frm_currencyinfo.pas

这是一个基于delphi平台的物流空运管理系统！

unit Frm_CurrencyInfo;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, Frm_Cargo, XPMenu, ComCtrls, DB, ADODB, StdCtrls, Buttons,
  ExtCtrls;

type
  TFrmCurrencyInfo = class(TFrmCargo)
    Panel1: TPanel;
    Panel2: TPanel;
    BtnCancel: TBitBtn;
    BtnNew: TBitBtn;
    BtnDelete: TBitBtn;
    BtnEdit: TBitBtn;
    QryTemp: TADOQuery;
    LV: TListView;
    procedure FormCreate(Sender: TObject);
    procedure BtnNewClick(Sender: TObject);
    procedure BtnEditClick(Sender: TObject);
    procedure BtnDeleteClick(Sender: TObject);
    procedure BtnCancelClick(Sender: TObject);
    procedure FormDestroy(Sender: TObject);
    procedure LVDblClick(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  FrmCurrencyInfo: TFrmCurrencyInfo;

implementation

uses Frm_Main, Frm_CurrencyEdit;

{$R *.dfm}

procedure TFrmCurrencyInfo.FormCreate(Sender: TObject);
begin
  inherited;
  QryTemp.Close;
  QryTemp.sql.text := 'Select Code,Name,CName,Rate,DoDate,Remark from Currency';
  QryTemp.open;

  FrmMain.addcolumn(LV, '汇率代码', 100);
  FrmMain.AddColumn(LV, '英文名称', 160);
  FrmMain.addcolumn(LV, '中文名称', 160);
  FrmMain.addcolumn(LV, '费   率', 100);
  FrmMain.addcolumn(LV, '执行日期', 160);
  FrmMain.addcolumn(LV, '备   注', 160);
  FrmMain.AddData(LV, QryTemp);
end;

procedure TFrmCurrencyInfo.BtnNewClick(Sender: TObject);
begin
  inherited;
  if FrmMain.IncludeValue('币种维护') then
  else
  begin
    ShowMessage('对不起，你不具有该操作的权限！');
    exit;
  end;
  FrmCurrencyEdit := TFrmCurrencyEdit.Create(Self);
  FrmCurrencyEdit.IsEdit := False;
  FrmCurrencyEdit.CurrencyCode := '';
  FrmCurrencyEdit.ShowModal;
end;

procedure TFrmCurrencyInfo.BtnEditClick(Sender: TObject);
begin
  inherited;
  if LV.SelCount = 0 then
  begin
    ShowMessage('请选择一条记录进行编辑!');
    exit;
  end;
  FrmCurrencyEdit := TFrmCurrencyEdit.Create(self);
  FrmCurrencyEdit.IsEdit := True;
  FrmCurrencyEdit.CurrencyCode := LV.Selected.Caption;
  FrmCurrencyEdit.BtnAdd.Enabled := True;
  FrmCurrencyEdit.ShowModal;
end;

procedure TFrmCurrencyInfo.BtnDeleteClick(Sender: TObject);
var
  SqlStr: string;
begin
  inherited;
  if FrmMain.IncludeValue('普通代码维护') then
  else
  begin
    ShowMessage('对不起，你不具有该操作的权限！');
    exit;
  end;

  if lv.Items.Count = 0 then
  begin
    ShowMessage('记录集为空,不能够删除');
    exit;
  end;
  if LV.SelCount = 0 then
  begin
    ShowMessage('请选取窗体中的一行!');
    exit; //如果没有选取行
  end;

  if MessageDlg('是否删除所选中的记录,请确定', mtConfirmation, [mbYes, mbNo], 0)
    = mrNO then
    exit;

  try
    SqlStr := 'Delete From Currency Where Code=''' + LV.Selected.Caption +
      '''';
    if FrmMain.ExecSQL(SqlStr) then
    else
    begin
      ShowMessage('记录删除失败,请检查!');
      exit;
    end;

    LV.Selected.Delete;

  except
    ShowMessage('删除操作进行失败,请检查!');
    Exit;
  end;
end;

procedure TFrmCurrencyInfo.BtnCancelClick(Sender: TObject);
begin
  inherited;
  Close;
end;

procedure TFrmCurrencyInfo.FormDestroy(Sender: TObject);
begin
  inherited;
  FrmCurrencyInfo:=nil;
end;

procedure TFrmCurrencyInfo.LVDblClick(Sender: TObject);
begin
  inherited;
  BtnEditClick(Sender);
end;

end.