Code:
/ Net / Net / 3.5.50727.3053 / DEVDIV / depot / DevDiv / releases / whidbey / netfxsp / ndp / fx / src / CommonUI / System / Drawing / Brush.cs / 2 / Brush.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Drawing { using System.Runtime.InteropServices; using System.Diagnostics; using System; using System.ComponentModel; using Microsoft.Win32; using System.Drawing; using System.Drawing.Internal; using System.Globalization; /** * Represent a Brush object */ ////// /// public abstract class Brush : MarshalByRefObject, ICloneable, IDisposable { #if FINALIZATION_WATCH private string allocationSite = Graphics.GetAllocationStack(); #endif // handle to native GDI+ brush object to be used on demand. ////// Classes derrived from this abstract base class define objects used to fill the /// interiors of graphical shapes such as rectangles, ellipses, pies, polygons, and paths. /// ///private IntPtr nativeBrush; /// /// /// When overriden in a derived class, creates /// an exact copy of this public abstract object Clone(); ///. /// /// Sets the native GDI+ brush reference. /// Note: This method is intended to be used by derived classes only! (internal protected doesn't work as in C++). /// protected internal void SetNativeBrush(IntPtr brush) { Debug.Assert( brush != IntPtr.Zero, "WARNING: Assigning null to the GDI+ native brush object."); Debug.Assert( this.nativeBrush == IntPtr.Zero, "WARNING: Initialized GDI+ native brush object being assigned a new value."); this.nativeBrush = brush; } ////// Gets the GDI+ native object reference. Triggers GDI+ obect initialization. /// [Browsable(false), EditorBrowsable(EditorBrowsableState.Never)] internal IntPtr NativeBrush { get { //Need to comment this line out to allow for checking this.NativePen == IntPtr.Zero. //Debug.Assert(this.nativeBrush != IntPtr.Zero, "this.nativeBrush == null." ); return this.nativeBrush; } } ////// /// public void Dispose() { Dispose(true); GC.SuppressFinalize(this); } ////// Deletes this ///. /// protected virtual void Dispose(bool disposing) { #if FINALIZATION_WATCH if (!disposing && nativeBrush != IntPtr.Zero ) Debug.WriteLine("**********************\nDisposed through finalization:\n" + allocationSite); #endif if (this.nativeBrush != IntPtr.Zero) { try{ #if DEBUG int status = #endif SafeNativeMethods.Gdip.GdipDeleteBrush(new HandleRef(this, this.nativeBrush)); #if DEBUG Debug.Assert(status == SafeNativeMethods.Gdip.Ok, "GDI+ returned an error status: " + status.ToString(CultureInfo.InvariantCulture)); #endif } catch( Exception ex ){ if( ClientUtils.IsSecurityOrCriticalException( ex ) ) { throw; } Debug.Fail( "Exception thrown during Dispose: " + ex.ToString() ); } finally{ this.nativeBrush = IntPtr.Zero; } } } /** * Object cleanup */ /// /// /// ~Brush() { Dispose(false); } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. //------------------------------------------------------------------------------ ///// Releases memory allocated for this ///. /// // Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Drawing { using System.Runtime.InteropServices; using System.Diagnostics; using System; using System.ComponentModel; using Microsoft.Win32; using System.Drawing; using System.Drawing.Internal; using System.Globalization; /** * Represent a Brush object */ ////// /// public abstract class Brush : MarshalByRefObject, ICloneable, IDisposable { #if FINALIZATION_WATCH private string allocationSite = Graphics.GetAllocationStack(); #endif // handle to native GDI+ brush object to be used on demand. ////// Classes derrived from this abstract base class define objects used to fill the /// interiors of graphical shapes such as rectangles, ellipses, pies, polygons, and paths. /// ///private IntPtr nativeBrush; /// /// /// When overriden in a derived class, creates /// an exact copy of this public abstract object Clone(); ///. /// /// Sets the native GDI+ brush reference. /// Note: This method is intended to be used by derived classes only! (internal protected doesn't work as in C++). /// protected internal void SetNativeBrush(IntPtr brush) { Debug.Assert( brush != IntPtr.Zero, "WARNING: