salededuct.pas

主要是介绍DELPHI三层应用以及分布式数据库的应用

unit salededuct;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, DBTables, DB, Grids, DBGrids, StdCtrls, DBCtrls, Mask, ExtCtrls,
  ComCtrls;

type
  Tfrm_salededuct = class(TForm)
    PageControl1: TPageControl;
    TabSheet1: TTabSheet;
    Panel3: TPanel;
    Label11: TLabel;
    Label12: TLabel;
    DBComboBox2: TDBComboBox;
    DBComboBox3: TDBComboBox;
    Panel1: TPanel;
    btn_first: TButton;
    btn_prev: TButton;
    btn_next: TButton;
    btn_last: TButton;
    btn_addnew: TButton;
    btn_edit: TButton;
    btn_save: TButton;
    btn_cancel: TButton;
    btn_delete: TButton;
    TabSheet2: TTabSheet;
    GroupBox3: TGroupBox;
    cbbsc: TComboBox;
    Panel2: TPanel;
    btn_brs: TButton;
    btn_qry: TButton;
    btn_clr: TButton;
    btn_prt: TButton;
    GroupBox2: TGroupBox;
    DBGrid1: TDBGrid;
    qsalededuct: TQuery;
    dssalededuct: TDataSource;
    Quse: TQuery;
    Label1: TLabel;
    EditDBEdit1: TDBEdit;
    EditDBEdit6: TDBEdit;
    Label2: TLabel;
    Label7: TLabel;
    EditDBEdit7: TDBEdit;
    EditDBEdit2: TDBEdit;
    Label3: TLabel;
    Label8: TLabel;
    EditDBEdit3: TDBEdit;
    Label9: TLabel;
    EditDBEdit4: TDBEdit;
    Label10: TLabel;
    EditDBEdit5: TDBEdit;
    GroupBox4: TGroupBox;
    Label13: TLabel;
    Label14: TLabel;
    cbyear: TComboBox;
    cbmonth: TComboBox;
    qsaledeductBDEDesigner: TAutoIncField;
    qsaledeductBDEDesigner2: TStringField;
    qsaledeductBDEDesigner3: TCurrencyField;
    qsaledeductBDEDesigner4: TCurrencyField;
    qsaledeductBDEDesigner5: TCurrencyField;
    qsaledeductBDEDesigner6: TCurrencyField;
    qsaledeductBDEDesigner7: TCurrencyField;
    qsaledeductBDEDesigner8: TCurrencyField;
    qsaledeductBDEDesigner9: TStringField;
    qsaledeductBDEDesigner10: TStringField;
    qsaledeductBDEDesigner11: TStringField;
    qsaledeductBDEDesigner12: TStringField;
    qsaledeductBDEDesigner13: TStringField;
    qsaledeductBDEDesigner14: TDateTimeField;
    upsalededuct: TUpdateSQL;
    GroupBox1: TGroupBox;
    Label4: TLabel;
    Label5: TLabel;
    Label6: TLabel;
    Label15: TLabel;
    DBEdit3: TDBEdit;
    DBEdit4: TDBEdit;
    DBEdit5: TDBEdit;
    DBEdit1: TDBEdit;
    procedure getdeduct;
    procedure qsaledeductCalcFields(DataSet: TDataSet);
    procedure FormClose(Sender: TObject; var Action: TCloseAction);
    procedure btn_firstClick(Sender: TObject);
    procedure btn_lastClick(Sender: TObject);
    procedure btn_addnewClick(Sender: TObject);
    procedure btn_saveClick(Sender: TObject);
    procedure btn_prevClick(Sender: TObject);
    procedure btn_nextClick(Sender: TObject);
    procedure btn_editClick(Sender: TObject);
    procedure btn_cancelClick(Sender: TObject);
    procedure btn_deleteClick(Sender: TObject);
    procedure FormCreate(Sender: TObject);
    procedure btn_brsClick(Sender: TObject);
    procedure btn_qryClick(Sender: TObject);
    procedure btn_clrClick(Sender: TObject);
    procedure TabSheet2Enter(Sender: TObject);
    procedure btn_prtClick(Sender: TObject);
    procedure FormDestroy(Sender: TObject);

  private
    { Private declarations }
      procedure LockEdit;
    //定义函数，来改变各个输入框是否可以编辑，当用户再增加新记录
    //或者编辑记录以前，不可以修改
    procedure UnlockEdit;
    //定义函数，用来让输入文本框可以编辑
    procedure DisableBtn;
    //定义过程，用来使某些按钮失效
    procedure EnableBtn;
    //定义过程，用来使某些按钮有效
  public

  deduct:real;

    { Public declarations }
  end;

var
  frm_salededuct: Tfrm_salededuct;

implementation

uses data, rp_salededuct;

{$R *.dfm}

//***************释放空间********************
procedure Tfrm_salededuct.FormClose(Sender: TObject;
  var Action: TCloseAction);
begin
        Action:=cafree;
end;

