delphi 如何将字符串中的半角字符转换为全角字符-木庄网络博客

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 /// 半角转全角的函数
unit Unit1;

interface

uses
  Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants,
  System.Classes, Vcl.Graphics, System.Types,
  Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls;

type
  TForm1 = class(TForm)
    Memo1: TMemo;
    Memo2: TMemo;
    Button1: TButton;
    Button2: TButton;
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}


// 半角转全角的函数
function HalfToFull(InputStr: String): String;
var
  TmpChar: Char;
  i: Integer;
begin
  for i := 1 to Length(InputStr) do
  begin
    TmpChar := InputStr[i];
    if (Ord(TmpChar) = 32) then
    begin
      InputStr[i] := Char(12288); // ' '
      Continue;
    end;
    if (Ord(TmpChar) = 46) then
    begin
      InputStr[i] := Char(12290); // '.'
      Continue;
    end;
    if (Ord(TmpChar) < 127) then // 其它ASCII字符
    begin
      InputStr[i] := Char(Ord(TmpChar) + 65248);
    end;
  end;
  Result := InputStr;
end;

// 全角转半角的函数
function FullToHalf(InputStr: String): String;
var
  TmpChar: Char;
  i: Integer;
begin
  for i := 1 to Length(InputStr) do
  begin
    TmpChar := InputStr[i];
    if (Ord(TmpChar) = 12288) then
    begin
      InputStr[i] := Char(32); // ' '
      Continue;
    end;
    if (Ord(TmpChar) = 12290) then
    begin
      InputStr[i] := Char(46); // '.'
      Continue;
    end;
    if (Ord(TmpChar) > 65280) and (Ord(TmpChar) < 65375) then // 其它字符
    begin
      InputStr[i] := Char(Ord(TmpChar) - 65248);
    end;
  end;
  Result := InputStr;
end;

procedure TForm1.Button1Click(Sender: TObject);
begin
  Memo2.Text := FullToHalf(Memo1.Text);
end;

procedure TForm1.Button2Click(Sender: TObject);
begin
  Memo1.Text := HalfToFull(Memo2.Text);
end;

end.
delphi 如何将字符串中的半角字符转换为全角字符

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