Component property editor

[Nordlund]

Hi there.
Does anyone know about examples and/or documents about writing property editors without using DegignIntF?



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[DelphiAaron]

can we ask why you have a problem with dsgnintf ?

Aaron

 

[Nordlund]

Sorry mate - I was wrong when I specified my problem.
Here is the real problem:

I want to build a component (Combobox) with filter capabilities. To make it easy I want to store the data in a TList like this (I have simplified the class structure for this post):

TComboItem = class
  Visible: Boolean;
  Text: String;
  Data: TObject
end;

TComboList = class // Should the list be inherited from TList instead?
  FList: TList; // List of TComboItem
end;

TMyCombo = class
published
  Items: TComboList read FComboList;
end;

I want to do a Designtime Propertyeditor for this TComboList object - How should i proceed?

I'm using Delphi 7



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[DelphiAaron]

have a read of these should get you started

http://delphi.about.com/library/bluc/text/uc092501a.htm

http://www.drbob42.com/delphi/property.htm

Aaron

 

[Nordlund]

Yeas, I have also read these.

When I add the DesignIntF unit, in my component unit, I always get the error that the compiler can't find the unit.

Do I have to add the ToolsAPI directory in my Librarypath?

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[Nordlund]

I'm examining in the Toolbar200 componentpack (

http://www.jrsoftware.com)

and in one unit, the uses clause are contructed like this:

uses
  Windows, SysUtils, Classes, Graphics, Controls, Dialogs, ActnList, ImgList,
  [b]{$IFDEF JR_D6}[/b] DesignIntf, DesignEditors, VCLEditors, [b]{$ELSE}[/b] DsgnIntf, [b]{$ENDIF}[/b]
  TB2Toolbar, TB2ToolWindow, TB2Dock, TB2Item, TB2ExtItems, TB2MRU, TB2MDI,
  TB2DsgnItemEditor;

When I try to add the same units (DesignIntf/DsgnIntf) the project doesnt compile.

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[Nordlund]

Link correction:

http://www.jrsoftware.org

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[whosrdaddy]

Nordlund,

you'll need to make a package for your component.

- add DesignIntF and DesignEditors to the property editor unit.
- make sure that design time package is checked in the package options.
- add DesignIDE unit in the package source file.

that should do it.

/Daddy

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