因为业务需要，百度了个可移动可改变大小的控件，然后自己修改了下，功能类似vs的设计面板中的功能差不多，可拖拽，改变大小
拖动的
public class MoveControl
{
#region 自定义事件
/// <summary>
/// 控件移动时触发事件
/// </summary>
public event EventHandler ControlMoving;
/// <summary>
/// 控件移动完成触发事件
/// </summary>
public event EventHandler ControlMoved;
/// <summary>
/// 控件改变大小时触发事件
/// </summary>
public event EventHandler ControlResizing;
/// <summary>
/// 控件改变大小完成触发事件
/// </summary>
public event EventHandler ControlResized;
/// <summary>
/// 选中控件时发生
/// </summary>
public event EventHandler ControlSelected;
#endregion
/// <summary>
/// 是否可调整尺寸
/// </summary>
bool m_blnResize = true;
MoveControlType m_moveType;
#region Constructors
/// <summary>
/// 功能描述:构造函数
/// 作 者:beck.huang
/// 创建日期:2018-07-07 09:20:41
/// 任务编号:中餐
/// </summary>
/// <param name="ctrl">ctrl</param>
/// <param name="blnResize">是否可调整尺寸</param>
/// <param name="moveType">移动模式</param>
public MoveControl(Control ctrl, bool blnResize = true, MoveControlType moveType = MoveControlType.ANY)
{
m_blnResize = blnResize;
m_moveType = moveType;
currentControl = ctrl;
AddEvents();
}
#endregion #region Fields
private Control currentControl; //传入的控件
private Point pPoint; //上个鼠标坐标
private Point cPoint; //当前鼠标坐标
FrameControl fc;//边框控件
#endregion #region Properties #endregion #region Methods
/// <summary>
/// 挂载事件
/// </summary>
private void AddEvents()
{
currentControl.MouseClick -= new MouseEventHandler(MouseClick);
currentControl.MouseClick += new MouseEventHandler(MouseClick);
currentControl.MouseDown -= new MouseEventHandler(MouseDown);
currentControl.MouseDown += new MouseEventHandler(MouseDown);
currentControl.MouseMove -= new MouseEventHandler(MouseMove);
currentControl.MouseMove += new MouseEventHandler(MouseMove);
currentControl.MouseUp -= new MouseEventHandler(MouseUp);
currentControl.MouseUp += new MouseEventHandler(MouseUp);
} /// <summary>
/// 绘制拖拉时的黑色边框
/// </summary>
public static void DrawDragBound(Control ctrl)
{
ctrl.Refresh();
Graphics g = ctrl.CreateGraphics();
int width = ctrl.Width;
int height = ctrl.Height;
Point[] ps = new Point[]{new Point(,),new Point(width -,),
new Point(width -,height -),new Point(,height-),new Point(,)};
g.DrawLines(new Pen(Color.Black), ps);
} #endregion #region Events
/// <summary>
/// 鼠标单击事件：用来显示边框
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void MouseClick(object sender, MouseEventArgs e)
{
if (m_blnResize)
{
this.currentControl.Parent.Refresh();//刷新父容器，清除掉其他控件的边框
for (int i = currentControl.Parent.Controls.Count-; i >=; i--)
{
Control item = currentControl.Parent.Controls[i];
if (item is FrameControl)
{
currentControl.Parent.Controls.RemoveAt(i);
}
} this.currentControl.BringToFront();
fc = new FrameControl(this.currentControl);
fc.ControlResized += fc_ControlResized;
fc.ControlResizing += fc_ControlResizing;
this.currentControl.Parent.Controls.Add(fc);
fc.Visible = true;
fc.Draw();
}
if (ControlSelected != null)
{
ControlSelected(this.currentControl, e);
}
