How to Add Each Click on Count Result Screen

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Murat Kocaman 2018-9-7

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https://ww2.mathworks.cn/matlabcentral/answers/417984-how-to-add-each-click-on-count-result-screen

编辑： Murat Kocaman 2018-9-10

采纳的回答： Walter Roberson

在 MATLAB Online 中打开

Hi,

I would like to add extra mouse clicks to my count result screen. The related part of the code is:

Num = numel(s);
message= sprintf(' %i Seeds',Num);
h=msgbox(message);

What I have as a screen is:

I would like to add each mouse clicks to the count result screen. Clicking on image one time "152 Seeds" will be "153 Seeds". Two clicks 154 Seeds etc. and goes on. I have also reached to the manual click counter but it provides output on command line of matlab.

How could I add each click to the count result screen?

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Answer 1

Walter Roberson 2018-9-7

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msgbox returns a figure object. It would be possible to find the handle of the text string and update the String property of it. If you are doing a lot of updating then that would probably be best.

However, the easier way is to provide a title when you create the msgbox, and then each time you want to update the count, call msgbox again making sure that you provide the same title. The code will reuse the figure instead of creating a new figure in this case. It still involves more overhead than would be the case for updating the String property of the appropriate object, but it is easier to program.

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Murat Kocaman 2018-9-7

编辑：Murat Kocaman 2018-9-7

在 MATLAB Online 中打开

count = numel(s);
message = sprintf('Click uncountables\nHit return when done.');
title(message, 'FontSize', 20);
button = questdlg(message, 'Continue?', 'OK', 'Cancel', 'OK');
drawnow;  % Refresh screen to get rid of dialog box remnants.
if strcmpi(button, 'Cancel')
  return;
end
while count < 1000 % or whatever failsafe you want.
  % User clicks one point.  If user types Enter/Return, x is empty.
  [x,y] = ginput(1);
  if isempty(x)
    break;
  end
  % Put a cross over the point.
  plot(x, y, 'x', 'MarkerSize', 24, 'LineWidth', 3);
  % Increment the count.
  count = count + 1
  % Save coordinates (if desired).
  allX(count) = x;
  allY(count) = y;
end
Num1 = numel(s);
message= sprintf(' %i Stones',Num1);
title('Labelling','FontSize',fontSize)
h=msgbox(message, 'Count Result');
Num2 = numel(count);
message = sprintf('%i Stones', (Num1+Num2));
h = msgbox(message, 'Count Result');

With this code I could do what I needed. The result is ok but the image is broken at the manual counting step and sometimes extra counts is not added on message box but it is ok at the command line.

I wonder why this error occurs sometimes not all the time_ Do you have any idea?

Murat Kocaman 2018-9-10

My problem has been solved thank you fcor your supports.

Murat Kocaman 2018-9-10

编辑：Murat Kocaman 2018-9-10

在 MATLAB Online 中打开

I used below part of the code:

    message = sprintf('Click Extra Counts\nHit return when done.');
    title(message, 'FontSize', 20);
    button = questdlg(message, 'Continue?', 'OK', 'Cancel', 'OK');
    drawnow;  % Refresh screen to get rid of dialog box remnants.
    if strcmpi(button, 'Cancel')
      return;
    end
    while count < 1000 % or whatever failsafe you want.
      % User clicks one point.  If user types Enter/Return, x is empty.
      [x,y] = ginput(1);
      if isempty(x)
        break;
      end
      % Put a cross over the point.
      plot(x, y, 'o', 'MarkerSize', 24, 'LineWidth', 3);
      % down the count.
      count = count - 1
      % Save coordinates (if desired).
      allX(count) = x;
      allY(count) = y;
    end
    Num1 = numel(s);
    hold on;
    Num2 = count;
    message = sprintf('%i Stones', Num2);
    h = msgbox(message, 'Count Result');
    hold on;

Could you explain this part below?

txt = h.Children(2).Children(1);
txt.String = message;

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How to Add Each Click on Count Result Screen

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