//***************以下是自定义的按纽和编辑的可否应用部分*********************
//自定义过程，用来确定每个Edit空间是否可以编辑
procedure Tfrm_salededuct.LockEdit;
begin
 {      EditDBEdit1.ReadOnly :=false;
       EditDBEdit2.ReadOnly :=false;
       EditDBEdit3.ReadOnly :=true;
       EditDBEdit4.ReadOnly :=true;
       EditDBEdit5.ReadOnly :=true;
       EditDBEdit6.ReadOnly :=true;
EditDBEdit7.ReadOnly :=true;
       EditDBEdit1.ReadOnly :=true;
       DBEdit3.ReadOnly :=true;
       DBEdit4.ReadOnly :=true;
       DBEdit5.ReadOnly :=true;
       DBComboBox2.ReadOnly :=true;
       DBComboBox3.ReadOnly :=true;}
       panel3.Enabled :=false;

end;

procedure Tfrm_salededuct.UnlockEdit ;
begin
{       EditDBEdit1.ReadOnly :=false;
       EditDBEdit2.ReadOnly :=false;
       EditDBEdit3.ReadOnly :=false;
       EditDBEdit4.ReadOnly :=false;
       EditDBEdit5.ReadOnly :=false;
       EditDBEdit6.ReadOnly :=false;
       EditDBEdit7.ReadOnly :=false;
       EditDBEdit1.ReadOnly :=true;
       DBEdit3.ReadOnly :=false;
       DBEdit4.ReadOnly :=false;
       DBEdit5.ReadOnly :=false;
       DBComboBox2.ReadOnly :=false;
       DBComboBox3.ReadOnly :=false;
                              }
     panel3.Enabled :=true;
end;


procedure Tfrm_salededuct.DisableBtn ;
begin
    btn_first.Enabled :=false;
    btn_prev.Enabled :=false;
    btn_next.Enabled :=false;
    btn_last.Enabled :=false;

    btn_addnew.Enabled :=false;
    btn_edit.Enabled :=false;
end;

procedure Tfrm_salededuct.EnableBtn ;
begin
    btn_first.Enabled :=true;
    btn_prev.Enabled :=true;
    btn_next.Enabled :=true;
    btn_last.Enabled :=true;

    btn_addnew.Enabled :=true;
    btn_edit.Enabled :=true;
end;

//***************以上是自定义的按纽和编辑的可否应用部分*********************

//***************以下是按纽操作。*********************

procedure Tfrm_salededuct.btn_firstClick(Sender: TObject);
begin
        if not qsalededuct.Bof then qsalededuct.First ;


end;

procedure Tfrm_salededuct.btn_lastClick(Sender: TObject);
begin
        if not qsalededuct.eof then qsalededuct.Last;


end;
 procedure Tfrm_salededuct.btn_prevClick(Sender: TObject);
begin
        if not qsalededuct.Bof then   qsalededuct.Prior ;


end;

procedure Tfrm_salededuct.btn_nextClick(Sender: TObject);
begin
        if not qsalededuct.Eof then   qsalededuct.Next ;
end;
procedure Tfrm_salededuct.btn_addnewClick(Sender: TObject);
var
  Present: TDateTime;
begin
        UnlockEdit;
        qsalededuct.append;

        DisableBtn;
        btn_save.Enabled :=true;
        btn_cancel.Enabled :=true;
//给下面审核栏默认值：
//日期：
    Present:= Now;
    DBEdit1.Text :=datetimetostr(present);
//人名：
  with quse do begin
    if active then close;
    unprepare;
    sql.Clear;
    sql.Add('select 主管,审核,录入 from pub_z_salededuct');
    prepare;
    open;
    last;
    qsalededuct.fieldbyname('主管').AsString:=fieldbyname('主管').AsString;
    qsalededuct.fieldbyname('审核').AsString:=fieldbyname('审核').AsString;
    qsalededuct.fieldbyname('录入').AsString:=fieldbyname('录入').AsString;
  end;

end;

procedure Tfrm_salededuct.btn_saveClick(Sender: TObject);
begin
      with data.zxjxdata do begin
      if not DatabaseJxw.intransaction then DatabaseJxw.starttransaction;
      try
      qsalededuct.ApplyUpdates;
      DatabaseJxw.commit;
      qsalededuct.CommitUpdates ;
        //使编辑框和按钮有反应：
        LockEdit;
        EnableBtn ;
        btn_save.Enabled :=false;
        btn_cancel.Enabled :=false;
      except
        DatabaseJxw.Rollback;
        raise;
      end;

    end;
{    qsalededuct.Close ;
    qsalededuct.Open ;
 }
end;



procedure Tfrm_salededuct.btn_editClick(Sender: TObject);
begin
        //if qsalededuct.Eof then qsalededuct.Last;
        qsalededuct.Edit ;
        //让文本框可以编辑
        UnlockEdit;
        //使一些按钮失效
        DisableBtn;
        btn_save.Enabled :=true;
        btn_cancel.Enabled :=true;

