Code:
/ Dotnetfx_Vista_SP2 / Dotnetfx_Vista_SP2 / 8.0.50727.4016 / DEVDIV / depot / DevDiv / releases / whidbey / NetFxQFE / ndp / fx / src / Misc / GDI / WindowsBrush.cs / 1 / WindowsBrush.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- [assembly: System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Performance", "CA1811:AvoidUncalledPrivateCode", Scope="member", Target="System.Windows.Forms.Internal.WindowsBrush.FromLogBrush(System.Windows.Forms.Internal.IntNativeMethods+LOGBRUSH):System.Windows.Forms.Internal.WindowsBrush")] [assembly: System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Performance", "CA1811:AvoidUncalledPrivateCode", Scope="member", Target="System.Windows.Forms.Internal.WindowsBrush.FromHdc(System.IntPtr):System.Windows.Forms.Internal.WindowsBrush")] [assembly: System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Performance", "CA1811:AvoidUncalledPrivateCode", Scope="member", Target="System.Windows.Forms.Internal.WindowsBrush.FromBrush(System.Drawing.Brush):System.Windows.Forms.Internal.WindowsBrush")] #if WINFORMS_NAMESPACE namespace System.Windows.Forms.Internal #elif DRAWING_NAMESPACE namespace System.Drawing.Internal #else namespace System.Experimental.Gdi #endif { using System; using System.Internal; using System.Runtime.InteropServices; using System.ComponentModel; using System.Diagnostics; using System.Drawing; ////// #if WINFORMS_PUBLIC_GRAPHICS_LIBRARY public #else internal #endif abstract class WindowsBrush : MarshalByRefObject, ICloneable, IDisposable { // Handle to the native Windows brush object. // private DeviceContext dc; private IntPtr nativeHandle; // Cannot be protected because the class is internal (C# doesn't allow it). private Color color = Color.White; // GDI brushes have just one color as opposed to GDI+ that can have background color. // Note: We may need to implement background color too. #if WINGRAPHICS_FINALIZATION_WATCH private string AllocationSite = DbgUtil.StackTrace; #endif public abstract object Clone(); // Declaration required by C# even though this is an abstract class. protected abstract void CreateBrush(); ////// Encapsulates a GDI Brush object. /// ////// Parameterless constructor to use default color. /// Notice that the actual object construction is done in the derived classes. /// public WindowsBrush(DeviceContext dc) { this.dc = dc; } public WindowsBrush(DeviceContext dc, Color color) { this.dc = dc; this.color = color; } ~WindowsBrush() { Dispose(false); } protected DeviceContext DC { get { return this.dc; } } public void Dispose() { Dispose(true); } protected virtual void Dispose(bool disposing) { if (dc != null && this.nativeHandle != IntPtr.Zero) { DbgUtil.AssertFinalization(this, disposing); dc.DeleteObject(this.nativeHandle, GdiObjectType.Brush); this.nativeHandle = IntPtr.Zero; } if (disposing) { GC.SuppressFinalize(this); } } public Color Color { get { return this.color; } } ////// Gets the native Win32 brush handle. It creates it on demand. /// protected IntPtr NativeHandle { get { if( this.nativeHandle == IntPtr.Zero ) { CreateBrush(); } return this.nativeHandle; } set { Debug.Assert(this.nativeHandle == IntPtr.Zero, "WindowsBrush object is immutable"); Debug.Assert(value != IntPtr.Zero, "WARNING: assigning IntPtr.Zero to the nativeHandle object."); this.nativeHandle = value; } } #if WINFORMS_PUBLIC_GRAPHICS_LIBRARY ////// Derived classes implement this method to get a native GDI brush wrapper with the same /// properties as this object. /// public static WindowsBrush FromBrush(DeviceContext dc, Brush originalBrush) { if(originalBrush is SolidBrush) { return new WindowsSolidBrush(dc, ((SolidBrush)originalBrush).Color); } if(originalBrush is System.Drawing.Drawing2D.HatchBrush) { System.Drawing.Drawing2D.HatchBrush hatchBrush = ((System.Drawing.Drawing2D.HatchBrush)originalBrush); return new WindowsHatchBrush(dc, (WindowsHatchStyle) hatchBrush.HatchStyle, hatchBrush.ForegroundColor, hatchBrush.BackgroundColor); } /* */ Debug.Fail("Don't know how to convert this brush!"); return null; } ////// Creates a WindowsBrush from the DC currently selected HBRUSH /// public static WindowsBrush FromDC(DeviceContext dc) { IntPtr hBrush = IntUnsafeNativeMethods.GetCurrentObject(new HandleRef(null, dc.Hdc), IntNativeMethods.OBJ_BRUSH); IntNativeMethods.LOGBRUSH logBrush = new