Code:
/ Net / Net / 3.5.50727.3053 / DEVDIV / depot / DevDiv / releases / whidbey / netfxsp / ndp / fx / src / WinForms / Managed / System / WinForms / ComponentModel / COM2Interop / COM2PictureConverter.cs / 1 / COM2PictureConverter.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Windows.Forms.ComponentModel.Com2Interop { using System.Runtime.Serialization.Formatters; using System.ComponentModel; using System.Diagnostics; using System; using System.Drawing; using System.Collections; using Microsoft.Win32; ////// /// This class maps an IPicture to a System.Drawing.Image. /// internal class Com2PictureConverter : Com2DataTypeToManagedDataTypeConverter { object lastManaged; IntPtr lastNativeHandle; WeakReference pictureRef; IntPtr lastPalette = IntPtr.Zero; Type pictureType = typeof(Bitmap); public Com2PictureConverter(Com2PropertyDescriptor pd) { if (pd.DISPID == NativeMethods.ActiveX.DISPID_MOUSEICON || pd.Name.IndexOf("Icon") != -1) { pictureType = typeof(Icon); } } ////// /// Returns the managed type that this editor maps the property type to. /// public override Type ManagedType { get { return pictureType; } } ////// /// Converts the native value into a managed value /// public override object ConvertNativeToManaged(object nativeValue, Com2PropertyDescriptor pd) { if (nativeValue == null) { return null; } Debug.Assert(nativeValue is UnsafeNativeMethods.IPicture, "nativevalue is not IPicture"); UnsafeNativeMethods.IPicture nativePicture = (UnsafeNativeMethods.IPicture)nativeValue; IntPtr handle = nativePicture.GetHandle(); if (lastManaged != null && handle == lastNativeHandle) { return lastManaged; } lastNativeHandle = handle; //lastPalette = nativePicture.GetHPal(); if (handle != IntPtr.Zero) { switch (nativePicture.GetPictureType()) { case NativeMethods.Ole.PICTYPE_ICON: pictureType = typeof(Icon); lastManaged = Icon.FromHandle(handle); break; case NativeMethods.Ole.PICTYPE_BITMAP: pictureType = typeof(Bitmap); lastManaged = Image.FromHbitmap(handle); break; default: Debug.Fail("Unknown picture type"); break; } pictureRef = new WeakReference(nativePicture); } else { lastManaged = null; pictureRef = null; } return lastManaged; } ////// /// Converts the managed value into a native value /// public override object ConvertManagedToNative(object managedValue, Com2PropertyDescriptor pd, ref bool cancelSet) { // don't cancel the set cancelSet = false; if (lastManaged != null && lastManaged.Equals(managedValue) && pictureRef != null && pictureRef.IsAlive) { return pictureRef.Target; } // we have to build an IPicture lastManaged = managedValue; if (managedValue != null) { Guid g = typeof(UnsafeNativeMethods.IPicture).GUID; NativeMethods.PICTDESC pictdesc = null; bool own = false; if (lastManaged is Icon) { pictdesc = NativeMethods.PICTDESC.CreateIconPICTDESC(((Icon)lastManaged).Handle); } else if (lastManaged is Bitmap) { pictdesc = NativeMethods.PICTDESC.CreateBitmapPICTDESC(((Bitmap)lastManaged).GetHbitmap(), lastPalette); own = true; } else { Debug.Fail("Unknown Image type: " + managedValue.GetType().Name); } UnsafeNativeMethods.IPicture pict = UnsafeNativeMethods.OleCreatePictureIndirect(pictdesc, ref g, own); lastNativeHandle = pict.GetHandle(); pictureRef = new WeakReference(pict); return pict; } else { lastManaged = null; lastNativeHandle = lastPalette = IntPtr.Zero; pictureRef = null; return null; } } } } // 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.Serialization.Formatters; using System.ComponentModel; using System.Diagnostics; using System; using System.Drawing; using System.Collections; using Microsoft.Win32; ////// /// This class maps an IPicture to a System.Drawing.Image. /// internal class Com2PictureConverter : Com2DataTypeToManagedDataTypeConverter { object lastManaged; IntPtr lastNativeHandle; WeakReference pictureRef; IntPtr lastPalette = IntPtr.Zero; Type pictureType = typeof(Bitmap); public Com2PictureConverter(Com2PropertyDescriptor pd) { if (pd.DISPID == NativeMethods.ActiveX.DISPID_MOUSEICON || pd.Name.IndexOf("Icon") != -1) { pictureType = typeof(Icon); } } ////// /// Returns the managed type that this editor maps the property type to. /// public override Type ManagedType { get { return pictureType; } } ////// /// Converts the native value into a managed value /// public override object ConvertNativeToManaged(object nativeValue, Com2PropertyDescriptor pd) { if (nativeValue == null) { return null; } Debug.Assert(nativeValue is