glhistoryform.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 GLHistoryForm;

interface

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

type
  TfrmGLHistory = class(TForm)
    Panel1: TPanel;
    MainMenu1: TMainMenu;
    tblGLAccnt: TTable;
    dsGLHist: TDataSource;
    DBGrid1: TDBGrid;
    cboFind: TComboBox;
    Label1: TLabel;
    mnuFile: TMenuItem;
    mnuView: TMenuItem;
    mnuHelp: TMenuItem;
    mnuFilter: TMenuItem;
    mnuSortBy: TMenuItem;
    mnuRefresh: TMenuItem;
    mnuGLAccountsHelp: TMenuItem;
    mnuPrint: TMenuItem;
    N2: TMenuItem;
    mnuExit: TMenuItem;
    Bevel1: TBevel;
    mnuSortName: TMenuItem;
    mnuSortAccountno: TMenuItem;
    editFind: TEdit;
    tblGLAccntGLAccount: TStringField;
    tblGLAccntAccountName: TStringField;
    qryGLHist: TQuery;
    tblGLAccntSuspended: TBooleanField;
    tblGLAccntAccountType: TSmallintField;
    N3: TMenuItem;
    qryGLHistGLAccount: TStringField;
    qryGLHistGLYear: TSmallintField;
    qryGLHistGLPeriod: TSmallintField;
    qryGLHistSource: TStringField;
    qryGLHistTransType: TStringField;
    qryGLHistJVNumber: TIntegerField;
    qryGLHistTransDate: TDateField;
    qryGLHistAmount: TCurrencyField;
    qryGLHistTransDescription: TStringField;
    qryGLHistVendorID: TIntegerField;
    qryGLHistAPInvoiceID: TIntegerField;
    qryGLHistCustomerID: TIntegerField;
    qryGLHistARInvoiceID: TIntegerField;
    qryGLHistAccountName: TStringField;
    qryGLHistAccountType: TSmallintField;
    qryGLHistPeriodppyyyy: TStringField;
    qryGLHistSourceType: TStringField;
    mnuSortJVno: TMenuItem;
    mnuSortAmount: TMenuItem;
    mnuSortDate: TMenuItem;
    mnuSortDateAscending: TMenuItem;
    mnuSortDateDescending: TMenuItem;
    mnuSource: TMenuItem;
    N1: TMenuItem;
    PopupMenu1: TPopupMenu;
    Source1: TMenuItem;
    qryGLHistChequeID: TIntegerField;
    qryGLHistPaymentID: TIntegerField;
    mnuJV: TMenuItem;
    JV1: TMenuItem;
    btnFilter: TSpeedButton;
    procedure mnuRefreshClick(Sender: TObject);
    procedure FormCreate(Sender: TObject);
    procedure Panel1DblClick(Sender: TObject);
    procedure cboFindDropDown(Sender: TObject);
    procedure cboFindKeyDown(Sender: TObject; var Key: Word;
      Shift: TShiftState);
    procedure cboFindClick(Sender: TObject);
    procedure cboFindKeyPress(Sender: TObject; var Key: Char);
    procedure FormShow(Sender: TObject);
    procedure editFindKeyPress(Sender: TObject; var Key: Char);
    procedure mnuExitClick(Sender: TObject);
    procedure mnuSortAccountnoClick(Sender: TObject);
    procedure mnuSortNameClick(Sender: TObject);
    procedure FormResize(Sender: TObject);
    procedure mnuPrintClick(Sender: TObject);
    procedure mnuFilterClick(Sender: TObject);
    procedure qryGLHistFilterRecord(DataSet: TDataSet;
      var Accept: Boolean);
    procedure tblGLAccntFilterRecord(DataSet: TDataSet;
      var Accept: Boolean);
    procedure qryGLHistCalcFields(DataSet: TDataSet);
    procedure mnuSortJVnoClick(Sender: TObject);
    procedure mnuSortAmountClick(Sender: TObject);
    procedure mnuSortDateAscendingClick(Sender: TObject);
    procedure mnuSortDateDescendingClick(Sender: TObject);
    procedure mnuSourceClick(Sender: TObject);
    procedure DBGrid1KeyPress(Sender: TObject; var Key: Char);
    procedure mnuJVClick(Sender: TObject);
    procedure mnuGLAccountsHelpClick(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  frmGLHistory: TfrmGLHistory;
  
implementation

uses BS1Form, GLHistoryFilterForm, APInvoiceForm, JVForm, APChequeForm,
  ARInvoiceForm, GLHistoryReport, ARPaymentForm;

var
  intClientHeight, intClientWidth: Integer;
  cboFind_GLAccounts: TStringList;
  OldWindowState: TWindowState;

