如何定位ContextMenuStrip [英] How to position ContextMenuStrip

问题描述

我似乎无法弄清楚如何将我的ContextMenuStrip放在dataGridViewCell下面。当我单击dataGridViewComboBoxCell时，我希望我的ContextMenuStrip显示在单元格的正下方。这就是我到目前为止所做的：

I can''t seem to figure out how to position my ContextMenuStrip below my dataGridViewCell. When I click the dataGridViewComboBoxCell I want my ContextMenuStrip to show right below the cell. Here''s what I''ve done so far:

class MyDropDownList : DataGridViewComboBoxCell
{
   ContextMenuStrip dropDownList;

   public MyDropDownList()
   {
       dropDownList = new ContextMenuStrip();
       dropDownList.Items.Add("Hello World");
       dropDownList.Items.Add("Goodbye");
       dropDownList.Items.Add("Random stuff...");
   }

   protected override void OnMouseClick(DataGridViewCellMouseEventArgs e)
   {
       // ContextMenuStrip shows where the mouse
       // was clicked within the cell area...
       // I want the ContextMenuStrip to show 
       // right below the cell and to be aligned 
       // properly with the cell.

       dropDownList.Show(Cursor.Position.X, Cursor.Position.Y);

       // This wasn''t even close!
       // dropDownList.Show(base.DataGridView.PointToScreen(e.Location));
   }
}

所以基本上我希望ContextMenuStrip是行为是我的

DropDownList for dataGridViewComboBoxCell

So basically I want the ContextMenuStrip to is act is my
DropDownList for the dataGridViewComboBoxCell

推荐答案

protected override void OnMouseClick(DataGridViewCellMouseEventArgs e)
        {
            Rectangle rect = DataGridView.GetCellDisplayRectangle(e.ColumnIndex, e.RowIndex, false);
            dropDownList.Show(DataGridView.PointToScreen(new Point(rect.Left, rect.Bottom)));
        }

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