stuff.pas

主要是介绍DELPHI三层应用以及分布式数据库的应用

unit stuff;

interface

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

type
  Tfrm_stuff = class(TForm)
    PageControl1: TPageControl;
    TabSheet1: TTabSheet;
    TabSheet2: TTabSheet;
    Panel1: TPanel;
    Panel2: 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;
    GroupBox2: TGroupBox;
    GroupBox3: TGroupBox;
    GroupBox4: TGroupBox;
    Panel3: TPanel;
    btn_brs: TButton;
    btn_qry: TButton;
    btn_clr: TButton;
    btn_prt: TButton;
    GroupBox6: TGroupBox;
    DBGrid1: TDBGrid;
    Label2: TLabel;
    Label3: TLabel;
    Label4: TLabel;
    Label5: TLabel;
    Label7: TLabel;
    Label8: TLabel;
    Label14: TLabel;
    Label15: TLabel;
    Label16: TLabel;
    Label17: TLabel;
    Label18: TLabel;
    Label19: TLabel;
    Label20: TLabel;
    EditDBEdit2: TDBEdit;
    EditDBEdit3: TDBEdit;
    EditDBEdit8: TDBEdit;
    EditDBEdit11: TDBEdit;
    EditDBEdit12: TDBEdit;
    EditDBEdit13: TDBEdit;
    EditEMAIL: TDBEdit;
    DBMemo1: TDBMemo;
    DBMemo2: TDBMemo;
    qstuff: TQuery;
    dsstuff: TDataSource;
    quse: TQuery;
    DBComboBox1: TDBComboBox;
    DBComboBox2: TDBComboBox;
    cbgw: TComboBox;
    cbxm: TComboBox;
    cbbsc: TComboBox;
    Label1: TLabel;
    EditDBEdit: TDBEdit;
    Label12: TLabel;
    DBEdit1: TDBEdit;
    Label13: TLabel;
    DBEdit2: TDBEdit;
    DBEdit3: TDBEdit;
    Label21: TLabel;
    Label22: TLabel;
    EditDBEdit5: TDBEdit;
    Label23: TLabel;
    DBCheckBox1: TDBCheckBox;
    DBComboBox3: TDBComboBox;
    DBComboBox4: TDBComboBox;
    qstuffBDEDesigner2: TStringField;
    qstuffBDEDesigner3: TStringField;
    qstuffBDEDesigner4: TStringField;
    qstuffBDEDesigner5: TStringField;
    qstuffBDEDesigner6: TDateTimeField;
    qstuffBDEDesigner7: TDateTimeField;
    qstuffBDEDesigner8: TDateTimeField;
    qstuffBDEDesigner9: TStringField;
    qstuffBDEDesigner10: TStringField;
    qstuffBDEDesigner11: TStringField;
    qstuffBDEDesigner12: TStringField;
    qstuffBDEDesigner13: TStringField;
    qstuffBDEDesigner14: TStringField;
    qstuffBDEDesigner15: TMemoField;
    qstuffBDEDesigner16: TStringField;
    qstuffBDEDesigner17: TStringField;
    qstuffBDEDesigner18: TStringField;
    qstuffEMAIL: TStringField;
    qstuffBDEDesigner19: TMemoField;
    qstuffBDEDesigner20: TStringField;
    qstuffBDEDesigner21: TStringField;
    qstuffBDEDesigner22: TStringField;
    qstuffBDEDesigner23: TDateTimeField;
    qforuse: TQuery;
    upstuff: TUpdateSQL;
    GroupBox1: TGroupBox;
    Label10: TLabel;
    Label11: TLabel;
    Label6: TLabel;
    Label9: TLabel;
    DBEdit7: TDBEdit;
    DBEdit8: TDBEdit;
    DBEdit9: TDBEdit;
    DBEdit10: TDBEdit;
    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_clrClick(Sender: TObject);
    procedure btn_qryClick(Sender: TObject);
    procedure TabSheet2Enter(Sender: TObject);
    procedure btn_prtClick(Sender: TObject);
    procedure FormKeyPress(Sender: TObject; var Key: Char);
    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
    { Public declarations }
 
  end;

var
  Frm_stuff: TFrm_stuff;

implementation

uses  data, rp_stuff, Unit_wxp;



{$R *.dfm}
//***************释放空间********************
procedure TFrm_stuff.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_stuff.LockEdit;
begin
panel1.Enabled :=false;

end;

procedure TFrm_stuff.UnlockEdit ;
begin
panel1.Enabled :=true;


end;


procedure TFrm_stuff.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_stuff.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_stuff.btn_firstClick(Sender: TObject);
begin
        if not qstuff.Bof then qstuff.First;

end;

procedure TFrm_stuff.btn_lastClick(Sender: TObject);
begin
        if not qstuff.eof then qstuff.Last;

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

end;

procedure TFrm_stuff.btn_nextClick(Sender: TObject);
begin
        if not qstuff.Eof then qstuff.Next;
end;
procedure TFrm_stuff.btn_addnewClick(Sender: TObject);
var
  Present: TDateTime;
begin
        UnlockEdit;
        qstuff.append;
        editdbedit3.SetFocus ;

