcall AnsiString(unsigned short);
__fastcall AnsiString(unsigned int);
__fastcall AnsiString(long);
__fastcall AnsiString(unsigned long);
__fastcall AnsiString(__int64);
__fastcall AnsiString(unsigned __int64);
__fastcall AnsiString(const WideString &src);

並沒有std::string的type

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although I cannot see why it is so very important.
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