因為業務需要，百度了個可移動可改變大小的控件，然后自己修改了下，功能類似vs的設計面板中的功能差不多，可拖拽，改變大小
拖動的
public class MoveControl { #region 自定義事件 /// <summary> /// 控件移動時觸發事件 /// </summary> public event EventHandler ControlMoving; /// <summary> /// 控件移動完成觸發事件 /// </summary> public event EventHandler ControlMoved; /// <summary> /// 控件改變大小時觸發事件 /// </summary> public event EventHandler ControlResizing; /// <summary> /// 控件改變大小完成觸發事件 /// </summary> public event EventHandler ControlResized; /// <summary> /// 選中控件時發生 /// </summary> public event EventHandler ControlSelected; #endregion /// <summary> /// 是否可調整尺寸 /// </summary> bool m_blnResize = true; MoveControlType m_moveType; #region Constructors /// <summary> /// 功能描述:構造函數 /// 作 者:beck.huang /// 創建日期:2018-07-07 09:20:41 /// 任務編號:中餐 /// </summary> /// <param name="ctrl">ctrl</param> /// <param name="blnResize">是否可調整尺寸</param> /// <param name="moveType">移動模式</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; //傳入的控件 private Point pPoint; //上個鼠標坐標 private Point cPoint; //當前鼠標坐標 FrameControl fc;//邊框控件 #endregion #region Properties #endregion #region Methods /// <summary> /// 掛載事件 /// </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> /// 繪制拖拉時的黑色邊框 /// </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[5]{new Point(0,0),new Point(width -1,0), new Point(width -1,height -1),new Point(0,height-1),new Point(0,0)}; g.DrawLines(new Pen(Color.Black), ps); } #endregion #region Events /// <summary> /// 鼠標單擊事件：用來顯示邊框 /// </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，清除掉其他控件的邊框 for (int i = currentControl.Parent.Controls.Count-1; i >=0; 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:控件改變大小時事件 /// 作 者:beck.huang /// 創建日期:2018-07-07 09:51:27 /// 任務編號: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:控件改變大小完成事件 /// 作 者:beck.huang /// 創建日期:2018-07-07 09:51:12 /// 任務編號: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> /// 鼠標按下事件：記錄當前鼠標相對窗體的坐標 /// </summary> void MouseDown(object sender, MouseEventArgs e) { pPoint = Cursor.Position; } /// <summary> /// 鼠標移動事件：讓控件跟着鼠標移動 /// </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; //當鼠標處於控件內部時，顯示光標樣式為SizeAll //當鼠標左鍵按下時才觸發 if (e.Button == MouseButtons.Left) { MoveControl.DrawDragBound(this.currentControl); if (fc != null) fc.Visible = false; //先隱藏 cPoint = Cursor.Position;//獲得當前鼠標位置 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> /// 鼠標彈起事件：讓自定義的邊框出現 /// </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> /// 移動控件模式 /// </summary> public enum MoveControlType { /// <summary> /// 任意 /// </summary> ANY = 0, /// <summary> /// 垂直 /// </summary> VERTICAL, /// <summary> /// 水平 /// </summary> HORIZONTAL, /// <summary> /// 不可移動 /// </summary> NONE }
改變大小的類
public class FrameControl : UserControl { /// <summary> /// 控件改變大小時觸發事件 /// </summary> public event EventHandler ControlResizing; /// <summary> /// 控件改變大小完成觸發事件 /// </summary> public event EventHandler ControlResized; #region Constructors /// <summary> /// 構造函數 /// </summary> public FrameControl(Control ctrl) { baseControl = ctrl; AddEvents(); CreateBounds(); } #endregion #region Fields const int Band = 6; //調整大小的響應邊框 private int MinWidth = 20; //最小寬度 private int MinHeight = 20;//最小高度 Size square = new Size(Band, Band);//小矩形大小 Control baseControl; //基礎控件，即被包圍的控件 Rectangle[] smallRects = new Rectangle[8];//邊框中的八個小圓圈 Rectangle[] sideRects = new Rectangle[4];//四條邊框，用來做響應區域 Point[] linePoints = new Point[5];//四條邊，用於畫虛線 Graphics g; //畫圖板 Rectangle ControlRect; //控件包含邊框的區域 private Point pPoint; //上個鼠標坐標 private Point cPoint; //當前鼠標坐標 private MousePosOnCtrl mpoc; #endregion #region Properties /// <summary> /// 鼠標在控件中位置 /// </summary> enum MousePosOnCtrl { NONE = 0, TOP = 1, RIGHT = 2, BOTTOM = 3, LEFT = 4, TOPLEFT = 5, TOPRIGHT = 6, BOTTOMLEFT = 7, BOTTOMRIGHT = 8, } #endregion #region Methods /// <summary> /// 加載事件 /// </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 創建邊框 /// <summary> /// 建立控件可視區域 /// </summary> private void CreateBounds() { //創建邊界 int X = baseControl.Bounds.X - square.Width - 1; int Y = baseControl.Bounds.Y - square.Height - 1; int Height = baseControl.Bounds.Height + (square.Height * 2) + 2; int Width = baseControl.Bounds.Width + (square.Width * 2) + 2; this.Bounds = new