TreeSelectionListener detect if mouse click

hi,
i've got a JTree and I'm using a TreeSelectionListener to carry out different actions when the user clicks on nodes. however, sometimes i want to change the selection on the tree programmatically (i know how to do this bit), and for the action associated with clicking on the node not to happen.
is it possible within the valueChanged method of the TreeSelectionListener to determine if the selection was changed by a mouse click or programmatically? or can anyone think of another way to approach this?
cheers for any help!

You can't do that with the event, but if you create a boolean variable named for example
boolean programSelection = false;
and when you change the selection programmatically you put the value to true. In the method valueChanged you have to test the value of programSelection like that :
public void valueChanged(ChangeEvent e) {
   if (programSelection) {
      // the code when the selection come from the program
     programSelection = false;
   else {
      // the code when the selection come from the user
}

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mouse1.vi ‏12 KB

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Mouse Clicks/Positons in Pictures!

Even a guru learns new things...
I just discovered the use of a picture control/indicator to detect mouse positions and clicks! What a wonderful thing. I have LabVIEW 6.0.2, and have, up to now, not known about this. To all those out there who I recommended to use the mouse click API for Windows, I apologize. This is such a marvelous way to get Mouse information. It's easy, efficient, and completely held within LabVIEW.
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Hi,
This is ideal for some applications, you can even build drag/drop functions
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The picture control needs to cover the entire area you need information on.
This implies that normal functions of controls and indicators cannot be
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It also makes the screen updates take a lot more proccessor time, because
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Regards,
Wiebe.
"Labviewguru" wrote in message
news:[email protected]..
> Even a guru learns new things..
>
> I just discovered the use of a picture control/indicator to detect
> mouse positions and clicks! What a wonderful thing. I have LabVIEW
> 6.0.2, and have, up to now, not known about this. To all those out
> there who I recommended to use the mouse click API for Windows, I
> apologize. This is such a marvelous way to get Mouse information.
> It's easy, efficient, and completely held within LabVIEW.
>
> If anyone is wondering what I am talking about, go to Help>Examples in
> LabVIEW and go to the Examples>Advanced Examples>Picture Control
> Examples>Mouse Control.vi to see what I mean. I didn't realize that
> if you dropped a picture control (even as an invisible object!) on the
> front panel that you could use property nodes to get x and y
> positions, and also the left, right, shift left or right, and third
> mouse button click information.
>
> Of course, I hear that this may all be somewhat obsolete in LabVIEW
> 6.1, but for those still using 6.01 or earlier, it's a great t
ool that
> means you don't have to mess with API, MFC or dlls.
>
> Any comments or questions?

Incorrect detection of double-clicks in layers and channels windows. (Mac OS X 10.6.8)

Photoshop will detect a double-click in the layers and channels panels even when there are different modifier keys held down on the first click vs. the second click.
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I realize that the conventions for what constitutes a double-click are platform dependent and not particularly well documented, but I do expect Photoshop to work the way that my operating system does (Mac OS X 10.6.8)). I know older versions of Windows detected double-clicks even when modifiers were changed between clicks, but I believe the latest versions behave similarly to OS X.
Examples:
Start by having a document open with multiple alpha channels and layers in it.
Select an alpha channel by clicking on it's thumbnail in the channels panel.
Quickly hold down the control key and click again.
Result: this brings up the "Channel Options" window. (as if you had double-clicked)
Expected result: should bring up the channel's contextual menu.
Bonus extra nitpick: The window opened on mouse-down, not on mouse-up.
Create a non-blank alpha channel.
Hold down the command key and click on that alpha channel's thumbnail. (loads the channel into the selection)
Quickly release the command key and press the mouse button.
Result: Brings up the "Channel Options" window. (as if you had double-clicked)
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Move the mouse pointer to a different layer.
Hold down the shift key and click to select multiple layers.
Quickly release the shift key and press the mouse button.
Result: Brings up the "Layer Style" window. (as if you had double-clicked)
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Bonus extra nitpick: The window opened on mouse-down, not on mouse-up.
Interestingly the layers panel does the correct thing when control is pressed between clicks, but the channels panel does not.
The options windows opening on mouse-down instead of mouse-up has never bothered me, but I believe it goes against convention.
Thanks.

Very detailed report, Jay. I was able to see exactly what you're talking about, and reproduce this using my trackpad. I'm wondering if this is an OS issue, or something that can be tweaked in Photoshop. Even with files in Finder, you can activate a double-click even with a slight hesitation, which is similar to the behavior in Photoshop.

Z8000 mouse click behaviour is not consistent

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@lolotimo
‎Thank you for using HP Support Forum. I have brought your issue to the appropriate team within HP. They will likely request information from you in order to look up your case details or product serial number. Please look for a private message from an identified HP contact. Additionally, keep in mind not to publicly post ( serial numbers and case details).
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Thank you,
Omar
I Work for HP

TreeSelectionListener detect if mouse click

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