In a callback, how do I determine which mouse button was pressed to generate the callback?

I would like to determine, in a callback, which mouse button was pressed to generate the callback.

Answer 1

[MathWorks Support Team]

You can determine which mouse event has occurred by examining the 'SelectionType' property of the figure. The property can take the following values:

1. normal: left mouse button

2. extend: right mouse button on a 2-button mouse;

middle mouse button on a 3-button mouse

3. alt: left+right buttons on a 2-button mouse;

 right mouse button on a 3-button mouse

4. open:double mouse click

For example, you can see the values taken by executing the following:

figure;

set(gcf,'WindowButtonDownFcn', 'disp(get(gcf,''SelectionType''));');

Now click in the current figure to see the values displayed.