} /// <summary>
/// 功能描述:控件改变大小时事件
/// 作 者:beck.huang
/// 创建日期:2018-07-07 09:51:27
/// 任务编号:中餐
/// </summary>
/// <param name="sender">sender</param>
/// <param name="e">e</param>
void fc_ControlResizing(object sender, EventArgs e)
{
if (ControlResizing != null)
{
ControlResizing(sender, e);
}
} /// <summary>
/// 功能描述:控件改变大小完成事件
/// 作 者:beck.huang
/// 创建日期:2018-07-07 09:51:12
/// 任务编号:中餐
/// </summary>
/// <param name="sender">sender</param>
/// <param name="e">e</param>
void fc_ControlResized(object sender, EventArgs e)
{
if (ControlResized != null)
{
ControlResized(sender, e);
}
} /// <summary>
/// 鼠标按下事件：记录当前鼠标相对窗体的坐标
/// </summary>
void MouseDown(object sender, MouseEventArgs e)
{
pPoint = Cursor.Position;
} /// <summary>
/// 鼠标移动事件：让控件跟着鼠标移动
/// </summary>
void MouseMove(object sender, MouseEventArgs e)
{
if (m_moveType != MoveControlType.NONE)
{
if (m_moveType == MoveControlType.ANY)
{
Cursor.Current = Cursors.SizeAll;
}
else if (m_moveType == MoveControlType.VERTICAL)
{
Cursor.Current = Cursors.HSplit;
}
else
{
Cursor.Current = Cursors.VSplit;
}
// Cursor.Current = Cursors.SizeAll; //当鼠标处于控件内部时，显示光标样式为SizeAll
//当鼠标左键按下时才触发
if (e.Button == MouseButtons.Left)
{
MoveControl.DrawDragBound(this.currentControl);
if (fc != null) fc.Visible = false; //先隐藏
cPoint = Cursor.Position;//获得当前鼠标位置 int x = cPoint.X - pPoint.X;
int y = cPoint.Y - pPoint.Y;
if (m_moveType == MoveControlType.ANY)
{
currentControl.Location = new Point(currentControl.Location.X + x, currentControl.Location.Y + y);
}
else if (m_moveType == MoveControlType.VERTICAL)
{
currentControl.Location = new Point(currentControl.Location.X, currentControl.Location.Y + y);
}
else
{
currentControl.Location = new Point(currentControl.Location.X + x, currentControl.Location.Y);
}
pPoint = cPoint;
if (ControlMoving != null)
{
ControlMoving(currentControl, e);
}
}
}
} /// <summary>
/// 鼠标弹起事件：让自定义的边框出现
/// </summary>
void MouseUp(object sender, MouseEventArgs e)
{
this.currentControl.Refresh();
if (fc != null)
{
fc.Visible = true;
fc.Draw();
}
if (ControlMoved != null)
{
ControlMoved(currentControl, e);
}
}
#endregion
}
/// <summary>
/// 移动控件模式
/// </summary>
public enum MoveControlType
{
/// <summary>
/// 任意
/// </summary>
ANY = ,
/// <summary>
/// 垂直
/// </summary>
VERTICAL,
/// <summary>
/// 水平
/// </summary>
HORIZONTAL,
/// <summary>
/// 不可移动
/// </summary>
NONE
}
改变大小的类
public class FrameControl : UserControl
{
/// <summary>
/// 控件改变大小时触发事件
/// </summary>
public event EventHandler ControlResizing;
/// <summary>
/// 控件改变大小完成触发事件
/// </summary>
public event EventHandler ControlResized;
#region Constructors
/// <summary>
/// 构造函数
/// </summary>
public FrameControl(Control ctrl)
{
baseControl = ctrl;
AddEvents();
CreateBounds();
}
#endregion #region Fields
const int Band = ; //调整大小的响应边框
private int MinWidth = ; //最小宽度
private int MinHeight = ;//最小高度
Size square = new Size(Band, Band);//小矩形大小
Control baseControl; //基础控件，即被包围的控件
