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Timofei Davydik gave a very good answer, and it helped my work with datatips also However I see in the comments that there was some confusion about how exactly to work with overriding the two massive functions, <code>ChartBase.positionDataTips</code> and <code>ChartBase.positionAllDataTips</code>. A way to do this would be to do the following: <ol> <li>Create a new chart class that extends ChartBase or a child of that.</li> <li>Set the ChartBase style, <code>showDataTipTargets</code>, to false.</li> <li>Create a new Style, <code>showCustomDataTipTargets</code>, on your custom chart class.</li> <li>Override <code>positionDataTips</code> and <code>positionAllDatatips</code></li> </ol> The new overridden functions should look something like this: <pre><code>override protected function positionDataTips():void { this.setStyle("showDataTipTargets", false); // this will do all the normal rendering of the datatips and callout // but it will not draw the dataTipTarget because that is dependent upon // the style, showDataTipTargets super.positionDataTips(); // now here you draw your custom datatip target. // Use the following code as a guide, it is // copied from the ChartBase.positionDataTips /* if (len > 1) { if (calloutStroke) { calloutStroke.apply(g,null,null); if (tipData.isRight) { g.moveTo(chartLocalPts.x, chartLocalPts.y + tipData.height / 2); g.lineTo(tipData.x, chartLocalPts.y + tipData.height / 2); g.lineTo(tipData.x, tipData.y); } else { if(layoutDirection == LayoutDirection.RTL) { g.moveTo(chartLocalPts.x - tipData.width, chartLocalPts.y + tipData.height / 2); } else { g.moveTo(chartLocalPts.x + tipData.width, chartLocalPts.y + tipData.height / 2); } g.lineTo(tipData.x, chartLocalPts.y + tipData.height / 2); g.lineTo(tipData.x, tipData.y); } } } var tipColor:uint = tipData.hd.contextColor; g.lineStyle(1, tipColor, 100); g.moveTo(tipData.x, tipData.y); g.beginFill(0xFFFFFF, 1); g.drawCircle(tipData.x, tipData.y, TOOLTIP_TARGET_RADIUS); g.endFill(); g.beginFill(tipColor, 1); g.drawCircle(tipData.x, tipData.y, TOOLTIP_TARGET_INNER_RADIUS); g.endFill(); */ } </code></pre>
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