If the uicontrol's Enable property is set to inactive or off, the ButtonDownFcn executes when you click the right or left mouse button in the 5-pixel border or on the control itself. Each element in the array represents a separate line of text. WindowButtonMotionFcn End user moves the pointer within the figure window. This uicontrol command creates a push button and specifies the Callback property to be a cell array. This callback executes when the user clicks the button in the app. WindowButtonUpFcn End user releases a mouse button. Button visibility, specified as 'on' or 'off'.
Note how Matlab automatically converted the Java event testEvent, declared in interface MyTestListener, into a Matlab callback TestEventCallback the first character is always capitalized. This behavior helps you to find problems in your code before the user encounters them. If you can access an object, you can set and get its properties, and pass it to any function that operates on objects. For a full list of properties and descriptions for each type, see the associated property page. If I can detect the button has been pressed, then I can halt the running loop. Therefore, I don't see any practical distinction between KeyPressFcn and WindowKeyPressFcn other than that the former, by implication of its name lacking the term Window, might also take effect when no figures are active, such as when operating in the command window though this conjecture is in disagreement with the callbacks definition, which explicitly invokes the presence of a figure window.
WindowScrollWheelFcn End user turns the mouse wheel while the pointer is on the figure. Name is the argument name and Value is the corresponding value. Setting this property makes your app respond when the user interacts with the uicontrol. Otherwise, use the function to access the object. Element Description left Distance from the inner left edge of the parent container to the outer left edge of the button bottom Distance from the inner bottom edge of the parent container to the outer bottom edge of the button width Distance between the right and left outer edges of the button height Distance between the top and bottom outer edges of the button The Position values are relative to the drawable area of the parent container. Activated means different things for different uicontols - for a pushbutton it means that the pushbutton is pushed, for a checkbox it means that the checkbox is selected or deselected, for an editbox it means that the text contents are modified The ButtonDownFcn callback should fire when you press the mouse button down over the uicontrol, whether or not you release the mouse button, and whether or not your action eventually activates the uicontrol.
OnCallback Executes when the State of a toggle tool changes to 'on'. I tried playing around with the push button and the toggle button widgets, and while I could get the callback to fire a second time, it had no real impact on the first callback which is still going because of the while or for loop. Mouseover text to see original. I have a variable cell array created in base workspace in matlab. This is useful for implementing actions to interactively modify control object properties, such as size and position, when they are clicked on using selectmoveresize, for example. If it had both, and you fully clicked and released on the pushbutton to activate it, the ButtonDownFcn should fire first, as it fires on the down-click, which is before the activation.
If the Callback property has no specified value, then nothing happens when the user interacts with the uicontrol. If you accidentally click on a child object, the child will intercept the action and the axes ButtonDownFcn will not be invoked. Source returns the Button object. The tooltip displays even when the component is disabled. . If you specify this property as a function handle or cell array, you can access the object that is being created using the first argument of the callback function. If interruption is not permitted, then the BusyAction property of the object owning the interrupting callback determines if it is discarded or put in the queue.
For example, the object returned by the or command might change when another callback executes. The Interruptible property of the object owning the running callback determines if interruption is allowed. If the Callback property has no specified value, then nothing happens when the user interacts with the uicontrol. If you hover over the pushbutton, click and hold the mouse, move away from the pushbutton, and then release, the Callback callback should not be fired, as the pushbutton was not activated. Typically, you do this when you define the component, but you can change callback property values anywhere in your code. Callback functions require having at least 2 inputs - object and event.
When the callback function is called Matlab passes 2 additional input variables, so your function needs to have 3 input variable. All measurements are in pixel units. The Callback callback should fire when the uicontrol is activated. WindowScrollWheelFcn End user turns the mouse wheel while the pointer is on the figure. For example, a uicontrol has a property called Callback.
Subsequent elements in the cell array are the arguments to pass to the callback function. We can interrupt the first callback if in its loop there is call to one of drawnow, figure, getframe, pause, or waitfor see for details. Setting the CreateFcn property on an existing component has no effect. For example, a uicontrol has a property called Callback. As you suggest in your question the difference is in focus. I am struggling to understand how to set up callbacks for mouse actions on a displayed image. The function you specify must define the same two input arguments as described in.
This anonymous function has four input arguments. The Visible property determines whether the button is displayed on the screen. The second argument provides event data to the callback function. I'm still looking for a solution to this problem. You can specify several name and value pair arguments in any order as Name1,Value1,.