Rectangle[] smallRects = new Rectangle[];//边框中的八个小圆圈
Rectangle[] sideRects = new Rectangle[];//四条边框，用来做响应区域
Point[] linePoints = new Point[];//四条边，用于画虚线
Graphics g; //画图板
Rectangle ControlRect; //控件包含边框的区域
private Point pPoint; //上个鼠标坐标
private Point cPoint; //当前鼠标坐标
private MousePosOnCtrl mpoc; #endregion #region Properties
/// <summary>
/// 鼠标在控件中位置
/// </summary>
enum MousePosOnCtrl
{
NONE = ,
TOP = ,
RIGHT = ,
BOTTOM = ,
LEFT = ,
TOPLEFT = ,
TOPRIGHT = ,
BOTTOMLEFT = ,
BOTTOMRIGHT = ,
}
#endregion #region Methods
/// <summary>
/// 加载事件
/// </summary>
private void AddEvents()
{
this.Name = "FrameControl" + baseControl.Name;
this.MouseDown += new MouseEventHandler(FrameControl_MouseDown);
this.MouseMove += new MouseEventHandler(FrameControl_MouseMove);
this.MouseUp += new MouseEventHandler(FrameControl_MouseUp);
} #region 创建边框
/// <summary>
/// 建立控件可视区域
/// </summary>
private void CreateBounds()
{
//创建边界
int X = baseControl.Bounds.X - square.Width - ;
int Y = baseControl.Bounds.Y - square.Height - ;
int Height = baseControl.Bounds.Height + (square.Height * ) + ;
int Width = baseControl.Bounds.Width + (square.Width * ) + ;
this.Bounds = new Rectangle(X, Y, Width, Height);
this.BringToFront();
SetRectangles();
//设置可视区域
this.Region = new Region(BuildFrame());
g = this.CreateGraphics();
} /// <summary>
/// 设置定义8个小矩形的范围
/// </summary>
void SetRectangles()
{
//左上
smallRects[] = new Rectangle(new Point(, ), square);
//右上
smallRects[] = new Rectangle(new Point(this.Width - square.Width - , ), square);
//左下
smallRects[] = new Rectangle(new Point(, this.Height - square.Height - ), square);
//右下
smallRects[] = new Rectangle(new Point(this.Width - square.Width - , this.Height - square.Height - ), square);
//上中
smallRects[] = new Rectangle(new Point(this.Width / - , ), square);
//下中
smallRects[] = new Rectangle(new Point(this.Width / - , this.Height - square.Height - ), square);
//左中
smallRects[] = new Rectangle(new Point(, this.Height / - ), square);
//右中
smallRects[] = new Rectangle(new Point(square.Width + baseControl.Width + , this.Height / - ), square); //四条边线
//左上
linePoints[] = new Point(square.Width / , square.Height / );
//右上
linePoints[] = new Point(this.Width - square.Width / - , square.Height / );
//右下
linePoints[] = new Point(this.Width - square.Width / - , this.Height - square.Height / );
//左下
linePoints[] = new Point(square.Width / , this.Height - square.Height / - );
//左上
linePoints[] = new Point(square.Width / , square.Height / ); //整个包括周围边框的范围
ControlRect = new Rectangle(new Point(, ), this.Bounds.Size);
} /// <summary>
/// 设置边框控件可视区域
/// </summary>
/// <returns></returns>
private GraphicsPath BuildFrame()
{
GraphicsPath path = new GraphicsPath();
//上边框
sideRects[] = new Rectangle(, , this.Width - square.Width - , square.Height + );
//左边框
sideRects[] = new Rectangle(, square.Height + , square.Width + , this.Height - square.Height - );
//下边框
