中文XML论坛--ShapedForms

发信人: walts (休息一会), 信区: DotNET
标  题: ShapedForms
发信站: BBS 水木清华站 (Wed Jul 25 19:16:50 2001)

－－－－－－－－－－－－－－－－－－－－－－－－
很久以前看到过27＃一位师兄写的一本书上有一张讲述
如何用MFC做各式各样界面的一节。可惜电子文档现在找
不到了。关键都是关于Region的函数。Vc版精华区应该有

－－－－－－－－－－－－－－－－－－－－－－
http://www.c-sharpcorner.com/Graphics/ShapedFormsJOD.asp

  Today Windows always appear with a rectangular shape. What if you could
have a window that was shaped like a circle, a square or a triangle or
any shape you want.

  I discovered tonight you could use regions to in effect clip a window to any
shape you want. The effect is almost to look like an active desktop
component as you cannot move these shaped windows. Having done this and
created some animation on your desktop I wonder if you could load a bitmap
as the basis for your windows. Note you lose the titlebars etc but it looks
like a useful technique.

Here is the source code. Apologies if its messy but its been a long night se
arching for how to do this. I have attached the exe as well for Beta 2

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Drawing.Drawing2D;
namespace ShapedForm
{
      /// <summary>
      /// Summary description for Form1.
      /// </summary>
      public class Form1 : System.Windows.Forms.Form
      {
            private System.Windows.Forms.Timer timer1;
            private System.ComponentModel.IContainer components;
            public float f;
            public Form1()
            {
                  //
                  // Required for Windows Form Designer support
                  //
                  InitializeComponent();
                   //
                  // TODO: Add any constructor code after InitializeComponen
t
call
                  //
            }
            /// <summary>
            /// Clean up any resources being used.
            /// </summary>
            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.components = new System.ComponentModel.Container();
                  this.timer1 = new
System.Windows.Forms.Timer(this.components);
                  //
                  // timer1
                  //
                  this.timer1.Enabled = true;
                  this.timer1.Interval = 50;
                  this.timer1.Tick += new System.EventHandler(this.timer1_Ti
ck);
                  //
                  // Form1
                  //
                  this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
                  this.ClientSize = new System.Drawing.Size(292, 273);
                  this.Name = "Form1";
                  this.Text = "Form1";
            }
            #endregion
            /// <summary>
            /// The main entry point for the application.
            /// </summary>
            [STAThread]
            static void Main ()
            {
                  Application.Run(new Form1());
            }
            private void timer1_Tick(object sender, System.EventArgs e)
            {
      this.Refresh();
           }
            protected override void OnPaint(PaintEventArgs e)
            {
                  GraphicsPath gp = new GraphicsPath();
                  gp.AddEllipse(20,20,110,110);
                  //gp.AddLine(30,30,110,110);
                  Matrix RotationTransform = new Matrix(1,0, 0,1,1,1);  // r
otation matrix
                  //Matrix TranslationTransform = new Matrix(1, 0, 0, 1, 0,
0); // translation matrix
                  PointF TheRotationPoint = new PointF(110.0f, 110.0f);  //
rotation point
                  // rotate the rotation transformation matrix f degrees aro
und TheRotationPoint
                  RotationTransform.RotateAt(f, TheRotationPoint);
                  //Call the Transform method of the Graphics Path in order
to multiply it by the rotation matrix and rotate the balloon
                  gp.Transform(RotationTransform);
                  e.Graphics.DrawPath(Pens.Black, gp);
                  f=f+10;
                  this.Region=new Region(gp);
           }
      }
}

--

A great poem is a fountain forever overflowing with the
　waters of wisdom and delight.
　　　　　　　　　　　
                                          —— Shelley

※ 修改:·walts 於 Jul 25 19:18:15 修改本文·[FROM: 166.111.142.118]
※ 来源:·BBS 水木清华站 smth.org·[FROM: 166.111.142.118]
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