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 / PreviewKeyDownEventArgs.cs / 1 / PreviewKeyDownEventArgs.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Windows.Forms { using System.Diagnostics; using System.Diagnostics.CodeAnalysis; using System; ////// /// /// public class PreviewKeyDownEventArgs : EventArgs { private readonly Keys _keyData; private bool _isInputKey; ////// Provides data for the PreviewKeyDownEvent /// ////// /// public PreviewKeyDownEventArgs(Keys keyData) { _keyData = keyData; } ///[To be supplied.] ////// /// public 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. /// ////// /// //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 bool Shift { get { return (_keyData & Keys.Shift) == Keys.Shift; } } public bool IsInputKey { get { return _isInputKey; } set { _isInputKey = value; } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. //------------------------------------------------------------------------------ ///// Gets /// a value indicating whether the SHIFT key was pressed. /// ///// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Windows.Forms { using System.Diagnostics; using System.Diagnostics.CodeAnalysis; using System; ////// /// /// public class PreviewKeyDownEventArgs : EventArgs { private readonly Keys _keyData; private bool _isInputKey; ////// Provides data for the PreviewKeyDownEvent /// ////// /// public PreviewKeyDownEventArgs(Keys keyData) { _keyData = keyData; } ///[To be supplied.] ////// /// public 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. /// ////// /// //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 bool Shift { get { return (_keyData & Keys.Shift) == Keys.Shift; } } public bool IsInputKey { get { return _isInputKey; } set { _isInputKey = value; } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007./// Gets /// a value indicating whether the SHIFT key was pressed. /// ///
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- ProcessThreadCollection.cs
- FileDetails.cs
- DynamicPropertyHolder.cs
- PointConverter.cs
- CurrentTimeZone.cs
- XamlClipboardData.cs
- ManagementClass.cs
- TypeConverterValueSerializer.cs
- TraceLog.cs
- wmiprovider.cs
- EventLogPermission.cs
- ThreadAbortException.cs
- RegexCapture.cs
- ListViewVirtualItemsSelectionRangeChangedEvent.cs
- Encoding.cs
- HostingEnvironmentSection.cs
- OperationAbortedException.cs
- WindowsListViewScroll.cs
- ListItemConverter.cs
- QilNode.cs
- VersionedStream.cs
- cache.cs
- ComplexTypeEmitter.cs
- CodeDomConfigurationHandler.cs
- LineGeometry.cs
- ListViewAutomationPeer.cs
- TextBreakpoint.cs
- WrappedIUnknown.cs
- DataGridViewCellEventArgs.cs
- FormatSettings.cs
- Char.cs
- DependencyPropertyDescriptor.cs
- XmlSerializerAssemblyAttribute.cs
- documentsequencetextcontainer.cs
- SafeRightsManagementHandle.cs
- PersonalizableAttribute.cs
- MappingMetadataHelper.cs
- Listbox.cs
- DoubleLinkList.cs
- SocketPermission.cs
- WindowsSecurityToken.cs
- DoubleLinkListEnumerator.cs
- _NegoStream.cs
- ToolTipAutomationPeer.cs
- MsmqNonTransactedPoisonHandler.cs
- BamlTreeUpdater.cs
- LocalizableResourceBuilder.cs
- SingleConverter.cs
- MobileFormsAuthentication.cs
- SqlServer2KCompatibilityCheck.cs
- FlowDocumentPaginator.cs
- XsdValidatingReader.cs
- CacheVirtualItemsEvent.cs
- WarningException.cs
- OracleDataAdapter.cs
- ObjectItemAttributeAssemblyLoader.cs
- EntityClassGenerator.cs
- XmlLoader.cs
- FileDetails.cs
- LeaseManager.cs
- safesecurityhelperavalon.cs
- ProgressBarAutomationPeer.cs
- TextTreeUndoUnit.cs
- HttpResponseWrapper.cs
- SortedDictionary.cs
- _ProxyChain.cs
- PolygonHotSpot.cs
- SimpleLine.cs
- NullReferenceException.cs
- RequestQueryParser.cs
- HyperLinkField.cs
- LabelLiteral.cs
- ClientSettingsStore.cs
- EntityDataSourceSelectedEventArgs.cs
- HasCopySemanticsAttribute.cs
- SID.cs
- RadioButton.cs
- CompositeCollectionView.cs
- OpCodes.cs
- CustomValidator.cs
- CodeCompileUnit.cs
- DataShape.cs
- AffineTransform3D.cs
- TextPatternIdentifiers.cs
- CompilerCollection.cs
- PropertyMapper.cs
- WebPartTransformer.cs
- MouseGestureValueSerializer.cs
- HttpListenerPrefixCollection.cs
- TableParagraph.cs
- StaticFileHandler.cs
- UDPClient.cs
- ManipulationInertiaStartingEventArgs.cs
- DataView.cs
- KoreanCalendar.cs
- TextEditorThreadLocalStore.cs
- HtmlInputFile.cs
- NativeMethods.cs
- CallbackHandler.cs
- RTTypeWrapper.cs