[HELP] Problem on JTree node mouse event !

I implement a JTree component in my application. Now, I want it acts like
windows XP's file explorer:
When mouse cursor hovers over some tree node, that node's text became underlined,
(font may be also changed as well) and the cursor changes to a 'hand'.
After mouse moves out, that node return to normal display status.
But I don't know how to do.
Any ideas?
Thanks a lot!

anybody out there?

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I have to say that i am using the exactly same code to achieve the same effect on a JButton and it works without any problem.
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is there a way to request my thread to be moved into Swing section? Well, the idea is to post the question in the proper forum in the first place.
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Problem with JScrollPane and Mouse Event in JDK 1.4

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In order to replicate the exact scenario, I have modified Sun's tutorial ScrollDemo2.java
* This code is based on an example provided by John Vella,
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import javax.swing.*;
import javax.swing.event.MouseInputAdapter;
import java.awt.*;
import java.awt.event.*;
import java.util.*;
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private Vector objects; // rectangular coordinates used to draw graphics
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Color.red, Color.blue, Color.green, Color.orange,
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objects = new Vector();
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I tried it . It didn't work.
Thanks for the suggestionI've got it... I know that inside the paitComponet method you can't call setSize() in jdk1.4, but you could in previous versions... that has caused al lot of problems to me...
Abraham

How to post an Event (mouse left click) to JTree node

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I am using JTree for my application just like the windows explorer tree. By default, Jtree node will got focus using left click. But, I'd like that my tree will detect a right click so that I can copy any file to the Jtree. I've added a mouselistener to it but the node is not selected by the right click. Anyboby can teach me how to post a mouse left click event to the Jtree so that it will become selected using left click.
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See if this is useful
public void mouseClicked(MouseEvent event)
Object object = event.getSource();
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Hi,
I created a JTree where the DefaultMutableTreeNode is created at run time and for this node, the leaf items are added dynamically.....Now my problem is, I should get a popup menu when i click on the treenode particularly-----
* Node1
-------Node11
-------Child1
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Regards,
Sarikakiran

Firstly, do you know how to detect the right click? (Use a MouseListener.)
When you receive the MouseEvent for the right-click, you can get the coordinates of the click (i.e. where on the JTree the mouse was clicked).
You can then use JTree.getPathForLocation to get the path for the clicked node, which is a TreePath object. Use TreePath.getLastPathComponent to find which node was actually clicked on.
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PopupMenu on Jtree nodes Please [b]Help me][/b]

how can I set my JpopupMenu to work on Jtree nodes and not on the tree?

how can I set my JpopupMenu to work on Jtree nodes
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Mouse event problem (NEW problem)

Sorry guys...
The last problem was solved, yes... but another one has shown
up!
Remember the code:
txt82.visible = false;
botao82.addEventListener(MouseEvent.MOUSE_OVER, botao82over);
botao82.addEventListener(MouseEvent.MOUSE_OUT, botao82out);
botao82.addEventListener(MouseEvent.CLICK, botao82click);
function botao82over(event: MouseEvent)
txt82.visible = true;
function botao82out(event: MouseEvent)
txt82.visible = false;
function botao82click(event: MouseEvent)
gotoAndPlay("video82");
where i wanted a texto to show or hide depending on the mouse
event?
Ok...
Now, when i CLICK, i'll go over to "video82" allright, but
i'll ALSO get an error!
"Cannot access a property or method of a null object
reference" - on botao82out
which means that: when i click and move up to "video82", the
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Any possibilities?
Erik.

Hi Haran,
bota82 IS the movieclip, which has to be like that because of
the naming of it's instance, used to get called in the code.
But anyway, guys, i found the solution! YEP! Increases
tremendously the code, but... well... it works!
i had the button layer extended all over the time.
The problem with this is that when i clicked and went to the
frame video82, for example, all the buttons still showed as
clickable.
How did i solve that?
More magic! Disappearing magic!
at the beginning of the code i certify the buttons to be
visible:
botao82.visible = true;
and so on with all of them...
then, right before the click function, i turned them all OFF
! :D
function botao82click(event: MouseEvent)
botao82.visible = false;
botao83.visible = false;
botao84.visible = false;
botao85.visible = false;
botao86.visible = false;
botao87.visible = false;
botao88.visible = false;
botao89.visible = false;
botao90.visible = false;
gotoAndPlay("video82");
Phew! It worked!
Know what? I think clearer when i discuss the problem with my
fellows here in the forum! Thanks everyone.
Hope this helps others in the future!
Erik.

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I've got a common problem but didn't found any solution for it.
I try to block input events (key and mouse events) after the user clicks on a tree node in the TreeSelectionListener.
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If the user make a double click than the blocking mechanism also blocks the mouse events to handle the additional expansion of the tree node.
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Thanks,
Steffen

I use the following code to blocking input events:
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thanks

Hi,
I have a JTree which has a mouse listener
ner associated with (which is used for right-click
operations)..,..anyway I am trying to disable the
tree, so I call setEnabled(false)...which, as
documented, disables the tree but it will still
receive mouse events. I also tried,
setEditable(false)..... the only way I can think of
is to remove the mouse listener, and then when I want
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is there some other way?Why do you want another way? This seems like a perfectly viable way to accomplish what you want.