end;


procedure Tfrm_salededuct.btn_cancelClick(Sender: TObject);
begin
        qsalededuct.Cancel ;

        lockedit;

        enablebtn;
        btn_cancel.Enabled :=false;
        btn_save.Enabled :=false;

end;


procedure Tfrm_salededuct.btn_deleteClick(Sender: TObject);
begin
     qsalededuct.Delete ;
      qsalededuct.ApplyUpdates ;
     lockedit;

     enablebtn;
     btn_delete.Enabled :=false;
     btn_save.Enabled :=false;

end;
//***************以上是按纽操作。*********************


procedure Tfrm_salededuct.getdeduct;
begin     //计算deduct
      with quse do begin
      if active then close;
      unprepare;
      sql.Clear;
      sql.Add('select * from  std_pay_deduct');
      prepare;
      open;
         last;
         while not bof do begin
            if  qsalededuct.FieldByName('零配件回款率').AsFloat>= fieldbyname('回款率').Asfloat  then
            deduct:= fieldbyname('零配件计提率').Asfloat;
            Prior;
         end;
      end;
end;

procedure Tfrm_salededuct.qsaledeductCalcFields(DataSet: TDataSet);
begin
     with qsalededuct do begin
       FieldByName('零配件回款率').AsFloat:=FieldByName('回笼货款').AsFloat/FieldByName('已销货款').AsFloat;
       getdeduct;
       FieldByName('零配件计提').AsFloat:=deduct*FieldByName('回笼货款').AsFloat;
    end;
end;

procedure Tfrm_salededuct.FormCreate(Sender: TObject);
begin
    lockedit;
    enablebtn;
  //通过quse读出办事处列表
  with quse do begin
    if active then close;
    unprepare;
    sql.Clear;
    sql.Add('select 办事处名称 from pub_z_office');
    prepare;
    open;
    while not eof do begin
      DBComboBox2.Items.Add(fieldbyname('办事处名称').AsString);
      next;
    end;
  end;

    with qsalededuct do begin
    open;
    first;
    end;

end;

procedure Tfrm_salededuct.btn_brsClick(Sender: TObject);
begin
    DBGrid1.DataSource :=dssalededuct;
       qsalededuct.filtered:=false;
end;

procedure Tfrm_salededuct.btn_qryClick(Sender: TObject);
var
  qitem,q1,q2,q3:string;
begin
     q1 :=cbbsc.Text;
     q2 :=cbyear.Text;
     q3 :=cbmonth.Text;
   //如果没有设置条件，给出提示：
  if (q1='') and (q2='') and (q3='')
  then  application.MessageBox('您还没有设置查询条件呢！','提示',MB_OK)
  else  begin //将输入加工成条件段

    if not(cbbsc.Text='') then
      begin
      q1:=cbbsc.Text;
      q1:=' 办事处名称='''+q1+''' ';
      end
    else
      q1:='';
    if not(cbyear.Text='') then
      begin
      q2:=cbyear.Text;
      q2:=' 年='''+q2+''' ';
      end
    else
      q2:='';
    if not(cbmonth.Text='') then
      begin
      q3:=cbmonth.Text;
      q3:=' 月='''+q3+''' ';
      end
    else
      q3:='';

     //将条件累加成where 子句
     qitem:=q1;
     if qitem='' then
         if q2<>'' then qitem:=q2 else qitem:=''
     else
         if q2<>'' then qitem:=qitem+' and '+q2 ;

     if qitem='' then
         if q3<>'' then qitem:=q3 else qitem:=''
     else
         if q3<>'' then qitem:=qitem+' and '+q3;

   //根据条件过滤
    with qsalededuct do begin

      filter:=qitem;
      filtered:=true;

      if not findfirst then  begin
        application.MessageBox('没有您要的信息！','提示',MB_OK);
        btn_clrClick(btn_clr);
        end ;
    end;

end;

end;
procedure Tfrm_salededuct.btn_clrClick(Sender: TObject);
begin
      cbbsc.Text :='';
      cbyear.Text :='';
      cbmonth.Text :='';

end;

procedure Tfrm_salededuct.TabSheet2Enter(Sender: TObject);
begin
   //给出查询页的下拉列表。
  with quse do begin
    if active then close;
    unprepare;
    sql.Clear;
    sql.Add('select 办事处名称 from pub_z_office');
    prepare;
    open;
    while not eof do begin
      cbbsc.Items.Add(fieldbyname('办事处名称').AsString);
      next;
    end;
  end;

end;

procedure Tfrm_salededuct.btn_prtClick(Sender: TObject);
begin
     frp_salededuct:=Tfrp_salededuct.Create(application);
     frp_salededuct.QuickRep1.Preview;
     frp_salededuct.free;

end;

procedure Tfrm_salededuct.FormDestroy(Sender: TObject);
begin
     frm_salededuct:=nil;
end;

end.