用C# Builder制作不规则窗体

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　　作不规则窗体涉及到API的调用和大量的编程，是件很复杂的事情。下面我们可以使用Borland C# Builder轻松的实现一个不规则窗体，以下面用一个示例来讲述其制作过程。

　　一.准备不规则窗体位图

　　二.窗体的设置

　　三.代码的完成

　　一.准备不规则窗体位图

　　为了方便起见，我们随便找几个别的软件用的Skin。

　　这里使用金山影霸 2003的安装目录下的skinsoceanKingDVD_Disable.BMP

　　当然完全可以使用画图工具，制作一个有形状的位图，背景使用一种特别的颜色，如白色。这个颜色会在后面用得上。

　　[ 相关贴图 ]

　　二.窗体的设置

　　1.新建C# Application

　　[ 相关贴图 ]

　　2.选中新建的窗体，设置其相应属性：

　　(1).将 FormBorderStyle 属性设置为 None。

　　(2).将窗体的 BackgroundImage 属性设置为先前面的位图文件。

　　(3).将 TransparencyKey 属性设置为位图文件的背景色，本例中为白色。（此属性告诉应用程序窗体中的哪些部分需要设置为透明。 ）

　　(4).加一个picturebox1，就是一关闭位图，点击时关闭应用程序。

　　(5).加一个contextMenu1，添加一菜单项退出，将winform的contextMenu设为contextMenu1。

　　按F9运行你的程序，就可以看到你的不规则窗体了。

　　[ 相关贴图 ]

　　三.实现代码

　　前面做的窗口还不能移动。加入下面的代码使其能移动起来，帖出完整的示例代码：

using System;using System.Drawing;using System.Collections;using System.ComponentModel;using System.Windows.Forms;using System.Data;namespace SForm{/// summary/// Summary description for WinForm./// /summarypublic class WinForm : System.Windows.Forms.Form{/// summary/// Required designer variable./// /summaryprivate System.ComponentModel.Container components = null;private System.Windows.Forms.ContextMenu contextMenu1;private System.Windows.Forms.MenuItem menuItem1;private Point mouseOffset; //记录鼠标指针的坐标private bool isMouseDown = false;private System.Windows.Forms.PictureBox pictureBox1; //记录鼠标按键是否按下public WinForm(){//// Required for Windows Form Designer support//InitializeComponent();//// TODO: Add any constructor code after InitializeComponent call//}/// summary/// Clean up any resources being used./// /summaryprotected 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./// /summaryprivate void InitializeComponent(){System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(WinForm));this.contextMenu1 = new System.Windows.Forms.ContextMenu();this.menuItem1 = new System.Windows.Forms.MenuItem();this.pictureBox1 = new System.Windows.Forms.PictureBox();this.SuspendLayout();//// contextMenu1//this.contextMenu1.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {this.menuItem1});//// menuItem1//this.menuItem1.Index = 0;this.menuItem1.Text = "退出";this.menuItem1.Click += new System.EventHandler(this.menuItem1_Click);//// pictureBox1//this.pictureBox1.Image = ((System.Drawing.Image)(resources.GetObject("pictureBox1.Image")));this.pictureBox1.Location = new System.Drawing.Point(290, 8);this.pictureBox1.Name = "pictureBox1";this.pictureBox1.Size = new System.Drawing.Size(14, 13);this.pictureBox1.SizeMode = System.Windows.Forms.PictureBoxSizeMode.AutoSize;this.pictureBox1.TabIndex = 0;this.pictureBox1.TabStop = false;this.pictureBox1.Click += new System.EventHandler(this.pictureBox1_Click);//// WinForm//this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);this.BackgroundImage = ((System.Drawing.Image)(resources.GetObject("$this.BackgroundImage")));this.ClientSize = new System.Drawing.Size(365, 235);this.ContextMenu = this.contextMenu1;this.Controls.Add(this.pictureBox1);this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.None;this.MaximizeBox = false;this.MinimizeBox = false;this.Name = "WinForm";this.Text = "WinForm";this.TransparencyKey = System.Drawing.Color.White;this.MouseDown += new System.Windows.Forms.MouseEventHandler(this.WinForm_MouseDown);this.MouseUp += new System.Windows.Forms.MouseEventHandler(this.WinForm_MouseUp);this.MouseMove += new System.Windows.Forms.MouseEventHandler(this.WinForm_MouseMove);this.ResumeLayout(false);}#endregion/// summary/// The main entry point for the application./// /summary[STAThread]static void Main(){Application.Run(new WinForm());}private void menuItem1_Click(object sender, System.EventArgs e){this.Close();}private void WinForm_MouseMove(object sender, System.Windows.Forms.MouseEventArgs e){if (isMouseDown){Point mousePos = Control.MousePosition;mousePos.Offset(mouseOffset.X, mouseOffset.Y);Location = mousePos;}}private void WinForm_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e){int xOffset;int yOffset;if (e.Button == MouseButtons.Left){xOffset = -e.X - SystemInformation.FrameBorderSize.Width;yOffset = -e.Y - SystemInformation.CaptionHeight -SystemInformation.FrameBorderSize.Height;mouseOffset = new Point(xOffset, yOffset);isMouseDown = true;}}private void WinForm_MouseUp(object sender, System.Windows.Forms.MouseEventArgs e){// 修改鼠标状态isMouseDown的值// 确保只有鼠标左键按下并移动时，才移动窗体if (e.Button == MouseButtons.Left){isMouseDown = false;}}private void pictureBox1_Click(object sender, System.EventArgs e){this.Close();}}} 

　　注：如果监视器的颜色深度设置大于 24 位，TransparencyKey 设置成白色，窗体的非透明部分还是会显示出来，不知道为什么。