C# Winform 窗体用鼠标拖出虚线框....并且虚线框区域里的所有控件选中

wxm3630478 2009-12-03 02:23:50
网上找来点代码.....能够拉出虚线框了........但是不知道怎么选择控件...

Form窗体上...

this.GetChildAtPoint(e.Location); 用这个方法 但是不知道放什么地方(放那个事件里触发好);

或者谁有其他的方法........思路说说.......自己琢磨了变天搞出不来哈


代码在下面...


  public partial class Form1 : Form

  {

    bool MouseIsDown = false;

    Rectangle MouseRect = Rectangle.Empty;

    public Form1()

    {

      InitializeComponent();

      this.MouseDown += new MouseEventHandler(Form1_MouseDown);

      this.MouseMove += new MouseEventHandler(Form1_MouseMove);

      this.MouseUp += new MouseEventHandler(Form1_MouseUp);

    }



    void Form1_MouseDown(object sender, MouseEventArgs e)

    {

      MouseIsDown = true;

      DrawStart(e.Location);

    }



    void Form1_MouseMove(object sender, MouseEventArgs e)

    {

      if (MouseIsDown)

      {

        ResizeToRectangle(e.Location); 

      }

      //这里可以实现选中啊,但是必须要鼠标在子控件上活动过(鼠标路过子控件)才能选中

      //Control ctl = this.GetChildAtPoint(e.Location);

      //if (ctl != null)

      //{

      //  ctl.BackColor = Color.Blue;

      //}

    }



    void Form1_MouseUp(object sender, MouseEventArgs e)

    {

      this.Capture = false;

      Cursor.Clip = Rectangle.Empty;

      MouseIsDown = false;

      DrawRectangle();

      MouseRect = Rectangle.Empty;

    }



    private void Form1_Load(object sender, EventArgs e)

    {



    }



    private void ResizeToRectangle(Point p)

    {

      DrawRectangle();

      MouseRect.Width = p.X - MouseRect.Left;

      MouseRect.Height = p.Y - MouseRect.Top;

      DrawRectangle();

    }



    private void DrawStart(Point StartPoint)

    {

      this.Capture = true;

      Cursor.Clip = this.RectangleToScreen(new Rectangle(0, 0, ClientSize.Width, ClientSize.Height));

      MouseRect = new Rectangle(StartPoint.X, StartPoint.Y, 0, 0);

    }



    private void DrawRectangle()

    {

      Rectangle rect = this.RectangleToScreen(MouseRect);

      ControlPaint.DrawReversibleFrame(rect, Color.White, FrameStyle.Dashed);

    }



    private void Form1_ControlAdded(object sender, ControlEventArgs e)

    {

    }

  }
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皮蛋 2009-12-04
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用 zcl24 的方法可以啊。只要在MouseUp是修正下 MouseRect 的值就可以了
void frmMain_MouseUp(object sender, MouseEventArgs e)

        {

            this.Capture = false;

            Cursor.Clip = Rectangle.Empty;

            MouseIsDown = false;

            DrawRectangle();

            MouseRect = rectCorrection(MouseRect);

            foreach (Control ct in this.Controls)

            {

                // Point ctrlCenter = new Point(ct.Location.X + ct.Width / 2, ct.Location.Y + ct.Height / 2);



                //if (ctrlCenter.X > MouseRect.Location.X

                //    && ctrlCenter.X  < MouseRect.Location.X + MouseRect.Width

                //    && ctrlCenter.Y > MouseRect.Location.Y && ctrlCenter.Y > MouseRect.Location.Y + MouseRect.Height)

                if (MouseRect.Contains(ct.Location))

                {

                    if (ct is CheckBox)

                    {

                        if (((CheckBox)ct).Checked) //值选中

                        {

                            ((CheckBox)ct).Checked = false;

                        }

                        else

                        {

                            ((CheckBox)ct).Checked = true;

                        }

                        //控件选中 



                    }

                }

            }



            MouseRect = Rectangle.Empty;

        }

        //修正MouseRect 的值

        Rectangle rectCorrection(Rectangle oldRect)

        {

            if (oldRect.Width < 0)

            {

                oldRect.X += oldRect.Width;

                oldRect.Width *= -1;

            }

            if (oldRect.Height < 0)

            {

                oldRect.Y += oldRect.Height;

                oldRect.Height *= -1;

            }

            return new Rectangle(oldRect.X, oldRect.Y, oldRect.Width, oldRect.Height);

        }
wxm3630478 2009-12-04
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谢谢 各位了.......

