Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / CommonUI / System / Drawing / SolidBrush.cs / 1305376 / SolidBrush.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Drawing { using System.Runtime.InteropServices; using System.Diagnostics; using System; using Microsoft.Win32; using System.ComponentModel; using System.Drawing.Internal; using System.Runtime.Versioning; ////// /// public sealed class SolidBrush : Brush, ISystemColorTracker { // GDI+ doesn't understand system colors, so we need to cache the value here private Color color = Color.Empty; private bool immutable; /** * Create a new solid fill brush object */ ////// Defines a brush made up of a single color. Brushes are /// used to fill graphics shapes such as rectangles, ellipses, pies, polygons, and paths. /// ////// /// [ResourceExposure(ResourceScope.Process)] [ResourceConsumption(ResourceScope.Process)] public SolidBrush(Color color) { this.color = color; IntPtr brush = IntPtr.Zero; int status = SafeNativeMethods.Gdip.GdipCreateSolidFill(this.color.ToArgb(), out brush); if (status != SafeNativeMethods.Gdip.Ok) throw SafeNativeMethods.Gdip.StatusException(status); SetNativeBrushInternal(brush); if (color.IsSystemColor) SystemColorTracker.Add(this); } [ResourceExposure(ResourceScope.Process)] [ResourceConsumption(ResourceScope.Process)] internal SolidBrush(Color color, bool immutable) : this(color) { this.immutable = immutable; } ////// Initializes a new instance of the ///class of the specified /// color. /// /// Constructor to initialized this object from a GDI+ Brush native pointer. /// internal SolidBrush( IntPtr nativeBrush ) { Debug.Assert( nativeBrush != IntPtr.Zero, "Initializing native brush with null." ); SetNativeBrushInternal( nativeBrush ); } ////// /// Creates an exact copy of this [ResourceExposure(ResourceScope.Process)] [ResourceConsumption(ResourceScope.Process)] public override object Clone() { IntPtr cloneBrush = IntPtr.Zero; int status = SafeNativeMethods.Gdip.GdipCloneBrush(new HandleRef(this, this.NativeBrush), out cloneBrush); if (status != SafeNativeMethods.Gdip.Ok) throw SafeNativeMethods.Gdip.StatusException(status); // We intentionally lose the "immutable" bit. return new SolidBrush(cloneBrush); } ///. /// protected override void Dispose(bool disposing) { if (!disposing) { immutable = false; } else if (immutable) { throw new ArgumentException(SR.GetString(SR.CantChangeImmutableObjects, "Brush")); } base.Dispose(disposing); } /// /// /// public Color Color { get { if (this.color == Color.Empty) { int colorARGB = 0; int status = SafeNativeMethods.Gdip.GdipGetSolidFillColor(new HandleRef(this, this.NativeBrush), out colorARGB); if (status != SafeNativeMethods.Gdip.Ok) throw SafeNativeMethods.Gdip.StatusException(status); this.color = Color.FromArgb(colorARGB); } // GDI+ doesn't understand system colors, so we can't use GdipGetSolidFillColor in the general case return this.color; } set { if (immutable) { throw new ArgumentException(SR.GetString(SR.CantChangeImmutableObjects, "Brush")); } if( this.color != value ) { Color oldColor = this.color; InternalSetColor(value); // if (value.IsSystemColor && !oldColor.IsSystemColor) { SystemColorTracker.Add(this); } } } } // Sets the color even if the brush is considered immutable private void InternalSetColor(Color value) { int status = SafeNativeMethods.Gdip.GdipSetSolidFillColor(new HandleRef(this, this.NativeBrush), value.ToArgb()); if (status != SafeNativeMethods.Gdip.Ok) throw SafeNativeMethods.Gdip.StatusException(status); this.color = value; } ////// The color of this ///. /// /// void ISystemColorTracker.OnSystemColorChanged() { if( this.NativeBrush != IntPtr.Zero ){ InternalSetColor(color); } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- TranslateTransform3D.cs
- BamlResourceDeserializer.cs
- DataSvcMapFile.cs
- ClientProxyGenerator.cs
- PersonalizationEntry.cs
- IEnumerable.cs
- TagNameToTypeMapper.cs
- ClientCultureInfo.cs
- XmlCountingReader.cs
- Ipv6Element.cs
- PropertyEntry.cs
- ContextMenuStrip.cs
- DrawingContextWalker.cs
- LicenseManager.cs
- SqlConnection.cs
- SocketInformation.cs
- ComEventsSink.cs
- Operator.cs
- ToolStripHighContrastRenderer.cs
- objectresult_tresulttype.cs
- XD.cs
- TypeLibConverter.cs
- DockPattern.cs
- BitmapDecoder.cs
- DragEventArgs.cs
- TextEditorSpelling.cs
- Boolean.cs
- UpdateCommand.cs
- DebugView.cs
- PromptStyle.cs
- _FtpDataStream.cs
- WebPartVerbsEventArgs.cs
- AsyncOperation.cs
- ChangeNode.cs
- RegisteredScript.cs
- SessionPageStateSection.cs
- SourceInterpreter.cs
- DrawingContextDrawingContextWalker.cs
- OracleTimeSpan.cs
- ScrollableControl.cs
- FrameworkElement.cs
- SHA384Managed.cs
- ListViewSelectEventArgs.cs
- OneWayChannelFactory.cs
- DoubleAnimationUsingPath.cs
- TagNameToTypeMapper.cs
- DataObject.cs
- FieldNameLookup.cs
- MailAddressParser.cs
- ComplexType.cs
- JsonByteArrayDataContract.cs
- CryptoApi.cs
- HttpRequestCacheValidator.cs
- RemotingConfigParser.cs
- ImagingCache.cs
- HtmlGenericControl.cs
- FontFamilyValueSerializer.cs
- VectorAnimationBase.cs
- webclient.cs
- MemoryFailPoint.cs
- XamlPointCollectionSerializer.cs
- _HelperAsyncResults.cs
- Qualifier.cs
- BasicBrowserDialog.designer.cs
- Wizard.cs
- SchemaElement.cs
- ToolStripItemBehavior.cs
- ProxySimple.cs
- LocalClientSecuritySettingsElement.cs
- ProviderSettings.cs
- ExpressionNode.cs
- SqlInternalConnection.cs
- CaseExpr.cs
- OwnerDrawPropertyBag.cs
- XmlDownloadManager.cs
- XmlSchemaSimpleTypeUnion.cs
- TimeoutConverter.cs
- HttpModulesSection.cs
- ExternalCalls.cs
- Geometry.cs
- BinaryObjectReader.cs
- SurrogateEncoder.cs
- RandomNumberGenerator.cs
- QuotedPairReader.cs
- InstalledVoice.cs
- SafeCryptContextHandle.cs
- XappLauncher.cs
- PrivilegedConfigurationManager.cs
- NativeMethodsCLR.cs
- QueueException.cs
- PropertyRecord.cs
- EdmPropertyAttribute.cs
- AmbientLight.cs
- RemoteWebConfigurationHost.cs
- CacheForPrimitiveTypes.cs
- Shared.cs
- WindowsToolbarItemAsMenuItem.cs
- MenuDesigner.cs
- SecurityCookieModeValidator.cs
- OperationFormatStyle.cs