Re: [Lazarus] Own component - problem with default published property
On Wed, May 16, 2012 at 5:13 PM, cobines cobi...@gmail.com wrote: 2012/5/16 Krzysztof dib...@wp.pl: Or must I create new descendant of TMyProperty for each control and then change default value of SomeValue property? Yes, I think you have to do this. If you want to have different defaults for the property then you need to make different classes for them. Yes, this is somewhat annoying. In TAChart I tried to reduce the amount of extra code by setting the default value in the ancestor class based on RTTI. This way you need not override constructors of descendant properties. -- Alexander S. Klenin -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Own component - problem with default published property
If you changed the default you should publish it with: property Style default csDropDownList; If property has default value it is not written to LFM, in that case the value is whatever you set in constructor. -- cobines -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Own component - problem with default published property
But what if this is subproperty? For example: TMyProperty = class(TPersistent) published property SomeValue: TSomeType read FSomeValue write SetSomeValue default sv1 end; Can I do something like that: TMyControl1 = class(TControl) published MyProperty.SomeValue default sv2 end; TMyControl2 = class(TControl) published MyProperty.SomeValue default sv3 end; Or must I create new descendant of TMyProperty for each control and then change default value of SomeValue property? 2012/5/16 cobines cobi...@gmail.com: If you changed the default you should publish it with: property Style default csDropDownList; If property has default value it is not written to LFM, in that case the value is whatever you set in constructor. -- cobines -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Own component - problem with default published property
2012/5/16 Krzysztof dib...@wp.pl: Or must I create new descendant of TMyProperty for each control and then change default value of SomeValue property? Yes, I think you have to do this. If you want to have different defaults for the property then you need to make different classes for them. -- cobines -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
