Delphi中实现汉字拼音声母查询

Delphi中实现汉字拼音声母查询,unit代码如下：

unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
  StdCtrls;

type
  TForm1 = class(TForm)
ListBox1: TListBox;
ListBox2: TListBox;
Edit1: TEdit;
Label1: TLabel;
procedure Edit1Change(Sender: TObject);
procedure FormShow(Sender: TObject);
procedure FormDestroy(Sender: TObject);
procedure Edit1Enter(Sender: TObject);
procedure Edit1Exit(Sender: TObject);
  private
{ Private declarations }
  public
  ResultList1:TStrings;
  end;

var
  Form1: TForm1;

procedure SearchByPyIndexStr(PYIndexStr :string);

implementation

{$R *.DFM}
function GetPyIndexChar(Hzchar:string):String;
begin
   case (Word(hzchar[1]) shl 8 + Word(hzchar[2])) of
   $B0A1..$B0C4 : Result :='A';
   $B0C5..$B2C0 : Result :='B';
   $B2C1..$B4ED : Result :='C';
   $B4EE..$B6E9 : Result :='D';
   $B6EA..$B7A1 : Result :='E';
   $B7A2..$B8C0 : Result :='F';
   $B8C1..$B9FD : Result :='G';
   $B9FE..$BBF6 : Result :='H';
   $BBF7..$BFA5 : Result :='J';
   $BFA6..$C0AB : Result :='K';
   $C0AC..$C2E7 : Result :='L';
   $C2E8..$C4C2 : Result :='M';
   $C4C3..$C5B5 : Result :='N';
   $C5B6..$C5BD : Result :='O';
   $C5BE..$C6D9 : Result :='P';
   $C6DA..$C8BA : Result :='Q';
   $C8BB..$C8F5 : Result :='R';
   $C8F6..$CBF9 : Result :='S';
   $CBFA..$CDD9 : Result :='T';
   $CDDA..$CEF3 : Result :='W';
   $CEF4..$D1B8 : Result :='X';
   $D1B9..$D4D0 : Result :='Y';
   $D4D1..$D7F9 : Result :='Z';
   else
   Result := char(0);
   end;
end;

procedure SearchByPyIndexStr(PYIndexStr :string);
label NotFound;
var
   I, J :Integer;
   Hzchar :String;
begin
   For I:=0 to Form1.ListBox1.Items.Count-1 do
   begin
   For J:=1 to Length(PYIndexStr) do
   begin
   Hzchar :=Form1.ListBox1.Items[I][2*J-1]+Form1.ListBox1.Items[I][2*J];
   if (PYIndexStr[J] <>'?') and (UpperCase(PYIndexStr[J])<>GetPyIndexChar(Hzchar)) then
   goto NotFound;
   end;
   Form1.ResultList1.Add(Form1.ListBox1.Items[I]);
   NotFound:
   end;
end;

procedure TForm1.Edit1Change(Sender: TObject);
begin
  if Edit1.Text<>'' then
  begin
ListBox2.Items.Clear;
Form1.ResultList1.Clear;
SearchByPyIndexStr(edit1.text);
ListBox2.Items.AddStrings(ResultList1);
  end;
end;

procedure TForm1.FormShow(Sender: TObject);
begin
  ResultList1:=TStringList.Create;
end;

procedure TForm1.FormDestroy(Sender: TObject);
begin
  ResultList1.Free;
end;

procedure TForm1.Edit1Enter(Sender: TObject);
begin
  Edit1.Text:='';
end;

procedure TForm1.Edit1Exit(Sender: TObject);
begin
  Edit1.Text:='请输入声母';
end;

end.