using?System;
using?System.Drawing;

namespace?GDIDB
{
	///?

	///?Class?to?implement?Double?Buffering?
	///?NT?Almond?
	///?24?July?2003
	///?

	///?
	public?class?DBGraphics
	{
		private	Graphics	graphics;
		private?Bitmap		memoryBitmap;
		private	int			width;
		private	int			height;

		///?

		///?Default?constructor
		///?

		public?DBGraphics（）
		{
			width	=?0;
			height	=?0;
		}

		///?

		///?Creates?double?buffer?object
		///?

		///?Window?forms?Graphics?object
		///?width?of?paint?area
		///?height?of?paint?area
		///?true/false?if?double?buffer?is?created
		public?bool?CreateDoubleBuffer（Graphics?g?int?width?int?height）
		{

			if?（memoryBitmap?!=?null）
			{
				memoryBitmap.Dispose（）;
				memoryBitmap?=?null;
			}

			if?（graphics?!=?null）
			{
				graphics.Dispose（）;
				graphics?=?null;
			}

			if?（width?<=?0?||?height?<=?0）
				return?false;


			if?（（width?!=?this.width）?||?（height?!=?this.height））
			{
				this.width?=?width;
				this.height?=?height;

				memoryBitmap	=?new?Bitmap（width?height）;
				graphics		=?Graphics.FromImage（memoryBitmap）;
			}

			return?true;
		}


		///?

		///?Renders?the?double?buffer?to?the?screen
		///?

		///?Window?forms?Graphics?object
		public?void?Render（Graphics?g）
		{
			if?（memoryBitmap?!=?null）
				g.DrawImage（memoryBitmap?new?Rectangle（00?width?height）00?width?height?GraphicsUnit.Pixel）;
		}

		///?

		///?
		///?

		///?true?if?double?buffering?can?be?achieved
		public?bool?CanDoubleBuffer（）
		{
			return?graphics?!=?null;
		}

		///?

		///?Accessor?for?memory?graphics?object
		///?

		public?Graphics?g?
		{
			get?
			{?
				return?graphics;?
			}
		}		
	}
}

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

????..A..H.?????32256??2017-07-21?14:58??高級繪圖c#波形波形控件\ClassLibDemo\.vs\ClassLibDemo\v15\.suo

?????文件???????3520??2006-06-25?15:31??高級繪圖c#波形波形控件\ClassLibDemo\Backup\Backup\ClassLibDemo\ClassLibDemo.csproj

?????文件???????2001??2004-12-17?15:44??高級繪圖c#波形波形控件\ClassLibDemo\Backup\Backup\ClassLibDemo\DBGraphics.cs

?????文件???????6421??2006-06-25?15:29??高級繪圖c#波形波形控件\ClassLibDemo\Backup\Backup\ClassLibDemo\Form1.cs

?????文件???????1365??2006-06-25?15:29??高級繪圖c#波形波形控件\ClassLibDemo\Backup\Backup\ClassLibDemo\Form1.Designer.cs

?????文件???????5814??2006-06-25?15:29??高級繪圖c#波形波形控件\ClassLibDemo\Backup\Backup\ClassLibDemo\Form1.resx

?????文件????????405??2006-06-25?15:20??高級繪圖c#波形波形控件\ClassLibDemo\Backup\Backup\ClassLibDemo\Program.cs

?????文件???????1298??2006-06-25?15:49??高級繪圖c#波形波形控件\ClassLibDemo\Backup\Backup\ClassLibDemo\Properties\AssemblyInfo.cs

?????文件???????2519??2006-06-25?15:20??高級繪圖c#波形波形控件\ClassLibDemo\Backup\Backup\ClassLibDemo\Properties\Resources.Designer.cs

?????文件???????5612??2006-06-25?15:20??高級繪圖c#波形波形控件\ClassLibDemo\Backup\Backup\ClassLibDemo\Properties\Resources.resx

?????文件???????1025??2006-06-25?15:20??高級繪圖c#波形波形控件\ClassLibDemo\Backup\Backup\ClassLibDemo\Properties\Settings.Designer.cs

?????文件????????249??2006-06-25?15:20??高級繪圖c#波形波形控件\ClassLibDemo\Backup\Backup\ClassLibDemo\Properties\Settings.settings

?????文件????????929??2006-06-25?15:21??高級繪圖c#波形波形控件\ClassLibDemo\Backup\Backup\ClassLibDemo.sln

?????文件??????21464??2017-07-05?10:17??高級繪圖c#波形波形控件\ClassLibDemo\Backup\ClassLibDemo\bin\Debug\ClassLibTest.vshost.exe

?????文件????????490??2015-10-30?15:19??高級繪圖c#波形波形控件\ClassLibDemo\Backup\ClassLibDemo\bin\Debug\ClassLibTest.vshost.exe.manifest

?????文件???????3827??2017-07-05?10:17??高級繪圖c#波形波形控件\ClassLibDemo\Backup\ClassLibDemo\ClassLibDemo.csproj

?????文件???????2001??2004-12-17?15:44??高級繪圖c#波形波形控件\ClassLibDemo\Backup\ClassLibDemo\DBGraphics.cs

?????文件???????6421??2006-06-25?15:29??高級繪圖c#波形波形控件\ClassLibDemo\Backup\ClassLibDemo\Form1.cs

?????文件???????1365??2006-06-25?15:29??高級繪圖c#波形波形控件\ClassLibDemo\Backup\ClassLibDemo\Form1.Designer.cs

?????文件???????5814??2006-06-25?15:29??高級繪圖c#波形波形控件\ClassLibDemo\Backup\ClassLibDemo\Form1.resx

?????文件????????377??2017-07-05?10:17??高級繪圖c#波形波形控件\ClassLibDemo\Backup\ClassLibDemo\obj\Debug\ClassLibDemo.csproj.FileListAbsolute.txt

?????文件????????847??2017-07-05?10:17??高級繪圖c#波形波形控件\ClassLibDemo\Backup\ClassLibDemo\obj\Debug\ClassLibDemo.csproj.GenerateResource.Cache

?????文件????????180??2017-07-05?10:17??高級繪圖c#波形波形控件\ClassLibDemo\Backup\ClassLibDemo\obj\Debug\ClassLibTest.Form1.resources

?????文件????????180??2017-07-05?10:17??高級繪圖c#波形波形控件\ClassLibDemo\Backup\ClassLibDemo\obj\Debug\ClassLibTest.Properties.Resources.resources

?????文件???????6142??2017-07-05?10:17??高級繪圖c#波形波形控件\ClassLibDemo\Backup\ClassLibDemo\obj\Debug\DesignTimeResolveAssemblyReferencesInput.cache

?????文件???????4608??2017-07-05?10:17??高級繪圖c#波形波形控件\ClassLibDemo\Backup\ClassLibDemo\obj\Debug\TempPE\Properties.Resources.Designer.cs.dll

?????文件????????405??2006-06-25?15:20??高級繪圖c#波形波形控件\ClassLibDemo\Backup\ClassLibDemo\Program.cs

?????文件???????1298??2006-06-25?15:49??高級繪圖c#波形波形控件\ClassLibDemo\Backup\ClassLibDemo\Properties\AssemblyInfo.cs

?????文件???????2864??2017-07-05?10:17??高級繪圖c#波形波形控件\ClassLibDemo\Backup\ClassLibDemo\Properties\Resources.Designer.cs

?????文件???????5612??2006-06-25?15:20??高級繪圖c#波形波形控件\ClassLibDemo\Backup\ClassLibDemo\Properties\Resources.resx

............此處省略435個文件信息