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
- MD5.cs
- DataList.cs
- xdrvalidator.cs
- WebRequestModulesSection.cs
- ToolStripTextBox.cs
- GridViewCancelEditEventArgs.cs
- BufferedOutputStream.cs
- WindowsFormsDesignerOptionService.cs
- BaseDataListComponentEditor.cs
- SmtpReplyReader.cs
- PathSegmentCollection.cs
- UniformGrid.cs
- CngKeyCreationParameters.cs
- ClientRuntimeConfig.cs
- FamilyMap.cs
- ByteStorage.cs
- RefExpr.cs
- SoapCommonClasses.cs
- Block.cs
- SocketAddress.cs
- OleDbParameter.cs
- Solver.cs
- AnnotationHelper.cs
- CharacterBufferReference.cs
- Identity.cs
- Boolean.cs
- SafeProcessHandle.cs
- WorkflowInstance.cs
- SelectionEditor.cs
- LinkArea.cs
- TaskFormBase.cs
- _ServiceNameStore.cs
- _Events.cs
- PathFigureCollection.cs
- TableItemProviderWrapper.cs
- sqlcontext.cs
- DispatcherSynchronizationContext.cs
- SchemaEntity.cs
- GraphicsContext.cs
- Hash.cs
- PassportAuthentication.cs
- DesignerActionGlyph.cs
- XamlGridLengthSerializer.cs
- HMACRIPEMD160.cs
- FontStretches.cs
- BackgroundFormatInfo.cs
- HtmlInputButton.cs
- TextBlockAutomationPeer.cs
- ExpandCollapsePattern.cs
- SectionRecord.cs
- AuthenticationManager.cs
- WebPartCollection.cs
- DtrList.cs
- MoveSizeWinEventHandler.cs
- CacheSection.cs
- PasswordDeriveBytes.cs
- MenuTracker.cs
- HashMembershipCondition.cs
- XmlSchemaExporter.cs
- WebPartConnectionCollection.cs
- OpCodes.cs
- HttpDebugHandler.cs
- ExceptionHelpers.cs
- InlineObject.cs
- ExtentKey.cs
- securitymgrsite.cs
- XmlSchemaValidationException.cs
- SQLDouble.cs
- Page.cs
- TreeNodeStyle.cs
- TargetException.cs
- ImageAutomationPeer.cs
- DockPattern.cs
- OptimizerPatterns.cs
- DataGridViewAdvancedBorderStyle.cs
- MembershipValidatePasswordEventArgs.cs
- OracleParameterCollection.cs
- Encoding.cs
- RSAProtectedConfigurationProvider.cs
- AndMessageFilter.cs
- ToolStripDropTargetManager.cs
- DataListItemCollection.cs
- EventPropertyMap.cs
- FontUnit.cs
- HitTestResult.cs
- GlyphsSerializer.cs
- AutomationAttributeInfo.cs
- WinEventWrap.cs
- XmlElementAttribute.cs
- WorkflowMessageEventHandler.cs
- CodeConditionStatement.cs
- ResourceManagerWrapper.cs
- DetailsViewRowCollection.cs
- ComPlusInstanceProvider.cs
- ResolveNameEventArgs.cs
- WebPartCancelEventArgs.cs
- TranslateTransform3D.cs
- FixedNode.cs
- DbgCompiler.cs
- DeviceSpecificChoiceCollection.cs