custypesform.pas

功能全面的商业财会系统源码,清晰,很有参考价值.扩展性强.

unit CusTypesForm;

interface

uses
  Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
  DBCtrls, Grids, DBGrids, DB, DBTables, Menus, ExtCtrls, StdCtrls, Buttons, BDE;

type
  TfrmCusTypes = class(TForm)
    Panel1: TPanel;
    MainMenu1: TMainMenu;
    tblCusType: TTable;
    dsCusType: TDataSource;
    DBGrid1: TDBGrid;
    mnuFile: TMenuItem;
    mnuView: TMenuItem;
    mnuHelp: TMenuItem;
    mnuRefresh: TMenuItem;
    mnuCusTypesHelp: TMenuItem;
    mnuPrint: TMenuItem;
    N2: TMenuItem;
    mnuExit: TMenuItem;
    Bevel1: TBevel;
    btnNew: TSpeedButton;
    btnEdit: TSpeedButton;
    btnDelete: TSpeedButton;
    mnuRecords: TMenuItem;
    mnuNew: TMenuItem;
    mnuEdit: TMenuItem;
    mnuDelete: TMenuItem;
    tblCusTypeCustomerTypeID: TAutoIncField;
    tblCusTypeTypeName: TStringField;
    PopupMenu1: TPopupMenu;
    popNew: TMenuItem;
    popEdit: TMenuItem;
    popDelete: TMenuItem;
    procedure mnuRefreshClick(Sender: TObject);
    procedure tblCusTypeBeforeDelete(DataSet: TDataSet);
    procedure FormCreate(Sender: TObject);
    procedure Panel1DblClick(Sender: TObject);
    procedure DBGrid1KeyPress(Sender: TObject; var Key: Char);
    procedure FormShow(Sender: TObject);
    procedure mnuNewClick(Sender: TObject);
    procedure mnuEditClick(Sender: TObject);
    procedure mnuDeleteClick(Sender: TObject);
    procedure mnuExitClick(Sender: TObject);
    procedure FormResize(Sender: TObject);
    procedure mnuPrintClick(Sender: TObject);
    procedure mnuCusTypesHelpClick(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  frmCusTypes: TfrmCusTypes;

implementation

uses BS1Form, CusTypeForm, CusTypesReport, LookUpsData;

var
  intClientHeight, intClientWidth: Integer;
  OldWindowState: TWindowState;

{$R *.DFM}

procedure TfrmCusTypes.mnuRefreshClick(Sender: TObject);
begin
  tblCusType.refresh;
end;

procedure TfrmCusTypes.tblCusTypeBeforeDelete(DataSet: TDataSet);
begin
  if MessageDlg('Delete ' + '''' + tblCusTypeTypeName.AsString + '''' + '?',mtConfirmation,mbOKCancel,0) <> mrOK then raise(EAbort.create(''));   //Silent Exception: "abort;" replaced by "raise etc" since abort conflicts with BDE (required by DbiSaveChanges).

  dmLookUps.tblCustomer.Active := true;
  if dmLookUps.tblCustomer.Locate('CustomerTypeID', tblCusTypeCustomerTypeID.value, []) = true then raise(Exception.Create('Unable to delete ' + '''' + tblCusTypeTypeName.AsString + '''' + '...' + #13 + 'Customer(s) exist for this customer type'));
end;

procedure TfrmCusTypes.FormCreate(Sender: TObject);
var
  x: integer;
begin
  tblCusType.DatabaseName := strDatabaseName;
  tblCusType.Active := true;

  if FontFactor <> 1 then begin   //If using large fonts, resize grid columns.
    intClientWidth := Trunc(20*FontFactor) + DBGrid1.Columns.Count - 1;   //Scrollbar + grid lines.
    for x := 0 to DBGrid1.Columns.Count - 1 do begin
      DBGrid1.Columns[x].width := Trunc(DBGrid1.Columns[x].width*FontFactor);
      intClientWidth := intClientWidth + DBGrid1.Columns[x].width;
    end;
    ClientWidth := intClientWidth;
  end;
  intClientHeight := ClientHeight;   //Store form size.
  intClientWidth := ClientWidth;
end;

procedure TfrmCusTypes.Panel1DblClick(Sender: TObject);
begin
  ClientHeight := intClientHeight;   //Resize form.
  ClientWidth := intClientWidth;
end;

procedure TfrmCusTypes.DBGrid1KeyPress(Sender: TObject; var Key: Char);
begin
  if key = #13 then begin
    mnuEditClick(Sender);
    Key := #0;   //Cancel Enter key.
  end;
end;

procedure TfrmCusTypes.FormShow(Sender: TObject);
begin
  DBGrid1.setfocus;
  tblCusType.First;   //Reset grid to start at 1st record.
end;

procedure TfrmCusTypes.mnuNewClick(Sender: TObject);
begin
  screen.cursor := crHourglass;
  application.createform (TfrmCusType,frmCusType);
  frmCusType.tblCusType.Insert;
  frmCusType.Show;
  screen.cursor := crDefault;
end;

procedure TfrmCusTypes.mnuEditClick(Sender: TObject);
begin
  screen.cursor := crHourglass;
  application.createform (TfrmCusType,frmCusType);
  frmCusType.tblCusType.Locate('CustomerTypeID', tblCusTypeCustomerTypeID.value, []);
  frmCusType.Show;
  screen.cursor := crDefault;
end;

procedure TfrmCusTypes.mnuDeleteClick(Sender: TObject);
begin
  tblCusType.delete;
  DbiSaveChanges(tblCusType.handle);
end;

procedure TfrmCusTypes.mnuExitClick(Sender: TObject);
begin
  Close;
end;

procedure TfrmCusTypes.FormResize(Sender: TObject);
var
  Bookmark: TBookmark;
begin
  if (WindowState <> OldWindowState)   //Prevent grid resize bugs.
  and (WindowState <> wsMinimized)
  and (OldWindowState <> wsMinimized)
  then begin
    screen.cursor := crHourglass;
    Bookmark := tblCusType.GetBookmark;
    tblCusType.First;
    tblCusType.refresh;
    try tblCusType.GotoBookmark(Bookmark); except; end;
    tblCusType.FreeBookmark(BookMark);
    screen.cursor := crDefault;
  end;
  OldWindowState := WindowState;
end;

procedure TfrmCusTypes.mnuPrintClick(Sender: TObject);
begin
  screen.cursor := crHourglass;
  application.createform (TrptCusTypes,rptCusTypes);
  screen.cursor := crDefault;
  rptCusTypes.QuickReport.Preview;
end;

procedure TfrmCusTypes.mnuCusTypesHelpClick(Sender: TObject);
begin
  Application.HelpContext(250);
end;

end.