Code:
/ DotNET / DotNET / 8.0 / untmp / WIN_WINDOWS / lh_tools_devdiv_wpf / Windows / wcp / Core / System / Windows / FontWeightConverter.cs / 1 / FontWeightConverter.cs
//---------------------------------------------------------------------------- // // Copyright (c) Microsoft Corporation. All rights reserved. // // Description: FontWeight type converter. // // History: // 01/25/2005 [....] - Created. // //--------------------------------------------------------------------------- using System; using System.IO; using System.ComponentModel; using System.ComponentModel.Design.Serialization; using System.Reflection; using MS.Internal; using System.Windows.Media; using System.Text; using System.Collections; using System.Globalization; using System.Runtime.InteropServices; using System.Security; using SR=MS.Internal.PresentationCore.SR; using SRID=MS.Internal.PresentationCore.SRID; namespace System.Windows { ////// FontWeightConverter class parses a font weight string. /// public sealed class FontWeightConverter : TypeConverter { ////// CanConvertFrom /// public override bool CanConvertFrom(ITypeDescriptorContext td, Type t) { if (t == typeof(string)) { return true; } else { return false; } } ////// TypeConverter method override. /// /// ITypeDescriptorContext /// Type to convert to ///true if conversion is possible public override bool CanConvertTo(ITypeDescriptorContext context, Type destinationType) { if (destinationType == typeof(InstanceDescriptor) || destinationType == typeof(string)) { return true; } return base.CanConvertTo(context, destinationType); } ////// ConvertFrom - attempt to convert to a FontWeight from the given object /// ////// A NotSupportedException is thrown if the example object is null or is not a valid type /// which can be converted to a FontWeight. /// public override object ConvertFrom(ITypeDescriptorContext td, CultureInfo ci, object value) { if (null == value) { throw GetConvertFromException(value); } String s = value as string; if (null == s) { throw new ArgumentException(SR.Get(SRID.General_BadType, "ConvertFrom"), "value"); } FontWeight fontWeight = new FontWeight(); if (!FontWeights.FontWeightStringToKnownWeight(s, ci, ref fontWeight)) throw new FormatException(SR.Get(SRID.Parsers_IllegalToken)); return fontWeight; } ////// TypeConverter method implementation. /// ////// An NotSupportedException is thrown if the example object is null or is not a FontWeight, /// or if the destinationType isn't one of the valid destination types. /// /// ITypeDescriptorContext /// current culture (see CLR specs) /// value to convert from /// Type to convert to ///converted value ////// Critical: calls InstanceDescriptor ctor which LinkDemands /// PublicOK: can only make an InstanceDescriptor for FontWeight, not an arbitrary class /// [SecurityCritical] public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType) { if (destinationType != null && value is FontWeight) { if (destinationType == typeof(InstanceDescriptor)) { MethodInfo mi = typeof(FontWeight).GetMethod("FromOpenTypeWeight", new Type[]{typeof(int)}); FontWeight c = (FontWeight)value; return new InstanceDescriptor(mi, new object[]{c.ToOpenTypeWeight()}); } else if (destinationType == typeof(string)) { FontWeight c = (FontWeight)value; return ((IFormattable)c).ToString(null, culture); } } // Pass unhandled cases to base class (which will throw exceptions for null value or destinationType.) return base.ConvertTo(context, culture, value, destinationType); } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- SystemIPGlobalStatistics.cs
- ConditionCollection.cs
- DecimalFormatter.cs
- WinInet.cs
- LifetimeServices.cs
- TextElementEnumerator.cs
- DataGridTablesFactory.cs
- MasterPage.cs
- TabPage.cs
- CallbackHandler.cs
- AdapterUtil.cs
- WorkflowWebHostingModule.cs
- InkSerializer.cs
- SQLMoney.cs
- Renderer.cs
- SmtpSpecifiedPickupDirectoryElement.cs
- RichTextBoxAutomationPeer.cs
- ControlCollection.cs
- ModifiableIteratorCollection.cs
- FixedPageStructure.cs
- IntegerFacetDescriptionElement.cs
- DispatchOperation.cs
- FontNamesConverter.cs
- TraceProvider.cs
- DataViewSettingCollection.cs
- WSDualHttpSecurityElement.cs
- GeometryConverter.cs
- EventListenerClientSide.cs
- OwnerDrawPropertyBag.cs
- ChtmlSelectionListAdapter.cs
- XmlDocument.cs
- OleDbInfoMessageEvent.cs
- SmiMetaDataProperty.cs
- DataSourceHelper.cs
- MDIClient.cs
- SmiEventStream.cs
- BinaryNode.cs
- LicenseContext.cs
- SoapMessage.cs
- EventMappingSettingsCollection.cs
- PointLightBase.cs
- ToolBar.cs
- TraceRecords.cs
- Invariant.cs
- SessionEndedEventArgs.cs
- StylusButtonEventArgs.cs
- Executor.cs
- DbConnectionPoolGroupProviderInfo.cs
- MyContact.cs
- AssemblyBuilder.cs
- CodePropertyReferenceExpression.cs
- DbConnectionFactory.cs
- ZeroOpNode.cs
- Vector3DAnimationBase.cs
- ResourcePart.cs
- MD5.cs
- ParameterCollection.cs
- HitTestDrawingContextWalker.cs
- ContextActivityUtils.cs
- ThumbAutomationPeer.cs
- ListView.cs
- ApplicationSecurityInfo.cs
- RightsManagementEncryptedStream.cs
- SqlTypeSystemProvider.cs
- ServiceModelConfigurationSectionGroup.cs
- SharedPersonalizationStateInfo.cs
- ColorAnimationUsingKeyFrames.cs
- Behavior.cs
- OutputCacheProfile.cs
- UInt64Storage.cs
- PersonalizationDictionary.cs
- DataColumnMappingCollection.cs
- FrugalMap.cs
- TcpTransportManager.cs
- SharedMemory.cs
- UrlAuthFailedErrorFormatter.cs
- AlphaSortedEnumConverter.cs
- LockRecursionException.cs
- CompilerParameters.cs
- TimeStampChecker.cs
- BooleanConverter.cs
- NumberFormatInfo.cs
- SqlUtils.cs
- MapPathBasedVirtualPathProvider.cs
- OracleBFile.cs
- CustomPopupPlacement.cs
- NativeCppClassAttribute.cs
- TextEditorCharacters.cs
- XmlSerializer.cs
- XmlDataSourceView.cs
- AsyncCodeActivity.cs
- RuleEngine.cs
- Scene3D.cs
- UpdatePanelControlTrigger.cs
- URIFormatException.cs
- NumericPagerField.cs
- StylusPointPropertyInfoDefaults.cs
- XmlDocumentSchema.cs
- TypefaceCollection.cs
- AuthenticationServiceManager.cs