鼠标形状已经改变了符合要求，但是窗体大小怎么控制呢？半天也没整出来：（
代码如下：
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
namespace WindowsApplication5
{
/// <summary>
/// Form1 的摘要说明。
/// </summary>
public class Form1 : System.Windows.Forms.Form
{
private CusLabel label1;
/// <summary>
/// 必需的设计器变量。
/// </summary>
private System.ComponentModel.Container components = null;
public Form1()
{
//
// Windows 窗体设计器支持所必需的
//
InitializeComponent();
//
// TODO: 在 InitializeComponent 调用后添加任何构造函数代码
//
}
/// <summary>
/// 清理所有正在使用的资源。
/// </summary>
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
#region Windows 窗体设计器生成的代码
/// <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()
{
this.label1 = new WindowsApplication5.Form1.CusLabel();
this.SuspendLayout();
//
// label1
//
this.label1.BackColor = System.Drawing.SystemColors.ActiveCaption;
this.label1.Dock = System.Windows.Forms.DockStyle.Top;
this.label1.Location = new System.Drawing.Point(0, 0);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(292, 23);
this.label1.TabIndex = 0;
//
// Form1
//
this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
this.ClientSize = new System.Drawing.Size(292, 273);
this.Controls.Add(this.label1);
this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.None;
this.Name = "Form1";
this.Text = "Form1";
this.ResumeLayout(false);
}
#endregion
/// <summary>
/// 应用程序的主入口点。
/// </summary>
[STAThread]
static void Main()
{
Application.Run(new Form1());
}
public class CusLabel: System.Windows.Forms.Label
{
private const int WM_NCHITTEST = 0x84;
private const int WM_SIZING = 532;
private const int HTERROR = (-2);
private const int HTTRANSPARENT = (-1);
private const int HTNOWHERE = 0;
private const int HTCLIENT = 1;
private const int HTCAPTION = 2;
private const int HTSYSMENU = 3;
private const int HTGROWBOX = 4;
private const int HTSIZE = HTGROWBOX;
private const int HTMENU = 5;
private const int HTHSCROLL = 6;
private const int HTVSCROLL = 7;
private const int HTMINBUTTON = 8;
private const int HTMAXBUTTON = 9;
private const int HTLEFT = 10;
private const int HTRIGHT = 11;
private const int HTTOP = 12;
private const int HTTOPLEFT = 13;
private const int HTTOPRIGHT = 14;
private const int HTBOTTOM = 15;
private const int HTBOTTOMLEFT = 16;
private const int HTBOTTOMRIGHT = 17;
private const int HTBORDER = 18;
private const int HTREDUCE = HTMINBUTTON;
private const int HTZOOM = HTMAXBUTTON;
private const int HTSIZEFIRST = HTLEFT;
private const int HTSIZELAST = HTBOTTOMRIGHT;
/* WINVER >= 0x0400 */
private const int HTOBJECT = 19;
private const int HTCLOSE = 20;
private const int HTHELP = 21;
/* WINVER >= 0x0400 */
private const int BorderWidth = 2;
private int CaptionHeight = 17;
//可以调整窗体的大小和移动窗体的位置
protected override void WndProc(ref System.Windows.Forms.Message m)
{
switch(m.Msg)
{
case WM_NCHITTEST:
base.WndProc(ref m);
if (DesignMode)
{
return;
}
if ((int)m.Result == HTCLIENT)
{
m.HWnd = this.Handle;
int pLeft=0;
int pTop=0;
bool IsControl = true;
if (IsControl)
{
if ((this.Parent as Form).FormBorderStyle==FormBorderStyle.None)
