unit t_ch_rate;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls, BusinessSkinForm, bsSkinCtrls, DB;

type
  Tfrm_ch_rate = class(TForm)
    Edit1: TEdit;
    Label1: TLabel;
    Label2: TLabel;
    Label3: TLabel;
    Label4: TLabel;
    Label5: TLabel;
    Edit2: TEdit;
    Label6: TLabel;
    bsSkinButton10: TbsSkinButton;
    bsSkinButton5: TbsSkinButton;
    bsBusinessSkinForm1: TbsBusinessSkinForm;
    Label7: TLabel;
    Label8: TLabel;
    DataSource1: TDataSource;
    procedure bsSkinButton5Click(Sender: TObject);
    procedure FormShow(Sender: TObject);
    procedure Edit1Change(Sender: TObject);
    procedure Edit2Change(Sender: TObject);
    procedure bsSkinButton10Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
    stltype:string;
  end;

var
  frm_ch_rate: Tfrm_ch_rate;

implementation

uses u_data_share, my_sys_function;

{$R *.dfm}

procedure Tfrm_ch_rate.bsSkinButton5Click(Sender: TObject);
begin
  close;
end;

procedure Tfrm_ch_rate.FormShow(Sender: TObject);
var aRate:real;
begin
   aRate:=GetUsdExrate_Invoice(FormatDateTime('YYYY-MM-DD',Date));


  if (stltype='1') or (stltype='7') then
  begin
    if aRate>0 then
    begin
      frm_data_share.t_code_currency.requery;
      if Label1.Caption='RMB' then
      begin
        if frm_data_share.t_code_currency.Locate('币别',Label3.Caption,[]) then
        begin
          Edit2.Text:=FloatToStr(aRate);
          Edit1.Text:=floattostr(s_w(8,(1/aRate)));
        end;
      end
      else if Label3.Caption='RMB' then
      begin
        if frm_data_share.t_code_currency.Locate('币别',Label1.Caption,[]) then
        begin
          Edit1.Text:=FloatToStr(aRate);
          Edit2.Text:=floattostr(s_w(8,(1/aRate)));
        end;
      end;
    end
    else
    begin
      frm_data_share.t_code_currency.requery;
      if Label1.Caption='RMB' then
      begin
        if frm_data_share.t_code_currency.Locate('币别',Label3.Caption,[]) then
        begin
          Edit2.Text:=frm_data_share.t_code_currency.fieldbyname('汇率').asstring;
          Edit1.Text:=floattostr(s_w(8,(1/frm_data_share.t_code_currency.fieldbyname('汇率').asfloat)));
        end;
      end
      else if Label3.Caption='RMB' then
      begin
        if frm_data_share.t_code_currency.Locate('币别',Label1.Caption,[]) then
        begin
          Edit1.Text:=frm_data_share.t_code_currency.fieldbyname('汇率').asstring;
          Edit2.Text:=floattostr(s_w(8,(1/frm_data_share.t_code_currency.fieldbyname('汇率').asfloat)));
        end;
      end;
    end; 
  end
  else
  begin
    frm_data_share.t_code_currency.requery;
    if Label1.Caption='RMB' then
    begin
      if frm_data_share.t_code_currency.Locate('币别',Label3.Caption,[]) then
      begin
        Edit2.Text:=frm_data_share.t_code_currency.fieldbyname('汇率').asstring;
        Edit1.Text:=floattostr(s_w(8,(1/frm_data_share.t_code_currency.fieldbyname('汇率').asfloat)));
      end;
    end
    else if Label3.Caption='RMB' then
    begin
      if frm_data_share.t_code_currency.Locate('币别',Label1.Caption,[]) then
      begin
        Edit1.Text:=frm_data_share.t_code_currency.fieldbyname('汇率').asstring;
        Edit2.Text:=floattostr(s_w(8,(1/frm_data_share.t_code_currency.fieldbyname('汇率').asfloat)));
      end;
    end;
  end;  
end;

procedure Tfrm_ch_rate.Edit1Change(Sender: TObject);
begin
  if bsSkinButton10.Focused then
    exit;
  if Edit1.Focused then
  if trim(Edit1.text)='' then
  begin
    edit2.text:='';
  end
  else
  begin
    try
      strtofloat(trim(Edit1.text));
    except
      showmessage('输入汇率错误，请正确输入！');
      exit;
    end;
    if strtofloat(trim(Edit1.text))=0 then
    begin
      edit2.text:='0';
    end
    else
    begin
      edit2.text:=floattostr(s_w(8,1/strtofloat(trim(Edit1.text))));
    end;
  end;
end;

procedure Tfrm_ch_rate.Edit2Change(Sender: TObject);
begin
  if bsSkinButton10.Focused then
    exit;
  if Edit2.Focused then
  if trim(Edit2.text)='' then
  begin
    edit1.text:='';
  end
  else
  begin
    try
      strtofloat(trim(Edit2.text));
    except
      showmessage('输入汇率错误，请正确输入！');
      exit;
    end;
    if strtofloat(trim(Edit2.text))=0 then
    begin
      edit1.text:='0';
    end
    else
    begin
      edit1.text:=floattostr(s_w(8,1/strtofloat(trim(Edit2.text))));
    end;
  end;
end;

procedure Tfrm_ch_rate.bsSkinButton10Click(Sender: TObject);
begin
  try
    strtofloat(trim(Edit1.text));
  except
    showmessage('输入汇率错误，请正确输入！');
    exit;
  end;
  DataSource1.DataSet.insert;
  DataSource1.DataSet['currency']:=Label1.Caption;
  DataSource1.DataSet['rate']:=strtofloat(trim(Edit1.text));
  DataSource1.DataSet.post;
  close;
end;

end.