Engine中怎么实现先居中显示要素再闪烁

【解决办法】：
需要在要素居中显示之后、闪烁之前执行IScreenDisplay.UpdateWindow强制全刷，如：

//居中显示要素IActiveView actView = axMapControl1.ActiveView; IEnvelope envelpe = actView.Extent; envelpe.CenterAt(pt); actView.Extent = envelpe; actView.Refresh(); //加入强制刷新，保证刷完后再执行其他语句 actView.ScreenDisplay.UpdateWindow(); //调用闪烁代码IRgbColor rgbColor = new RgbColorClass(); rgbColor.RGB = 255; FlashGeometry(pt, rgbColor, actView.ScreenDisplay, 500);