Mouse Dragged Event

[MallardsReach]

I've looked at various articles and examples none of which are working for me. I have a jPanel inside of which is a jlabel. In the MouseDragged event I have the following code.

int x=evt.getX();
int y=evt.getY();
jLabel3.setLocation(x, y);
jLabel3.repaint();

The Label moves but it flickers and sometimes show a copy of it self. Any help in the right direction would be appreciated.

[Lost User]

The problem is that dragging produces many events so your code will be repeatedly moving the label a couple of points, and repainting it. You need to limit the number of repaints somehow. It's a long time since I wrote any GUI code in Java, so I am not sure exactly how this is best achieved. I expect Google will find some samples that help, or even some of the example code found in The Java™ Tutorials[^].

[MallardsReach]

Thanks Richard, It seems like Java is more of a behind the scenes type of language and not really GUI orientated despite the best efforts of netbeans and the like. I guess I'll revert to VB as that does it everything you need for a windows environment even though it is platform dependent.

[Lost User]

Not true. You would face exactly the same issue in VB, C# C++ etc.

[Lost User]

See How to Write a Mouse Listener (The Java™ Tutorials > Creating a GUI With JFC/Swing > Writing Event Listeners)[^]

[MallardsReach]

Thanks Richard I seem to remember it being easier in vb but could be looking through rose coloured specs. I looked at the links you suggested but to no avail mind they are 12yrs old now so maybe not surprising. I will try to use another idea instead. I was trying to get a question with three possible answers and the user had to drag the correct answer in place, so maybe I'll look at seeing if a jTextField can be dragged around. If that fails three radio buttons and they can click the one they think is the right answer. I will stick with Java