sideRects[] = new Rectangle(square.Width + , this.Height - square.Height - , this.Width - square.Width - , square.Height + );
//右边框
sideRects[] = new Rectangle(this.Width - square.Width - , , square.Width + , this.Height - square.Height - ); path.AddRectangle(sideRects[]);
path.AddRectangle(sideRects[]);
path.AddRectangle(sideRects[]);
path.AddRectangle(sideRects[]);
return path;
}
#endregion /// <summary>
/// 绘图
/// </summary>
public void Draw()
{
this.BringToFront();
//g.FillRectangles(Brushes.LightGray, sideRects); //填充四条边框的内部
Pen pen = new Pen(Color.Black);
pen.DashStyle = DashStyle.Dot;//设置为虚线,用虚线画四边，模拟微软效果
g.DrawLines(pen, linePoints);//绘制四条边线
g.FillRectangles(Brushes.White, smallRects); //填充8个小矩形的内部
foreach (Rectangle smallRect in smallRects)
{
g.DrawEllipse(Pens.Black, smallRect); //绘制8个小椭圆
}
//g.DrawRectangles(Pens.Black, smallRects); //绘制8个小矩形的黑色边线
} /// <summary>
/// 设置光标状态
/// </summary>
public bool SetCursorShape(int x, int y)
{
Point point = new Point(x, y);
if (!ControlRect.Contains(point))
{
Cursor.Current = Cursors.Arrow;
return false;
}
else if (smallRects[].Contains(point))
{
Cursor.Current = Cursors.SizeNWSE;
mpoc = MousePosOnCtrl.TOPLEFT;
}
else if (smallRects[].Contains(point))
{
Cursor.Current = Cursors.SizeNESW;
mpoc = MousePosOnCtrl.TOPRIGHT;
}
else if (smallRects[].Contains(point))
{
Cursor.Current = Cursors.SizeNESW;
mpoc = MousePosOnCtrl.BOTTOMLEFT;
}
else if (smallRects[].Contains(point))
{
Cursor.Current = Cursors.SizeNWSE;
mpoc = MousePosOnCtrl.BOTTOMRIGHT;
}
else if (sideRects[].Contains(point))
{
Cursor.Current = Cursors.SizeNS;
mpoc = MousePosOnCtrl.TOP;
}
else if (sideRects[].Contains(point))
{
Cursor.Current = Cursors.SizeWE;
mpoc = MousePosOnCtrl.LEFT;
}
else if (sideRects[].Contains(point))
{
Cursor.Current = Cursors.SizeNS;
mpoc = MousePosOnCtrl.BOTTOM;
}
else if (sideRects[].Contains(point))
{
Cursor.Current = Cursors.SizeWE;
mpoc = MousePosOnCtrl.RIGHT;
}
else
{
Cursor.Current = Cursors.Arrow;
}
return true;
} /// <summary>
/// 控件移动
/// </summary>
private void ControlMove(MouseEventArgs e)
{
cPoint = Cursor.Position;
int x = cPoint.X - pPoint.X;
int y = cPoint.Y - pPoint.Y;
switch (this.mpoc)
{
case MousePosOnCtrl.TOP:
if (baseControl.Height - y > MinHeight)
{
baseControl.Top += y;
baseControl.Height -= y;
}
else
{
baseControl.Top -= MinHeight - baseControl.Height;
baseControl.Height = MinHeight;
}
break;
case MousePosOnCtrl.BOTTOM:
if (baseControl.Height + y > MinHeight)
{
baseControl.Height += y;
}
else
{
baseControl.Height = MinHeight;
}
break;
case MousePosOnCtrl.LEFT:
if (baseControl.Width - x > MinWidth)
{
baseControl.Left += x;
baseControl.Width -= x;
}
else
{
baseControl.Left -= MinWidth - baseControl.Width;
baseControl.Width = MinWidth;
} break;
case MousePosOnCtrl.RIGHT:
if (baseControl.Width + x > MinWidth)
{
baseControl.Width += x;
}
else
{
baseControl.Width = MinWidth;
}
break;
case MousePosOnCtrl.TOPLEFT:
if (baseControl.Height - y > MinHeight)
{
baseControl.Top += y;
baseControl.Height -= y;
