怎样实现Vista半透窗体

How to make a Transparent WinForm like VistaForm in VS2005

Introduction

This is article about how to make a transparent form in VS2005 like VistaForm. When I saw the VistaForm at my very first time. I was thinking how to make a form like that. I searched lots fo web sites for a good solution, but I didn't find an answer. Some guys told me to make such a form with 3 forms, I think it's a crasy idea, we can do that, but i don't know how we can use the form in Dialog model. I tried serval ways to implement this form and now the solution i provide maybe a good and simply idea. I'm not really making the form to be tansparent, the code is as following. The most important code is Graphics.CopyFromScreen

Source Code

e.Graphics.CopyFromScreen(this.PointToScreen(new Point(0, 0)),            new Point(0, 0), new Size(this.Width, 23));e.Graphics.CopyFromScreen(this.PointToScreen(new Point(0, 0)),            new Point(0, 0), new Size(3, this.Height));e.Graphics.CopyFromScreen(this.PointToScreen(new Point(this.Width - 4, 0)),            new Point(this.Width - 4, 0), new Size(3, this.Height));e.Graphics.CopyFromScreen(this.PointToScreen(new Point(0,            this.Height - 4)), new Point(0, this.Height - 4),            new Size(this.Width, 3));

Key Point

public GlassForm(){    InitializeComponent();    //FocusForm = this;    base.Padding = new Padding(4, 24, 5, 4);    //this property is very important to make form repaint    base.Opacity = 0.99;    this.FormBorderStyle = FormBorderStyle.None;    SetStyle(ControlStyles.UserPaint, true);    SetStyle(ControlStyles.AllPaintingInWmPaint, true);    SetStyle(ControlStyles.OptimizedDoubleBuffer, true);    SetStyle(ControlStyles.SupportsTransparentBackColor, true);    SetStyle(ControlStyles.ResizeRedraw, true);}public new double Opacity//we make a new Opcity property to stop any modify //of this property from outside{    get    {        return 1;    }}

