Code:
/ Dotnetfx_Vista_SP2 / Dotnetfx_Vista_SP2 / 8.0.50727.4016 / DEVDIV / depot / DevDiv / releases / whidbey / NetFxQFE / ndp / fx / src / WinForms / Managed / System / WinForms / KeyEvent.cs / 1 / KeyEvent.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- /* */ namespace System.Windows.Forms { using System.Diagnostics; using System; using System.Drawing; using System.ComponentModel; using Microsoft.Win32; using System.Diagnostics.CodeAnalysis; ////// /// [System.Runtime.InteropServices.ComVisible(true)] public class KeyEventArgs : EventArgs { ////// Provides data for the ///or /// event. /// /// /// Contains key data for KeyDown and KeyUp events. This is a combination /// of keycode and modifer flags. /// private readonly Keys keyData; ////// /// Determines if this event has been handled by a handler. If handled, the /// key event will not be sent along to Windows. If not handled, the event /// will be sent to Windows for default processing. /// private bool handled = false; ////// /// private bool suppressKeyPress = false; ////// /// public KeyEventArgs(Keys keyData) { this.keyData = keyData; } ////// Initializes a new /// instance of the ///class. /// /// /// public virtual bool Alt { get { return (keyData & Keys.Alt) == Keys.Alt; } } ////// Gets a value indicating whether the ALT key was pressed. /// ////// /// public bool Control { get { return (keyData & Keys.Control) == Keys.Control; } } ////// Gets a value indicating whether the CTRL key was pressed. /// ////// /// // public bool Handled { get { return handled; } set { handled = value; } } ////// Gets or sets a value /// indicating whether the event was handled. /// ////// /// //subhag : changed the behaviour of the KeyCode as per the new requirements. public Keys KeyCode { [ // Keys is discontiguous so we have to use Enum.IsDefined. SuppressMessage("Microsoft.Performance", "CA1803:AvoidCostlyCallsWherePossible") ] get { Keys keyGenerated = keyData & Keys.KeyCode; // since Keys can be discontiguous, keeping Enum.IsDefined. if (!Enum.IsDefined(typeof(Keys),(int)keyGenerated)) return Keys.None; else return keyGenerated; } } ////// Gets the keyboard code for a ///or /// event. /// /// /// //subhag : added the KeyValue as per the new requirements. public int KeyValue { get { return (int)(keyData & Keys.KeyCode); } } ////// Gets the keyboard value for a ///or /// event. /// /// /// public Keys KeyData { get { return keyData; } } ////// Gets the key data for a ///or /// event. /// /// /// public Keys Modifiers { get { return keyData & Keys.Modifiers; } } ////// Gets the modifier flags for a ///or event. /// This indicates which modifier keys (CTRL, SHIFT, and/or ALT) were pressed. /// /// /// public virtual bool Shift { get { return (keyData & Keys.Shift) == Keys.Shift; } } ////// Gets /// a value indicating whether the SHIFT key was pressed. /// ////// /// // public bool SuppressKeyPress { get { return suppressKeyPress; } set { suppressKeyPress = value; handled = value; } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. //------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- /* */ namespace System.Windows.Forms { using System.Diagnostics; using System; using System.Drawing; using System.ComponentModel; using Microsoft.Win32; using System.Diagnostics.CodeAnalysis; ////// /// [System.Runtime.InteropServices.ComVisible(true)] public class KeyEventArgs : EventArgs { ////// Provides data for the ///or /// event. /// /// /// Contains key data for KeyDown and KeyUp events. This is a combination /// of keycode and modifer flags. /// private readonly Keys keyData; ////// /// Determines if this event has been handled by a handler. If handled, the /// key event will not be sent along to Windows. If not handled, the event /// will be sent to Windows for default processing. /// private bool handled = false; ////// /// private bool suppressKeyPress = false; ////// /// public KeyEventArgs(Keys keyData) { this.keyData = keyData; } ////// Initializes a new /// instance of the ///class. /// /// /// public virtual bool Alt { get { return (keyData & Keys.Alt) == Keys.Alt; } } ////// Gets a value indicating whether the ALT key was pressed. /// ////// /// public