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I'm trying to write a UI for an Adobe After Effects script. I want to add a functionality where a user can CTRL click a button instead of just clicking it with no keypresses to get a slightly different behavior.

The problem is, however, I don't to know how to detect if a key was pressed when the button was clicked.

I've managed to detect a keypress with 

myPanel.addEventListener("keydown", function (kd) {alert(kd.keyIdentifier); return(kd.keyIdentifier);});

This piece of code adds a listener that alerts me a name of the button when it is being pressed. I also have a button onClick event to control what happens when a button is pressed. However, I can't figure out how to combine those two listeners and get an information about whether a key was pressed during the button click. I tried to place the keydown listener inside the onClick function, but then it doesn't work at all.

RobC
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Alicja Barankiewicz
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2 Answers2

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I managed to make it work.

The Adobe ScriptUI environment lets you monitor the keyboard status at all times using the Keyboard state object. You can get it from: ScriptUI.environment.keyboardState. It has properties such as altKey, ctrlKey and so on that return a boolean based on whether they key was pressed or not. All you have to do is put the object initiation into the onClick event of the button:

button.onClick = function() {
    isCtrlPressed = ScriptUI.environment.keyboardState.ctrlKey;
}

For more information, I refer to p.155 of the Adobe JavaScript Tools Guide

Alicja Barankiewicz
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<button onclick="sample(event)">Click Me!</button>

function sample(event){
    if (event.ctrlKey){
       alert('Button click with ctrlKey pressing.');
    }else{
       alert('Button click without ctrlKey pressing.');
    }
}

Event object has some key press or not. Check that then use it.

Example

Vasi
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