当flowLayoutPanel1内容过多时,可以设置竖条,当时当鼠标滚动时,里面的内容不会随着鼠标的滚动而滚动,这就要求我们自己写事件了:
宗旨:判断鼠标是不是在flowLayoutPanel1区域内,如果在,设置flowLayoutPanel1的垂直滚动距离
给winform窗体加一个mousewheel监听事件
核心代码:
private void Form1_MouseWheel(object sender, MouseEventArgs e) { //e.X e.Y以窗体左上角为原点,aPoint为鼠标滚动时的坐标 Point aPoint = new Point(e.X,e.Y); //this.Location.X,this.Location.Y为窗体左上角相对于screen的坐标,得出的结果是鼠标相对于电脑screen的坐标 aPoint.Offset(this.Location.X,this.Location.Y); Rectangle r = new Rectangle(flowLayoutPanel1.Location.X, flowLayoutPanel1.Location.Y, flowLayoutPanel1.Width, flowLayoutPanel1.Height); // MessageBox.Show(flowLayoutPanel1.Width+" "+flowLayoutPanel1.Height); //判断鼠标是不是在flowLayoutPanel1区域内 if (RectangleToScreen(r).Contains(aPoint)) { //设置鼠标滚动幅度的大小 flowLayoutPanel1.AutoScrollPosition = new Point(0,flowLayoutPanel1.VerticalScroll.Value-e.Delta/2); } }
往flowLayoutPannel1里面添加controls
for (int i = 0; i < 100; i++) { Label l = new Label(); l.Text = i.ToString(); flowLayoutPanel1.Controls.Add(l); flowLayoutPanel1.ScrollControlIntoView(l); Application.DoEvents(); }
完!!
时间: 2024-11-03 05:44:25