如何使一个控件在运行时也能如Microsoft Project中甘特图的任务时间条那样拉伸？

Question

OK啦，http://expert.csdn.net/Expert/topic/2235/2235675.xml?temp=.2538721
请rouser(我是一棵秋天的树) 来领分

Answer 1

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;namespace WindowsApplication1
{
public class Form1 : System.Windows.Forms.Form
{
private int ox;
private int oy;
private Control control; private System.Windows.Forms.Button button1;
private System.ComponentModel.Container components = null; public Form1()
{
InitializeComponent();
} protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null) 
{
components.Dispose();
}
}
base.Dispose( disposing );
} #region Windows Form Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
this.button1 = new System.Windows.Forms.Button();
this.SuspendLayout();
// 
// button1
// 
this.button1.Location = new System.Drawing.Point(130, 115);
this.button1.Name = "button1";
this.button1.Size = new System.Drawing.Size(278, 65);
this.button1.TabIndex = 0;
this.button1.Text = "button1";
this.button1.MouseUp += new System.Windows.Forms.MouseEventHandler(this.Form1_MouseUp);
this.button1.MouseMove += new System.Windows.Forms.MouseEventHandler(this.button1_MouseMove);
this.button1.MouseDown += new System.Windows.Forms.MouseEventHandler(this.Control_MouseDown);
// 
// Form1
// 
this.AutoScaleBaseSize = new System.Drawing.Size(5, 15);
this.ClientSize = new System.Drawing.Size(536, 350);
this.Controls.AddRange(new System.Windows.Forms.Control[] {
  this.button1});
this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedSingle;
this.Name = "Form1";
this.Text = "Form1";
this.MouseDown += new System.Windows.Forms.MouseEventHandler(this.Form1_MouseDown);
this.MouseUp += new System.Windows.Forms.MouseEventHandler(this.Form1_MouseUp);
this.MouseMove += new System.Windows.Forms.MouseEventHandler(this.Form1_MouseMove);
this.ResumeLayout(false); }
#endregion [STAThread]
static void Main() 
{
Application.Run(new Form1());
} private void Form1_MouseMove(object sender, System.Windows.Forms.MouseEventArgs e)
{
if(this.control == null)
return; if(e.Button == MouseButtons.Left)
{
this.control.Width += (e.X - ox);
this.control.Height += (e.Y - oy);
}
} private void Control_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
{
if(e.Button == MouseButtons.Left)
{
ox = e.X;
oy = e.Y;
this.Capture = true;
}
} private void Form1_MouseUp(object sender, System.Windows.Forms.MouseEventArgs e)
{
if(e.Button == MouseButtons.Left)
this.Capture = false;
} private void button1_MouseMove(object sender, System.Windows.Forms.MouseEventArgs e)
{
this.control = (Control)sender;
if(e.X > (this.control.ClientSize.Width - 4))
{
this.Cursor = Cursors.SizeWE;
if(e.Y > (this.control.ClientSize.Height - 4))
this.Cursor = Cursors.SizeNWSE;
}
else if(e.Y > (this.control.ClientSize.Height - 4))
this.Cursor = Cursors.SizeNS;
else
this.Cursor = Cursors.Default;
} private void Form1_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
{
this.control = null;
}
}
}