}
else
{
baseControl.Top -= MinHeight - baseControl.Height;
baseControl.Height = MinHeight;
}
if (baseControl.Width - x > MinWidth)
{
baseControl.Left += x;
baseControl.Width -= x;
}
else
{
baseControl.Left -= MinWidth - baseControl.Width;
baseControl.Width = MinWidth;
}
break;
case MousePosOnCtrl.TOPRIGHT:
if (baseControl.Height - y > MinHeight)
{
baseControl.Top += y;
baseControl.Height -= y;
}
else
{
baseControl.Top -= MinHeight - baseControl.Height;
baseControl.Height = MinHeight;
}
if (baseControl.Width + x > MinWidth)
{
baseControl.Width += x;
}
else
{
baseControl.Width = MinWidth;
}
break;
case MousePosOnCtrl.BOTTOMLEFT:
if (baseControl.Height + y > MinHeight)
{
baseControl.Height += y;
}
else
{
baseControl.Height = MinHeight;
}
if (baseControl.Width - x > MinWidth)
{
baseControl.Left += x;
baseControl.Width -= x;
}
else
{
baseControl.Left -= MinWidth - baseControl.Width;
baseControl.Width = MinWidth;
}
break;
case MousePosOnCtrl.BOTTOMRIGHT:
if (baseControl.Height + y > MinHeight)
{
baseControl.Height += y;
}
else
{
baseControl.Height = MinHeight;
}
if (baseControl.Width + x > MinWidth)
{
baseControl.Width += x;
}
else
{
baseControl.Width = MinWidth;
}
break; }
pPoint = Cursor.Position;
if (ControlResizing != null)
{
ControlResizing(baseControl, e);
}
} #endregion #region Events
/// <summary>
/// 鼠标按下事件：记录当前鼠标相对窗体的坐标
/// </summary>
void FrameControl_MouseDown(object sender, MouseEventArgs e)
{
pPoint = Cursor.Position;
} /// <summary>
/// 鼠标移动事件：让控件跟着鼠标移动
/// </summary>
void FrameControl_MouseMove(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Left)
{
this.Visible = false;
MoveControl.DrawDragBound(baseControl);
ControlMove(e);
}
else
{
this.Visible = true;
SetCursorShape(e.X, e.Y); //更新鼠标指针样式
}
} /// <summary>
/// 鼠标弹起事件：让自定义的边框出现
/// </summary>
void FrameControl_MouseUp(object sender, MouseEventArgs e)
{
this.baseControl.Refresh(); //刷掉黑色边框
this.Visible = true;
CreateBounds();
Draw();
if (ControlResized != null)
{
ControlResized(this.baseControl, e);
}
}
#endregion private void InitializeComponent()
{
this.SuspendLayout();
//
// FrameControl
//
this.BackColor = System.Drawing.Color.Transparent;
this.Name = "FrameControl";
this.ResumeLayout(false); }
}
使用方法
private void Form1_Load(object sender, EventArgs e)
{
//this.TransparencyKey = SystemColors.Control;
foreach (Control subCtrl in this.Controls)
{
MoveControl mc= new MoveControl(subCtrl,false, MoveControlType.HORIZONTAL);
mc.ControlMoving += mc_ControlMoving;
mc.ControlMoved += mc_ControlMoved;
mc.ControlResized += mc_ControlResized;
mc.ControlResizing += mc_ControlResizing;
}
} void mc_ControlResizing(object sender, EventArgs e)
{
Console.WriteLine("Resizing");
} void mc_ControlResized(object sender, EventArgs e)
{
Console.WriteLine("Resized");
} void mc_ControlMoved(object sender, EventArgs e)
{
Console.WriteLine("moved");
} void mc_ControlMoving(object sender, EventArgs e)
{
Console.WriteLine("moving");
}
效果如下