MATLAB: How detect the mouse PRESS of a pushbutton

guimousepresspushbuttonrelease

Hi,

I am currently working on a GUI and I need to detect the left mouse press (and release) of a pushbutton. Then I associate a callback for each event detected. For example: I Want to set a variable to 1 at the mouse press and to 0 at the mouse release.

I have allready explore: – UIcontrol 'Callback' property but it is active at the release mouse click.

– UIcontrol 'ButtonDownFcn' property which is active at the mouse press click but only with right mouse button or on 5-pixel border around the uicontrol).

– On the file exchange a function which allow to put Java's properties on uicontrol but it's very time consuming (1 minute for launching my GUI).

I want the two figure's properties 'WindowButtonDownFcn','WindowButtonUpFcn' but for a uicontrol (pushbutton).

If you execute the code below you can see at the mouse press, 'press' displaying in the console window and at the mouse release you can see 'release' in the console.

figure('WindowButtonDownFcn',@(obj,evt)disp('press'),...
       'WindowButtonUpFcn',@(obj,evt)disp('release'));

I'm writting because I have no other idea to do this… So if anyone knows a way to help me, I would be very grateful!!

Best Answer

I find answer to my question using Java command which is recognized by matlab.

Related Solutions

MATLAB: How to make a push button respond to clicking with the right mouse button

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

MATLAB: In a callback, how to determine which mouse button was pressed to generate the callback

You can determine which mouse event has occurred by examining the 'SelectionType' property of the figure. The property can take the following values:

1. normal: left mouse button

2. extend: right mouse button on a 2-button mouse;

middle mouse button on a 3-button mouse

3. alt: left+right buttons on a 2-button mouse;

 right mouse button on a 3-button mouse

4. open:double mouse click

For example, you can see the values taken by executing the following:

figure;
set(gcf,'WindowButtonDownFcn', 'disp(get(gcf,''SelectionType''));');

Now click in the current figure to see the values displayed.

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