TOwnedCollection is a TCollection descendant maintaining an "Owner" in order to obtain property path information at design-time. It is defined in Classes.pas unit.
Questions tagged [townedcollection]
6 questions
7
votes
2 answers
How to invoke a component's property editor at design time
I have created a component derived from TCustomPanel. On that panel I have a published property of a class derived from TOwnedCollection. All is working well and clicking the ellipsis in the object inspector for that property opens the default…
avenmore
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5
votes
1 answer
Using TOwnedCollection descendant in Delphi
I'm trying to create a custom component with a collection property. However if I try to open the collection editor during design time by clicking "..." button in object inspector, nothing happens. What I am missing?
Here's my TCollection…
Harriv
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1
vote
1 answer
delphi TCollection count not increasing after Add
i have the types
TNotifyReply = class(TCollectionItem)
TNotifyReplylist = class(TOwnedCollection)
NotifyReplylist := TNotifyReplylist.Create(self, TNotifyReply);
After calling this function (Any number of times), Count it still zero
function…
Christopher Chase
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1
vote
1 answer
TCollection PropertyEditor with editable Columns
for my own TCollection descendant I want to extend the collection property editor. I want to see more columns for other properties of my TCollectionItem. And I am a lucky because it is pretty easy. The only thing I want to do was to override these…
Heinz Z.
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0
votes
1 answer
How to add a 2-times derived class of TCollectionItem to TOwnedCollection?
I want to implement a collection or list using TOwnedCollection / TCollectionItem. I need a persistent list (to load and create from a FileStream) of classes with polymorphism.
Here is (part of) my code so far, but I didn't succeed to create the…
Lotfi
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0
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1 answer
Using TCollection with an already-defined class
(Note: This is somewhat related to my last question).
I am new to using TCollection in Delphi, and am still wrapping my head around the various ways to handle one-to-many class/property-item relationships. Exploring TCollection and TCollectionItem,…
Jamo
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