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Add&Win Game

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...Detect and Download a new version of (an own) application?
Autor: MT
Homepage: http://tsoft.home.ro
[ Print tip ]  

Tip Rating (15):  
     


uses
  
{...,}IniFiles, UrlMon,

    type
  
TForm1 = class(TForm)
    {...}
  
private
    
winsc: TiniFile;
    old: Integer;
    vernfo: TIniFile;
  end;
  
implementation

{$R *.dfm}

function DownloadFile(Source, Dest: string): Boolean;
  { Function for Downloading the file found on the net }
begin
  try
    
Result := UrlDownloadToFile(nil, PChar(Source), PChar(Dest), 0, nil) = 0;
  except
    
Result := False;
  end;
end;

function GetPathPath: string;
  { Retrive app path }
begin
  
Result := ExtractFilePath(Application.ExeName);
end;

procedure TForm1.DownLoadNewVersion1Click(Sender: TObject);
var
  
apath: string;
  new: Integer;
begin
  
// This is the exact code from my application
  
apath           := GetPathPath;
  Gauge1.Progress := 0;
  StatusBar1.SimplePanel := True;
  StatusBar1.SimpleText := 'Connecting to http://tsoft.home.ro';
  Gauge1.Progress := 20;
  if DownloadFile('http://www.tsoft.home.ro/update.ini', PChar(apath) + '/update.ini') then
  begin
    
Gauge1.Progress := 50;
    StatusBAr1.SimplePanel := True;
    StatusBar1.SimpleText := 'Checking for newer versions...';
    vernfo := TiniFile.Create(GetPathPath + '/update.ini');
    new    := vernfo.ReadInteger('version', 'wsc', 7);
    vernfo.Free;
    if (old = new) then
    begin
      
StatusBar1.SimplePanel := True;
      StatusBar1.SimpleText  := 'No new version detected';
      Gauge1.Progress        := 100;
    end
    else if 
DownloadFile('http://www.tsoft.home.ro/winsafe.exe',
      PChar(apath) + '/winsafe.exe') then
    begin
      
ShowMessage('Update succeseful');
      Gauge1.Progress := 100;
      winsc           := TIniFile.Create(ChangeFileExt(Application.ExeName, '.ini'));
      winsc.WriteInteger('wsc', 'vernfo', new);
      winsc.Free;
    end
    else 
      
MessageDlg('A new version has appeard but it requires a second install',
        mtInformation, [mbOK], 0);
  end
  else
  begin
    
StatusBar1.SimplePanel := True;
    StatusBar1.SimpleText  := 'Failed to connect probably a internet problem';
    Gauge1.Progress        := 0;
  end;
end;

procedure TForm1.FormCreate(Sender: TObject);
begin
  
//App version
  
winsc := TIniFile.Create(ChangeFileExt(Application.ExeName, '.ini'));
  try
    
old := winsc.ReadInteger('wsc', 'vernfo', 1);
  finally
    
winsc.Free;
  end;
end;

end.

{The concept is very simple u download a ini file from your website that contains
the version you compare it with the one from your computer and it downloads the
file if the versions are Not equal if you find any froblems write me.}


 

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