大家都是写在MouseUp事件里的.......

谁能弄个MouseMove 事件里写个了

我觉得还是要用这个方法: this.GetChildAtPoint(坐标);

现在就是不知道 虚线和子控件 交叉的一瞬间 怎么去触发一个事件,得到一个(坐标)......我相信应该是可以实现的
Sugar_Tiger 2009-12-03
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小改一下,呵呵


foreach(Control ctl in this.Controls){

    Graphics g = Graphics.FromHwnd(this.Handle);

    //在此判断控件的位置,如果在选中范围内,则给其自绘选中效果

   if(控件在选中矩形范围内)

    {

        g.DrawRectangle(new Pen(Brushes.Red, 1), 

                        new Rectangle(ctl.Location.X - 1, ctl.Location.Y - 1, 

                        ctl.Size.Width + 1, ctl.Size.Height + 1));

                    g.Dispose();

    }

}
Sugar_Tiger 2009-12-03
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1)把最后画的矩形保存下来,rect,
2)在MouseUp 事件里,建立画笔,
判断控件的位置是否在rect范围之内.如果在的话给其自绘选中效果,我这做了,
可以实现,但是刷新时有点小问题,没空调了,你自己试下吧


Graphics g = Graphics.FromHwnd(this.Handle);

//在此判断控件的位置,如果在选中范围内,刚给其自绘选中效果

{

    g.DrawRectangle(new Pen(Brushes.Red, 1), 

                        new Rectangle(ctl.Location.X - 1, ctl.Location.Y - 1, 

                        ctl.Size.Width + 1, ctl.Size.Height + 1));

                    g.Dispose();

}
EsMo 2009-12-03
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[Quote=引用 23 楼 wxm3630478 的回复:]
Rectangle.Intersect()  还是不行了, 不知道在哪个事件里触发好......不用到循环最好了
[/Quote]

最后获取选中的控件 当然是在mouseup里了
用rectangle的Contain(Point)啊
point就是控件的location
wxm3630478 2009-12-03
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晕了,帖子都快沉的米见了...........难到就没有人做过这个东西吗.....
wxm3630478 2009-12-03
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Rectangle.Intersect() 还是不行了, 不知道在哪个事件里触发好......不用到循环最好了
zcl24 2009-12-03
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其实就 这些代码有用，其它都是测试用的 代码太长了 提交不了 所以才精简了
MouseRect.Contains(ct.Location)这个算法是可以扩展的

          foreach (Control ct in this.Controls)

            {

                // Point ctrlCenter = new Point(ct.Location.X + ct.Width / 2, ct.Location.Y + ct.Height / 2);



                //if (ctrlCenter.X > MouseRect.Location.X

                //    && ctrlCenter.X  < MouseRect.Location.X + MouseRect.Width

                //    && ctrlCenter.Y > MouseRect.Location.Y && ctrlCenter.Y > MouseRect.Location.Y + MouseRect.Height)

                if (MouseRect.Contains(ct.Location))

                {

                    if (ct is CheckBox)

                    {
EsMo 2009-12-03
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貌似选中以后 只能在内存中知道 在界面上是表现不出来的吧 除非手动设置边框选项或自己改皮肤等.....
jin20000 2009-12-03
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鼠标拖动事件应该也可以,这很明显必须,鼠标按下,鼠标移动,鼠标弹起三个事件一起用才是
biny101 2009-12-03
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测试了一下楼上的 用VS2008 提示两个问题
1、this.AutoScaleMode = AutoScaleMode.Font;提示不能手动更改
2、using System.Linq; 这个08里面的吧
wxm3630478 2009-12-03
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谢谢 上面的兄弟 试代码呀,这个是松开鼠标 选中控件......效果好像还行,不知道控件多了咋样