{
pLeft=this.Parent.Left;
pTop=this.Parent.Top;
}
else
{
pLeft=this.Parent.Left+2;
CaptionHeight = this.Parent.Height-this.Parent.ClientRectangle.Height-2 * BorderWidth;
pTop=this.Parent.Top + CaptionHeight + BorderWidth-2;
}
}
if ((Cursor.Position.X<=pLeft + this.Left + BorderWidth) && (Cursor.Position.Y <= pTop + this.Top + BorderWidth))
m.Result = (IntPtr)HTTOPLEFT;//左上
else if ((Cursor.Position.X>=pLeft + this.Left + this.Width-BorderWidth) && (Cursor.Position.Y<=pTop + this.Top +BorderWidth))
m.Result = (IntPtr)HTTOPRIGHT;//右上
else if ((Cursor.Position.X <= pLeft + this.Left + BorderWidth) && (Cursor.Position.Y>=pTop + this.Top + this.Height-BorderWidth))
m.Result = (IntPtr)HTLEFT;//左下－》左
else if ((Cursor.Position.X>=pLeft + this.Left + this.Width-BorderWidth) && (Cursor.Position.Y>=pTop + this.Top + this.Height-BorderWidth))
m.Result = (IntPtr)HTRIGHT;//右下－》右
else if (Cursor.Position.X<=pLeft + this.Left + BorderWidth-1)
m.Result = (IntPtr)HTLEFT;//左
else if (Cursor.Position.X>=pLeft + this.Left + this.Width-BorderWidth)
m.Result = (IntPtr)HTRIGHT;//右
else if (Cursor.Position.Y<=pTop + this.Top + BorderWidth-1)
m.Result = (IntPtr)HTTOP;//上
else if (Cursor.Position.Y<=pTop + this.Top + CaptionHeight + BorderWidth )
{
if (Cursor.Position.X<=pLeft + this.Left + BorderWidth + CaptionHeight)
{
m.Result = (IntPtr)HTSYSMENU;
}
else
{
m.Result = (IntPtr)HTCAPTION;
}
}
else
m.Result = (IntPtr)HTCAPTION;//移动窗体
}
return;
default:
base.WndProc(ref m);
break;
}
}
}
private const int WM_NCHITTEST = 0x84;
private const int HTCLIENT = 0x1;
private const int HTSIZE = 0x4;
private const int HTCAPTION = 0x2;
private const int WM_SIZING = 532;
private const int HTMINBUTTON = 8;
private const int BorderWidth = 5;
// m.Result = (IntPtr)20;//关闭按纽
// m.Result = (IntPtr)21;//help按纽
//可以调整窗体的大小和移动窗体的位置
protected override void WndProc(ref Message m)
{
System.Diagnostics.Debug.WriteLine(m.ToString());
switch(m.Msg)
{
case WM_NCHITTEST:
base.WndProc(ref m);
if (DesignMode)
{
return;
}
if (((int)m.Result == HTCLIENT ))
{
if ((Cursor.Position.X<=this.Left + BorderWidth) && (Cursor.Position.Y <= this.Top + BorderWidth))
m.Result = (IntPtr)13;//左上
else if ((Cursor.Position.X>=this.Left + this.Width-BorderWidth) && (Cursor.Position.Y<=this.Top +BorderWidth))
m.Result = (IntPtr)14;//右上
else if ((Cursor.Position.X <= this.Left + BorderWidth) && (Cursor.Position.Y>=this.Top + this.Height-BorderWidth))
m.Result = (IntPtr)16;//左下
else if ((Cursor.Position.X>=this.Left + this.Width-BorderWidth) && (Cursor.Position.Y>=this.Top + this.Height-BorderWidth))
m.Result = (IntPtr)17;//右下
else if (Cursor.Position.X<=this.Left + BorderWidth)
m.Result = (IntPtr)10;//左
else if (Cursor.Position.X>=this.Left + this.Width-BorderWidth)
m.Result = (IntPtr)11;//右
else if (Cursor.Position.Y<=this.Top + BorderWidth)
m.Result = (IntPtr)12;//上
else if (Cursor.Position.Y>=this.Top + this.Height-BorderWidth)
m.Result = (IntPtr)15;//下
else
m.Result = (IntPtr)HTCAPTION;//移动窗体
}
return;
default:
base.WndProc(ref m);
break;
}
}
}
}
