Code:
/ Dotnetfx_Vista_SP2 / Dotnetfx_Vista_SP2 / 8.0.50727.4016 / DEVDIV / depot / DevDiv / releases / whidbey / NetFxQFE / ndp / fx / src / WinForms / Managed / System / WinForms / ComponentModel / COM2Interop / BaseCAMarshaler.cs / 1 / BaseCAMarshaler.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Windows.Forms.ComponentModel.Com2Interop { using System.Runtime.Remoting; using System.Runtime.InteropServices; using System.ComponentModel; using System.Diagnostics; using System; using Microsoft.Win32; using System.Globalization; ////// /// This class performs basic operation for marshaling data passed /// in from native in one of the CA*** structs (CADWORD, CAUUID, etc), /// which are structs in which the first word is the number of elements /// and the second is a pointer to an array of such elements. /// /// internal abstract class BaseCAMarshaler { private static TraceSwitch CAMarshalSwitch = new TraceSwitch("CAMarshal", "BaseCAMarshaler: Debug CA* struct marshaling"); private IntPtr caArrayAddress; private int count; private object[] itemArray; ////// /// Base ctor /// protected BaseCAMarshaler(NativeMethods.CA_STRUCT caStruct) : base() { if (caStruct == null) { count = 0; Debug.WriteLineIf(CAMarshalSwitch.TraceVerbose, "BaseCAMarshaler: null passed in!"); } // first 4 bytes is the count count = caStruct.cElems; caArrayAddress = caStruct.pElems; Debug.WriteLineIf(CAMarshalSwitch.TraceVerbose, "Marshaling " + count.ToString(CultureInfo.InvariantCulture) + " items of type " + ItemType.Name); } ~BaseCAMarshaler() { try { if (itemArray == null && caArrayAddress != IntPtr.Zero) { object[] items = Items; } } catch { } } protected abstract Array CreateArray(); ////// /// Returns the type of item this marshaler will /// return in the items array. /// public abstract Type ItemType { get; } ////// /// Returns the count of items that will be or have been /// marshaled. /// public int Count { get { return count; } } ////// /// The marshaled items. /// public virtual object[] Items { get { try { if (itemArray == null) { itemArray = Get_Items(); } } catch (Exception ex) { Debug.WriteLineIf(CAMarshalSwitch.TraceVerbose, "Marshaling failed: " + ex.GetType().Name + ", " + ex.Message); } #if DEBUG if (itemArray != null) { Debug.WriteLineIf(CAMarshalSwitch.TraceVerbose, "Marshaled: " + itemArray.Length.ToString(CultureInfo.InvariantCulture) + " items, array type=" + itemArray.GetType().Name); } #endif return itemArray; } } ////// /// Override this member to perform marshalling of a single item /// given it's native address. /// protected abstract object GetItemFromAddress(IntPtr addr); // Retrieve the items private object[] Get_Items() { // cycle through the addresses and get an item for each addr IntPtr addr; Array items = new object[Count]; //cpb vs38262 System.Array.CreateInstance(this.ItemType,count); object curItem; for (int i = 0; i < count; i++) { try { addr = Marshal.ReadIntPtr(caArrayAddress, i * IntPtr.Size); curItem = GetItemFromAddress(addr); if (curItem != null && ItemType.IsInstanceOfType(curItem)) { items.SetValue(curItem, i); } Debug.WriteLineIf(CAMarshalSwitch.TraceVerbose, "Marshaled " + ItemType.Name + " item, value=" + (curItem == null ? "(null)" : curItem.ToString())); } catch (Exception ex) { Debug.WriteLineIf(CAMarshalSwitch.TraceVerbose, "Failed to marshal " + ItemType.Name + " item, exception=" + ex.GetType().Name +", " +ex.Message); } } // free the array Marshal.FreeCoTaskMem(caArrayAddress); caArrayAddress = IntPtr.Zero; return(object[])items; } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. //------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Windows.Forms.ComponentModel.Com2Interop { using System.Runtime.Remoting; using System.Runtime.InteropServices; using System.ComponentModel; using System.Diagnostics; using System; using Microsoft.Win32; using System.Globalization; ////// /// This class performs basic operation for marshaling data passed /// in from native in one of the CA*** structs (CADWORD, CAUUID, etc), /// which are structs in which the first word is the number of elements /// and the second is a pointer to an array of such elements. /// /// internal abstract class BaseCAMarshaler { private static TraceSwitch CAMarshalSwitch = new TraceSwitch("CAMarshal", "BaseCAMarshaler: Debug CA* struct marshaling"); private IntPtr caArrayAddress; private int count; private object[] itemArray; ////// /// Base ctor /// protected BaseCAMarshaler(NativeMethods.CA_STRUCT caStruct) : base() { if (caStruct == null) { count = 0; Debug.WriteLineIf(CAMarshalSwitch.TraceVerbose, "BaseCAMarshaler: null passed