但是你的代码还是有点问题的:只能从窗体的左上向右下拉 才可以,其他的方向拉就选不中了,应该是那个判断的问题吧......呵呵
biny101 2009-12-03
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UP
zcl24 2009-12-03
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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;



namespace TestApp

{

    public partial class Form2 : Form

    {

        bool MouseIsDown = false;

        Rectangle MouseRect = Rectangle.Empty;

        public Form2()

        {

            InitializeComponent();

            this.MouseDown += new MouseEventHandler(frmMain_MouseDown);

            this.MouseMove += new MouseEventHandler(frmMain_MouseMove);

            this.MouseUp += new MouseEventHandler(frmMain_MouseUp);



        }



        void frmMain_MouseUp(object sender, MouseEventArgs e)

        {

            this.Capture = false;

            Cursor.Clip = Rectangle.Empty;

            MouseIsDown = false;

            DrawRectangle();



            foreach (Control ct in this.Controls)

            {

                // Point ctrlCenter = new Point(ct.Location.X + ct.Width / 2, ct.Location.Y + ct.Height / 2);



                //if (ctrlCenter.X > MouseRect.Location.X

                //    && ctrlCenter.X  < MouseRect.Location.X + MouseRect.Width

                //    && ctrlCenter.Y > MouseRect.Location.Y && ctrlCenter.Y > MouseRect.Location.Y + MouseRect.Height)

                if (MouseRect.Contains(ct.Location))

                {

                    if (ct is CheckBox)

                    {

                        if (((CheckBox)ct).Checked) //值选中

                        {

                            ((CheckBox)ct).Checked = false;

                        }

                        else

                        {

                            ((CheckBox)ct).Checked = true;

                        }

                        //控件选中 

                       

                    }

                }

            }



            MouseRect = Rectangle.Empty;

        }

        void frmMain_MouseMove(object sender, MouseEventArgs e)

        {

            if (MouseIsDown)

                ResizeToRectangle(e.Location);

        }

        void frmMain_MouseDown(object sender, MouseEventArgs e)

        {

            MouseIsDown = true;

            DrawStart(e.Location);

        }

        private void ResizeToRectangle(Point p)

        {

            DrawRectangle();

            MouseRect.Width = p.X - MouseRect.Left;

            MouseRect.Height = p.Y - MouseRect.Top;

            DrawRectangle();

        }

        private void DrawRectangle()

        {

            Rectangle rect = this.RectangleToScreen(MouseRect);

            ControlPaint.DrawReversibleFrame(rect, Color.White, FrameStyle.Dashed);

        }

        private void DrawStart(Point StartPoint)

        {

            this.Capture = true;

            Cursor.Clip = this.RectangleToScreen(new Rectangle(0, 0, ClientSize.Width, ClientSize.Height));

            MouseRect = new Rectangle(StartPoint.X, StartPoint.Y, 0, 0);

        }

    }

}
zcl24 2009-12-03
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using System.Windows.Forms;

using System.Drawing;

namespace TestApp

{

    partial class Form2

    {



        private System.ComponentModel.IContainer components = null;



        protected override void Dispose(bool disposing)

        {

            if (disposing && (components != null))

            {

                components.Dispose();

            }

            base.Dispose(disposing);

        }



        #region Windows Form Designer generated code



        private void InitializeComponent()

        {

            this.cb1 = new CheckBox();

            this.cb3 = new CheckBox();

            this.cb5 = new CheckBox();

            this.cb6 = new CheckBox();

            this.cb7 = new CheckBox();

            this.cb8 = new CheckBox();

            this.cb9 = new CheckBox();

            this.cb10 = new CheckBox();

            this.cb2 = new CheckBox();

            this.cb4 = new CheckBox();

            this.cb11 = new CheckBox();

            this.cb12 = new CheckBox();

            this.cb13 = new CheckBox();

            this.cb14 = new CheckBox();

            this.cb15 = new CheckBox();

            this.cb16 = new CheckBox();

            this.cb17 = new CheckBox();

            this.cb18 = new CheckBox();



            this.SuspendLayout();

