在 TeeChart 中使用鼠标滚轮滚动图表 [英] Scroll chart with mouse wheel in TeeChart

问题描述

滚动图表的默认方式是按住鼠标右键拖动鼠标.我需要用鼠标滚轮滚动.我还没有找到任何 API 来启用/禁用鼠标滚轮滚动.

Default way to scroll chart is to drag mouse holding right button. I need to scroll with mouse wheel. I haven't found any API to enable/disable mouse wheel scrolling.

我还尝试将 MouseWheelListener 添加到图表本身，但它从未被调用.

I also tried to add MouseWheelListener to the chart itself, but it never gets called.

是否可以在 TeeChart 库中使用鼠标滚轮?

Is it possible to use mouse wheel in TeeChart lib?

我的应用程序是使用 SWT 的 Eclipse RCP.

My application is Eclipse RCP using SWT.

推荐答案

以下代码对我来说在 Eclipse 中使用 TeeChart Java SWT 很好:

The following code works fine for me with TeeChart Java SWT in Eclipse:

Bar bar1 = new Bar(tChart1.getChart());
bar1.fillSampleValues();

tChart1.addMouseWheelListener(new MouseWheelListener() {

    @Override
    public void mouseScrolled(MouseEvent arg0) {
        Axis tmpA = tChart1.getAxes().getLeft();
        double tmpInc = tmpA.getRange()/10;
        if (arg0.count>0)
            tmpA.setMinMax(tmpA.getMinimum()+tmpInc, tmpA.getMaximum()+tmpInc);
        else
            tmpA.setMinMax(tmpA.getMinimum()-tmpInc, tmpA.getMaximum()-tmpInc);
    }
});

这篇关于在 TeeChart 中使用鼠标滚轮滚动图表的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！