MATLAB: How to get WindowButtonMotionFcn to track mouse position

MATLABmatlab guitrack mousewindowbutton

Hello everyone,

I'm writing a GUI code in wich I basically need to track the position of the mouse in a UIAxes ,and then draw a veritcal line in this position, where some plot are already existing. I've seen in other questions that a WindowButtonMotionFcn could help me to do that but I'm not able to create it. I've also tried with a get(axes_handle,'CurrentPoint') but the problem comes out when I need to point right over a prevoius line for wich no output is given by the "get" function. Could anyone explain me how to get a WindowButtonMotionFcn or at least give me suggestion on how to track mouse position?

Thank you in advance for your help.

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Here's the question that'll help you, there are more two relevant answers to it. Link

Related Solutions

MATLAB: Show mouse position in another subplot

You can use WindowButtonMotionFcn callback if figure. Run the following example

f = figure();
ax_up = subplot(2, 1, 1);
hold(ax_up);
ax_up.YLim = [0 2];
ax_down = subplot(2, 1, 2);
hold(ax_down);
ax_down.YLim = [0 2];
l = yline(0, 'r');
f.WindowButtonMotionFcn = @(fig, eve) btnCb(fig, eve, ax_up, l);
function btnCb(~, ~, ax_up, l_h)
    y = ax_up.CurrentPoint(1, 2);
    if (ax_up.YLim(1) < y) && (y < ax_up.YLim(2))
        l_h.Value = y;
    end
end

MATLAB: How to add a graphics object callback subfunction to a GUI MATLAB program using GUIDE in MATLAB

Graphics objects can have additional callback routines like ButtonDownFcn, CreateFcn, and DeleteFcn, which are executed with the appropriate user action.

Figures can also have the following callbacks:

CloseRequestFcn

KeyPressFcn

ResizeFcn

WindowButtonDownFcn

WindowButtonMotionFcn

WindowButtonUpFcn

To add a callback subfunction to the MATLAB program:

1. Click the right mouse button while the object is selected to display the Layout Editor context menu

2. Select View Callbacks

3. Select the desired callback from the context menu

GUIDE then adds the subfunction stub to the MATLAB program file for the GUI.

For more information on this, visit the following documentation page on our web site:

 <http://www.mathworks.com/access/helpdesk/help/techdoc/creating_guis/f10-1005070.html#f10-999362>

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Related Solutions

MATLAB: Show mouse position in another subplot

MATLAB: How to add a graphics object callback subfunction to a GUI MATLAB program using GUIDE in MATLAB

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