zoukankan      html  css  js  c++  java
  • Strem String Memory TStringStream

    System.SysUtils

    一、TStringStream方法

    Strem>String

    TMemoryStream to String

    stm: TStream;

    ss: TStringStream;

     #include "System.SysUtils.hpp"

     DataString

    image.picture.savetoStream(stm);

    ss := TStringStream.Create('', TEncoding.Unicode);

    ss.CopyFrom(stm, 0);
    str := ss.DataString;

    stm.Free;
    ss.Free;

    String>Strem

    stm: TStream;
    ss: TStringStream;

    stm := TMemoryStream.Create;
    ss := TStringStream.Create('', TEncoding.Unicode);

    ss.WriteString(str);

    ss.Position := 0;

    stm.CopyFrom(ss, ss.Size);

    stm.Position := 0;

    c++

     TStringStream *ss = new TStringStream("", System::Sysutils::TEncoding::UTF8, false);

    二、TBytes和stringof转换

    Strem>String

      abyte: TBytes;

    SetLength(abyte, stm.Size);
    stm.Read(abyte, stm.Size);
    str := stringof(abyte);

    String>Strem

    abyte := BytesOf(gstr);
    stm.Write(abyte, Length(abyte));

    stm.Position := 0;
    img.picture.LoadFromStream(stm);

    function BytesOf(const Val: UnicodeString): TBytes;
    begin
    Result := TEncoding.Default.GetBytes(Val);
    end;

    function StringOf(const Bytes: TBytes): UnicodeString;
    begin
    if Assigned(Bytes) then
    Result := TEncoding.Default.GetString(Bytes, Low(Bytes), High(Bytes) + 1)
    else
    Result := '';
    end;

  • 相关阅读:
    if
    C#
    C#
    C#
    .net 5.0
    .net 5.0
    .net 5.0
    设计模式
    GAN网络中采用导向滤波的论文
    pytorch~多loss的选择
  • 原文地址:https://www.cnblogs.com/cb168/p/4443814.html
Copyright © 2011-2022 走看看