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
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- CustomLineCap.cs
- TrimSurroundingWhitespaceAttribute.cs
- EncodingInfo.cs
- MimeBasePart.cs
- TextEmbeddedObject.cs
- CustomLineCap.cs
- CustomWebEventKey.cs
- CodeBlockBuilder.cs
- BinHexDecoder.cs
- DatasetMethodGenerator.cs
- Vector3DAnimationUsingKeyFrames.cs
- SelectionItemProviderWrapper.cs
- Blend.cs
- TablePattern.cs
- SelectorAutomationPeer.cs
- BinaryObjectReader.cs
- Pair.cs
- VectorAnimation.cs
- LocalizabilityAttribute.cs
- OdbcReferenceCollection.cs
- ByteStreamMessageEncodingElement.cs
- ListViewTableCell.cs
- BrowserCapabilitiesCompiler.cs
- DateTimeConverter.cs
- WebDescriptionAttribute.cs
- ChildDocumentBlock.cs
- AnimatedTypeHelpers.cs
- DataViewSettingCollection.cs
- ObjectContext.cs
- _HeaderInfoTable.cs
- TCPListener.cs
- LoginViewDesigner.cs
- UdpUtility.cs
- InProcStateClientManager.cs
- ErrorRuntimeConfig.cs
- UnknownBitmapEncoder.cs
- MergeLocalizationDirectives.cs
- MembershipSection.cs
- ObjectParameterCollection.cs
- InheritanceContextHelper.cs
- XmlSchemaSet.cs
- ResourceManagerWrapper.cs
- CancellationHandler.cs
- PromptEventArgs.cs
- UpdateRecord.cs
- HttpInputStream.cs
- TemplateBaseAction.cs
- ExclusiveCanonicalizationTransform.cs
- NativeCompoundFileAPIs.cs
- ManifestResourceInfo.cs
- XDeferredAxisSource.cs
- MSG.cs
- NameNode.cs
- SessionStateModule.cs
- BuildDependencySet.cs
- HtmlImage.cs
- SystemThemeKey.cs
- TraceData.cs
- ListDictionaryInternal.cs
- HwndSubclass.cs
- RetrieveVirtualItemEventArgs.cs
- VBIdentifierName.cs
- UIPropertyMetadata.cs
- ConnectionStringsSection.cs
- BrushConverter.cs
- DeflateStream.cs
- XmlAttributeCollection.cs
- ProfilePropertySettings.cs
- ColorEditor.cs
- SliderAutomationPeer.cs
- DesignerDataTableBase.cs
- GridItemPattern.cs
- XmlSchemaFacet.cs
- XmlAtomicValue.cs
- DesignerAttribute.cs
- BulletedListEventArgs.cs
- EdmType.cs
- SoapFormatter.cs
- PixelShader.cs
- XmlComment.cs
- DynamicPropertyReader.cs
- BaseTemplateBuildProvider.cs
- VisualStyleInformation.cs
- PaperSize.cs
- NativeObjectSecurity.cs
- StylusButtonEventArgs.cs
- WebServiceMethodData.cs
- Win32.cs
- SafePointer.cs
- ByteConverter.cs
- XmlArrayAttribute.cs
- DataServiceConfiguration.cs
- WinFormsSecurity.cs
- PresentationAppDomainManager.cs
- UrlAuthorizationModule.cs
- EntityCollection.cs
- ClientRuntimeConfig.cs
- ConstrainedDataObject.cs
- ByValueEqualityComparer.cs
- BindToObject.cs