暑假前的一段时间，老师让做一个基于Socket的监控系统，其中有一项要求是可以分屏同时查看多台C的屏幕画面，由于基础不好，写这个分屏的控件也想了半天，不过总算是弄出来了，嘿嘿…

public partial class PictureControl : UserControl
{
public event MouseEventHandler PicControl_DoubleClick;

private int picNum;
/// <summary>
/// 屏幕个数
/// </summary>
public int PicNum
{
get { return picNum; }
set
{
if (value == 4 || value == 6 || value == 9 || value == 12 || value == 16 || value == 20 || value == 25)//只能

是4、6、9、12、16、20、25
{
picNum = value;
this.SetPictureBox(this.picNum);
}
else
{
this.PicNum = 12;
this.SetPictureBox(this.picNum);
}
}
}

public PictureControl()
{
this.picNum = 4;
InitializeComponent();
this.SetPictureBox(this.picNum);
}

/// <summary>
/// 根据个数布局PictureBox
/// </summary>
/// <param name="num"></param>
private void SetPictureBox(int num)
{
this.Controls.Clear();
Size size = this.Size;
switch (num)
{
case 4: this.SetPictureBox(2, 2, size); break;
case 6: this.SetPictureBox(2, 3, size); break;
case 9: this.SetPictureBox(3, 3, size); break;
case 12: this.SetPictureBox(3, 4, size); break;
case 16: this.SetPictureBox(4, 4, size); break;
case 20: this.SetPictureBox(4, 5, size); break;
case 25: this.SetPictureBox(5, 5, size); break;
}
}

/// <summary>
/// 布局pictureBox
/// </summary>
/// <param name="x">几行</param>
/// <param name="y">几列</param>
/// <param name="size">当前控件的大小</param>
private void SetPictureBox(int x, int y,Size size)
{
int num = 0;
for (int i = 0; i < x; i++)
{
for (int j = 0; j < y; j++)
{
PictureBox pic = new PictureBox();
pic.SizeMode = PictureBoxSizeMode.Zoom;                                         //设置自动缩放
pic.BackColor = Color.White;                                                    //设置背景颜色
pic.Location = new Point((size.Width / y) * j, (size.Height / x) * i);          //设置Location
pic.BorderStyle = BorderStyle.FixedSingle;                                      //设置边框
pic.MouseDoubleClick += new MouseEventHandler(pic_MouseDoubleClick);            //订阅控件双击事件
pic.Size = new Size(size.Width / y, size.Height / x);                           //设置控件大小
pic.Tag = num;                                                                  //设定控件编号即屏幕序号
this.Controls.Add(pic);                                                         //添加
num++;
}
}
}

void pic_MouseDoubleClick(object sender, MouseEventArgs e)
{
if (this.PicControl_DoubleClick != null)
{
this.PicControl_DoubleClick(sender, e);//将动态添加的控件的双击事件 传向控件体外。
}
}

private void PictureControl_SizeChanged(object sender, EventArgs e)
{
this.SetPictureBox(this.picNum);
}

private PictureBox GetPicByIndex(int index)
{
foreach (Control c in this.Controls)
{
if (Convert.ToInt32(c.Tag) == index)
{
return (PictureBox)c;
}
}
PictureBox p = new PictureBox();
p.Tag = -1;
return p;
}

/// <summary>
/// 根据屏幕序号设置图像
/// </summary>
/// <param name="index">屏幕号</param>
/// <param name="img">图像</param>
public void SetImageByIndex(int index, Image img)
{
GetPicByIndex(index).Image = img;
}
}

• 编码一分钟
• 测试十年功