How can I make a push button respond to clicking with the right mouse button?

I have created a push button in my GUI. I would like to have some action occur when I right-click on the push button.

Answer 1

[MathWorks Support Team]

There are two properties which can be used in conjunction to accomplish this.

One is the button's 'ButtonDownFcn' callback function. This callback function executes when pressing a mouse button on or near a UICONTROL object -- including when pressing the right mouse button.

The other property is the figure's 'SelectionType' property. This property indicates which kind of click was registered in the figure window -- including clicks on controls within the figure.

Putting these two together, you can define a 'ButtonDownFcn' callback for a push button which checks the figure's 'SelectionType' property to detect a right-click. An example is shown below. (In that example, the ANCESTOR function is used to get the figure's handle. If this is being done in a GUIDE-created GUI, this is unnecessary as the 'handles' structure already provides access to the figure's handle.)

function test

      uicontrol('Style', 'pushbutton', ...

                'ButtonDownFcn', @myCallback);

end

function myCallback(src, evt)

      figHandle = ancestor(src, 'figure');

      clickType = get(figHandle, 'SelectionType');

      if strcmp(clickType, 'alt')

          disp('right click action goes here!');

      end

end