main.cpp

AbsDataBase5.16 最新版

//---------------------------------------------------------------------------
#include <vcl.h>
#pragma hdrstop

#include "Main.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma link "ABSMain"
#pragma resource "*.dfm"
TForm1 *Form1;

const AnsiString DataBaseFileName = "..\\..\\Data\\Demos.abs";

//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner)
        : TForm(Owner)
{
}
//---------------------------------------------------------------------------
void __fastcall TForm1::FormCreate(TObject *Sender)
{
  dbDemos->DatabaseFileName = ExtractFilePath(Application->ExeName) + DataBaseFileName;
  dbDemos->Open();
  EnableDisableControls();
}
//---------------------------------------------------------------------------
void __fastcall TForm1::btnCreateAndOpenClick(TObject *Sender)
{
  Query->Close();
  Query->SQL->Text = mSQL->Text;
  Query->Open();
  EnableDisableControls();
}
//---------------------------------------------------------------------------
void __fastcall TForm1::btnSaveClick(TObject *Sender)
{
  if (tFriends->Exists)
    tFriends->DeleteTable();
  tFriendsInMemory->CopyTable(tFriends->TableName, dbDemos->DatabaseFileName, "");
  EnableDisableControls();
}
//---------------------------------------------------------------------------
void __fastcall TForm1::btnLoadClick(TObject *Sender)
{
  Query->Close();
  if (tFriendsInMemory->Exists)
    tFriendsInMemory->DeleteTable();
  tFriends->CopyTable(tFriendsInMemory->TableName, "MEMORY", "");
  mSQL->Text = "select * from friends";
  btnCreateAndOpenClick(Sender);
  btnCreateAndOpen->Enabled = False;
}
//---------------------------------------------------------------------------
void __fastcall TForm1::EnableDisableControls()
{
  btnSave->Enabled = tFriendsInMemory->Exists;
  btnLoad->Enabled = tFriends->Exists;
}
//---------------------------------------------------------------------------