            // 

            // cb1

            // 

            this.cb1.AutoSize = true;

            this.cb1.BackgroundImageLayout = ImageLayout.None;

            this.cb1.Location = new Point(29, 51);

            this.cb1.Name = "cb1";

            this.cb1.Size = new Size(80, 17);

            this.cb1.TabIndex = 0;

            this.cb1.Text = "cb1";

            this.cb1.UseVisualStyleBackColor = true;

            // 

            // cb3

            // 

            this.cb3.AutoSize = true;

            this.cb3.Location = new Point(29, 75);

            this.cb3.Name = "cb3";

            this.cb3.Size = new Size(80, 17);

            this.cb3.TabIndex = 2;

            this.cb3.Text = "cb3";

            this.cb3.UseVisualStyleBackColor = true;

            // 

            // cb5

            // 

            this.cb5.AutoSize = true;

            this.cb5.Location = new Point(29, 98);

            this.cb5.Name = "cb5";

            this.cb5.Size = new Size(80, 17);

            this.cb5.TabIndex = 4;

            this.cb5.Text = "cb5";

            this.cb5.UseVisualStyleBackColor = true;

            // 

            // cb6

            // 

            this.cb6.AutoSize = true;

            this.cb6.Location = new Point(29, 121);

            this.cb6.Name = "cb6";

            this.cb6.Size = new Size(80, 17);

            this.cb6.TabIndex = 5;

            this.cb6.Text = "cb6";

            this.cb6.UseVisualStyleBackColor = true;

            // 

            // cb7

            // 

            this.cb7.AutoSize = true;

            this.cb7.Location = new Point(29, 212);

            this.cb7.Name = "cb7";

            this.cb7.Size = new Size(80, 17);

            this.cb7.TabIndex = 9;

            this.cb7.Text = "cb7";



            // 

            // cb8

            // 

            this.cb8.AutoSize = true;

            this.cb8.Location = new Point(29, 189);

            this.cb8.Name = "cb8";



            this.cb8.TabIndex = 8;

            this.cb8.Text = "cb8";

            this.cb8.UseVisualStyleBackColor = true;

            // 

            // cb9

            // 

            this.cb9.AutoSize = true;

            this.cb9.Location = new Point(29, 166);

            this.cb9.Name = "cb9";

            this.cb9.Size = new Size(80, 17);

            this.cb9.TabIndex = 7;

            this.cb9.Text = "cb9";

            this.cb9.UseVisualStyleBackColor = true;

            // 

            // cb10

            // 

            this.cb10.AutoSize = true;

            this.cb10.Location = new Point(29, 142);

            this.cb10.Name = "cb10";

            this.cb10.Size = new Size(86, 17);

            this.cb10.TabIndex = 6;

            this.cb10.Text = "cb10";

            this.cb10.UseVisualStyleBackColor = true;

            // 

            // cb2

            // 

            this.cb2.AutoSize = true;

            this.cb2.Location = new Point(115, 212);

            this.cb2.Name = "cb2";

            this.cb2.Size = new Size(80, 17);

            this.cb2.TabIndex = 17;

            this.cb2.Text = "cb2";

            this.cb2.UseVisualStyleBackColor = true;

            // 

            // cb4

            // 

            this.cb4.AutoSize = true;

            this.cb4.Location = new Point(115, 189);

            this.cb4.Name = "cb4";

            this.cb4.Size = new Size(80, 17);

            this.cb4.TabIndex = 16;

            this.cb4.Text = "cb4";

            this.cb4.UseVisualStyleBackColor = true;

            // 

            // cb11

            // 

            this.cb11.AutoSize = true;

            this.cb11.Location = new Point(115, 166);

            this.cb11.Name = "cb11";

            this.cb11.Size = new Size(86, 17);

            this.cb11.TabIndex = 15;

            this.cb11.Text = "cb11";

            this.cb11.UseVisualStyleBackColor = true;

            // 

            // cb12

            // 

            this.cb12.AutoSize = true;

            this.cb12.Location = new Point(115, 142);

            this.cb12.Name = "cb12";

            this.cb12.Size = new Size(86, 17);

            this.cb12.TabIndex = 14;

            this.cb12.Text = "cb12";

            this.cb12.UseVisualStyleBackColor = true;