bool Control { get { return (keyData & Keys.Control) == Keys.Control; } } ////// Gets a value indicating whether the CTRL key was pressed. /// ////// /// // public bool Handled { get { return handled; } set { handled = value; } } ////// Gets or sets a value /// indicating whether the event was handled. /// ////// /// //subhag : changed the behaviour of the KeyCode as per the new requirements. public Keys KeyCode { [ // Keys is discontiguous so we have to use Enum.IsDefined. SuppressMessage("Microsoft.Performance", "CA1803:AvoidCostlyCallsWherePossible") ] get { Keys keyGenerated = keyData & Keys.KeyCode; // since Keys can be discontiguous, keeping Enum.IsDefined. if (!Enum.IsDefined(typeof(Keys),(int)keyGenerated)) return Keys.None; else return keyGenerated; } } ////// Gets the keyboard code for a ///or /// event. /// /// /// //subhag : added the KeyValue as per the new requirements. public int KeyValue { get { return (int)(keyData & Keys.KeyCode); } } ////// Gets the keyboard value for a ///or /// event. /// /// /// public Keys KeyData { get { return keyData; } } ////// Gets the key data for a ///or /// event. /// /// /// public Keys Modifiers { get { return keyData & Keys.Modifiers; } } ////// Gets the modifier flags for a ///or event. /// This indicates which modifier keys (CTRL, SHIFT, and/or ALT) were pressed. /// /// /// public virtual bool Shift { get { return (keyData & Keys.Shift) == Keys.Shift; } } ////// Gets /// a value indicating whether the SHIFT key was pressed. /// ////// /// // public bool SuppressKeyPress { get { return suppressKeyPress; } set { suppressKeyPress = value; handled = value; } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
Link Menu
![Network programming in C#, Network Programming in VB.NET, Network Programming in .NET](/images/book.jpg)
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- SamlAudienceRestrictionCondition.cs
- CodeExporter.cs
- SymLanguageVendor.cs
- DBAsyncResult.cs
- CrossContextChannel.cs
- XLinq.cs
- JsonFormatWriterGenerator.cs
- MeasureItemEvent.cs
- KeyValueConfigurationCollection.cs
- EditingScope.cs
- NegotiateStream.cs
- AsymmetricKeyExchangeDeformatter.cs
- CodeGen.cs
- FileLogRecordStream.cs
- CodeIndexerExpression.cs
- InputBinder.cs
- DefaultObjectMappingItemCollection.cs
- ToolStripItemClickedEventArgs.cs
- OdbcConnection.cs
- SerialPort.cs
- HttpStreamXmlDictionaryReader.cs
- CounterCreationDataConverter.cs
- SystemFonts.cs
- ProbeMatches11.cs
- FixedLineResult.cs
- Attributes.cs
- CursorConverter.cs
- UInt64.cs
- TimeoutValidationAttribute.cs
- DetailsViewModeEventArgs.cs
- WeakReferenceList.cs
- CallId.cs
- HttpsChannelListener.cs
- OpenFileDialog.cs
- UnmanagedMarshal.cs
- SByte.cs
- DetailsView.cs
- SerializationInfoEnumerator.cs
- DbInsertCommandTree.cs
- TcpChannelHelper.cs
- DoubleLinkList.cs
- RewritingPass.cs
- UIPermission.cs
- SemanticValue.cs
- TransformValueSerializer.cs
- TreeViewAutomationPeer.cs
- XmlValidatingReaderImpl.cs
- SoapServerMethod.cs
- Size.cs
- XmlSchemaNotation.cs
- ReceiveSecurityHeaderEntry.cs
- SerialStream.cs
- PrimarySelectionGlyph.cs
- CultureInfoConverter.cs
- HttpCachePolicyBase.cs
- DesignOnlyAttribute.cs
- ProxyWebPart.cs
- OutputWindow.cs
- StorageModelBuildProvider.cs
- AnonymousIdentificationModule.cs
- ColorPalette.cs
- ProgressBar.cs
- SystemResourceHost.cs
- _ConnectStream.cs
- FontUnitConverter.cs
- RemoteWebConfigurationHostServer.cs
- FormViewInsertedEventArgs.cs
- MatrixTransform3D.cs
- CompoundFileIOPermission.cs
- VariantWrapper.cs
- AnnotationDocumentPaginator.cs
- RIPEMD160.cs
- CheckoutException.cs
- GeneratedContractType.cs
- Semaphore.cs
- GlyphTypeface.cs
- CacheChildrenQuery.cs
- LoadedOrUnloadedOperation.cs
- AssemblyBuilder.cs
- DateTimeHelper.cs
- NotCondition.cs
- Table.cs
- FilterException.cs
- RemotingServices.cs
- RequestResizeEvent.cs
- RenderDataDrawingContext.cs
- ColorBlend.cs
- Hex.cs
- List.cs
- SQLGuid.cs
- TypeDependencyAttribute.cs
- XmlMapping.cs
- WebPartZoneCollection.cs
- ContainerParagraph.cs
- WebServicesDescriptionAttribute.cs
- AutomationElementIdentifiers.cs
- Authorization.cs
- SqlInternalConnectionSmi.cs
- PointLightBase.cs
- ViewManager.cs