Saving last status of panels

Gertjan

Hi,

I have a very simple delphi 2010 form application containing a dock manager, dock site en 1 panel. At FormShow I try to restore the last status, at FormDestroy I want to save it. This only works as long as my panel is docked. If it's floating during program close its state is not saved. It even doesn't appear in the xml-file anymore.

I also want to add some runtime created panels, but they aren't saved in the last status xml either. What am I missing?

Below is the source code of my project.

Regards and thanks,

Gertjan

unit MyDemo;

interface

uses

  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,

  Dialogs, LMDDckSite;

type

  TForm1 = class(TForm)

    LMDDockSite1: TLMDDockSite;

    LMDDockManager1: TLMDDockManager;

    LMDDockPanel1: TLMDDockPanel;

    procedure FormShow(Sender: TObject);

    procedure FormDestroy(Sender: TObject);

    procedure FormCreate(Sender: TObject);

  private

    { Private declarations }

  public

    { Public declarations }

  end;

var

  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.FormCreate(Sender: TObject);

var

  APanel : TLMDDockPanel;

begin

  APanel          := TLMDDockPanel.Create(self);

  APanel.Parent   := LMDDockSite1;

  APanel.Caption  := 'Runtime created dock';

  LMDDockSite1.DockControl(APanel,nil,alLeft);

end;

procedure TForm1.FormDestroy(Sender: TObject);

begin

  LMDDockManager1.SaveToFile('c:\test\state.xml');

end;

procedure TForm1.FormShow(Sender: TObject);

begin

  if FileExists('c:\test\state.xml') then

    LMDDockManager1.LoadFromFile('c:\test\state.xml');

end;

end.

balabuev

Hi,

1) Your runtime panel is not saved because it has no name. Some identifier (string) should be saved into XML to aloow later to find a panel while loading layout. So, you can specify usual Name property value or, if you don't want to use Delphi Name property, you can write event handlers for manager's OnGetComp and OnGetCompId events to implement custom idetifiers association.

2) Your floating sites are not stored because at the point when you  save layout, they are already destroyed. All forms, including floating forms are children of global standard Application object. and while application termination it destroys forms one by one. Main form is destroyed last. 

So, do not use OnDestroy to save layout, use OnClose instead.

Gertjan

That's lot, that solved my problem!

Regards,

Gertjan