Answer 2

調試完了，這段代碼是對的 ：)using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Diagnostics;
using System.Data;namespace WindowsApplication1
{
public class Form1 : System.Windows.Forms.Form
{
private int ox;
private int oy;
private Control control; private System.Windows.Forms.Button button1;
private System.ComponentModel.Container components = null; public Form1()
{
InitializeComponent();
} protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null) 
{
components.Dispose();
}
}
base.Dispose( disposing );
} #region Windows Form Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
this.button1 = new System.Windows.Forms.Button();
this.SuspendLayout();
// 
// button1
// 
this.button1.BackColor = System.Drawing.SystemColors.ControlDark;
this.button1.FlatStyle = System.Windows.Forms.FlatStyle.Flat;
this.button1.Location = new System.Drawing.Point(130, 115);
this.button1.Name = "button1";
this.button1.Size = new System.Drawing.Size(278, 104);
this.button1.TabIndex = 0;
this.button1.MouseUp += new System.Windows.Forms.MouseEventHandler(this.Form1_MouseUp);
this.button1.MouseMove += new System.Windows.Forms.MouseEventHandler(this.button1_MouseMove);
this.button1.MouseDown += new System.Windows.Forms.MouseEventHandler(this.Control_MouseDown);
// 
// Form1
// 
this.AutoScaleBaseSize = new System.Drawing.Size(5, 15);
this.ClientSize = new System.Drawing.Size(536, 350);
this.Controls.AddRange(new System.Windows.Forms.Control[] {
  this.button1});
this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedSingle;
this.Name = "Form1";
this.Text = "Form1";
this.MouseDown += new System.Windows.Forms.MouseEventHandler(this.Form1_MouseDown);
this.MouseUp += new System.Windows.Forms.MouseEventHandler(this.Form1_MouseUp);
this.MouseMove += new System.Windows.Forms.MouseEventHandler(this.Form1_MouseMove);
this.ResumeLayout(false); }
#endregion [STAThread]
static void Main() 
{
Application.Run(new Form1());
} private void Form1_MouseMove(object sender, System.Windows.Forms.MouseEventArgs e)
{
if(this.control == null)
return; if(e.Button == MouseButtons.Left)
{
if(this.Cursor == Cursors.SizeWE)  // <---->
{
this.control.Width += (e.X - ox);
//Debug.WriteLine(this.control.Width.ToString());
ox = e.X;
return;
} if(this.Cursor == Cursors.SizeNS)
{
this.control.Height += (e.Y - oy);
//Debug.WriteLine(this.control.Height.ToString());
oy = e.Y;
return;
} if(this.Cursor == Cursors.SizeNWSE)
{
this.control.Width += (e.X - ox);
this.control.Height += (e.Y - oy);
//Debug.WriteLine(this.control.Width.ToString());
//Debug.WriteLine(this.control.Height.ToString());
ox = e.X;
oy = e.Y;
return;
}
}
} private void Control_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
{
if(e.Button == MouseButtons.Left)
{
ox = e.X + ((Control)sender).Left;
oy = e.Y + ((Control)sender).Top;
this.Capture = true;
}
} private void button1_MouseMove(object sender, System.Windows.Forms.MouseEventArgs e)
{
this.control = (Control)sender;
if(e.X > (this.control.ClientSize.Width - 4))
{
this.Cursor = Cursors.SizeWE;  // <---->
if(e.Y > (this.control.ClientSize.Height - 4))
this.Cursor = Cursors.SizeNWSE;
}
else if(e.Y > (this.control.ClientSize.Height - 4))
this.Cursor = Cursors.SizeNS;
else
this.Cursor = Cursors.Default;
} private void Form1_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
{
this.control = null;
} private void Form1_MouseUp(object sender, System.Windows.Forms.MouseEventArgs e)
{
if(e.Button == MouseButtons.Left)
{
this.Capture = false;
this.Cursor = Cursors.Default;
}
}
}
}

Answer 3

我改了一下：
private void Form3_MouseMove(object sender, System.Windows.Forms.MouseEventArgs e)
{
if(e.X > (this.ClientSize.Width - 4))
{
this.Cursor = Cursors.SizeWE;
if(e.Y > (this.ClientSize.Height - 4))
{
this.Cursor = Cursors.SizeNWSE;
}
}
else if(e.Y > (this.ClientSize.Height - 4))
{
this.Cursor = Cursors.SizeNS;
}
else
this.Cursor = Cursors.Default;
} private void Form3_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
{
if(e.Button == MouseButtons.Left)
{
ox = e.X;
oy = e.Y;
this.Capture = true;
}
} private void Form3_MouseUp(object sender, System.Windows.Forms.MouseEventArgs e)
{
if(ox > (this.ClientSize.Width - 4))
{
this.Cursor = Cursors.SizeWE;    
if(e.Button == MouseButtons.Left)
this.Width += (e.X - ox);
if(oy > (this.ClientSize.Height - 4))
{
this.Cursor = Cursors.SizeNWSE;  
if(e.Button == MouseButtons.Left)
this.Height += (e.Y - oy);
}
}
else if(oy > (this.ClientSize.Height - 4))
{
this.Cursor = Cursors.SizeNS;  
if(e.Button == MouseButtons.Left)
this.Height += (e.Y - oy);
}
else
this.Cursor = Cursors.Default;
}