waveform.pas

usb4711A数据采集卡的DA转换通道程序

unit Waveform;

interface

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

type
  TfrmWaveSelect = class(TForm)
    cmbWave: TComboBox;
    labWaveform: TLabel;
    butOk: TButton;
    Button1: TButton;
    Label1: TLabel;
    Label2: TLabel;
    Label3: TLabel;
    editVoltMagnitude: TEdit;
    Label4: TLabel;
    editVoltOffset: TEdit;
    Label5: TLabel;
    editAccuracy: TMaskEdit;
    Label6: TLabel;
    procedure FormCreate(Sender: TObject);
    procedure Button1Click(Sender: TObject);
    procedure butOkClick(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  frmWaveSelect: TfrmWaveSelect;

implementation

uses init;

{$R *.DFM}

procedure TfrmWaveSelect.FormCreate(Sender: TObject);
begin
    cmbWave.ItemIndex := 0;
end;

procedure TfrmWaveSelect.Button1Click(Sender: TObject);
begin
    close;
end;

procedure TfrmWaveSelect.butOkClick(Sender: TObject);
begin
    frmInit.labWaveform.Caption := cmbWave.Text + ', ' + editAccuracy.Text + 'pt';

    {record the waveform information}
    with frmInit.gwavOut Do
    begin
        iType      := cmbWave.ItemIndex;     {0: Sine, 1: Triangle, 2: Square}
        fMagnitude := StrToFloat(editVoltMagnitude.text);
        fOffset    := StrToFloat(editVoltOffset.text);
        wPeriod    := StrToInt(editAccuracy.text);
    end;

    close;
end;

end.