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Author Topic: HowTo default the 1st entry as selected in a TreeView  (Read 469 times)

roger T

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HowTo default the 1st entry as selected in a TreeView
« on: June 25, 2024, 08:15:28 am »
Subject says most of it. When I click on an empty area of a treeview I get a SIGSEGV but do not if an item is already selected.
How do I set an entry as selected when the treeview is created

Cheers
Roger

TRon

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Re: HowTo default the 1st entry as selected in a TreeView
« Reply #1 on: June 25, 2024, 08:23:37 am »
Depending on your use case you could use  selected or select

cdbc

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Re: HowTo default the 1st entry as selected in a TreeView
« Reply #2 on: June 25, 2024, 08:46:15 am »
Hi
First the easy one:
Code: Pascal  [Select][+][-]
  1. TreeView1.Items[0].Selected:= true; // root node selected
Second: Do you by any chance, have an 'OnClick' event-handler for the treeview? Then you need to test for nil in that handler, explicitly for when user clicks /outside/ of nodes, but generally it's good practice with treeviews.
Regards Benny
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roger T

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Re: HowTo default the 1st entry as selected in a TreeView
« Reply #3 on: June 25, 2024, 08:48:06 am »
Brilliant. Thank you kindly
Cheers
Roger

 

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