Question

我有一个带背景的按钮。我创建了mouseenter＆amp; mouseleave事件。在mouseleave事件中，如果鼠标光标位于2个坐标之外，则会触发mouseleave事件。

private void Button_SpanMouseEnter(object sender, EventArgs e)
    {
        Button x = sender as Button;
        x.Size = new Size(500, 250);
        x.Location = new Point(0, 0);
    }

    private void Button_SpanMouseLeave(object sender, EventArgs e)
    {
        Button x = sender as Button;

        //If cursor is outside of this coordinates(0,0) & (250,125)
        //it will trigger this size
        x.Size = new Size(250,125);
        x.Location = new Point(0, 0);
    }

我的问题是当我离开500X250矩形时，它会触发鼠标离开。我想让它在250X125矩形中触发。

Answer 1

要实现您正在尝试的效果，而不是Button_MouseLeave事件，而您需要使用MouseMove事件。请删除您的Button_SpanMouseLeave事件并添加以下内容：

private void button1_MouseMove(object sender, MouseEventArgs e)
{
    Button x = sender as Button;
    Point p = PointToClient(System.Windows.Forms.Control.MousePosition);
    if (p.X > 250|| p.Y >125)
    {
        button1.Size = new Size(250, 125);
        button1.Location = new Point(0, 0);
    }
}

修改

事实上，您根本不需要PointToClient方法。所以代码就像这样：

private void button1_MouseMove(object sender, MouseEventArgs e) { Button x = sender as Button; if (e.X > 250|| e.Y >125) { x.Size = new Size(250, 125); x.Location = new Point(0, 0); } }

修改2

好的，如果该按钮不在0,0，那么最好像这样使用PointToClient：

private void button1_MouseMove(object sender, MouseEventArgs e) { Button x = sender as Button; Point p = PointToClient(System.Windows.Forms.Control.MousePosition); this.label1.Text = p.X.ToString() + " " + p.Y.ToString(); if (p.X > x.Location.X + 250 || p.Y > x.Location.Y+125) { button1.Size = new Size(250, 125); } }

我有一个带背景图片的按钮。如何在一定条件下触发mouseleave事件？

1 个答案: