动态控件的移动和缩放

1、动态控件的移动及缩放动态控件的移动及缩放，网上有很多，各有千秋。这一个实例源码，是我自己学习C#在VS2010上编写的。有一些不如意的地方，如缩放中有些发卡，请各位老师斧正。Victor.King2016.6.20 Email:victor_jx namespace ChangePositionSizecontrols partial class Form1 / <summary> / 必需的设计器变量。 / </summary> private System.ComponentModel.IContainer components = null; / <summ

2、ary> / 清理所有正在使用的资源。 / </summary> / <param name="disposing">如果应释放托管资源，为 true；否则为 false。</param> protected override void Dispose(bool disposing) if (disposing && (components != null) components.Dispose(); base.Dispose(disposing); #region Windows 窗体设计器生成的代码 / <

3、summary> / 设计器支持所需的方法 - 不要 / 使用代码编辑器修改此方法的内容。 / </summary> private void InitializeComponent() System.ComponentModel.ComponentResourceManager resources = new System.ComponentModel.ComponentResourceManager(typeof(Form1); this.pictureBox1 = new System.Windows.Forms.PictureBox(); this.button1 =

4、 new System.Windows.Forms.Button(); this.button2 = new System.Windows.Forms.Button(); this.button3 = new System.Windows.Forms.Button(); (System.ComponentModel.ISupportInitialize)(this.pictureBox1).BeginInit(); this.SuspendLayout(); / / pictureBox1 / this.pictureBox1.BackgroundImage = (System.Drawing

5、.Image)(resources.GetObject("pictureBox1.BackgroundImage"); this.pictureBox1.BackgroundImageLayout = System.Windows.Forms.ImageLayout.Zoom; this.pictureBox1.Location = new System.Drawing.Point(4, 4); this.pictureBox1.Name = "pictureBox1" this.pictureBox1.Size = new System.Drawing

6、.Size(500, 347); this.pictureBox1.TabIndex = 0; this.pictureBox1.TabStop = false; / / button1 / this.button1.Location = new System.Drawing.Point(21, 358); this.button1.Name = "button1" this.button1.Size = new System.Drawing.Size(99, 23); this.button1.TabIndex = 1; this.button1.Text = "

7、;添加一个文本框" this.button1.UseVisualStyleBackColor = true; this.button1.Click += new System.EventHandler(this.button1_Click); / / button2 / this.button2.Location = new System.Drawing.Point(126, 358); this.button2.Name = "button2" this.button2.Size = new System.Drawing.Size(99, 23); this.b

8、utton2.TabIndex = 2; this.button2.Text = "删除一个文本框" this.button2.UseVisualStyleBackColor = true; this.button2.Click += new System.EventHandler(this.button2_Click); / / button3 / this.button3.Location = new System.Drawing.Point(231, 358); this.button3.Name = "button3" this.button3.

9、Size = new System.Drawing.Size(99, 23); this.button3.TabIndex = 3; this.button3.Text = "退出" this.button3.UseVisualStyleBackColor = true; this.button3.Click += new System.EventHandler(this.button3_Click); / / Form1 / this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F); this.AutoSca

10、leMode = System.Windows.Forms.AutoScaleMode.Font; this.ClientSize = new System.Drawing.Size(508, 393); this.Controls.Add(this.button3); this.Controls.Add(this.button2); this.Controls.Add(this.button1); this.Controls.Add(this.pictureBox1); this.Name = "Form1" this.Text = "Form1" t

11、his.Load += new System.EventHandler(this.Form1_Load); (System.ComponentModel.ISupportInitialize)(this.pictureBox1).EndInit(); this.ResumeLayout(false); #endregion private System.Windows.Forms.PictureBox pictureBox1; private System.Windows.Forms.Button button1; private System.Windows.Forms.Button but

12、ton2; private System.Windows.Forms.Button button3; using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Windows.Forms;using ChangePositionSizecontrols.ControlsMoveSize;namespace ChangePositio

13、nSizecontrols public partial class Form1 : Form public Form1() InitializeComponent(); int i = 1; int x = 20; int y = 20; Control curCon = new Control(); string focuseCon; MouseOperation MOperation = new MouseOperation(); private void Form1_Load(object sender, EventArgs e) private void button1_Click(

14、object sender, EventArgs e) pictureBox1.Refresh(); Label textbox = new Label(); textbox.Name = "TextBox" + i; textbox.Text = "TextBox" + i; textbox.Location = new System.Drawing.Point(x, y); textbox.AutoSize = false; textbox.Width = 100; textbox.Height = 25; textbox.BackColor = C

15、olor.Transparent; textbox.BorderStyle = BorderStyle.FixedSingle; curCon = textbox; pictureBox1.Controls.Add(curCon); curCon.BringToFront(); i = i + 1; AddEvents(); private void button2_Click(object sender, EventArgs e) if (curCon.Name = focuseCon) curCon.Dispose(); pictureBox1.Refresh(); curCon.Name

16、 = "" else MessageBox.Show("请选择要删除的文本框！"); private void button3_Click(object sender, EventArgs e) this.Close(); this.Dispose(); void AddEvents() curCon.MouseClick +=new MouseEventHandler(curCon_MouseClick); void curCon_MouseClick(object sender, MouseEventArgs e) curCon =(Control)

17、sender; curCon.Focus(); focuseCon = curCon.Name; pictureBox1.Refresh(); if (e.Button = MouseButtons.Left) MOperation.Draw(pictureBox1, curCon); MOperation.AddEvents(curCon, pictureBox1); using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Drawing;using Syst

18、em.Drawing.Drawing2D;using System.Windows.Forms;namespace ChangePositionSizecontrols.ControlsMoveSize class MouseOperation int mark; Control curCon; Point ctlLocation = new Point(); Size ctlSize = new Size(); PictureBox picBox = new PictureBox(); private Point lastPoint; /上个鼠标坐标 private Point curPoi

19、nt; /当前鼠标坐标 const int Band = 6; /调整大小的响应边框 Size Square = new Size(Band, Band);/小矩形大小 Rectangle smallRects = new Rectangle8;/边框中的八个小圆圈 Rectangle sideRects = new Rectangle4;/四条边框，用来做响应区域 Rectangle ControlRect; Point linePoints = new Point5; Graphics g; MoveControl MControl = new MoveControl(); SizeCha

20、nge SChange = new SizeChange(); public void AddEvents(Control ctl,PictureBox pcb) curCon = ctl; picBox = pcb; curCon.MouseDown += new MouseEventHandler(curCon_MouseDown); picBox.MouseDown+=new MouseEventHandler(picBox_MouseDown); curCon.MouseMove += new MouseEventHandler(curCon_MouseMove); picBox.Mo

21、useMove += new MouseEventHandler(picBox_MouseMove); curCon.MouseUp += new MouseEventHandler(curCon_MouseUp); picBox.MouseUp+=new MouseEventHandler(picBox_MouseUp); void curCon_MouseDown(object sender, MouseEventArgs e) lastPoint = Cursor.Position; MControl.getPoint(lastPoint.X, lastPoint.Y); void pi

22、cBox_MouseDown(object sender, MouseEventArgs e) lastPoint = Cursor.Position; SChange.getPoint(lastPoint.X, lastPoint.Y); void picBox_MouseMove(object sender, MouseEventArgs e) if (curCon.Focused) int mark = SetCursorShape(picBox, curCon); if (e.Button = MouseButtons.Left) SChange.ChangeSize(mark, cu

23、rCon); void curCon_MouseMove(object sender, MouseEventArgs e) if (curCon.Focused) int mark = SetCursorShape(picBox, curCon); if (e.Button = MouseButtons.Left) MControl.ControlMove(curCon, picBox); void curCon_MouseUp(object sender, MouseEventArgs e) if (e.Button = MouseButtons.Left) picBox.Refresh()

24、; Draw(picBox, curCon); void picBox_MouseUp(object sender, MouseEventArgs e) if (e.Button = MouseButtons.Left) picBox.Refresh(); Draw(picBox, curCon); void ReplyRect() curCon.BringToFront(); ctlLocation = new Point(curCon.Location.X, curCon.Location.Y); ctlSize = new Size(curCon.Size.Width, curCon.S

25、ize.Height); /定义4个4角小正方形的范围 smallRects0 = new Rectangle(new Point(ctlLocation.X - Square.Width, ctlLocation.Y - Square.Height), Square); smallRects1 = new Rectangle(new Point(ctlLocation.X + ctlSize.Width-1, ctlLocation.Y - Square.Height), Square); smallRects2 = new Rectangle(new Point(ctlLocation.X

26、 + ctlSize.Width-1, ctlLocation.Y + ctlSize.Height-1), Square); smallRects3 = new Rectangle(new Point(ctlLocation.X - Square.Width, ctlLocation.Y + ctlSize.Height-1), Square); /定义4个侧面小正方形的范围 smallRects4 = new Rectangle(new Point(ctlLocation.X - Square.Width, ctlLocation.Y + (ctlSize.Height / 2) - (S

27、quare.Height / 2), Square); smallRects5 = new Rectangle(new Point(ctlLocation.X + (ctlSize.Width / 2) - (Square.Width / 2), ctlLocation.Y - Square.Height), Square); smallRects6 = new Rectangle(new Point(ctlLocation.X + ctlSize.Width-1, ctlLocation.Y + (ctlSize.Height / 2) - (Square.Height / 2), Squa

28、re); smallRects7 = new Rectangle(new Point(ctlLocation.X + (ctlSize.Width / 2) - (Square.Width / 2), ctlLocation.Y + ctlSize.Height-1), Square); /定义4个侧面矩形的范围 sideRects0 = new Rectangle(ctlLocation.X, ctlLocation.Y - Square.Height, ctlSize.Width, Square.Height); sideRects1 = new Rectangle(ctlLocation

29、.X + ctlSize.Width, ctlLocation.Y, Square.Width, ctlSize.Height); sideRects2 = new Rectangle(ctlLocation.X, ctlLocation.Y + ctlSize.Height, ctlSize.Width, Square.Height); sideRects3 = new Rectangle(ctlLocation.X - Square.Width, ctlLocation.Y, Square.Width, ctlSize.Height); /定义当前控件矩形的范围 ControlRect =

30、 new Rectangle(new Point(ctlLocation.X, ctlLocation.Y), ctlSize); public void Draw(PictureBox pcb,Control ctl) picBox = pcb; curCon = ctl; if (curCon.Focused) ctlLocation = new Point(curCon.Location.X, curCon.Location.Y); ctlSize = new Size(curCon.Size.Width, curCon.Size.Height); picBox.BringToFront

31、(); ReplyRect(); linePoints0 = new Point(ctlLocation.X - Square.Width / 2, ctlLocation.Y - Square.Height / 2); /右上 linePoints1 = new Point(ctlLocation.X + ctlSize.Width + Square.Width / 2 - 1, ctlLocation.Y - Square.Height / 2); /右下 linePoints2 = new Point(ctlLocation.X + ctlSize.Width + Square.Widt

32、h / 2 - 1, ctlLocation.Y + ctlSize.Height + Square.Height / 2 - 1); /左下 linePoints3 = new Point(ctlLocation.X - Square.Width / 2, ctlLocation.Y + ctlSize.Height + Square.Height / 2 - 1); /左上 linePoints4 = new Point(ctlLocation.X - Square.Width / 2, ctlLocation.Y - Square.Height / 2); curCon.BringToF

33、ront(); picBox.Refresh(); g = picBox.CreateGraphics(); 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.Blue, sideRects); g.FillRectangles(Brushes.White, smallRects); /填充8个小矩形的内部 foreach (Rectangle small

34、Rect in smallRects) g.DrawRectangles(Pens.Black, smallRects); /绘制8个小矩形的黑色边线 public int SetCursorShape(PictureBox pcb, Control ctl) picBox = pcb; curCon = ctl; curPoint = picBox.PointToClient(Control.MousePosition); ReplyRect(); if(curCon.Bounds.Contains(curPoint) Cursor.Current = Cursors.SizeAll; ma

35、rk = 0; else if (smallRects0.Contains(curPoint) Cursor.Current = Cursors.SizeNWSE; mark = 1; else if (smallRects1.Contains(curPoint) Cursor.Current = Cursors.SizeNESW; mark = 2; else if (smallRects2.Contains(curPoint) Cursor.Current = Cursors.SizeNWSE; mark = 3; else if (smallRects3.Contains(curPoin

36、t) Cursor.Current = Cursors.SizeNESW; mark = 4; else if (sideRects0.Contains(curPoint) Cursor.Current = Cursors.SizeNS; mark = 5; else if (sideRects1.Contains(curPoint) Cursor.Current = Cursors.SizeWE; mark = 6; else if (sideRects2.Contains(curPoint) Cursor.Current = Cursors.SizeNS; mark = 7; else i

37、f (sideRects3.Contains(curPoint) Cursor.Current = Cursors.SizeWE; mark = 8; else Cursor.Current = Cursors.Arrow; mark = 9; return mark; using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Drawing;using System.Windows.Forms;namespace ChangePositionSizecontro

38、ls.ControlsMoveSize class MoveControl Point lastPoint = new Point(); Point curPoint = new Point(); Control curCon = new Control(); public void ControlMove(Control ctl,PictureBox pcb) curCon = ctl; pcb.Refresh(); DrawDragBound(curCon); curPoint = Cursor.Position;/获得当前鼠标位置 int x = curPoint.X - lastPoi

39、nt.X; int y = curPoint.Y - lastPoint.Y; curCon.Location = new Point(curCon.Location.X + x, curCon.Location.Y + y); lastPoint = curPoint; public static void DrawDragBound(Control ctrl) ctrl.Refresh(); Graphics g = ctrl.CreateGraphics(); int width = ctrl.Width; int height = ctrl.Height; Point ps = new Point5new 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); public void getPoint(int x, int y) lastPoint = new Point(x, y); using System;using System.Col