Code:
/ Net / Net / 3.5.50727.3053 / DEVDIV / depot / DevDiv / releases / whidbey / netfxsp / ndp / fx / src / CommonUI / System / Drawing / SolidBrush.cs / 2 / 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; ////// /// 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. /// ////// /// 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); SetNativeBrush(brush); if (color.IsSystemColor) SystemColorTracker.Add(this); } 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." ); SetNativeBrush( nativeBrush ); } ////// /// Creates an exact copy of this 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. //------------------------------------------------------------------------------ // // 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; ////// /// 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. /// ////// /// 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); SetNativeBrush(brush); if (color.IsSystemColor) SystemColorTracker.Add(this); } 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." ); SetNativeBrush( nativeBrush ); } ////// /// Creates an exact copy of this 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
- DoubleAnimationUsingPath.cs
- MetadataConversionError.cs
- CancellationHandler.cs
- PeerName.cs
- ContainsRowNumberChecker.cs
- XsdDuration.cs
- GetRecipientListRequest.cs
- HtmlInputReset.cs
- WrapperEqualityComparer.cs
- parserscommon.cs
- graph.cs
- ObjectDataSourceSelectingEventArgs.cs
- TextSpan.cs
- ManagementEventArgs.cs
- SeekStoryboard.cs
- TextRangeEditTables.cs
- XmlCharacterData.cs
- ResourceContainer.cs
- RegexGroup.cs
- RolePrincipal.cs
- XPathNodePointer.cs
- SafeNativeMethods.cs
- DbCommandDefinition.cs
- AggregateNode.cs
- VariantWrapper.cs
- DataControlField.cs
- XmlSchemaInfo.cs
- BitmapEffectGroup.cs
- Int64Animation.cs
- StateWorkerRequest.cs
- SystemEvents.cs
- Point3DValueSerializer.cs
- CoTaskMemHandle.cs
- MessageVersion.cs
- IndexOutOfRangeException.cs
- ProfilePropertySettingsCollection.cs
- URLString.cs
- SelectingProviderEventArgs.cs
- SecureUICommand.cs
- DataAdapter.cs
- ClientSponsor.cs
- ListBoxItem.cs
- XPathMultyIterator.cs
- RenderData.cs
- TypeEnumerableViewSchema.cs
- HttpApplicationStateBase.cs
- BindableAttribute.cs
- ValidationResult.cs
- _BasicClient.cs
- unsafeIndexingFilterStream.cs
- WebEvents.cs
- StrongNameMembershipCondition.cs
- SiteMapNodeItemEventArgs.cs
- ValidationError.cs
- Condition.cs
- WebPartsPersonalizationAuthorization.cs
- WindowsScroll.cs
- ProviderConnectionPoint.cs
- StorageTypeMapping.cs
- GridViewEditEventArgs.cs
- XmlJsonReader.cs
- SelectionProviderWrapper.cs
- DockProviderWrapper.cs
- Relationship.cs
- LongCountAggregationOperator.cs
- ServiceContractGenerationContext.cs
- TransferRequestHandler.cs
- TextProviderWrapper.cs
- HttpCacheVary.cs
- StorageEntityTypeMapping.cs
- CommonDialog.cs
- Ipv6Element.cs
- CurrentTimeZone.cs
- versioninfo.cs
- Converter.cs
- DbConnectionFactory.cs
- Native.cs
- RadioButtonBaseAdapter.cs
- SocketInformation.cs
- ListParagraph.cs
- TreeNodeStyle.cs
- Selection.cs
- Single.cs
- FrugalList.cs
- EmptyCollection.cs
- NodeInfo.cs
- QilReplaceVisitor.cs
- ExpressionBinding.cs
- UserPersonalizationStateInfo.cs
- FullTextLine.cs
- HwndProxyElementProvider.cs
- _AutoWebProxyScriptWrapper.cs
- MobileTemplatedControlDesigner.cs
- Mouse.cs
- SmiGettersStream.cs
- SqlError.cs
- XPathNavigatorException.cs
- storepermission.cs
- GraphicsContainer.cs
- BinaryObjectReader.cs