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BOOK: Beginning ActionScript 2.0
This is the forum to discuss the Wrox book Beginning ActionScript 2.0 by Nathan Derksen, Jeff Berg; ISBN: 9780764577680
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Old January 12th, 2007, 02:05 AM
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Default Ch4. Ex 3. Follow your own instructions, hello

The task for Ch.4, ex.3, says to "Modify the convertToButton() function so that it also works with rollover and rollout events." This would mean that new AS should:
a) call the 'testButton' function
AND
b) call a function like 'buttonClickHandler' that would trace the cursor event, ie., rollOver and rollOut, in this case.

Your solution to your own question leaves out the second part altogether. You DID however add a releaseOutside function that was nice touch.

So the correct solution to the original task would be (colors to your liking):

function drawRectangle(targetMC:MovieClip, rectWidth:Number, rectHeight:Number, bgColor:Number):Void {
    targetMC.moveTo(0, 0);
    targetMC.lineStyle(1, 0x000000);
    targetMC.beginFill(bgColor, 100);
    targetMC.lineTo(rectWidth, 0);
    targetMC.lineTo(rectWidth, rectHeight);
    targetMC.lineTo(0, rectHeight);
    targetMC.lineTo(0, 0);
}
function rollOutHandler():Void {
    trace("Button rolled over");
}
function buttonClickHandler():Void {
    trace("Button Pressed");
}
function convertToButton(targetMC:MovieClip, callbackFunction:Function, rollOutFunction):Void {
    drawRectangle(targetMC, 100, 30, 0x333333);
    targetMC.onRollOver = function() {
        this.clear();
        drawRectangle(this, 100, 30, 0x225511);
    };
    targetMC.onPress = function() {
        this.clear();
        drawRectangle(this, 100, 30, 0x3333CC);
    };
    targetMC.onRelease = function() {
        this.clear();
        drawRectangle(this, 100, 30, 0x333399);
        callbackFunction();
    };
    targetMC.onReleaseOutside = function() {
        this.clear();
        drawRectangle(this, 100, 30, 0x333399);
        callbackFunction();
    };
    targetMC.onRollOut = function() {
        this.clear();
        drawRectangle(this, 100, 30, 0x228866);
        rollOutHandler();
    };
}
this.createEmptyMovieClip("testButton", 1);
convertToButton(testButton, buttonClickHandler, rollOutHandler);


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