private void Form1_Load(object sender, EventArgs e)
{
this.MouseWheel += new MouseEventHandler(Form1_MouseWheel);
}
void Form1_MouseWheel(object sender, MouseEventArgs e)
{
if (e.Delta > 0)
{
this.Text = "正在向上滚动滑轮";
}
else
{
this.Text = "正在向下滚动滑轮";
}
}
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