public Form1()
{
InitializeComponent();
this.KeyPreview = true;
}
private void Form1_KeyPress(object sender, KeyPressEventArgs e)
{
if (e.KeyChar == (char)Keys.Add)
{
var old = button1.Font.Size;
float fontsize = old + 1;
this.button1.Font = new Font("宋体", fontsize);
}
}
