bookmove.pas

1、系统环境要求：WindowsXP/2000 2、DELPHI7.0企业版 3、如果数据库为SQL Server数据库

unit bookmove;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, baseform, Grids, StdCtrls, ExtCtrls, ComCtrls, DB, DBGrids,adodb;

type
  Tf_bookmove = class(Tf_baseform)
    Grid: TStringGrid;
    Panel3: TPanel;
    Label6: TLabel;
    Label7: TLabel;
    Barcode: TEdit;
    Bookname: TEdit;
    Label1: TLabel;
    Num: TEdit;
    Panel1: TPanel;
    Label2: TLabel;
    Label3: TLabel;
    Label8: TLabel;
    Operator: TEdit;
    Storage: TComboBox;
    Counter: TComboBox;
    Label12: TLabel;
    Picker1: TDateTimePicker;
    Label4: TLabel;
    Panel2: TPanel;
    Save: TButton;
    Cancel: TButton;
    Quit: TButton;
    Grid1: TDBGrid;
    Source1: TDataSource;
    procedure QuitClick(Sender: TObject);
    procedure FormShow(Sender: TObject);
    procedure CancelClick(Sender: TObject);
    procedure BooknameChange(Sender: TObject);
    procedure NumKeyPress(Sender: TObject; var Key: Char);
    procedure BarcodeKeyPress(Sender: TObject; var Key: Char);
    procedure BooknameKeyPress(Sender: TObject; var Key: Char);
    procedure BarcodeKeyDown(Sender: TObject; var Key: Word;
      Shift: TShiftState);
    procedure Grid1DblClick(Sender: TObject);
    procedure Grid1KeyDown(Sender: TObject; var Key: Word;
      Shift: TShiftState);
    procedure GridSelectCell(Sender: TObject; ACol, ARow: Integer;
      var CanSelect: Boolean);
    procedure GridKeyDown(Sender: TObject; var Key: Word;
      Shift: TShiftState);
    procedure StorageKeyDown(Sender: TObject; var Key: Word;
      Shift: TShiftState);
    procedure StorageEnter(Sender: TObject);
    procedure Grid1Exit(Sender: TObject);
    procedure SaveClick(Sender: TObject);
  private
    { Private declarations }
  public
    procedure ClearAddinfo;
    procedure ClearGrid;
    Function DetailIsNull: Boolean;
    Function MasterIsNull: Boolean;
    Function StorageAndCounterIsValid: Boolean;
    Function GridIsNull: Boolean;
    { Public declarations }
  end;

var
  f_bookmove: Tf_bookmove;
  x:integer = 1;
  y:Integer = 0;
const
  c_barcode = 0;
  c_bookname = 1;
  c_num = 2;
implementation
  uses data,main;
{$R *.dfm}

procedure Tf_bookmove.QuitClick(Sender: TObject);
begin
  inherited;
  Close;
end;

procedure Tf_bookmove.FormShow(Sender: TObject);
begin
  inherited;
  Grid.Cells[c_barcode,0]:= '条形码';
  Grid.Cells[c_bookname,0]:= '书籍名称';
  Grid.Cells[c_num,0]:='数量';
  Operator.Text := Username;
  With t_data.Query1 do
  begin
    Close;
    SQL.Clear;
    SQL.Add('select depotname from tb_depotinfo');
    Open;
  end;
  while Not t_data.Query1.Eof do
  begin
    Storage.Items.Add(Trim(t_data.Query1.Fields[0].Value));
    t_data.Query1.Next;
  end;
  With t_data.Query1 do
  begin
    Close;
    SQL.Clear;
    SQL.Add('select counter from tb_counter');
    Open;
  end;
  while Not t_data.Query1.Eof do
  begin
    Counter.Items.Add(Trim(t_data.Query1.Fields[0].Value));
    t_data.Query1.Next;
  end;
  Cancel.Click;
end;

procedure Tf_bookmove.CancelClick(Sender: TObject);
begin
  inherited;
  Storage.ItemIndex := -1;
  Counter.ItemIndex := -1;
  Picker1.DateTime := Now;
  ClearAddinfo;
  ClearGrid;
end;

procedure Tf_bookmove.ClearAddinfo;
var
  i: Integer;
begin
  For i := 0 to Panel3.ControlCount-1 do
    if Panel3.Controls[i]is TEdit then
      TEdit(Panel3.Controls[i]).Clear;
end;

