The tag has no usage guidance.

learn more… | top users | synonyms

6
votes
2answers
69 views

Abort an EventHandler?

How do I stop an EventHandler? I'm trying to allow the user unlimited inputs on the arrow keys UNTIL certain conditions are met, and then stop the ...
6
votes
1answer
210 views

Throttle EventHandler KeyReleased

What might be the most elegant way to throttle the a,s functions triggered by an ...
25
votes
4answers
1k views

Detecting KeyUp events

Is there a way to detect when a key is released, similar to EventHandler[InputField[], {"KeyDown", "k"} :> Print["k pressed"]] It seems such detection isn't ...
139
votes
1answer
25k views

Mathematica Minecraft

Some time ago I asked myself: with all these great graphics and interactive capabilities of Mathematica, what kinds of 3D games can be implemented in it? And the answer which came to mind is ...
3
votes
1answer
54 views

How to mimic CheckboxBar's Method->“Active” option in a Manipulate's checkbox control?

CheckboxBar has a Method -> "Active" option that allows you to click the label to change the state of a checkbox. I would ...
0
votes
0answers
57 views

How to Use Mouse Events & EventHandler in Demonstrations

One of the primary criteria for an acceptable Demonstration is, of course, that multiple copies of the Manipulate Output Cells [MOCs] have to have independent controls and datasets: the operation of ...
5
votes
1answer
187 views

What is “MouseDragged”?

Bug introduced in V10.1 or earlier and persisting through V10.4 Print is triggered just by pressing the mouse button. ...
0
votes
1answer
74 views

How can I manually pick the data out of the image of a plot?

edit: The automatic way listed here doesn't work for an application like mine in which there are several curves on the same plot that all have the same markers, but you only want one curve (it will ...
6
votes
1answer
74 views

Docked cell showing keystrokes and mouse buttons actions

When I send bug reports to WRI, sometimes I attach a screen video record, like on the following example (that I just sent as an improvement suggestion). As you can see, I use OSD Hotkey, to make sure ...
5
votes
0answers
46 views

Triggering events based on choices made inside of system dialogs (e.g. window close)

I'm trying to arrange for Mathematica to perform a certain action every time a notebook is saved or closed (with or without saving). The obvious way to do this would be through event handling. So, ...
3
votes
2answers
49 views

How to get highlighted text from event

I want to do the following: Given a text in a Mathematica dynamic module "at runtime". If some text is selected with the cursor/mouse, after the mouse button release, get the selected text. Thank ...
5
votes
1answer
54 views

Dynamically highlighting elements sharing common properties

I want to make a table of elements such that when the cursor is over a target element, all other elements of the table sharing some specified common property with the target are highlighted (let's say ...
1
vote
0answers
64 views

How can I perfect this game for Wolfram Demonstration publication? [closed]

When the messages change the window inactivates, and when I try to host an interactive CDF on my site it turns red and says something about numbers having to be scaled or offset. Any help? I'm ...
3
votes
0answers
32 views

EventHandler click event in Graphics[ ] object does not work properly after using Deploy [duplicate]

There is a problem clicking layered Graphics objects after using Deploy. For example, the code below works as intended with the Disk 'on top of' the Line. Click either object anywhere and EventHandler ...
1
vote
1answer
182 views

How to combine manipulate and eventhandler

I combine manipulate and eventhandler, now I can change the controller when working on eventhandler, but how to change the value in eventhandler when I control the manipulate controller? ...
1
vote
1answer
51 views

Using Loop to create mutiple EventHandlers

I have a problem, that is I want to use loop to create multiple EventHandlers, but my code shows nothing. What can I do? ...
3
votes
4answers
257 views

EventHandler Not Detecting KeyDown

I am trying to use EventHandler to detect KeyDown within a LocatorPane. Anytime I press a key inside the LocatorPane the proper action is not executed (doesn't matter which key I choose) but rather ...
3
votes
2answers
137 views

Circumnavigate a curve (part 2)

I got help from Kuba on a previous post regarding this issue I'm having but after integrating that solution into my code, the problem changed and I am left with something I don't know much about (even ...
1
vote
0answers
85 views

Strange behavior of my vertex eventhandler!

I have two level EventHandler. The inner one is made of vertex of Graph and the other outer one is of the Dynamic Graph. (1) If I select a arbitray place on the Graph except a vertex, then every ...
0
votes
1answer
125 views

What is wrong with combining two programs with event handlers?

I can delete the unwanted nodes of a RandomGraph by double-clicking on them from the first program, and I can change the positions of the nodes by dragging them ...
6
votes
1answer
187 views

Different actions with dragging and clicking points in same graphic

On a graphic (in this example a simple plot), I need two points to move when I drag with the mouse, and these points must move to location {1,1} when I click on them. This is how I got it to work, ...
6
votes
2answers
198 views

Why the Mouse dragging response not as smooth as Locator

I am experimenting to use MouseDragged eventhandler to change the vertices positions of a triangle, it works, but not as smooth as using Locators. Is this the ...
5
votes
2answers
159 views

Generating EventHandler using Table

I would like to change the edge color of a graph when double clicking on it, the following code works: ...
0
votes
1answer
193 views

Using variable with delay in WhenEvents in NDSolve

I have a system of differential equations which is solved correctly. However, I want to trigger two events, one of which depends on the "time elapsed" after of the first event trigger. Is it possible ...
3
votes
2answers
157 views

Using MousePosition on the entire screen - Screencast with Linux

In order to record animations more easily while using Mathematica on Linux, I would need to know how to get the position of three clicks. The following picture (main part generated by ...
4
votes
0answers
167 views

Is it possible to model the piano key attack?

