VC#中从Clipboard保存获取数据的方法(2)
if (iData.GetDataPresent(typeof(MyItem).FullName))
{
// MyItem item = (MyItem)iData.GetData(typeof(MyItem).FullName);
MyItem item = GetFromClipboard();
if (item != null)
{
this.richTextBox1.Text = item.ItemName;
}
}
break;
default:
base.WndProc(ref m);
break;
}
}
private void Form1_Closed(object sender, System.EventArgs e)
{
//从观察链中删除本观察窗口（第一个参数：将要删除的窗口的句柄；第二个参数：观察链中下一个窗口的句柄 ）
ChangeClipboardChain(this.Handle, NextClipHwnd);
//将变动消息WM_CHANGECBCHAIN消息传递到下一个观察链中的窗口
SendMessage(NextClipHwnd, WM_CHANGECBCHAIN, this.Handle, NextClipHwnd);
}
IntPtr NextClipHwnd;
protected static MyItem GetFromClipboard()
{
MyItem item = null;
IDataObject dataObj = Clipboard.GetDataObject();
string format = typeof(MyItem).FullName;
if (dataObj.GetDataPresent(format))
{
item = dataObj.GetData(format) as MyItem;
}
return item;
}
}
[Serializable]
public class MyItem
{
public MyItem()
{
itemName = "This is a Custom Item";
}
public string ItemName
{
get { return itemName; }
}
private string itemName;
public void CopyToClipboard()
{
DataFormats.Format format = DataFormats.GetFormat(typeof(MyItem).FullName);
IDataObject dataObj = new DataObject();
dataObj.SetData(format.Name, false, this);
Clipboard.SetDataObject(dataObj, false);
}
}
}