Disable Command Line During Point Selection

I'm trying to use datacursormode to select a two points on a 3D plot. The point selection is working just fine. However, I'm using 'pause' to wait for the user to click a point. The problem is that 'pause' requires you to press a key to continue. This is activating my command window, switching me from my program GUI to view the code, and I have to switch back to my GUI before I can click the next point.

Is there either a way to disable the command window so that "pressing a key to continue" does not enter a command; or an alternative to 'pause' that continues upon the mouse being clicked?

I'm using R2014a on Windows 7.

Some relevant code:

dcm_obj = datacursormode(handles.mainfig);
set(dcm_obj, 'Enable', 'on', 'SnapToDataVertex', 'off');
pause
f = getCursorInfo(dcm_obj);
selpt1 = f.Position;

Thanks!

EDIT: I adapted my own solution from Geoff's suggestion:

f1 = struct;
dcm_obj1 = datacursormode(handles.mainfig);
set(dcm_obj1, 'Enable', 'on', 'SnapToDataVertex', 'off');
f1 = getCursorInfo(dcm_obj1);
while isempty(f1) || isempty(fieldnames(f1))
    pause(0.01);
    f1 = getCursorInfo(dcm_obj1);
end
selpt1 = f1.Position;
datacursormode off;

f2 = struct;
dcm_obj2 = datacursormode(handles.mainfig);
set(dcm_obj2, 'Enable', 'on', 'SnapToDataVertex', 'off');
f2 = getCursorInfo(dcm_obj2);
while isequal(f1, f2)
    pause(0.01);
    f2 = getCursorInfo(dcm_obj2);
end
selpt2 = f2.Position;
datacursormode off;

This allows two independent points to be selected and used.

Answer 1

[Geoff Hayes]

An alternative to pause may be to use a form of polling as described at http://undocumentedmatlab.com/blog/waiting-for-asynchronous-events. Something like

 dcm_obj = datacursormode(handles.mainfig);
 set(dcm_obj, 'Enable', 'on', 'SnapToDataVertex', 'off');

 delay = 0.01;  % 10 milliseconds

 % until a point is selected, f will be empty
 f = getCursorInfo(dcm_obj);
 while isempty(f)
    pause(delay);
    f = getCursorInfo(dcm_obj);
 end

 selpt1 = f.Position;

Try the above and see what happens!

Answer 2

[Namita Vishnubhotla]

Use the "uiwait" command instead of pause. You can find the documentation for uiwait here.

You can then use the "WindowButtonDownFcn" property of the figure to assign a callback, where you can handle the data collection and also call uiresume ( documentation link ).

For example:

function foo
    f = figure;
    set(f,'WindowButtonDownFcn',@(~,~) myFun);
    uiwait
    disp('Done waiting')
end

function myFun
    % data collection
    disp('myFun');
    uiresume;
end

Follow the link below to the documentation page on Function Handle Callbacks:

http://www.mathworks.com/help/matlab/creating_plots/function-handle-callbacks.html