Solved

Displaying what I want in a treeview node.

Posted on 2003-12-08
6
255 Views
Last Modified: 2010-04-05
I want to control what text is being painted in a TreeView component. This is so I can add a rem like statment to the end of each node's text area, but I don't want this rem statment to be displayed. I'm Updating my component "PathTreeView" to do this.

I know that I can use the "OnCustomDrawItem" but the example that comes with D5 shows that I would have to handle the complet drawing of the node when I only just want to handle the text display. Is there a way to get around this and let the default drawing of the indents, lines, images and buttons be handled default and only edit the text display when it get's to it?

Giving the points for a example to learn from.

Thanks PPaul
0
Comment
Question by:PPaul
  • 2
  • 2
6 Comments
 
LVL 9

Accepted Solution

by:
mocarts earned 500 total points
ID: 9903217
hi, PPaul :)
just use #0 char delimiter for Text property:

implementation

function GetHiddenNodeText(node: TTreeNode): string;
var
  i: integer;
begin
  Result := node.Text;
  i := pos(#0, Result);
  if i > 0 then
    Result := Copy(Result, i+1, Length(Result)-1)
  else
    Result := '';
end;

procedure TForm1.FormCreate(Sender: TObject);
var
  nd: TTreeNode;
begin
  nd := TreeView1.Items.Add(nil, 'some simple text'+#0+'some hidden text');
  TreeView1.Items.AddChild(nd, 'Child1'+#0+'Child1HiddenData1');
  TreeView1.Items.AddChild(nd, 'Child2'+#0+'Child2HiddenData1');
  TreeView1.Items.AddChild(nd, 'Child3'+#0+'Child3HiddenData1');
end;

procedure TForm1.TreeView1Change(Sender: TObject; Node: TTreeNode);
begin
  Caption := GetHiddenNodeText(node);
end;

wbr, mo.
0
 

Author Comment

by:PPaul
ID: 9906115
That is cool... and it works.. but I found one problem with it... I'm giving you the points anyway.. The problem is that when you save the contents of the treeview to a file with SaveToFile, and then try to load it back in, it stops righ on the first #0, so the rest of the tree is not loaded in. Is there another code that can be used that will still give teh same hidden text but save to a file also?

Thanks

 
0
 
LVL 9

Expert Comment

by:mocarts
ID: 9907015
try this solution (also possible to save virtually all other properties of TTreeNode):
http://www.experts-exchange.com/Programming/Programming_Languages/Delphi/Q_20558338.html

wbr, mo.
0
 

Author Comment

by:PPaul
ID: 9909867
ok thanks... I'll lok at it.. you've been a big help :)

Thanks
PPaul
0

Featured Post

ScreenConnect 6.0 Free Trial

At ScreenConnect, partner feedback doesn't fall on deaf ears. We collected partner suggestions off of their virtual wish list and transformed them into one game-changing release: ScreenConnect 6.0. Explore all of the extras and enhancements for yourself!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Introduction The parallel port is a very commonly known port, it was widely used to connect a printer to the PC, if you look at the back of your computer, for those who don't have newer computers, there will be a port with 25 pins and a small print…
Introduction Raise your hands if you were as upset with FireMonkey as I was when I discovered that there was no TListview.  I use TListView in almost all of my applications I've written, and I was not going to compromise by resorting to TStringGrid…
This tutorial gives a high-level tour of the interface of Marketo (a marketing automation tool to help businesses track and engage prospective customers and drive them to purchase). You will see the main areas including Marketing Activities, Design …
Finds all prime numbers in a range requested and places them in a public primes() array. I've demostrated a template size of 30 (2 * 3 * 5) but larger templates can be built such 210  (2 * 3 * 5 * 7) or 2310  (2 * 3 * 5 * 7 * 11). The larger templa…

803 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question