Collapse

protected override void OnPaint(PaintEventArgs e){     base.OnPaint(e);    e.Graphics.Clear(System.Drawing.Color.White);    e.Graphics.CopyFromScreen(this.PointToScreen(new Point(0, 0)),                               new Point(0, 0), new Size(this.Width, 23));    e.Graphics.CopyFromScreen(this.PointToScreen(new Point(0, 0)),                               new Point(0, 0), new Size(3, this.Height));    e.Graphics.CopyFromScreen(this.PointToScreen(new Point(this.Width - 4, 0)),                               new Point(this.Width - 4, 0),                               new Size(3, this.Height));    e.Graphics.CopyFromScreen(this.PointToScreen(new Point(0,                               this.Height - 4)),                               new Point(0, this.Height - 4),                               new Size(this.Width, 3));    if (FocusForm==this)    {        e.Graphics.FillRectangle(new SolidBrush(                   this.ColorSetting.ActiveHeaderColor),        new Rectangle(new Point(0, 0), this.Size));    }    else    {        e.Graphics.FillRectangle(new SolidBrush(                   this.ColorSetting.HeaderColor),        new Rectangle(new Point(0, 0), this.Size));    }    //.HighQuality;    e.Graphics.SmoothingMode =          System.Drawing.Drawing2D.SmoothingMode.HighSpeed;    System.Drawing.Drawing2D.GraphicsPath path =            new System.Drawing.Drawing2D.GraphicsPath();    path.AddLine(2, 0, this.Width - 4, 0);    path.AddLine(this.Width - 4, 0, this.Width - 2, 2);    path.AddLine(this.Width - 2, 2, this.Width - 2, this.Height - 4);    path.AddLine(this.Width - 2, this.Height - 4,                  this.Width - 4, this.Height - 2);    path.AddLine(this.Width - 4, this.Height - 2, 2, this.Height - 2);    path.AddLine(2, this.Height - 2, 0, this.Height - 4);    path.AddLine(0, this.Height - 4, 0, 2);    path.AddLine(0, 2, 2, 0);    System.Drawing.Drawing2D.GraphicsPath pathFrame =          new System.Drawing.Drawing2D.GraphicsPath();    pathFrame.AddLine(2, 0, this.Width - 3, 0);    pathFrame.AddLine(this.Width - 3, 0, this.Width - 1, 2);    pathFrame.AddLine(this.Width - 1, 2, this.Width - 1, this.Height - 3);    pathFrame.AddLine(this.Width - 1, this.Height - 4,                       this.Width - 4, this.Height - 1);    pathFrame.AddLine(this.Width - 4, this.Height - 1, 2, this.Height - 1);    pathFrame.AddLine(2, this.Height - 1, 0, this.Height - 4);    pathFrame.AddLine(0, this.Height - 4, 0, 2);    pathFrame.AddLine(0, 2, 2, 0);    this.Region = new Region(pathFrame);    //e.Graphics.FillPath(new SolidBrush(Color.FromArgb(30,    //                    this.HeaderColor)), pathFrame);    this.BackColor = this.ColorSetting.BackColor;    if (FocusForm == this)        e.Graphics.DrawPath(new              Pen(this.ColorSetting.ActiveBorderColor), path);    else        e.Graphics.DrawPath(new Pen(this.ColorSetting.BorderColor), path);    Rectangle clientRegion = new Rectangle(3, 23,                              this.Width - 8, this.Height - 28);    e.Graphics.FillRectangle(new SolidBrush(               this.ColorSetting.BackColor), clientRegion);    if (FocusForm == this)        e.Graphics.DrawRectangle(new             Pen(this.ColorSetting.ActiveBorderColor), clientRegion);    else        e.Graphics.DrawRectangle(new             Pen(this.ColorSetting.BorderColor), clientRegion);    if(this.BackgroundImage!=null)        e.Graphics.DrawImage(this.BackgroundImage, clientRegion);    if(this.Icon!=null)        e.Graphics.DrawIcon(this.Icon, new Rectangle(3, 3, 16, 16));    Font f = new Font("ArialBlack", (float)9,FontStyle.Bold);    e.Graphics.DrawString(this.Text, f, Brushes.White, 21, 3);    e.Graphics.DrawString(this.Text, f, Brushes.White, 23, 3);    e.Graphics.DrawString(this.Text, f, Brushes.White, 22, 2);    e.Graphics.DrawString(this.Text, f, Brushes.White, 22, 4);    e.Graphics.DrawString(this.Text, f, Brushes.Black, 22, 3);    if (this.IsMinOn)    {        e.Graphics.DrawImage(            global::Sayes.Controls.Vista.Properties.Resources.MinHigh,            this.MinRegion.GetBounds(e.Graphics));    }    else    {        e.Graphics.DrawImage(            global::Sayes.Controls.Vista.Properties.Resources.Min,            this.MinRegion.GetBounds(e.Graphics));    }    if (this.IsCloseOn)    {        e.Graphics.DrawImage(            global::Sayes.Controls.Vista.Properties.Resources.CloseHigh,            this.CloseRegion.GetBounds(e.Graphics));    }    else    {        e.Graphics.DrawImage(            global::Sayes.Controls.Vista.Properties.Resources.Close,            this.CloseRegion.GetBounds(e.Graphics));    }    if (this.IsMaxOn)    {        e.Graphics.DrawImage(            global::Sayes.Controls.Vista.Properties.Resources.MaxHigh,            this.MaxRegion.GetBounds(e.Graphics));    }    else    {        e.Graphics.DrawImage(            global::Sayes.Controls.Vista.Properties.Resources.Max,            this.MaxRegion.GetBounds(e.Graphics));    }}

 以上源码，可以到这里下载：http://download.csdn.net/source/511107

也可以到出处下载: http://www.codeproject.com/KB/aspnet/How_to_make_VistaForm.aspx