Code:
/ Dotnetfx_Win7_3.5.1 / Dotnetfx_Win7_3.5.1 / 3.5.1 / DEVDIV / depot / DevDiv / releases / whidbey / NetFXspW7 / 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
- XmlCharType.cs
- AspNetSynchronizationContext.cs
- Normalizer.cs
- FunctionUpdateCommand.cs
- UnionExpr.cs
- XomlCompilerParameters.cs
- HeaderUtility.cs
- SystemNetHelpers.cs
- TextServicesCompartmentContext.cs
- OleDbException.cs
- ADMembershipUser.cs
- WriteFileContext.cs
- FilterableAttribute.cs
- RegexParser.cs
- StreamGeometry.cs
- OrElse.cs
- ListViewInsertionMark.cs
- RenderDataDrawingContext.cs
- XmlText.cs
- ItemCollection.cs
- XmlEncodedRawTextWriter.cs
- LostFocusEventManager.cs
- SafeRightsManagementSessionHandle.cs
- ClrProviderManifest.cs
- ElementHostAutomationPeer.cs
- PrintControllerWithStatusDialog.cs
- OpenFileDialog.cs
- EUCJPEncoding.cs
- XmlReturnReader.cs
- WriteTimeStream.cs
- HtmlToClrEventProxy.cs
- ExpressionBuilder.cs
- SoapParser.cs
- SqlDataSourceDesigner.cs
- SystemIcmpV6Statistics.cs
- SymLanguageVendor.cs
- BindingOperations.cs
- SafeViewOfFileHandle.cs
- EntityViewContainer.cs
- DataTableClearEvent.cs
- ActiveDesignSurfaceEvent.cs
- ArgumentOutOfRangeException.cs
- filewebrequest.cs
- XmlText.cs
- HttpInputStream.cs
- Region.cs
- DiscoveryDocumentSearchPattern.cs
- HttpConfigurationContext.cs
- Facet.cs
- DockAndAnchorLayout.cs
- Int64AnimationBase.cs
- IUnknownConstantAttribute.cs
- DataGridViewRowPostPaintEventArgs.cs
- EventHandlingScope.cs
- PersistChildrenAttribute.cs
- AttributeQuery.cs
- UserControl.cs
- SevenBitStream.cs
- DetailsViewInsertEventArgs.cs
- VisualTreeHelper.cs
- BStrWrapper.cs
- SafeLibraryHandle.cs
- DisableDpiAwarenessAttribute.cs
- HMACSHA512.cs
- PackageRelationship.cs
- GridViewPageEventArgs.cs
- Rule.cs
- SqlCommandBuilder.cs
- GridViewDeletedEventArgs.cs
- SqlCommandSet.cs
- DrawingServices.cs
- XNodeNavigator.cs
- KeyedCollection.cs
- SortDescription.cs
- ConfigurationValues.cs
- BlockCollection.cs
- CodeAttributeDeclarationCollection.cs
- UnmanagedMemoryStreamWrapper.cs
- RSAOAEPKeyExchangeDeformatter.cs
- ComboBoxAutomationPeer.cs
- WindowsEditBoxRange.cs
- XamlTreeBuilderBamlRecordWriter.cs
- ParseNumbers.cs
- AdRotator.cs
- TextDecorationCollection.cs
- FixedSOMPage.cs
- ChangeDirector.cs
- FocusChangedEventArgs.cs
- LineServicesCallbacks.cs
- Preprocessor.cs
- Bidi.cs
- DataRowChangeEvent.cs
- SchemaHelper.cs
- RelationshipNavigation.cs
- ObfuscationAttribute.cs
- Style.cs
- HwndMouseInputProvider.cs
- RadialGradientBrush.cs
- DesignBindingPicker.cs
- XmlSchemaComplexType.cs