in!"); } // first 4 bytes is the count count = caStruct.cElems; caArrayAddress = caStruct.pElems; Debug.WriteLineIf(CAMarshalSwitch.TraceVerbose, "Marshaling " + count.ToString(CultureInfo.InvariantCulture) + " items of type " + ItemType.Name); } ~BaseCAMarshaler() { try { if (itemArray == null && caArrayAddress != IntPtr.Zero) { object[] items = Items; } } catch { } } protected abstract Array CreateArray(); ////// /// Returns the type of item this marshaler will /// return in the items array. /// public abstract Type ItemType { get; } ////// /// Returns the count of items that will be or have been /// marshaled. /// public int Count { get { return count; } } ////// /// The marshaled items. /// public virtual object[] Items { get { try { if (itemArray == null) { itemArray = Get_Items(); } } catch (Exception ex) { Debug.WriteLineIf(CAMarshalSwitch.TraceVerbose, "Marshaling failed: " + ex.GetType().Name + ", " + ex.Message); } #if DEBUG if (itemArray != null) { Debug.WriteLineIf(CAMarshalSwitch.TraceVerbose, "Marshaled: " + itemArray.Length.ToString(CultureInfo.InvariantCulture) + " items, array type=" + itemArray.GetType().Name); } #endif return itemArray; } } ////// /// Override this member to perform marshalling of a single item /// given it's native address. /// protected abstract object GetItemFromAddress(IntPtr addr); // Retrieve the items private object[] Get_Items() { // cycle through the addresses and get an item for each addr IntPtr addr; Array items = new object[Count]; //cpb vs38262 System.Array.CreateInstance(this.ItemType,count); object curItem; for (int i = 0; i < count; i++) { try { addr = Marshal.ReadIntPtr(caArrayAddress, i * IntPtr.Size); curItem = GetItemFromAddress(addr); if (curItem != null && ItemType.IsInstanceOfType(curItem)) { items.SetValue(curItem, i); } Debug.WriteLineIf(CAMarshalSwitch.TraceVerbose, "Marshaled " + ItemType.Name + " item, value=" + (curItem == null ? "(null)" : curItem.ToString())); } catch (Exception ex) { Debug.WriteLineIf(CAMarshalSwitch.TraceVerbose, "Failed to marshal " + ItemType.Name + " item, exception=" + ex.GetType().Name +", " +ex.Message); } } // free the array Marshal.FreeCoTaskMem(caArrayAddress); caArrayAddress = IntPtr.Zero; return(object[])items; } } } // 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
- Bitmap.cs
- ConfigPathUtility.cs
- EntityContainer.cs
- AuthenticatedStream.cs
- RootCodeDomSerializer.cs
- Debugger.cs
- AssertFilter.cs
- StorageTypeMapping.cs
- ACL.cs
- ListSurrogate.cs
- OdbcReferenceCollection.cs
- XmlSchemaObjectCollection.cs
- ThicknessAnimation.cs
- IsolatedStorage.cs
- AnimatedTypeHelpers.cs
- WebPermission.cs
- CapabilitiesState.cs
- BadImageFormatException.cs
- ThreadAttributes.cs
- FontDriver.cs
- SessionStateItemCollection.cs
- StrokeCollection2.cs
- TextDecorationCollection.cs
- ToolboxItemCollection.cs
- NumberFormatter.cs
- DataFormat.cs
- MemberMemberBinding.cs
- WebPartZoneCollection.cs
- _ProxyChain.cs
- ColumnCollection.cs
- Int32RectValueSerializer.cs
- GZipDecoder.cs
- DecimalStorage.cs
- TextReader.cs
- StringAnimationBase.cs
- ValidationPropertyAttribute.cs
- controlskin.cs
- SystemResourceKey.cs
- _NetworkingPerfCounters.cs
- XPathNavigatorReader.cs
- ChangesetResponse.cs
- DeviceContext2.cs
- Point4DValueSerializer.cs
- GlyphRun.cs
- ClientTargetSection.cs
- HtmlTernaryTree.cs
- ipaddressinformationcollection.cs
- Animatable.cs
- Activity.cs
- BindingsCollection.cs
- VirtualDirectoryMapping.cs
- ReadOnlyDictionary.cs
- ButtonBaseAdapter.cs
- DataChangedEventManager.cs
- DesignerTransactionCloseEvent.cs
- ContextMenu.cs
- Hyperlink.cs
- XmlSchemaObjectTable.cs
- Base64Encoder.cs
- PermissionSetEnumerator.cs
- EventLogEntryCollection.cs
- CellIdBoolean.cs
- BackgroundFormatInfo.cs
- CodeAttributeArgument.cs
- MetadataUtilsSmi.cs
- FormsAuthentication.cs
- AliasedExpr.cs
- Adorner.cs
- SqlExpressionNullability.cs
- WsatTransactionInfo.cs
- QilTargetType.cs
- NodeFunctions.cs
- HostingEnvironment.cs
- WasEndpointConfigContainer.cs
- EncoderParameters.cs
- SafeNativeMethods.cs
- AttachedAnnotation.cs
- CodeDirectionExpression.cs
- FileEnumerator.cs
- InfoCardConstants.cs
- DataControlFieldCollection.cs
- XmlDeclaration.cs
- ThemeDirectoryCompiler.cs
- DataGridViewCellEventArgs.cs
- MarkupProperty.cs
- DataGridViewTextBoxCell.cs
- SoundPlayer.cs
- WebPartPersonalization.cs
- Serializer.cs
- SpeakInfo.cs
- RSAProtectedConfigurationProvider.cs
- XmlDataContract.cs
- SelectionEditor.cs
- Label.cs
- ActivationServices.cs
- IPAddress.cs
- CalendarItem.cs
- RegexCaptureCollection.cs
- sqlpipe.cs
- ReadOnlyHierarchicalDataSourceView.cs