procedure Tf_bookmove.ClearGrid;
var
  i,j: Integer;
begin
  For i := 1 to Grid.RowCount-1 do
    For j := 0 to Grid.ColCount-1 do
      Grid.Cells[j,i]:= '';
  Grid.RowCount := 2;    
end;

procedure Tf_bookmove.BooknameChange(Sender: TObject);
begin
  inherited;
  If Trim(Bookname.Text)<>'' then
  begin
    With t_data.Query1 do
    begin
      Close;
      SQL.Clear;
      SQL.Add('select * from tb_bookinfo where bookname like :name');
      Parameters.ParamByName('name').Value := Trim(Bookname.Text)+'%';
      Open;
    end;
    if t_data.Query1.RecordCount>0 then
    begin
      Source1.DataSet := t_data.Query1;
      Grid1.Visible := True;
    end
    else
    begin
      t_data.Query1.Close;
      Grid1.Visible := False;
    end;
  end;
end;

procedure Tf_bookmove.NumKeyPress(Sender: TObject; var Key: Char);
begin
  inherited;
  if Not (Key in ['0'..'9','.',#8])then
    Key := #0
  else if (key = '.') then
    Key := #0;
end;

procedure Tf_bookmove.BarcodeKeyPress(Sender: TObject; var Key: Char);
begin
  inherited;
   if (Not (Key in ['0'..'9',#8]))or(Trim(Bookname.Text)<>'') then
    Key := #0;
end;

procedure Tf_bookmove.BooknameKeyPress(Sender: TObject; var Key: Char);
begin
  inherited;
  if Trim(barcode.Text)<>'' then
    Key := #0;
end;

procedure Tf_bookmove.BarcodeKeyDown(Sender: TObject; var Key: Word;
  Shift: TShiftState);
begin
  inherited;
  if Key = vk_delete then
    Key := 0;
  if Key = vk_Return then
  begin
    if Sender is TEdit then
      if (Trim(Barcode.Text)<>'')and(Trim(Bookname.Text)='')and(TEdit(Sender).Name = 'Barcode') then
      begin
        With t_data.Query1 do
        begin
          Close;
          SQL.Clear;
          SQL.Add('select * from tb_bookinfo where barcode = :barcode');
          Parameters.ParamByName('barcode').Value := Trim(Barcode.Text);
          Open;
        end;
        if t_data.Query1.RecordCount>0 then
        begin
          Barcode.Text := Trim(t_data.Query1.FieldByName('barcode').AsString);
          Bookname.Text := Trim(t_data.Query1.FieldByName('bookname').AsString);
        end
        else
          Application.MessageBox('该条形码不存在.','提示',64);
      end
      else if (TEdit(Sender).Name = 'Bookname')and(Trim(Bookname.Text)<>'')and(Trim(Barcode.Text)='') then
      begin
        With t_data.Query1 do
        begin
          Close;
          SQL.Clear;
          SQL.Add('select * from tb_bookinfo where bookname = :name');
          Parameters.ParamByName('name').Value := Trim(Bookname.Text);
          Open;
        end;
        if t_data.Query1.RecordCount>0 then
        begin
          Barcode.Text := Trim(t_data.Query1.FieldByName('barcode').AsString);
          Bookname.Text := Trim(t_data.Query1.FieldByName('bookname').AsString);
        end
        else
          Application.MessageBox('该书籍不存在.','提示',64);
      end;
    FindNext(True);
  end
  else if (Key = vk_control)and(Grid1.Visible = True) then
    Grid1.SetFocus
  else if (Key = vk_insert)and(DetailIsNull = False) then
  begin
    With t_data.Query1 do
    begin
      Close;
      SQL.Clear;
      SQL.Add('Select * from tb_bookdepot where depot = :depot and barcode = :barcode ');
      Parameters.ParamByName('depot').Value := Trim(Storage.Text);
      Parameters.ParamByName('barcode').Value := Trim(Barcode.Text);
      Open;
    end;
    if t_data.Query1.RecordCount<1 then
    begin
      Application.MessageBox('该图书在仓库中不存在.','提示',64);
      Exit;
    end;
    Grid.Cells[c_barcode,Grid.RowCount-1]:= Trim(Barcode.Text);
    Grid.Cells[c_bookname,Grid.RowCount-1]:= Trim(Bookname.Text);
    Grid.Cells[c_num,Grid.RowCount-1]:= Trim(Num.Text);
    Grid.RowCount := Grid.RowCount+1;
    ClearAddinfo;
  end
  else if Key =vk_escape then
  begin
    ClearAddInfo;
  end;
end;