FileRead取出字串放入動態string |
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缺席
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kensoong
初階會員   發表：31 回覆：70 積分：45 註冊：2003-05-28 發送簡訊給我 |
請教各位專家,謝謝... Buffer : string 型態
fhandle := FileOpen(PATHNAME '\' filename, fmShareDenyNone); iLength := FileSeek(fhandle,0,2); FileSeek(fhandle,0,0); SetLength(Buffer, iLength 1); Buffer[iLength] := #0; iBytesRead := FileRead(fhandle, Buffer, iLength ); FileClose(fhandle);iLength > 256,但是卻發現FileRead變成超大值,Buffer也有問題. ps:Buffer如何變成Long String ?這樣就可以了嗎? 謝謝各位... |
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allenchan
資深會員 發表：10 回覆：306 積分：283 註冊：2004-01-06 發送簡訊給我 |
引言: Buffer : string 型態 ps:Buffer如何變成Long String ?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; multi-user servers and multi-language applications AnsiString, sometimes called the long string, is the preferred type for most purposes. String types can be mixed in assignments and expressions; the compiler automatically performs required conversions. But strings passed by reference to a function or procedure (as var and out parameters) must be of the appropriate type. Strings can be explicitly cast to a different string type (see Typecasts). The reserved word string functions like a generic type identifier. For example, var S: string;
creates a variable S that holds a string. In the default {$H＋} state, the compiler interprets string
(when it appears without a bracketed number after it) as AnsiString. Use the {$H-} directive to
turn string into ShortString.
發表人 - allenchan 於 2004/11/24 13:59:56
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kensoong
初階會員 發表：31 回覆：70 積分：45 註冊：2003-05-28 發送簡訊給我 |
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allenchan
資深會員 發表：10 回覆：306 積分：283 註冊：2004-01-06 發送簡訊給我 |
發表時間：2004-11-24 12:38:18
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