有这样一个需求，左右各一个表格，要求拖动其中任意一个表格中的滚动条，另外一个都随之滚动，看起来就像是在一个表格中。

本文链接：https://blog.youkuaiyun.com/hualanlan/article/details/6658057

本文详细介绍了如何在两个TableViewer中实现滚动条联动，确保左边表与右边表的选择一致，包括设置滚动条同步、选择高亮效果及在Windows系统上的选择背景绘制。同时，实现了左右两边垂直滚动条的同步滚动，保证了用户体验的一致性。

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/** *//**
* 设置左边(右边)表格的滚动条根据右边(左边)滚动条滚动而滚动
*/
// Make selection the same in both tables
tParameterAlarm1.addListener(SWT.Selection, new Listener() ...{
public void handleEvent(Event event) ...{
tParameterAlarm2.setSelection(tParameterAlarm1.getSelectionIndices());
}
});
// On Windows, the selection is gray if the table does not have focus.
// To make both tables appear in focus, draw teh selection background
// here.
// This part only works on version 3.2 or later.
Listener eraseListener = new Listener() ...{
public void handleEvent(Event event) ...{
if ((event.detail & SWT.SELECTED) != 0) ...{
GC gc = event.gc;
Rectangle rect = event.getBounds();
gc.setForeground(container.getDisplay().getSystemColor(
SWT.COLOR_LIST_SELECTION_TEXT));
gc.setBackground(container.getDisplay().getSystemColor(
SWT.COLOR_LIST_SELECTION));
gc.fillRectangle(rect);
event.detail &= ~SWT.SELECTED;
}
}
};
tParameterAlarm1.addListener(SWT.EraseItem, eraseListener);
// Make vertical scrollbars scroll together
ScrollBar vBarLeft = tParameterAlarm1.getVerticalBar();
vBarLeft.addListener(SWT.Selection, new Listener() ...{
public void handleEvent(Event event) ...{
tParameterAlarm2.setTopIndex(tParameterAlarm1.getTopIndex());
}
});
tParameterAlarm2.addListener(SWT.Selection, new Listener() ...{
public void handleEvent(Event event) ...{
tParameterAlarm1.setSelection(tParameterAlarm2.getSelectionIndices());
}
});
tParameterAlarm2.addListener(SWT.EraseItem, eraseListener);
ScrollBar vBarRight = tParameterAlarm2.getVerticalBar();
vBarRight.addListener(SWT.Selection, new Listener() ...{
public void handleEvent(Event event) ...{
tParameterAlarm1.setTopIndex(tParameterAlarm2.getTopIndex());
}
});

其中tParameterAlarm1为左边表格的TableViewer，tParameterAlarm2为右边表格的TableViewer