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Discussions for CodeTyphon Object Pascal Programming Language
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Custom component and RTTI ImageIndex property 3 years 6 months ago #14138
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Hello!
I just can’t understand what needs to be done with the ImageIndex property in my own component, so that in the property editor instead of the image number a drop-down list with images is displayed. TMyComp = class(TComponent)
{ ... any methods and fields ...}
published
property ImageList : TCustomImageList read FImageList write SetImageList;
property ImageIndex : TImageIndex read FImageIndex write SetImageIndex default -1; // IDE Property Editor show only numbers, not images!
end;
How to make it like this: 
Attachments: |
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Custom component and RTTI ImageIndex property 3 years 6 months ago #14150
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I helped myself
 So that in the IDE property editor of custom component it is possible to select ImageIndex by image from associated ImageList, you need to register your own editor of the Image Index property: type
TMyImageIndexEditor = class(TImageIndexPropertyEditor )
protected
function GetImageList: TCustomImageList; override;
end;
function TMyImageIndexEditor.GetImageList: TCustomImageList;
begin
Result := (GetComponent(0) as TMyComponent).FImageList
end;
procedure Register;
begin
RegisterComponents('My Tool Tab',[TMyComponent]);
RegisterPropertyEditor(TypeInfo(TImageIndex), TMyComponent, 'ImageIndex', TMyImageIndexEditor);
end;Important: property names must be correct, i.e. Images and ImageIndex, as written in RegisterPropertyEditor. |
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