mainform.cs

WindowsMobile平台应用开发一书的源码

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Drawing.Imaging;
using System.Text;
using System.Windows.Forms;

namespace DrawInBitmapAndSave
{
	public partial class MainForm : Form
	{
		private Bitmap m_bmp = null;

		public MainForm()
		{
			InitializeComponent();

			m_drawInBitmap();
			m_saveBitmap();
		}

		private void m_drawInBitmap()
		{
			// 用于确定位图的位置和大小
			Rectangle rcBitmap = new Rectangle(0, 0, 200, 150);

			// 创建一个空的位图
			m_bmp = new Bitmap(rcBitmap.Width, rcBitmap.Height);

			// 从上面的位图创建一个绘图表面
			Graphics g = Graphics.FromImage(m_bmp);

			// 创建用于填充位图和绘制文字的画刷
			SolidBrush bb = new SolidBrush(Color.Black);
			SolidBrush bw = new SolidBrush(Color.White);

			// 创建文字的字体和格式
			Font f = new Font("Arial", 25.0f, FontStyle.Bold | FontStyle.Italic);
			StringFormat sf = new StringFormat();
			sf.Alignment = StringAlignment.Center;
			sf.LineAlignment = StringAlignment.Center;

			// 填充整个位图
			g.FillRectangle(bb, rcBitmap);

			// 在位图上绘制文字
			g.DrawString("Mobile", f, bw, rcBitmap, sf);

			// 释放资源
			g.Dispose();
			bb.Dispose();
			bw.Dispose();
			f.Dispose();
			sf.Dispose();
		}

		private void m_saveBitmap()
		{
			if(m_bmp == null)
				return;

			m_bmp.Save("mobile.gif", ImageFormat.Gif);
		}

		private void MainForm_Paint(object sender, PaintEventArgs e)
		{
			if(m_bmp == null)
				return;

			e.Graphics.DrawImage(m_bmp, 0, 0);
		}
	}
}