手写输入方法获取输入信息

namespace writing
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
protected override bool ProcessDialogKey(Keys keyData)
{
if (keyData == (Keys.Insert | Keys.Shift))
{
IDataObject data = Clipboard.GetDataObject();
string text = (string)data.GetData(DataFormats.UnicodeText);
MessageBox.Show(text);
}
return base.ProcessDialogKey(keyData);
}
}
}