[Lazarus] Component editors and related
vojtech.cihak at atlas.cz
Wed Apr 25 20:40:17 CEST 2018
ad 1: I never tried two level collection. Are they all published (both collections and their items)?
ad 2: You can do (in your component editor) something like:
var aHook: TPropertyEditorHook;
if not GetHook(aHook) then exit;
//add or insert:
aHook.PersistentAdded(AddedItem, True); //this notifies component tree
aHook.SelectOnlyThis(AddedItem); //this selects added object
aHook.DeletePersistent(TPersistent(DeletedItem)); //this notifies component tree
> Od: Werner Pamler via Lazarus <lazarus at lists.lazarus-ide.org>
> Komu: Lazarus mailing list <lazarus at lists.lazarus-ide.org>
> Datum: 25.04.2018 19:56
> Předmět: [Lazarus] Component editors and related
currently I am porting those JVCL components which look interesting to
but at the moment I am stuck with the component editor of the
TJvOutlookBar. This is some kind of two-level vertical menu. The top
level is a list of TJvOutlookBarPage items, and each page has a list of
TJvOutlookbarButton items as second level. Both lists inherit from
TCollection. My problem is that in the component tree of the object
inspector I see only the page items, but not the button "sub-items". See
attached screen shot of Lazarus and the Delphi version for comparison.
How can I make the button subnodes appear in the component tree?
Another problem: The component comes with a ComponentEditor for the
entire class, which looks similar to that of a TCollection, but contains
a treeview to display the page-button relationships. After some
twiddling around I was able to make this work in Lazarus, i.e. when I
add nodes to the tree in the component editor the corresponding buttons
or pages are added to the control on the form designer; and when I
navigate in the component editor's tree the selected object follows in
the component tree and in the object inspector. But the opposite
direction does not work: When I add a page or button in the object
inspector (by using the Pages and Buttons collection property editors)
the tree in the component editor is not updated. How can I do this?
Any hints greatly appreciated.
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