Looking at the Details for an Invoicing Application in Delphi

The remaining part of the application deals mostly with managing invoice and client information. Check below for a listing of the code for the two units.

unit viewchange;

interface

uses

  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,

  Dialogs, StdCtrls, DBCtrls, ExtCtrls, Mask, Buttons,math, RpRave,

  RpDefine, RpCon, RpConDS, DB, ADODB, RpRenderCanvas, RpRenderPreview,

  RpRender, RpRenderPDF, RpBase, RpSystem;

type

  TForm5 = class(TForm)

    GroupBox1: TGroupBox;

    StaticText7: TStaticText;

    StaticText3: TStaticText;

    dbm: TDBMemo;

    StaticText6: TStaticText;

    StaticText4: TStaticText;

    dbnav: TDBNavigator;

    edinvname: TDBText;

    StaticText1: TStaticText;

    SpeedButton1: TSpeedButton;

    StaticText2: TStaticText;

    DBText4: TDBText;

    edAmount: TDBEdit;

    edTotal: TDBEdit;

    SpeedButton2: TSpeedButton;

    rds: TRvDataSetConnection;

    rvp: TRvProject;

    cd: TDataSource;

    cado: TADOTable;

    DBMemo1: TDBMemo;

    rds2: TRvDataSetConnection;

    edstatus: TDBEdit;

    StaticText5: TStaticText;

    pdf1: TRvRenderPDF;

    RvRenderPreview1: TRvRenderPreview;

    rvs: TRvSystem;

    SpeedButton3: TSpeedButton;

    procedure SpeedButton1Click(Sender: TObject);

    procedure edTotalClick(Sender: TObject);

    procedure edAmountChange(Sender: TObject);

    procedure SpeedButton2Click(Sender: TObject);

    procedure SpeedButton3Click(Sender: TObject);

    procedure FormShow(Sender: TObject);

  private

    { Private declarations }

  public

    { Public declarations }

  end;

var

  Form5: TForm5;

  tots:real;

  dt:tdatetime;

implementation

{$R *.dfm}

uses invmain;

procedure TForm5.SpeedButton1Click(Sender: TObject);

begin

close;

end;

procedure TForm5.edTotalClick(Sender: TObject);

var

am:real;

begin

edtotal.Clear;

if tots > 0 then

begin

am:= (form1.vat / 100) * tots;

tots:=tots + am;

tots:=RoundTo(tots,-2);

edTotal.Text:=floattostr(tots);

end;

end;

procedure TForm5.edAmountChange(Sender: TObject);

begin

tots:= strtofloat(edAmount.Text);

end;

procedure TForm5.SpeedButton2Click(Sender: TObject);

begin

rvp.Execute;

end;

procedure TForm5.SpeedButton3Click(Sender: TObject);

begin

dt:=now;

ShortDateFormat := 'dmyyyy';

rvs.DefaultDest:=rdFile;

rvs.DoNativeOutput:=false;

rvs.RenderObject:= pdf1;

rvs.OutputFileName:='d:'+edinvname.Caption +''+DateToStr(Date)+'.pdf';

rvs.SystemSetups:=rvs.SystemSetups-[ssAllowsetup];

rvp.Engine:=rvs;

rvp.Execute;

end;

procedure TForm5.FormShow(Sender: TObject);

begin

cado.ConnectionString:=form1.con;

form1.ado1.ConnectionString:=form1.con;

form1.ado1.Active:=true;

form1.ado1.recno:=form1.num;

cado.active:=true;

{cd.DataSet:='cado';

cado.tablename:='clients';

cado.masterfield:='invname';

edamount.datasource:='Form1.d1';

edamount.datafield:='amount';

edtotal.datasource:='Form1.d1';

edtotal.datafield:='total';

edstatus.datasource:='Form1.d1';

edstatus.datafield:='status';

dbtext4.datasource:='Form1.d1';

dbnav.datasource:='Form1.d1';

dbm.datasource:='Form1.d1';

dbm.datafield:='notes';

}

//client properties

{cd.DataSet:=cado;

cado.tablename:='clients';

cado.MasterFields:='invname';

edinvname.datasource:=cd;

dbmemo1.datasource:=cd;

dbmemo1.DataField:='address';

edinvname.DataField:='invname'; }

//cado.Active:=true;

rvp.ProjectFile:=form1.rav;

end;

end.

Output produced by this code: