自定义Spread中快捷键行为

Spread中本身内置了很多快捷键操作，不过有时候我们也需要实现一些自定义的快捷键行为，在Spread中只需继承FarPoint.Win.Spread.Action就可以实现自定义的快捷键。

本文简单介绍如何实现自定义的Delete键快捷行为，我们实现的功能是按下Delete时，只清空单元格的Value，不清空单元格的样式设置，如果单元格处于锁定状态不进行清空操作，代码实现如下：
    public class ClearValueAction : FarPoint.Win.Spread.Action
    {
        public override void PerformAction(object source)
        {
            if (source is SpreadView)
            {
                SpreadView spread = (SpreadView)source;
                SheetView sheet = spread.Sheets[spread.ActiveSheetIndex];
                CellRange cr = sheet.GetSelection(0);
                StyleInfo si = new StyleInfo();

                for (int r = 0; r < cr.RowCount; r++)
                {
                    for (int c = 0; c < cr.ColumnCount; c++)
                    {
                        sheet.Models.Style.GetCompositeInfo(cr.Row + r, cr.Column + c, -1, si);
                        if (!si.Locked)
                        {
                            sheet.Cells[cr.Row + r, cr.Column + c].ResetValue();
                        }
                    }
                }
            }
        }
    }

给Spread添加自定义的快捷键：
    private void Form1_Load(object sender, EventArgs e)
    {
        InputMap im = fpSpread1.GetInputMap(InputMapMode.WhenFocused);
        ActionMap am = fpSpread1.GetActionMap();
        im.Put(new Keystroke(Keys.Delete, Keys.None), "ClearValue");
        am.Put("ClearValue", new ClearValueAction());
    }