IntNativeMethods.LOGBRUSH(); IntUnsafeNativeMethods.GetObject(new HandleRef(null, hBrush), logBrush); // don't call DeleteObject on handle from GetCurrentObject, it is the one selected in the hdc. return WindowsBrush.FromLogBrush(dc, logBrush ); } ////// Creates a WindowsBrush from a LOGBRUSH. /// public static WindowsBrush FromLogBrush( DeviceContext dc, IntNativeMethods.LOGBRUSH logBrush ) { Debug.Assert( logBrush != null, "logBrush is null" ); switch( logBrush.lbStyle ) { // currently supported brushes: case IntNativeMethods.BS_HATCHED: return new WindowsHatchBrush(dc, (WindowsHatchStyle) logBrush.lbHatch ); case IntNativeMethods.BS_SOLID: return new WindowsSolidBrush( dc, Color.FromArgb(logBrush.lbColor) ); default: Debug.Fail( "Don't know how to create WindowsBrush from specified logBrush" ); return null; } } #endif ////// public IntPtr HBrush { get { return this.NativeHandle; } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. //------------------------------------------------------------------------------ ///// Returns the native Win32 brush handle. /// ///// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- [assembly: System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Performance", "CA1811:AvoidUncalledPrivateCode", Scope="member", Target="System.Windows.Forms.Internal.WindowsBrush.FromLogBrush(System.Windows.Forms.Internal.IntNativeMethods+LOGBRUSH):System.Windows.Forms.Internal.WindowsBrush")] [assembly: System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Performance", "CA1811:AvoidUncalledPrivateCode", Scope="member", Target="System.Windows.Forms.Internal.WindowsBrush.FromHdc(System.IntPtr):System.Windows.Forms.Internal.WindowsBrush")] [assembly: System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Performance", "CA1811:AvoidUncalledPrivateCode", Scope="member", Target="System.Windows.Forms.Internal.WindowsBrush.FromBrush(System.Drawing.Brush):System.Windows.Forms.Internal.WindowsBrush")] #if WINFORMS_NAMESPACE namespace System.Windows.Forms.Internal #elif DRAWING_NAMESPACE namespace System.Drawing.Internal #else namespace System.Experimental.Gdi #endif { using System; using System.Internal; using System.Runtime.InteropServices; using System.ComponentModel; using System.Diagnostics; using System.Drawing; ////// #if WINFORMS_PUBLIC_GRAPHICS_LIBRARY public #else internal #endif abstract class WindowsBrush : MarshalByRefObject, ICloneable, IDisposable { // Handle to the native Windows brush object. // private DeviceContext dc; private IntPtr nativeHandle; // Cannot be protected because the class is internal (C# doesn't allow it). private Color color = Color.White; // GDI brushes have just one color as opposed to GDI+ that can have background color. // Note: We may need to implement background color too. #if WINGRAPHICS_FINALIZATION_WATCH private string AllocationSite = DbgUtil.StackTrace; #endif public abstract object Clone(); // Declaration required by C# even though this is an abstract class. protected abstract void CreateBrush(); ////// Encapsulates a GDI Brush object. /// ////// Parameterless constructor to use default color. /// Notice that the actual object construction is done in the derived classes. /// public WindowsBrush(DeviceContext dc) { this.dc = dc; } public WindowsBrush(DeviceContext dc, Color color) { this.dc = dc; this.color = color; } ~WindowsBrush() { Dispose(false); } protected DeviceContext DC { get { return this.dc; } } public void Dispose() { Dispose(true); } protected virtual void Dispose(bool disposing) { if (dc != null && this.nativeHandle != IntPtr.Zero) { DbgUtil.AssertFinalization(this, disposing); dc.DeleteObject(this.nativeHandle, GdiObjectType.Brush); this.nativeHandle = IntPtr.Zero; } if (disposing) { GC.SuppressFinalize(this); } } public Color Color { get { return this.color; } } ////// Gets the native Win32 brush handle. It creates it on demand. /// protected IntPtr NativeHandle { get { if( this.nativeHandle == IntPtr.Zero ) { CreateBrush(); } return this.nativeHandle; } set { Debug.Assert(this.nativeHandle == IntPtr.Zero, "WindowsBrush object is immutable"); Debug.Assert(value != IntPtr.Zero, "WARNING: assigning IntPtr.Zero to the nativeHandle object."); this.nativeHandle = value; } } #if WINFORMS_PUBLIC_GRAPHICS_LIBRARY ////// Derived classes implement this method to get a native GDI