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Thread: MouseDraged

  1. #1
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    Default MouseDraged

    why does this code execute multiple time when I start dragging the text. shouldn't it wait until I release the mouse key and then get the selected text? another problem is that it executes first time with "query=null" and then gets the text .
    public class linkListener implements MouseMotionListener{
    public void mouseDragged(MouseEvent arg0) {
     
    		//Handle text selection action.
    		query = note.getSelectedText();
     
    		System.out.println(query);
    		try {
    			displayItems();
    		} catch (IOException e) {
    			// TODO Auto-generated catch block
    			e.printStackTrace();
    		}
    	}
    Last edited by nasi; April 3rd, 2010 at 11:50 PM. Reason: please use [code] tags

  2. #2
    Super Moderator helloworld922's Avatar
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    Default Re: MouseDraged

    See MouseMotionListener Interface: mouseDragged.

    If you want an event only to be sent when the mouse is pressed/released, see MouseListener Interface.

    The mousePressed() method is called whenever the mouse is pressed, then you can check for when the mouse was released using the mouseReleased() method.

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    Default Re: MouseDraged

    I want the event to be sent after highlighting a text with mouse. (pressing the mouse, kepping it pressed, moving it, releasing) isn't it a mousedragged method?

  4. #4
    Super Moderator helloworld922's Avatar
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    Default Re: MouseDraged

    Mouse dragged means exactly that:

    Every time the mouse is dragged (moved with a button pressed), send an event. What you described is to only send events to your program when the mouse is pressed/released. For all your program could care, the mouse could have magically changed places after the mouse was pressed and then released and the same actions will still happen.

  5. #5
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    Default Re: MouseDraged

    what I undrestand, is that when ever mouse is dragged the "mouseDragged(MouseEvent arg0)" method is called and only in that situation it should execute the method body which is

    query = note.getSelectedText();
     displayItems();

    which should get the highlighted text and call diplayItems.isn't it?

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