Code:
/ DotNET / DotNET / 8.0 / 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
- HandleExceptionArgs.cs
- TextLineResult.cs
- EntityDataSource.cs
- DataGridTextBox.cs
- FacetDescription.cs
- BrowserCapabilitiesCodeGenerator.cs
- WCFModelStrings.Designer.cs
- DataViewManager.cs
- ServiceModelConfiguration.cs
- IncrementalReadDecoders.cs
- TreeChangeInfo.cs
- BrowserCapabilitiesFactory.cs
- basemetadatamappingvisitor.cs
- X509SecurityTokenProvider.cs
- HtmlElementErrorEventArgs.cs
- WSAddressing10ProblemHeaderQNameFault.cs
- XPathSelfQuery.cs
- XmlLinkedNode.cs
- EventDescriptorCollection.cs
- QualifiedCellIdBoolean.cs
- WindowsToolbar.cs
- NoneExcludedImageIndexConverter.cs
- XmlSchemaComplexContentRestriction.cs
- BatchServiceHost.cs
- RemotingSurrogateSelector.cs
- XmlDictionaryReader.cs
- IgnoreFlushAndCloseStream.cs
- ExpressionBuilder.cs
- ObjectStateEntry.cs
- SystemIPInterfaceProperties.cs
- DataMemberConverter.cs
- TextureBrush.cs
- SmiXetterAccessMap.cs
- ApplyTemplatesAction.cs
- BitmapEffect.cs
- ListItem.cs
- RegionData.cs
- ConstraintCollection.cs
- _NestedMultipleAsyncResult.cs
- TrackingLocationCollection.cs
- securestring.cs
- DataGridViewBindingCompleteEventArgs.cs
- Vector3DAnimation.cs
- TextEndOfParagraph.cs
- RSAOAEPKeyExchangeFormatter.cs
- StringFunctions.cs
- Exceptions.cs
- XmlLangPropertyAttribute.cs
- EventSinkHelperWriter.cs
- AutomationPropertyInfo.cs
- TableAutomationPeer.cs
- InputProviderSite.cs
- FragmentQueryProcessor.cs
- Popup.cs
- DesignerVerb.cs
- CollectionViewGroupInternal.cs
- XmlEntityReference.cs
- ContentHostHelper.cs
- VectorAnimationBase.cs
- MenuItem.cs
- OutputWindow.cs
- MailWebEventProvider.cs
- RelationshipEndCollection.cs
- Math.cs
- InputChannelBinder.cs
- BitmapScalingModeValidation.cs
- ColumnMapVisitor.cs
- DataGridColumnDropSeparator.cs
- MouseDevice.cs
- Schedule.cs
- SmtpSpecifiedPickupDirectoryElement.cs
- SponsorHelper.cs
- ConvertEvent.cs
- ZipIOCentralDirectoryFileHeader.cs
- HttpResponse.cs
- DoubleConverter.cs
- SelectiveScrollingGrid.cs
- DataColumnMapping.cs
- SmiMetaData.cs
- CoTaskMemSafeHandle.cs
- LinkedResource.cs
- BindingCompleteEventArgs.cs
- AddInAdapter.cs
- DotAtomReader.cs
- DrawItemEvent.cs
- GZipDecoder.cs
- XmlAttributes.cs
- DateTimeUtil.cs
- DataBindingHandlerAttribute.cs
- CfgParser.cs
- DocumentCollection.cs
- ObjectContextServiceProvider.cs
- Model3D.cs
- COM2FontConverter.cs
- Odbc32.cs
- Reference.cs
- DataGridViewRowsAddedEventArgs.cs
- Trustee.cs
- GridViewSortEventArgs.cs
- DeviceContext2.cs