brush wrapper with the same /// properties as this object. /// public static WindowsBrush FromBrush(DeviceContext dc, Brush originalBrush) { if(originalBrush is SolidBrush) { return new WindowsSolidBrush(dc, ((SolidBrush)originalBrush).Color); } if(originalBrush is System.Drawing.Drawing2D.HatchBrush) { System.Drawing.Drawing2D.HatchBrush hatchBrush = ((System.Drawing.Drawing2D.HatchBrush)originalBrush); return new WindowsHatchBrush(dc, (WindowsHatchStyle) hatchBrush.HatchStyle, hatchBrush.ForegroundColor, hatchBrush.BackgroundColor); } /* */ Debug.Fail("Don't know how to convert this brush!"); return null; } ////// Creates a WindowsBrush from the DC currently selected HBRUSH /// public static WindowsBrush FromDC(DeviceContext dc) { IntPtr hBrush = IntUnsafeNativeMethods.GetCurrentObject(new HandleRef(null, dc.Hdc), IntNativeMethods.OBJ_BRUSH); IntNativeMethods.LOGBRUSH logBrush = new IntNativeMethods.LOGBRUSH(); IntUnsafeNativeMethods.GetObject(new HandleRef(null, hBrush), logBrush); // don't call DeleteObject on handle from GetCurrentObject, it is the one selected in the hdc. return WindowsBrush.FromLogBrush(dc, logBrush ); } ////// Creates a WindowsBrush from a LOGBRUSH. /// public static WindowsBrush FromLogBrush( DeviceContext dc, IntNativeMethods.LOGBRUSH logBrush ) { Debug.Assert( logBrush != null, "logBrush is null" ); switch( logBrush.lbStyle ) { // currently supported brushes: case IntNativeMethods.BS_HATCHED: return new WindowsHatchBrush(dc, (WindowsHatchStyle) logBrush.lbHatch ); case IntNativeMethods.BS_SOLID: return new WindowsSolidBrush( dc, Color.FromArgb(logBrush.lbColor) ); default: Debug.Fail( "Don't know how to create WindowsBrush from specified logBrush" ); return null; } } #endif ////// public IntPtr HBrush { get { return this.NativeHandle; } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007./// Returns the native Win32 brush handle. /// ///
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- WorkflowInstanceAbortedRecord.cs
- FormsAuthenticationModule.cs
- BamlTreeNode.cs
- ResolveInfo.cs
- ContextMarshalException.cs
- TypeSystem.cs
- ExtensionDataObject.cs
- MsmqTransportReceiveParameters.cs
- XmlSubtreeReader.cs
- ValidationEventArgs.cs
- MetricEntry.cs
- BufferBuilder.cs
- BigInt.cs
- LateBoundBitmapDecoder.cs
- XPathMessageFilterElementCollection.cs
- DirectoryNotFoundException.cs
- OperationCanceledException.cs
- ModelFactory.cs
- UIAgentInitializationException.cs
- SimpleWebHandlerParser.cs
- KeyEvent.cs
- MSHTMLHost.cs
- EntryIndex.cs
- dataSvcMapFileLoader.cs
- RelatedEnd.cs
- Vector3DCollectionConverter.cs
- SafeThreadHandle.cs
- QueryParameter.cs
- ThemeInfoAttribute.cs
- autovalidator.cs
- SqlSelectClauseBuilder.cs
- AlternateViewCollection.cs
- HijriCalendar.cs
- MappingMetadataHelper.cs
- Types.cs
- DbBuffer.cs
- XmlDataContract.cs
- BlockCollection.cs
- MULTI_QI.cs
- UserInitiatedNavigationPermission.cs
- ProfileInfo.cs
- AttributeUsageAttribute.cs
- String.cs
- CFStream.cs
- Message.cs
- SafePEFileHandle.cs
- InternalSafeNativeMethods.cs
- DynamicResourceExtensionConverter.cs
- XmlWellformedWriter.cs
- BevelBitmapEffect.cs
- InputLanguageEventArgs.cs
- ConfigurationManager.cs
- ReadOnlyDataSource.cs
- CompareValidator.cs
- TreeNodeBinding.cs
- StringUtil.cs
- BrowserCapabilitiesCompiler.cs
- MsmqIntegrationChannelFactory.cs
- RegularExpressionValidator.cs
- HttpRequestTraceRecord.cs
- ThaiBuddhistCalendar.cs
- TypeNameConverter.cs
- ModelPerspective.cs
- OrthographicCamera.cs
- SerializationAttributes.cs
- StaticSiteMapProvider.cs
- BitmapImage.cs
- WebServiceData.cs
- SamlAction.cs
- UnsafeNativeMethods.cs
- HttpsChannelFactory.cs
- AuthenticationModeHelper.cs
- CurrentTimeZone.cs
- PeerNameRecord.cs
- MsmqIntegrationElement.cs
- Rotation3D.cs
- RelationHandler.cs
- HiddenField.cs
- ToggleButtonAutomationPeer.cs
- CompiledRegexRunner.cs
- AQNBuilder.cs
- ChannelTraceRecord.cs
- InitializerFacet.cs
- SendActivityEventArgs.cs
- RenderingEventArgs.cs
- InstanceLockException.cs
- DataGridView.cs
- PrincipalPermission.cs
- XmlNamedNodeMap.cs
- ErrorWebPart.cs
- UnmanagedMemoryStream.cs
- MessageSecurityVersionConverter.cs
- WebPartDescription.cs
- ConstraintStruct.cs
- DataGridViewColumnEventArgs.cs
- Localizer.cs
- SR.cs
- AttributedMetaModel.cs
- DesignerSerializerAttribute.cs
- XmlSchemaSimpleContentRestriction.cs