            // 

            // cb13

            // 

            this.cb13.AutoSize = true;

            this.cb13.Location = new Point(115, 121);

            this.cb13.Name = "cb13";

            this.cb13.Size = new Size(86, 17);

            this.cb13.TabIndex = 13;

            this.cb13.Text = "cb13";

            this.cb13.UseVisualStyleBackColor = true;

            // 

            // cb14

            // 

            this.cb14.AutoSize = true;

            this.cb14.Location = new Point(115, 98);

            this.cb14.Name = "cb14";

            this.cb14.Size = new Size(86, 17);

            this.cb14.TabIndex = 12;

            this.cb14.Text = "cb14";

            this.cb14.UseVisualStyleBackColor = true;

            // 

            // cb15

            // 

            this.cb15.AutoSize = true;

            this.cb15.Location = new Point(115, 75);

            this.cb15.Name = "cb15";

            this.cb15.Size = new Size(86, 17);

            this.cb15.TabIndex = 11;

            this.cb15.Text = "cb15";

            this.cb15.UseVisualStyleBackColor = true;

            // 

            // cb16

            // 

            this.cb16.AutoSize = true;

            this.cb16.Location = new Point(115, 51);

            this.cb16.Name = "cb16";

            this.cb16.Size = new Size(86, 17);

            this.cb16.TabIndex = 10;

            this.cb16.Text = "cb16";

            this.cb16.UseVisualStyleBackColor = true;

            // 

            // cb17

            // 

            this.cb17.AutoSize = true;

            this.cb17.Location = new Point(220, 212);

            this.cb17.Name = "cb17";

            this.cb17.Size = new Size(86, 17);

            this.cb17.TabIndex = 25;

            this.cb17.Text = "cb17";

            this.cb17.UseVisualStyleBackColor = true;

  

            // 

            // Form2

            // 

            this.AllowDrop = true;

            this.AutoScaleDimensions = new SizeF(6F, 13F);

            this.AutoScaleMode = AutoScaleMode.Font;

            this.ClientSize = new Size(403, 297);

            this.Controls.Add(this.cb17);

            this.Controls.Add(this.cb2);

            this.Controls.Add(this.cb4);

            this.Controls.Add(this.cb11);

            this.Controls.Add(this.cb12);

            this.Controls.Add(this.cb13);

            this.Controls.Add(this.cb14);

            this.Controls.Add(this.cb15);

            this.Controls.Add(this.cb16);

            this.Controls.Add(this.cb7);

            this.Controls.Add(this.cb8);

            this.Controls.Add(this.cb9);

            this.Controls.Add(this.cb10);

            this.Controls.Add(this.cb6);

            this.Controls.Add(this.cb5);

            this.Controls.Add(this.cb3);

            this.Controls.Add(this.cb1);

            this.Name = "Form2";

            this.Text = "Form2";

            this.ResumeLayout(false);

            this.PerformLayout();



        }



        #endregion



        private CheckBox cb1;

        private CheckBox cb3;

        private CheckBox cb5;

        private CheckBox cb6;

        private CheckBox cb7;

        private CheckBox cb8;

        private CheckBox cb9;

        private CheckBox cb10;

        private CheckBox cb2;

        private CheckBox cb4;

        private CheckBox cb11;

        private CheckBox cb12;

        private CheckBox cb13;

        private CheckBox cb14;

        private CheckBox cb15;

        private CheckBox cb16;

        private CheckBox cb17;

        private CheckBox cb18;

    }

}
wxm3630478 2009-12-03
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额,让我想想.....

顺便顶一把.........别沉了
Red_angelX 2009-12-03
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子控件的Rectangle可以事先遍历得到
wxm3630478 2009-12-03
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Rectangle.Intersect 咋满足啊......???

Rectangle.Intersect好像要得到两个矩形框......子控件的Rectangle咋得到呢??
wxm3630478 2009-12-03
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写在鼠标弹起事件里,感觉不好.......

谁有米有好的点子啊.......
EsMo 2009-12-03
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mousedown mousemove mouseup都要用
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