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Adding the drag-scrolbar and nessary trigger. Step 7 : Now it's time for the dragable scrollbar. Create a button which will function
as the draggable button. Name it scroll drag button. Because the button
should be dragged in a straight line of a certain distance, we'll create a container
Movie Clip for the button. Make a new Movie Clip and call it scroll drag
mc. Place the scroll drag button in frame one of its existing (and
only) layer1 exactly with it's center point at x=0 and y=0 so that it won't
shift some pixels the moment it's dragged. To make the button in this Movie Clip draggable we need to add some action to this button. Remember that in the beginning we added a variable balkheight in frame 4 of layer actions in Movie Clip window? Besides using this variable later to calculate/set the position of the drag button, we are going to use it to set the dragable distance of the button. Add the following action to the button: on (press) {
startDrag ("", false, 0, 0, 0, _parent._parent.balkheight);
_parent.gotoAndPlay(2);
}
on (release, releaseOutside) {
stopDrag ();
_parent.gotoAndStop(1);
}
By leaving the target blank, the whole Movie Clip in which this button is placed, will be dragable. It is contained however between position 0,0 and 0,80 since balkheight was set at 80. On Release or Release Outside, the dragging will stop. We are not (!) going to place Movie Clip scroll drag mc directly in Movie Clip textMC. Why not? Well, because we are going to create a container movieclip to make some things easier. First, by placing scroll drag mc into a container Movie Clip, the position will be relative to that Movie Clip so that it will be more flexible to position in Movie Clip textMC. Also, by placing it in a container Movie Clip, we can use actionscript to create more easily the movement of the dragable scroll button once the arrow buttons / scrollUp or scrollDown buttons are hold down.
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