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Iam building a JTree which should not allow node duplication.
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Hi all,
Any ideas to overcome this problem.?
Thanks,
Krish

Getting mouse events outside of nodes

Does anyone know how to get a mouse event to trigger outside of a nodes clip area? I am trying to write a game and follow the model/viewer/controller outline. I want the controller to handle the mouse events and the controller have no substance on the screen. Mouse events only seen to work when they are inside a node. My current fix is to make the controller appear on the screen as a giant rectangle of the background color. However if there is a better way I would appreciate it.

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How to do SelectAll() when during JTree node edit?

This question's been asked a few times but the answers haven't been very clear ( or the code that was posted was broken, etc. )
I have a JTree -- when the user edits a node, I want to initially select all the text in the .that node.
Does anyone have a SIMPLE, COMPLETE extension of a DefaultTreeCellEditor which does this? If so, please post. -- No fancy bells or whistles.
Thanks much.

...well, there is a very easy, but not clean way to do it:
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Capture mouse events

Hi all,
i want to capture mouse events like mousedown, mouseup and mousemove by clicking on the tree node of <htmlb:tree>.
Have any one some Idee?
Greeting,
ag

Hi all,
i solved with your help the problem as follows:
thank you all.
PS: how can i Reward and close this topic?
<%data l_replace type string.%>
<%concatenate 'onSubmit(' '''' 'OnInputProcessing(this.id)' '''' ',this.id' ')' into l_replace.%>
<bsp:findAndReplace find = 'onclick="' replace = 'onMouseDown="<%=l_replace%>;' >
<bsp:findAndReplace find1 = "<td" replace1 = "<td bgcolor=green" >
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                  table = "<%=p_0costtree %>"
                  title = "Tree Left"
                  width = "100%"
                  height = "100%"
                  onTreeClick = "TreeClicked"/>
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    </bsp:findAndReplace>

Mouse events don't work on a button from a panel ran in a DLL

Hi.
I have a DLL that loads a panel.
Since it's a DLL I can't do the RunUserInterface() function, because the DLL would be stuck waiting for the panel events.
I only do the LoadPanel().
When I click with the mouse on one of the buttons, the pushing down event (simulating the button being pressed) doesn't happen and the callback doesn't run.
But if I press the tab button until the focus reaches the button and press Enter, the callback of the button is executed.
An even more interesting aspect is that this happens when I call the DLL on TestStand, but on an application of mine that calls the DLL just for debug everything works fine.
How can I enable the mouse events?
Thanks for your help.
Daniel Coelho
VISToolkit - http://www.vistoolkit.com - Your Real Virtual Instrument Solution
Controlar - Electronica Industrial e Sistemas, Lda
Solved!
Go to Solution.

Hello Daniel,
I got surprised when I read your post, because I am experiencing something almost the same as you do.
I have a DLL (generated by an .fp instrument driver I wrote) which performs continious TCP communication with the UUT.
It starts 2 threads, each for reading from one of the 2 different IPs the UUT has.
Another DLL tests this UUT (with the help of the communication DLL above) by exporting functions to be called by TestStand steps.
If the second DLL wants to display a CVI panel in order to wait for the user response or displays a popup (MessagePopup, ConfirmPopup, etc), user cannot press the buttons.
Actually, there is a point your program and mine differ. I call RunUserInterface and the button's callbacks call QuitUserInterface, so the execution continues after a button is pressed. The problem is buttons cannot be pressed. I also tried looping on GetUserEvent but it did not solve the problem.
There are 2 findings:
1. I had a small exe to test my instrument driver DLL and the popups in it worked pretty well (this coincides with Daniel's findings).
2. We workedaround the problem by shutting down the communication threads in the instrument driver DLL before the popup appears and restrating them afterwards. Although they are separate threads in another DLL, they were somehow blocking user events on another DLL running.
S. Eren BALCI
www.aselsan.com.tr

Selection problem in JTree

Hi,
I am setting the selection mode for a JTree to be single selection. Suppose the node which I selected was in expanded state, after making the selection it is in collapsed state. Now suppose I want to resume the expanded state and again try to select the same node without making any intermediate selection the listener doesn't listen. But if I make make a different node selection in between the 2 consecutive selections made to the same node the 2nd selection is listened.
Is it something like if two similar selections are made one after the other the second one is discarded or not listened. If so how can I overcome this? If not please tell me where am I making the mistake.

selection will be fired only when the selection property changed. so, collapsing and expanding should be done in mouse event handlers.

[HELP] Problem on JTree node mouse event !

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