Rectangle(X, Y, Width, Height); this.BringToFront(); SetRectangles(); //設置可視區域 this.Region = new Region(BuildFrame()); g = this.CreateGraphics(); } /// <summary> /// 設置定義8個小矩形的范圍 /// </summary> void SetRectangles() { //左上 smallRects[0] = new Rectangle(new Point(0, 0), square); //右上 smallRects[1] = new Rectangle(new Point(this.Width - square.Width - 1, 0), square); //左下 smallRects[2] = new Rectangle(new Point(0, this.Height - square.Height - 1), square); //右下 smallRects[3] = new Rectangle(new Point(this.Width - square.Width - 1, this.Height - square.Height - 1), square); //上中 smallRects[4] = new Rectangle(new Point(this.Width / 2 - 1, 0), square); //下中 smallRects[5] = new Rectangle(new Point(this.Width / 2 - 1, this.Height - square.Height - 1), square); //左中 smallRects[6] = new Rectangle(new Point(0, this.Height / 2 - 1), square); //右中 smallRects[7] = new Rectangle(new Point(square.Width + baseControl.Width + 1, this.Height / 2 - 1), square); //四條邊線 //左上 linePoints[0] = new Point(square.Width / 2, square.Height / 2); //右上 linePoints[1] = new Point(this.Width - square.Width / 2 - 1, square.Height / 2); //右下 linePoints[2] = new Point(this.Width - square.Width / 2 - 1, this.Height - square.Height / 2); //左下 linePoints[3] = new Point(square.Width / 2, this.Height - square.Height / 2 - 1); //左上 linePoints[4] = new Point(square.Width / 2, square.Height / 2); //整個包括周圍邊框的范圍 ControlRect = new Rectangle(new Point(0, 0), this.Bounds.Size); } /// <summary> /// 設置邊框控件可視區域 /// </summary> /// <returns></returns> private GraphicsPath BuildFrame() { GraphicsPath path = new GraphicsPath(); //上邊框 sideRects[0] = new Rectangle(0, 0, this.Width - square.Width - 1, square.Height + 1); //左邊框 sideRects[1] = new Rectangle(0, square.Height + 1, square.Width + 1, this.Height - square.Height - 1); //下邊框 sideRects[2] = new Rectangle(square.Width + 1, this.Height - square.Height - 1, this.Width - square.Width - 1, square.Height + 1); //右邊框 sideRects[3] = new Rectangle(this.Width - square.Width - 1, 0, square.Width + 1, this.Height - square.Height - 1); path.AddRectangle(sideRects[0]); path.AddRectangle(sideRects[1]); path.AddRectangle(sideRects[2]); path.AddRectangle(sideRects[3]); return path; } #endregion /// <summary> /// 繪圖 /// </summary> public void Draw() { this.BringToFront(); //g.FillRectangles(Brushes.LightGray, sideRects); //填充四條邊框的內部 Pen pen = new Pen(Color.Black); pen.DashStyle = DashStyle.Dot;//設置為虛線,用虛線畫四邊，模擬微軟效果 g.DrawLines(pen, linePoints);//繪制四條邊線 g.FillRectangles(Brushes.White, smallRects); //填充8個小矩形的內部 foreach (Rectangle smallRect in smallRects) { g.DrawEllipse(Pens.Black, smallRect); //繪制8個小橢圓 } //g.DrawRectangles(Pens.Black, smallRects); //繪制8個小矩形的黑色邊線 } /// <summary> /// 設置光標狀態 /// </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[0].Contains(point)) { Cursor.Current = Cursors.SizeNWSE; mpoc = MousePosOnCtrl.TOPLEFT; } else if (smallRects[1].Contains(point)) { Cursor.Current = Cursors.SizeNESW; mpoc = MousePosOnCtrl.TOPRIGHT; } else if (smallRects[2].Contains(point)) { Cursor.Current = Cursors.SizeNESW; mpoc = MousePosOnCtrl.BOTTOMLEFT; } else if (smallRects[3].Contains(point)) { Cursor.Current = Cursors.SizeNWSE; mpoc = MousePosOnCtrl.BOTTOMRIGHT; } else if (sideRects[0].Contains(point)) { Cursor.Current = Cursors.SizeNS; mpoc = MousePosOnCtrl.TOP; } else if (sideRects[1].Contains(point)) { Cursor.Current = Cursors.SizeWE; mpoc = MousePosOnCtrl.LEFT; } else if (sideRects[2].Contains(point)) { Cursor.Current = Cursors.SizeNS; mpoc = MousePosOnCtrl.BOTTOM; } else if (sideRects[3].Contains(point)) { Cursor.Current = Cursors.SizeWE; mpoc = MousePosOnCtrl.RIGHT; } else { Cursor.Current = Cursors.Arrow; } return true; } /// <summary> /// 控件移動 /// </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> /// 鼠標按下事件：記錄當前鼠標相對窗體的坐標 /// </summary> void FrameControl_MouseDown(object sender, MouseEventArgs e) { pPoint = Cursor.Position; } /// <summary> /// 鼠標移動事件：讓控件跟着鼠標移動 /// </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); //更新鼠標指針樣式 } } /// <summary> /// 鼠標彈起事件：讓自定義的邊框出現 /// </summary> void FrameControl_MouseUp(object sender, MouseEventArgs e) { this.baseControl.Refresh(); //刷掉黑色邊框 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