UnsafeNativeMethods.IPicture, "nativevalue is not IPicture"); UnsafeNativeMethods.IPicture nativePicture = (UnsafeNativeMethods.IPicture)nativeValue; IntPtr handle = nativePicture.GetHandle(); if (lastManaged != null && handle == lastNativeHandle) { return lastManaged; } lastNativeHandle = handle; //lastPalette = nativePicture.GetHPal(); if (handle != IntPtr.Zero) { switch (nativePicture.GetPictureType()) { case NativeMethods.Ole.PICTYPE_ICON: pictureType = typeof(Icon); lastManaged = Icon.FromHandle(handle); break; case NativeMethods.Ole.PICTYPE_BITMAP: pictureType = typeof(Bitmap); lastManaged = Image.FromHbitmap(handle); break; default: Debug.Fail("Unknown picture type"); break; } pictureRef = new WeakReference(nativePicture); } else { lastManaged = null; pictureRef = null; } return lastManaged; } ////// /// Converts the managed value into a native value /// public override object ConvertManagedToNative(object managedValue, Com2PropertyDescriptor pd, ref bool cancelSet) { // don't cancel the set cancelSet = false; if (lastManaged != null && lastManaged.Equals(managedValue) && pictureRef != null && pictureRef.IsAlive) { return pictureRef.Target; } // we have to build an IPicture lastManaged = managedValue; if (managedValue != null) { Guid g = typeof(UnsafeNativeMethods.IPicture).GUID; NativeMethods.PICTDESC pictdesc = null; bool own = false; if (lastManaged is Icon) { pictdesc = NativeMethods.PICTDESC.CreateIconPICTDESC(((Icon)lastManaged).Handle); } else if (lastManaged is Bitmap) { pictdesc = NativeMethods.PICTDESC.CreateBitmapPICTDESC(((Bitmap)lastManaged).GetHbitmap(), lastPalette); own = true; } else { Debug.Fail("Unknown Image type: " + managedValue.GetType().Name); } UnsafeNativeMethods.IPicture pict = UnsafeNativeMethods.OleCreatePictureIndirect(pictdesc, ref g, own); lastNativeHandle = pict.GetHandle(); pictureRef = new WeakReference(pict); return pict; } else { lastManaged = null; lastNativeHandle = lastPalette = IntPtr.Zero; pictureRef = null; return null; } } } } // 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
- BindableTemplateBuilder.cs
- GeometryModel3D.cs
- LogAppendAsyncResult.cs
- InstanceStore.cs
- WebServicesDescriptionAttribute.cs
- StringFormat.cs
- DataObjectAttribute.cs
- TwoPhaseCommit.cs
- WindowsRichEditRange.cs
- CacheOutputQuery.cs
- IApplicationTrustManager.cs
- EncodingTable.cs
- CodeTypeDeclaration.cs
- WebPartEditorApplyVerb.cs
- QualifiedCellIdBoolean.cs
- PeerPresenceInfo.cs
- MasterPage.cs
- CharAnimationBase.cs
- ProvidersHelper.cs
- ResolvedKeyFrameEntry.cs
- CodeComment.cs
- LabelExpression.cs
- FileDataSource.cs
- CompiledScopeCriteria.cs
- XamlGridLengthSerializer.cs
- StorageEntitySetMapping.cs
- UIElementParaClient.cs
- SafeRightsManagementHandle.cs
- DataGridViewColumnCollection.cs
- HandleRef.cs
- DataBinding.cs
- SlotInfo.cs
- GridViewRowEventArgs.cs
- FixedDocument.cs
- ObjectItemAssemblyLoader.cs
- Misc.cs
- BevelBitmapEffect.cs
- AbandonedMutexException.cs
- ReadOnlyHierarchicalDataSource.cs
- LoginName.cs
- DependencyProperty.cs
- IODescriptionAttribute.cs
- XPathNodeIterator.cs
- DialogResultConverter.cs
- MobileErrorInfo.cs
- TextDocumentView.cs
- EventLogInternal.cs
- SqlDataSourceView.cs
- CodeTypeReferenceCollection.cs
- UnsafeNativeMethods.cs
- CompiledQueryCacheEntry.cs
- InfoCardKeyedHashAlgorithm.cs
- RoleBoolean.cs
- XmlSignificantWhitespace.cs
- RightsManagementEncryptionTransform.cs
- Label.cs
- DrawingContextWalker.cs
- HostedTcpTransportManager.cs
- CharacterHit.cs
- _FixedSizeReader.cs
- WinEventTracker.cs
- VisualProxy.cs
- XmlDomTextWriter.cs
- BuildProviderUtils.cs
- WebConfigManager.cs
- WriteFileContext.cs
- ListViewItemMouseHoverEvent.cs
- RadioButtonRenderer.cs
- Publisher.cs
- DataObject.cs
- CancellationHandler.cs
- WindowsListView.cs
- PageAdapter.cs
- TypeLoadException.cs
- DynamicResourceExtensionConverter.cs
- SqlLiftWhereClauses.cs
- PhysicalOps.cs
- DbTransaction.cs
- XhtmlBasicValidatorAdapter.cs
- StyleModeStack.cs
- CompilerGlobalScopeAttribute.cs
- ForEachAction.cs
- TracedNativeMethods.cs
- RemotingSurrogateSelector.cs
- SByte.cs
- SecurityCriticalDataForSet.cs
- BookmarkEventArgs.cs
- InteropEnvironment.cs
- DesignTimeData.cs
- GeneralTransform.cs
- ParameterBuilder.cs
- KeyConverter.cs
- DBSchemaRow.cs
- ServiceActivationException.cs
- SqlConnectionFactory.cs
- RoutedEventValueSerializer.cs
- AttachedAnnotationChangedEventArgs.cs
- HtmlTernaryTree.cs
- ExtentCqlBlock.cs
- IChannel.cs