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Treeview question for Lischke

Posted on 2000-05-18
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Last Modified: 2010-04-04
Hi all,

How can I traverse a tree. I am using Lischke's TreeNT and would like to be able to traverse the tree, check a node's associated data and then decide whether or not to manipulate the node (ie. bold it or color it). Maybe even put a checkbox radiobutton next to it. Although the colors will suffice.

I would appreciate some help. Thanx.
Fats
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Question by:ffelaar
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4 Comments
 
LVL 10

Accepted Solution

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Lischke earned 288 total points
ID: 2820779
Hi ffelaar,

iterating through it tree is quite easy when using the usual navigation functions like GetNext, GetNextVisible, GetNextSibling, GetNextChild or GetNextSelected (similar for previous nodes). So what you essentially need is a start point and the proper navigation function in a loop:

var
  Node: TTreeNTNode;
  Data: PMyData;

begin
  Node := TreeNT1.GetFirstNode;
  while Assigned(Node) do
  begin
    Data := Node.Data;
    // act here depending on data
    ...
    // get next node in order (could also be the sibling etc.)
    Node := Node.GetNext;
  end;
end;

Ciao, Mike
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LVL 10

Expert Comment

by:Lischke
ID: 2846801
Did you read my comment?
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Author Comment

by:ffelaar
ID: 2883841
Comment accepted as answer
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Author Comment

by:ffelaar
ID: 2883842
Thank you.
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