mouse button click

Hello, is it somehow possible to distinguish which mouse button was pressed, left or right?

Thank you

Answer 1

[Matt Tearle]

The figure has a property 'SelectionType'. This will have the value 'normal' for a left-click, and 'alt' for a right-click.

For more, see the doc: MATLAB -> User's Guide -> HG Property Browser -> Figure -> SelectionType

Example:

function mybttnfcn(h,~)
hf = get(h,'parent');
b = get(hf,'selectiontype');
xy = get(gca,'CurrentPoint');
if strcmpi(b,'normal')
    text(xy(1,1),xy(1,2),'Left click')
elseif strcmpi(b,'alt')
    text(xy(1,1),xy(1,2),'Right click')
else
    text(xy(1,1),xy(1,2),'Careful there, crazy man!')
end

Then try something like:

figure
plot(rand(5))
set(gca,'buttondownfcn',@mybttnfcn)

[tomas]

Thank you, that's what I need.

[roudan]

wow, Matt Tearle, that is really helpful to me. I google it and find your post. Thanks

But I like to change 2D line plot to be 2D point plot and assign a value for each individual point, then extract the value for each point when clicking on the point, how to do that? I don't want to extract XY value. Thanks, I appreciate your help.

Answer 2

[Sean de Wolski]

Yes. Look at the third output of ginput

doc ginput

[tomas]

Thanks for your answer. I forgot to write that I need to do it in GUI and don't want to use crosshairs. It should be interactive. Is it possible to do it by using buttondownfcn? I want my gui does something after pressing left button and something else after pressing right button.

Answer 3

[Conny Fru]

Cheers Matt.