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    <p><code>TMyClass3</code> needs to derive from <code>TPersistent</code> in order to be streamable in a DFM. It should also optionally override the virtual <code>Assign()</code> method, which <code>SetMyProperty()</code> would then be able to call.</p> <p>Try this:</p> <pre><code>unit MyComponentTest3; interface uses Windows, ExtCtrls, Classes, Controls; type TMyClass3 = class(TPersistent) private FMyString: string; FMyNumber: double; public procedure Assign(Source: TPersistent); override; published property myString: string read FMyString write FMyString; property myNumber: double read FMyNumber write FMyNumber; end; TMyComponentTest3 = class(TCustomPanel) private FMyProperty: TMyClass3; procedure SetMyProperty(Value: TMyClass3); public constructor Create(AOwner: TComponent); override; destructor Destroy; override; procedure SetMyPropertyPublic(AmyString: string; AmyNumber: double); published property MyProperty: TMyClass3 read FMyProperty write SetMyProperty; end; procedure Register; implementation procedure Register; begin RegisterComponents('MyComponents', [TMyComponentTest3]); end; { TMyClass3 } procedure TMyClass3.Assign(Source: TPersistent); begin if Source is TMyClass3 then begin with TMyClass3(Source) do begin Self.FMyString := myString; Self.FMyNumber := myNumber; end; end else inherited; end; { TMyComponentTest3 } constructor TMyComponentTest3.Create(AOwner: TComponent); begin inherited; FMyProperty := TMyClass3.Create; end; destructor TMyComponentTest3.Destroy; begin FMyProperty.Free; inherited; end; procedure TMyComponentTest3.SetMyProperty(Value: TMyClass3); begin FMyProperty.Assign(Value); end; procedure TMyComponentTest3.SetMyPropertyPublic(AmyString: string; AmyNumber: double); begin with MyProperty do begin myString := AmyString; myNumber := AmyNumber; end; end; end. </code></pre>
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    1. POValues of a property at design time, doesn't appear at run time
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    1. USRemy Lebeau
    1. USRemy Lebeau
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    1. POValues of a property at design time, doesn't appear at run time
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    2. VO
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    1. CONothing... it seems that it doesn't reach this assign procedure, the values are still not appearing at run time and I put a message inside the assign procedure to check and it never shows it
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      1. USFelipe
    2. CO`Assign()` is not going to be called, because the property setter is not called during DFM streaming. That suggestion was merely to cleanup your setter and implement better encapsulation. Your problem is something else, but you still need to start with the basics - derive from `TPersistent`, make the sub-values themselves be published properties, etc. What you describe suggests the values are not being saved to the DFM to begin with, thus are not present to be loaded later.
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      1. USRemy Lebeau
    3. COthanks for the help, I will try again your suggestions.
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      1. USFelipe
 

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