My purpose is to model the attack of a piano key. As the key is pressed a sound must be emitted. When the key is released the sound must stop with decreasing volume. I have a partial success when ...
5
votes
2answers
178 views

Capturing an F1

I teach an Intro to Mathematica course, and one of the things I try to reinforce early on is just how helpful Mathematica's help is. In the very first lab for the course, I even give the students a ...
2
votes
1answer
264 views

DynamicModule with Plots and EventHandler

I am making a little animation in Mathematica, along the lines of some of the Wolfram demo projects. I'd like to animate a simulated trajectory of a random process (say a Poisson process), and while ...
4
votes
2answers
505 views

Detecting changes of variables' values

Is it possible to detect (and create a trigger for) an event when any of the variables defined in the notebook changes its value (for any reason)? I need to know which variable got changed and what ...
6
votes
1answer
141 views

How to handle keyboard events for unselected item in CDF?

How can I force the keyboard input to work for this cell without clicking on it after I evaluate or showing a blinking selection cursor? This is for running CDF games in a browser. ...
1
vote
1answer
139 views

Extract Graphics properties using EventHandler

One can find primitives' properties such as the radius, the center or the color of a Disk using Cases by using: ...
5
votes
1answer
201 views

Detect a graphic primitive inside a Graphic

Please excuse me if that question is too basic but I couldn't find anything in the documentation or on here. If you consider the following Graphic I would like to ...
1
vote
1answer
173 views

BindEvent binding own function

I need to change property of window when button gets pressed. There are pretty enough examples on Wolfram's website, but all they bind predefined function "Print[]" and I have no problems with ...
5
votes
1answer
363 views

Evaluation order control

This question is related to Evaluation order of Button[]'s action Concusion was, Button[]'s actions are evaluated in preemptive link so "the code that needs ...
4
votes
2answers
211 views

EventHandler and Refresh rate

Based on the example of the Documentation of MousePosition, Properties and Relations, here is my test code using "MouseDragged" instead of "MouseClicked": ...
-1
votes
2answers
129 views

EventHandler and ActionMenu

Here is the bit of code causing me issues: ...
1
vote
1answer
86 views

InputField Insertion Point Movement

I am trying to make the Return Key move the insertion point to the end of the input field's text. Please see the example below for the problem I am facing. Namely, when the return key is pressed, the ...
7
votes
3answers
1k views

Hovering mouse cursor over a plot to display a “corresponding” point in another plot

(Apologies for not having gotten around to responding to and accepting answers on my other recent questions—as a meticulous and thorough type, I'd like to take my time to fully comprehend and ...
2
votes
1answer
166 views

Delay of events detection dependent of “MouseDown” position

Let's say we have a Rectangle with color which depends of CurrentValue["MouseOver"]: ...
1
vote
1answer
148 views

How to preserve focus on InputField after Print?

If you press Enter in the example below it should become clear that test is being adding to the textbox instead of the current ...
2
votes
1answer
192 views

Change the behaviour of a LocatorPane

Normally, LocatorPane detects any single click as in the following example: ...
2
votes
3answers
341 views

Changing the Actions in EventHandler

I would like to be able to change which action specified events take depending on some condition. For example, I have established a SetterBar ...
3
votes
1answer
170 views

How can I improve my Zooming code?

I recently started to work with the EventHandler function to make it possible to Zoom, Pan, etc, with only the use of a mouse. I have found a way to zoom that is ...
1
vote
0answers
361 views

Is it possible to create an event handler for changes in values of variables? [duplicate]

I am creating a networking application in Mathematica that runs a non-stop simulation, and periodically receives new information from the remote server that affects the simulation. Whenever values ...
3
votes
1answer
239 views

Creating event handler with ImplementJavaInterface inside a package

I am trying to make my Mathematica function to serve as an event handler for the events generated by a Java object. Specifically, I have a Java object that connects as a client to a server that ...
2
votes
1answer
190 views

Detecting change of a variable (detect mouse clicks)

I want to do something when the mouse is clicked. But it shouldn't matter where the mouse is clicked, so I can't use EventHandler. Instead, I'm trying to do it like ...
1
vote
1answer
177 views

Can't see updating performed by NMinimize[…,StepMonitor->(…)] outside of Button in which it's called [duplicate]

I've made a peak-fitting GUI in which I have a "Fit" button that, when pressed, calls NMinimize[...,StepMonitor->(step++)] to minimize a sum of squared ...
10
votes
1answer
321 views

EventHandler not working within DateListPlot (?)

I have some {date, value} data: data = Transpose[{AbsoluteTime /@ Thread[{2012, Range[12], 15}], RandomInteger[10, 12]}] ...