unit tpTrialPegInputFrm;

interface

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

type
  TTrialPegInputForm = class(TForm)
    lblHint: TLabel;
    lePeg: TLabeledEdit;
    btnOk: TButton;
    btnCancel: TButton;
    procedure btnOkClick(Sender: TObject);
  private
    function GetPeg: string;
  public
    property Peg: string read GetPeg;
  end;

function InputTrialPeg(var APeg: string): Boolean;

implementation

uses
  UtilMethods, mPegFilter;

function InputTrialPeg(var APeg: string): Boolean;
var
  vInputForm: TTrialPegInputForm;
begin
  vInputForm := TTrialPegInputForm.Create(nil);
  try
    Result := vInputForm.ShowModal = mrOk;
    if Result then
      APeg := vInputForm.Peg;
  finally
    vInputForm.Free;
  end;
end;

{$R *.dfm}

procedure TTrialPegInputForm.btnOkClick(Sender: TObject);
begin
  if (lePeg.Text = '') then
    TipMessage('请输入起点桩号。')
  else if PegFilter.Filter(lePeg.Text) then
    ModalResult := mrOk
  else
    TipMessage('请按格式“K###+###~K###+###”输入桩号');
end;

function TTrialPegInputForm.GetPeg: string;
begin
  Result := lePeg.Text;
end;

end.