{$R *.DFM}

procedure cboFind_Load(const Tbl: TTable; const Cbo: TCombobox);
begin
  Cbo.Items.Clear;   //Populate "find" combobox.
  cboFind_GLAccounts.Clear;
  Tbl.First;
  while not Tbl.EOF do begin
    Cbo.Items.Add(Tbl['AccountName']);
    cboFind_GLAccounts.Add(Tbl['GLAccount']);
    Tbl.Next;
  end;
  frmGLHistory_cboFind_RequeryRequired := false;
end;

procedure TfrmGLHistory.mnuRefreshClick(Sender: TObject);
var
  Bookmark: TBookmark;
begin
  screen.cursor := crHourglass;
  Bookmark := qryGLHist.GetBookmark;
  with qryGLHist do begin close; open; end;   //Refresh.
  try qryGLHist.GotoBookmark(Bookmark); except; end;
  qryGLHist.FreeBookmark(BookMark);
  screen.cursor := crDefault;
end;

procedure TfrmGLHistory.FormCreate(Sender: TObject);
var
  x: integer;
begin
  qryGLHist.DatabaseName := strDatabaseName;
  tblGLAccnt.DatabaseName := strDatabaseName;
  qryGLHist.Active := true;
  tblGLAccnt.Active := true;

  cboFind_GLAccounts := TStringList.create;   //Create a TStringList to store Accounts for the "find" combobox.
  cboFind_Load(tblGLAccnt, cboFind);   //Populate "find" combobox.

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

procedure TfrmGLHistory.cboFindDropDown(Sender: TObject);
begin
  if frmGLHistory_cboFind_RequeryRequired = true then cboFind_Load(tblGLAccnt, cboFind);   //Populate "find" combobox.
end;

procedure TfrmGLHistory.cboFindKeyDown(Sender: TObject; var Key: Word;
  Shift: TShiftState);
begin
  if frmGLHistory_cboFind_RequeryRequired = true then cboFind_Load(tblGLAccnt, cboFind);   //Populate "find" combobox.
end;

procedure TfrmGLHistory.cboFindClick(Sender: TObject);
begin
  if cboFind.Text = '' then exit;
  editFind.text := '';
  if cboFind.Items.IndexOf(cboFind.Text) < 0 then raise(Exception.Create('Choose an item from the list'));
  if qryGLHist.Locate('GLAccount', cboFind_GLAccounts[cboFind.ItemIndex], []) <> true then raise(Exception.Create('''' + cboFind.Text + '''' + ' not found'));
end;

procedure TfrmGLHistory.cboFindKeyPress(Sender: TObject; var Key: Char);
begin
  if key = #13 then begin
    Key := #0;   //Cancel Enter key.
    if (cboFind.Text = '') or (cboFind.Text = '<Account name>') then begin
      Perform(WM_NEXTDLGCTL, 0, 0);   //Advance to next control.
      exit;
    end;
    cboFindClick(Sender);   //Trigger click event (in case partial text was entered then combobox opened: item would show as selected, but Enter wouldn't process it).
    Perform(WM_NEXTDLGCTL, 0, 0);   //Advance to next control.
  end;
end;

procedure TfrmGLHistory.FormShow(Sender: TObject);
begin
  cboFind.ItemIndex := 0;   //Reset selected item to 1st (so down arrow scrolls from start).
  cboFind.text := '<Account name>';   //Clear selection.
  editFind.text := '<Account no.>';
  editFind.setfocus;
  editFind.SelectAll;
  qryGLHist.First;   //Reset grid to start at 1st record.
  if mnuFilter.checked = true then caption := 'GL History (Filtered)'
  else                             caption := 'GL History';
end;

procedure TfrmGLHistory.editFindKeyPress(Sender: TObject; var Key: Char);
begin
  if key = #13 then begin
    Key := #0;   //Cancel Enter key.
    if (editFind.Text = '') or (editFind.Text = '<Account no.>') then begin
      Perform(WM_NEXTDLGCTL, 0, 0);   //Advance to next control.
      exit;
    end;
    cboFind.text := '';
    if qryGLHist.Locate('GLAccount', editFind.Text, []) <> true then begin
      editFind.SelectAll;
      raise(Exception.Create('Account ' + '''' + editFind.Text + '''' + ' not found'));
    end else DBGrid1.setfocus;
  end;
end;

procedure TfrmGLHistory.mnuExitClick(Sender: TObject);
begin