form1.cs

C#150例

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;

namespace Example040_空心字体效果演示
{
	/// <summary>
	/// Form1 的摘要说明。
	/// </summary>
	public class Form1 : System.Windows.Forms.Form
	{
		private System.Windows.Forms.Button button1;
		private System.Windows.Forms.TextBox textBox1;
		/// <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 Form Designer generated code
		/// <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.button1 = new System.Windows.Forms.Button();
			this.textBox1 = new System.Windows.Forms.TextBox();
			this.SuspendLayout();
			// 
			// button1
			// 
			this.button1.Location = new System.Drawing.Point(24, 104);
			this.button1.Name = "button1";
			this.button1.Size = new System.Drawing.Size(97, 23);
			this.button1.TabIndex = 0;
			this.button1.Text = "View";
			this.button1.Click += new System.EventHandler(this.button1_Click);
			// 
			// textBox1
			// 
			this.textBox1.Location = new System.Drawing.Point(24, 80);
			this.textBox1.Name = "textBox1";
			this.textBox1.Size = new System.Drawing.Size(96, 21);
			this.textBox1.TabIndex = 1;
			this.textBox1.Text = "textBox1";
			// 
			// Form1
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
			this.ClientSize = new System.Drawing.Size(152, 141);
			this.Controls.AddRange(new System.Windows.Forms.Control[] {
																		  this.textBox1,
																		  this.button1});
			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());
		}

		[System.Runtime.InteropServices.DllImport("gdi32")]
		private static extern IntPtr CreateFont(int H,int W,int E,int O,int FW,int I,int u,int S,int C,int OP,int CP,int Q,int PAF,string F);
		[System.Runtime.InteropServices.DllImport("gdi32")]
		private static extern IntPtr BeginPath(IntPtr hdc);
		[System.Runtime.InteropServices.DllImport("gdi32")]
		private static extern IntPtr EndPath(IntPtr hdc);
		[System.Runtime.InteropServices.DllImport("gdi32")]
		private static extern int SetBkMode(IntPtr hdc,int nBkMode);
		[System.Runtime.InteropServices.DllImport("gdi32")]
		private static extern IntPtr StrokePath(IntPtr hdc);
		[System.Runtime.InteropServices.DllImport("gdi32")]
		private static extern int TextOut(IntPtr hdc,int x,int y,string lpString,int nCount);
		[System.Runtime.InteropServices.DllImport("gdi32")]
		private static extern IntPtr SelectObject(IntPtr hdc,IntPtr hObject);
		[System.Runtime.InteropServices.DllImport("user32")]
		private static extern IntPtr GetDC(IntPtr hwnd);
		const int FW_HEAVY = 900;
		const int ANSI_CHARSET = 0;
		const int OUT_DEFAULT_PRECIS = 0;
		const int CLIP_DEFAULT_PRECIS = 0;
		const int DEFAULT_QUALITY = 0;
		const int DEFAULT_PITCH = 0;
		const int FF_SWISS = 32;
		const int TRANSPARENT = 1;

		private void button1_Click(object sender, System.EventArgs e)
		{
			IntPtr dc=GetDC(this.Handle);
			IntPtr m_Font=CreateFont(50, 20, 0, 0, FW_HEAVY, 1, 0,
				0, ANSI_CHARSET, OUT_DEFAULT_PRECIS,
				CLIP_DEFAULT_PRECIS, DEFAULT_QUALITY,
				DEFAULT_PITCH | FF_SWISS, "Times New Roman");
			//创建字体
			//这里的字体一定要是TrueType Font

			BeginPath(dc);
			//开始捕获轮廓
			SetBkMode(dc, TRANSPARENT );
			IntPtr m_OldFont=SelectObject(dc,m_Font);
			TextOut(dc,10,0,this.textBox1.Text,this.textBox1.Text.Length);
			SelectObject(dc,m_OldFont);
			EndPath(dc);
			//结束捕获
			StrokePath(dc);
			//将捕获的轮廓用当前的Pen画到Canvas上		
		}
	}
}