TCustomSourceItem = class(TCollectionItem)
class PASCALIMPLEMENTATION TCustomSourceItem : public System::Classes::TCollectionItem
Represents an item (without published properties) in a TSourceCollection collection.
Each TCustomSourceItem item has the MultiResBitmap property keeping a TMultiResBitmap multi-resolution bitmap. These multi-resolution bitmaps are original images, which are used to obtain images that can be shown as images stored in an TCustomImageList image list.