Arcengine9.2+java鼠标滚轮缩放实现

Arcengine9.2已经实现了自己的鼠标滚轮滑动，但是有个问题就是在鼠标点击其他功能之后滚轮缩放就无效了，所以干脆就setAutoMouseWheel(false)把mapbean的滚轮缩放给禁了，自己写了个。

mapBean.addMouseWheelListener(new MouseWheelListener() {@Overridepublic void mouseWheelMoved(MouseWheelEvent theEvent) {try {IEnvelope envelope = mapBean.getExtent();IPoint centerPoint = new Point();centerPoint.putCoords((envelope.getXMax()+envelope.getXMin())/2,(envelope.getYMax()+envelope.getYMin())/2);if(theEvent.getWheelRotation() == 1){envelope.expand(0.5, 0.5, true);} else {envelope.expand(2, 2, true);}envelope.centerAt(centerPoint);mapBean.setExtent(envelope);} catch (AutomationException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}}});}

代码嵌在mapbean的监听类里

——记录备忘