        DisableBtn;
        btn_save.Enabled :=true;
        btn_cancel.Enabled :=true;
//给下面审核栏默认值：
    qstuff.fieldbyname('办事处名称').AsString :=myoffice;
//日期：
    Present:= Now;
    qstuff.fieldbyname('录入日期').AsString :=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_stuff');
    prepare;
    open;
    last;
    qstuff.fieldbyname('主管').AsString:=fieldbyname('主管').AsString;
    qstuff.fieldbyname('审核').AsString:=fieldbyname('审核').AsString;
    qstuff.fieldbyname('录入').AsString:=fieldbyname('录入').AsString;
  end;

 
end;

procedure TFrm_stuff.btn_saveClick(Sender: TObject);
begin
//判断是否存在该工号，有则给出出错信息，没有则保存。
{  with quse do begin
    if active then close;
    unprepare;
    sql.Clear;
    sql.Add('select 工号 from pub_z_stuff where 工号=:gh');
    parambyname('gh').AsString:=qstuff.fieldbyname('工号').asstring;
    open;
    //有，给出信息：
    if findfirst then begin
      application.MessageBox('已存在该工号，请重新输入！','提示',MB_OK);
      EditDBEdit3.Clear;
      EditDBEdit3.SetFocus;
    end;
end; }

      with data.zxjxdata do begin
      if not DatabaseJxw.intransaction then DatabaseJxw.starttransaction;
      try
      qstuff.ApplyUpdates;
      qstuff.CommitUpdates ;
      DatabaseJxw.commit;
        //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;
    
{    qstuff.Close ;
    qstuff.Open ;
 }
end;



procedure TFrm_stuff.btn_editClick(Sender: TObject);
begin

        qstuff.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_stuff.btn_cancelClick(Sender: TObject);
begin
        qstuff.Cancel ;

        lockedit;

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

end;


procedure TFrm_stuff.btn_deleteClick(Sender: TObject);
begin
     qstuff.Delete;
     qstuff.ApplyUpdates ;
     lockedit;

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

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


procedure Tfrm_stuff.FormCreate(Sender: TObject);
begin
    lockedit;
    enablebtn;

  //通过quse读出岗位和办事处列表
  with qforuse 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 qforuse do begin
    if active then close;
    unprepare;
    sql.Clear;
    sql.Add('select 职位 from std_office_station');
    prepare;
    open;
    while not eof do begin
      DBComboBox1.Items.Add(fieldbyname('职位').AsString);
      next;
    end;
  end;

  if qstuff.Active=false then qstuff.Open;
end;

procedure Tfrm_stuff.btn_brsClick(Sender: TObject);
begin
    qstuff.Filtered :=false;
    DBGrid1.DataSource :=dsstuff;
end;

procedure Tfrm_stuff.btn_clrClick(Sender: TObject);
begin
      cbxm.Text :='';
      cbbsc.Text :='';
      cbgw.Text :='';

end;

procedure Tfrm_stuff.btn_qryClick(Sender: TObject);
var
  qitem,q1,q2,q3:string;
begin

  q1 :=cbgw.Text;
  q2 :=cbxm.Text;
  q3 :=cbbsc.Text;

  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

    if not(cbxm.Text='') then
      begin
      q2:=cbxm.Text;
      q2:=' 姓名='''+q2+''' ';
      end
    else
      q2:='';
    if not(cbgw.Text='') then
      begin
      q1:=cbgw.Text;
      q1:=' 岗位='''+q1+''' ';
      end
    else
      q1:='';
    if not(cbbsc.Text='') then
      begin
      q3:=cbbsc.Text;
      q3:=' 办事处名称='''+q3+''' ';
      end
    else
      q3:='';

     //将条件累加成子句
     if q1<>'' then qitem:=q1 else qitem:='';

     if qitem='' then
         if q2<>'' then qitem:=q2;
     if qitem<>'' then
         if q2<>'' then qitem:=qitem+' and '+q2 ;

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

   //根据条件过滤
    with qstuff 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_stuff.TabSheet2Enter(Sender: TObject);
begin
   with quse do begin
    if active then close;
    unprepare;
    sql.Clear;
    sql.Add('select 职位 from std_office_station');
    prepare;
    open;
      cbgw.Items.Clear ;
      while not Eof do begin
      cbgw.Items.Add(FieldByName('职位').AsString);
      Next;
      end;
    end;

   with quse do begin
    if active then close;
    unprepare;
    sql.Clear;
    sql.Add('select 姓名 from pub_z_stuff');
    prepare;
    open;
      cbxm.Items.Clear ;
      while not Eof do begin
      cbxm.Items.Add(FieldByName('姓名').AsString);
      Next;
      end;
    end;
  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;
      cbbsc.Items.Clear ;
      while not Eof do begin
      cbbsc.Items.Add(FieldByName('办事处名称').AsString);
      Next;
      end;
    end;

end;

procedure Tfrm_stuff.btn_prtClick(Sender: TObject);
begin
     frp_stuff:=Tfrp_stuff.Create(application);
     frp_stuff.QuickRep1.Preview;
     frp_stuff.free;

end;

procedure Tfrm_stuff.FormKeyPress(Sender: TObject; var Key: Char);
begin
 if Key = #13 then
    begin
      Key := #0;
      Perform(WM_NEXTDLGCTL, 0, 0);
    end;
end;

procedure Tfrm_stuff.FormDestroy(Sender: TObject);
begin
  frm_stuff:=nil
end;

end.