Is it possible to display a context menu without right click?

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Mariale 2016-1-26

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回答： Dwight Bartholomew 2016-11-3

In the case that this is no possible, how can I display a menu similar to the uicontextMenu when the user makes a left click on a Figure. 'uimenu' doesn't work because I don't want a bar menu. I just want to display a menu when the user left clicks on a specific place on the figure. Thanks

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Answer 1

Dwight Bartholomew 2016-11-3

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I had the same issue with a table. Solution was a Java robot. If hTable is the handle for the table then I set up a context menu, for example,

      cmenu=uicontextmenu;
          uimenu(cmenu,'label','Context Menu #1');
          uimenu(cmenu,'Label','Context Menu #2');
          uimenu(cmenu,'Label','Context Menu #3');

and assign it to the table with set(hTable,'uicontextmenu',cmenu);

I also have a callback when a cell of the table is selected set(hTable,'CellSelectionCallback',@SelectCell);

Within the SelectCell function, I use a Java Robot to simulate a right-click which initiates the context menu. NOTE - I had to put a 0.2 second pause between "press" and "release" and for anything shorter than 0.2 seconds the system either didn't see the click or was intermittent is seeing the click.

    % Simulate a right-click with the mouse
    import java.awt.*;
    import java.awt.event.*;
    mouse = Robot;
    mouse.mousePress(InputEvent.BUTTON3_DOWN_MASK);
    pause(0.2);
    mouse.mouseRelease(InputEvent.BUTTON3_DOWN_MASK);