Code:
/ FX-1434 / FX-1434 / 1.0 / untmp / whidbey / REDBITS / ndp / fx / src / WinForms / Managed / System / WinForms / ApplicationContext.cs / 1 / ApplicationContext.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Windows.Forms { using System; using System.Diagnostics; using System.ComponentModel; ////// /// ApplicationContext provides contextual information about an application /// thread. Specifically this allows an application author to redifine what /// circurmstances cause a message loop to exit. By default the application /// context listens to the close event on the mainForm, then exits the /// thread's message loop. /// public class ApplicationContext : IDisposable { Form mainForm; object userData; ////// /// Creates a new ApplicationContext with no mainForm. /// public ApplicationContext() : this(null) { } ////// /// Creates a new ApplicationContext with the specified mainForm. /// If OnMainFormClosed is not overriden, the thread's message /// loop will be terminated when mainForm is closed. /// public ApplicationContext(Form mainForm) { this.MainForm = mainForm; } ///~ApplicationContext() { Dispose(false); } /// /// /// Determines the mainForm for this context. This may be changed /// at anytime. /// If OnMainFormClosed is not overriden, the thread's message /// loop will be terminated when mainForm is closed. /// public Form MainForm { get { return mainForm; } set { EventHandler onClose = new EventHandler(OnMainFormDestroy); if (mainForm != null) { mainForm.HandleDestroyed -= onClose; } mainForm = value; if (mainForm != null) { mainForm.HandleDestroyed += onClose; } } } ///[ SRCategory(SR.CatData), Localizable(false), Bindable(true), SRDescription(SR.ControlTagDescr), DefaultValue(null), TypeConverter(typeof(StringConverter)), ] public object Tag { get { return userData; } set { userData = value; } } /// /// /// Is raised when the thread's message loop should be terminated. /// This is raised by calling ExitThread. /// public event EventHandler ThreadExit; ////// /// Disposes the context. This should dispose the mainForm. This is /// called immediately after the thread's message loop is terminated. /// Application will dispose all forms on this thread by default. /// public void Dispose() { Dispose(true); GC.SuppressFinalize(this); } ///protected virtual void Dispose(bool disposing) { if (disposing) { if (mainForm != null) { if (!mainForm.IsDisposed) { mainForm.Dispose(); } mainForm = null; } } } /// /// /// Causes the thread's message loop to be terminated. This /// will call ExitThreadCore. /// public void ExitThread() { ExitThreadCore(); } ////// /// Causes the thread's message loop to be terminated. /// protected virtual void ExitThreadCore() { if (ThreadExit != null) { ThreadExit(this, EventArgs.Empty); } } ////// /// Called when the mainForm is closed. The default implementation /// of this will call ExitThreadCore. /// protected virtual void OnMainFormClosed(object sender, EventArgs e) { ExitThreadCore(); } ////// Called when the mainForm is closed. The default implementation /// of this will call ExitThreadCore. /// private void OnMainFormDestroy(object sender, EventArgs e) { Form form = (Form)sender; if (!form.RecreatingHandle) { form.HandleDestroyed -= new EventHandler(OnMainFormDestroy); OnMainFormClosed(sender, e); } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- SchemaElement.cs
- HwndSourceKeyboardInputSite.cs
- CodeAttributeDeclaration.cs
- ObjectDataSourceSelectingEventArgs.cs
- TextTreeTextBlock.cs
- XmlComplianceUtil.cs
- OLEDB_Util.cs
- ImageSourceValueSerializer.cs
- TdsParserStaticMethods.cs
- ServiceHostFactory.cs
- PrinterUnitConvert.cs
- SqlError.cs
- ExponentialEase.cs
- Pair.cs
- CapacityStreamGeometryContext.cs
- TextSelection.cs
- DocumentXmlWriter.cs
- HostedHttpRequestAsyncResult.cs
- SecurityContextSecurityTokenResolver.cs
- DescendantBaseQuery.cs
- XPathBinder.cs
- FormattedTextSymbols.cs
- ItemType.cs
- HtmlEmptyTagControlBuilder.cs
- CryptoStream.cs
- DoubleAnimationUsingKeyFrames.cs
- ScalarRestriction.cs
- StreamGeometryContext.cs
- RoleManagerModule.cs
- BadImageFormatException.cs
- ApplicationDirectory.cs
- VisualStyleTypesAndProperties.cs
- Wizard.cs
- AnnotationDocumentPaginator.cs
- XmlLoader.cs
- ThemeDictionaryExtension.cs
- sqlmetadatafactory.cs
- SpecialNameAttribute.cs
- BitmapEditor.cs
- AsymmetricKeyExchangeDeformatter.cs
- PatternMatchRules.cs
- ExecutedRoutedEventArgs.cs
- DiagnosticsConfigurationHandler.cs
- OleDbConnection.cs
- RawStylusInputCustomData.cs
- BamlResourceContent.cs
- ErrorFormatterPage.cs
- InstancePersistenceEvent.cs
- SapiRecognizer.cs
- CompilerParameters.cs
- RadioButtonPopupAdapter.cs
- EntityKey.cs
- TextPattern.cs
- SessionPageStateSection.cs
- PerspectiveCamera.cs
- TextBox.cs
- MsmqException.cs
- RegionInfo.cs
- AttributeTable.cs
- IOException.cs
- InfoCardKeyedHashAlgorithm.cs
- AutomationPattern.cs
- IncrementalReadDecoders.cs
- SHA512.cs
- PreviewPageInfo.cs
- Translator.cs
- DeferrableContentConverter.cs
- ThemeableAttribute.cs
- StandardCommands.cs
- SqlNotificationRequest.cs
- HtmlSelectionListAdapter.cs
- MarkupCompilePass2.cs
- DataRecordInternal.cs
- InvalidDataException.cs
- DetailsViewCommandEventArgs.cs
- StringDictionary.cs
- CodeIndexerExpression.cs
- ActiveXSite.cs
- WindowsHyperlink.cs
- WebPartZoneBase.cs
- SpotLight.cs
- log.cs
- ValidationEventArgs.cs
- Rect.cs
- XmlReaderSettings.cs
- BaseParagraph.cs
- ExtentKey.cs
- PreviewKeyDownEventArgs.cs
- Size.cs
- WebException.cs
- TextServicesCompartmentContext.cs
- PermissionSet.cs
- UIElement3DAutomationPeer.cs
- DriveInfo.cs
- WSFederationHttpSecurityElement.cs
- WebPartCatalogCloseVerb.cs
- BackoffTimeoutHelper.cs
- WindowsAuthenticationModule.cs
- TemplateBindingExpressionConverter.cs
- SafeArrayRankMismatchException.cs