Assigning null to the GDI+ native brush object."); Debug.Assert( this.nativeBrush == IntPtr.Zero, "WARNING: Initialized GDI+ native brush object being assigned a new value."); this.nativeBrush = brush; } ////// Gets the GDI+ native object reference. Triggers GDI+ obect initialization. /// [Browsable(false), EditorBrowsable(EditorBrowsableState.Never)] internal IntPtr NativeBrush { get { //Need to comment this line out to allow for checking this.NativePen == IntPtr.Zero. //Debug.Assert(this.nativeBrush != IntPtr.Zero, "this.nativeBrush == null." ); return this.nativeBrush; } } ////// /// public void Dispose() { Dispose(true); GC.SuppressFinalize(this); } ////// Deletes this ///. /// protected virtual void Dispose(bool disposing) { #if FINALIZATION_WATCH if (!disposing && nativeBrush != IntPtr.Zero ) Debug.WriteLine("**********************\nDisposed through finalization:\n" + allocationSite); #endif if (this.nativeBrush != IntPtr.Zero) { try{ #if DEBUG int status = #endif SafeNativeMethods.Gdip.GdipDeleteBrush(new HandleRef(this, this.nativeBrush)); #if DEBUG Debug.Assert(status == SafeNativeMethods.Gdip.Ok, "GDI+ returned an error status: " + status.ToString(CultureInfo.InvariantCulture)); #endif } catch( Exception ex ){ if( ClientUtils.IsSecurityOrCriticalException( ex ) ) { throw; } Debug.Fail( "Exception thrown during Dispose: " + ex.ToString() ); } finally{ this.nativeBrush = IntPtr.Zero; } } } /** * Object cleanup */ /// /// /// ~Brush() { Dispose(false); } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007./// Releases memory allocated for this ///. ///
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- XmlCountingReader.cs
- SqlUnionizer.cs
- SubMenuStyleCollection.cs
- BaseTemplateBuildProvider.cs
- TouchPoint.cs
- MaterialCollection.cs
- ClientTargetCollection.cs
- ReturnValue.cs
- AnnotationComponentManager.cs
- _Rfc2616CacheValidators.cs
- GeometryHitTestParameters.cs
- SqlAliaser.cs
- DataSourceProvider.cs
- XmlNullResolver.cs
- FixedSOMImage.cs
- CodeRegionDirective.cs
- DataStreamFromComStream.cs
- AttachedPropertyBrowsableForTypeAttribute.cs
- XmlSchemaSimpleTypeUnion.cs
- XmlParserContext.cs
- DockingAttribute.cs
- Comparer.cs
- XmlnsCompatibleWithAttribute.cs
- CreateUserWizardStep.cs
- Dispatcher.cs
- HiddenFieldPageStatePersister.cs
- NativeMethodsCLR.cs
- SqlDelegatedTransaction.cs
- DelegateTypeInfo.cs
- OleDbParameter.cs
- ContentControl.cs
- PkcsMisc.cs
- ToolTipAutomationPeer.cs
- CaseInsensitiveHashCodeProvider.cs
- RelationshipWrapper.cs
- GeometryGroup.cs
- SqlEnums.cs
- AddDataControlFieldDialog.cs
- ConnectionsZone.cs
- DateTimeParse.cs
- SessionPageStateSection.cs
- GlobalProxySelection.cs
- SmtpSection.cs
- XhtmlBasicListAdapter.cs
- CollectionCodeDomSerializer.cs
- localization.cs
- XmlObjectSerializer.cs
- HttpCachePolicy.cs
- DataPagerFieldItem.cs
- CompareValidator.cs
- ZipIOZip64EndOfCentralDirectoryLocatorBlock.cs
- IgnoreSectionHandler.cs
- ManualWorkflowSchedulerService.cs
- ParameterCollection.cs
- DataFormats.cs
- RIPEMD160.cs
- SqlServer2KCompatibilityAnnotation.cs
- ConnectionStringEditor.cs
- ObjectStateEntry.cs
- PeerTransportListenAddressValidator.cs
- Wizard.cs
- ZipIOCentralDirectoryFileHeader.cs
- elementinformation.cs
- EdmValidator.cs
- WebControl.cs
- Brush.cs
- AnnotationResource.cs
- EventLogLink.cs
- CharacterMetrics.cs
- TcpChannelListener.cs
- FixedTextContainer.cs
- ProfileSettings.cs
- DataGridViewMethods.cs
- ColorBlend.cs
- HashHelper.cs
- ConfigurationManagerInternalFactory.cs
- _SSPISessionCache.cs
- GeometryDrawing.cs
- TextElementEditingBehaviorAttribute.cs
- StringBuilder.cs
- SetStoryboardSpeedRatio.cs
- ComboBoxItem.cs
- NodeLabelEditEvent.cs
- BamlTreeNode.cs
- ControlBuilderAttribute.cs
- XamlContextStack.cs
- DataPagerField.cs
- ConfigurationSchemaErrors.cs
- RoutedEvent.cs
- DeclarativeCatalogPartDesigner.cs
- OrderedDictionaryStateHelper.cs
- ContentHostHelper.cs
- Queue.cs
- WithParamAction.cs
- UIInitializationException.cs
- HwndKeyboardInputProvider.cs
- EntryPointNotFoundException.cs
- MetadataSerializer.cs
- ObjectDataSourceWizardForm.cs
- LeafCellTreeNode.cs