Code:
/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / Sys / System / Media / SystemSounds.cs / 1 / SystemSounds.cs
using System; using System.ComponentModel; using System.Diagnostics.CodeAnalysis; using System.Runtime.InteropServices; using System.Security.Permissions; namespace System.Media { ///[HostProtection(UI = true)] public sealed class SystemSounds { static SystemSound asterisk; static SystemSound beep; static SystemSound exclamation; static SystemSound hand; static SystemSound question; private SystemSounds() { } /// public static SystemSound Asterisk { get { if (asterisk == null) { asterisk = new SystemSound(NativeMethods.MB_ICONASTERISK); } return asterisk; } } /// public static SystemSound Beep { get { if (beep == null) { beep = new SystemSound(0); } return beep; } } /// public static SystemSound Exclamation { get { if (exclamation == null) { exclamation = new SystemSound(NativeMethods.MB_ICONEXCLAMATION); } return exclamation; } } /// public static SystemSound Hand { get { if (hand == null) { hand = new SystemSound(NativeMethods.MB_ICONHAND); } return hand; } } /// public static SystemSound Question { get { if (question == null) { question = new SystemSound(NativeMethods.MB_ICONQUESTION); } return question; } } private class NativeMethods { // Constructor added because of FxCop rules private NativeMethods() {} internal const int MB_ICONHAND = 0x000010, MB_ICONQUESTION = 0x000020, MB_ICONEXCLAMATION = 0x000030, MB_ICONASTERISK = 0x000040; } } /// [HostProtection(UI = true)] public class SystemSound { private int soundType; internal SystemSound(int soundType) { this.soundType = soundType; } /// [SuppressMessage("Microsoft.Security", "CA2106:SecureAsserts")] public void Play() { IntSecurity.UnmanagedCode.Assert(); try { SafeNativeMethods.MessageBeep(soundType); } finally { System.Security.CodeAccessPermission.RevertAssert(); } } private class SafeNativeMethods { // Constructor added because of FxCop rules private SafeNativeMethods() {} [DllImport(ExternDll.User32, ExactSpelling=true, CharSet=System.Runtime.InteropServices.CharSet.Auto)] internal static extern bool MessageBeep(int type); } } }
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- PluralizationService.cs
- CodeCompileUnit.cs
- Positioning.cs
- SerializationHelper.cs
- ExpressionCopier.cs
- DataGridViewRowErrorTextNeededEventArgs.cs
- FontStyles.cs
- PrintEvent.cs
- PocoPropertyAccessorStrategy.cs
- EdmComplexPropertyAttribute.cs
- PasswordRecovery.cs
- OciHandle.cs
- WebPartVerb.cs
- DeclarativeExpressionConditionDeclaration.cs
- DashStyle.cs
- DynamicDocumentPaginator.cs
- EncodedStreamFactory.cs
- StylusEventArgs.cs
- securitycriticaldata.cs
- ActiveXContainer.cs
- hresults.cs
- SHA1Managed.cs
- VolatileEnlistmentState.cs
- CalloutQueueItem.cs
- SmtpSpecifiedPickupDirectoryElement.cs
- SafeTimerHandle.cs
- PtsContext.cs
- KnownColorTable.cs
- AstTree.cs
- ToolStripItemTextRenderEventArgs.cs
- OutOfProcStateClientManager.cs
- OracleRowUpdatingEventArgs.cs
- TransactionFlowAttribute.cs
- MachineKeyConverter.cs
- MulticastIPAddressInformationCollection.cs
- TrackPoint.cs
- LZCodec.cs
- TemplateBamlRecordReader.cs
- AccessControlList.cs
- ToolStripItemEventArgs.cs
- Ref.cs
- SessionStateModule.cs
- LoadedEvent.cs
- SmtpFailedRecipientException.cs
- SizeConverter.cs
- IndexedEnumerable.cs
- PaintEvent.cs
- DataSpaceManager.cs
- CriticalExceptions.cs
- RangeValueProviderWrapper.cs
- StylusPointProperty.cs
- TableLayoutColumnStyleCollection.cs
- MappedMetaModel.cs
- ButtonField.cs
- HiddenFieldDesigner.cs
- TextWriterTraceListener.cs
- ConstraintManager.cs
- Glyph.cs
- CompilerTypeWithParams.cs
- RecipientInfo.cs
- NoPersistProperty.cs
- CodeMethodReturnStatement.cs
- CompiledXpathExpr.cs
- ColumnHeaderConverter.cs
- MatrixStack.cs
- BadImageFormatException.cs
- EventListener.cs
- diagnosticsswitches.cs
- Stopwatch.cs
- SecurityDescriptor.cs
- EntityDataReader.cs
- TraceData.cs
- TextDecorations.cs
- ToolBar.cs
- TypedDataSourceCodeGenerator.cs
- DateTimeOffsetAdapter.cs
- MapPathBasedVirtualPathProvider.cs
- TimelineCollection.cs
- ISFTagAndGuidCache.cs
- VectorAnimationBase.cs
- UInt32Storage.cs
- Grammar.cs
- EventProviderWriter.cs
- PropertyGrid.cs
- Panel.cs
- Lasso.cs
- MachineSettingsSection.cs
- ConfigurationErrorsException.cs
- WebHttpBindingCollectionElement.cs
- OleDbCommandBuilder.cs
- Int64Storage.cs
- SR.cs
- ExtendedProtectionPolicyTypeConverter.cs
- TextDpi.cs
- ExpandedProjectionNode.cs
- ApplicationProxyInternal.cs
- QilTargetType.cs
- ConfigsHelper.cs
- ThemeConfigurationDialog.cs
- CodeDomDecompiler.cs