Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / wpf / src / UIAutomation / Win32Providers / MS / Internal / AutomationProxies / WindowsListViewScroll.cs / 1305600 / WindowsListViewScroll.cs
//---------------------------------------------------------------------------- // //// Copyright (C) Microsoft Corporation. All rights reserved. // // // // Description: Class to provide scroll bars for listview // // History: // Jean-Francois Peyroux (in DotNet) // 2003/08/08 - alexsn Updated for WCP // 2004/08/19 - preid Took this out of the class hierarchy for listview and made the // non-client area use to create the scroll bar children // //--------------------------------------------------------------------------- using System; using System.Runtime.InteropServices; using System.ComponentModel; using System.Windows.Automation; using System.Windows.Automation.Provider; using System.Windows; using MS.Win32; namespace MS.Internal.AutomationProxies { // The default implementation for scroll bars uses SB_THUMBTRACK and SB_THUMBPOSITION for SetValue // This does not work with listview so the Scrollbar is overloaded with a derived version that // uses LVM_SCROLL messages instead class WindowsListViewScrollBar: WindowsScrollBar, IRangeValueProvider { // ----------------------------------------------------- // // Constructors // //----------------------------------------------------- #region Constructors internal WindowsListViewScrollBar(IntPtr hwnd, ProxyFragment parent, int item, int sbFlag) : base( hwnd, parent, item, sbFlag){} #endregion Constructors //------------------------------------------------------ // // Patterns Implementation // //----------------------------------------------------- #region RangeValue Pattern void IRangeValueProvider.SetValue(double val) { // Check if the window is disabled if (!SafeNativeMethods.IsWindowEnabled (_hwnd)) { throw new ElementNotEnabledException(); } NativeMethods.ScrollInfo si = new NativeMethods.ScrollInfo (); si.fMask = NativeMethods.SIF_ALL; si.cbSize = Marshal.SizeOf (si.GetType ()); if (!Misc.GetScrollInfo(_hwnd, _sbFlag, ref si)) { return; } int pos = (int)val; // Throw if val is greater than the maximum or less than the minimum. // See remarks for WindowsScrollBar.GetScrollValue(ScrollBarInfo.MaximumPosition) // regarding this calculation of the allowed maximum. if (pos > si.nMax - si.nPage + (si.nPage > 0 ? 1 : 0)) { throw new ArgumentOutOfRangeException("value", val, SR.Get(SRID.RangeValueMax)); } else if (pos < si.nMin) { throw new ArgumentOutOfRangeException("value", val, SR.Get(SRID.RangeValueMin)); } // LVM_SCROLL does not work in mode Report, use SetScrollPos instead bool isVerticalScroll = IsScrollBarVertical(_hwnd, _sbFlag); if (isVerticalScroll && WindowsListView.InReportView (_hwnd)) { Misc.SetScrollPos(_hwnd, _sbFlag, pos, true); return; } // get the "full size" of the list-view int size = WindowsListView.ApproximateViewRect (_hwnd); // delta between current and user-requested position in pixels // since the cPelsAll contains the dimension in pels for all items + the 2 pels of the border // the operation below does a trunc on purpose int dx = 0, dy = 0; if (!isVerticalScroll) { int cPelsAll = NativeMethods.Util.LOWORD (size); dx = (int)((pos - si.nPos) * ((double)cPelsAll / (si.nMax + 1 - si.nMin))); } else { int cPelsAll = NativeMethods.Util.HIWORD (size); dy = (int)((pos - si.nPos) * ((double)cPelsAll / (si.nMax + 1 - si.nMin))); } if (WindowsListView.Scroll (_hwnd, (IntPtr) dx, (IntPtr) dy)) { // Check the result, on occasion the result will be different to given value // a-jeanp: I played a lot to figure out what it is not the case. // I am giving up and issuing instead a second call with a new delta. if (!Misc.GetScrollInfo(_hwnd, _sbFlag, ref si)) { return; } if (si.nPos != pos) { if (!isVerticalScroll) { int cPelsAll = NativeMethods.Util.LOWORD (size); dx = (pos - si.nPos) * (cPelsAll / (si.nMax + 1 - si.nMin)); } else { int cPelsAll = NativeMethods.Util.HIWORD (size); dy = (pos - si.nPos) * (cPelsAll / (si.nMax + 1 - si.nMin)); } WindowsListView.Scroll (_hwnd, (IntPtr) dx, (IntPtr) dy); } } } #endregion Value Pattern } } // 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
- CustomAttributeSerializer.cs
- SafeNativeMethods.cs
- PrintingPermissionAttribute.cs
- Exception.cs
- ScriptReferenceEventArgs.cs
- SrgsToken.cs
- DateTimeOffsetAdapter.cs
- TabletDeviceInfo.cs
- IconConverter.cs
- MemberExpression.cs
- Monitor.cs
- XmlEncoding.cs
- WebPartTransformer.cs
- ResolveResponse.cs
- QilReplaceVisitor.cs
- AccessDataSourceView.cs
- GeneralTransform3DTo2D.cs
- ControlAdapter.cs
- COAUTHINFO.cs
- RoutedCommand.cs
- RegexStringValidator.cs
- ContentPathSegment.cs
- MatrixIndependentAnimationStorage.cs
- MulticastNotSupportedException.cs
- SmtpNetworkElement.cs
- HandlerFactoryWrapper.cs
- WebServiceErrorEvent.cs
- DrawItemEvent.cs
- ConfigXmlWhitespace.cs
- RemotingConfigParser.cs
- RectAnimationUsingKeyFrames.cs
- AdapterDictionary.cs
- GuidelineSet.cs
- InvalidDocumentContentsException.cs
- ADRoleFactory.cs
- ContractDescription.cs
- EventLogConfiguration.cs
- BevelBitmapEffect.cs
- CustomAttributeFormatException.cs
- MultiTouchSystemGestureLogic.cs
- RelatedCurrencyManager.cs
- CodeArrayCreateExpression.cs
- MimeTypePropertyAttribute.cs
- FrameworkPropertyMetadata.cs
- SqlRecordBuffer.cs
- AQNBuilder.cs
- ProbeRequestResponseAsyncResult.cs
- UInt64Storage.cs
- MessagePropertyDescription.cs
- TypeSystem.cs
- QueryCacheEntry.cs
- HelpKeywordAttribute.cs
- Int32EqualityComparer.cs
- ResourceKey.cs
- HashSet.cs
- UseManagedPresentationBindingElement.cs
- NullableFloatSumAggregationOperator.cs
- DefinitionUpdate.cs
- GraphicsContainer.cs
- PassportAuthenticationModule.cs
- AmbientLight.cs
- DataServiceContext.cs
- SequenceDesigner.cs
- DefaultBindingPropertyAttribute.cs
- Effect.cs
- ToolboxDataAttribute.cs
- SQLGuidStorage.cs
- ClrPerspective.cs
- VisualTreeUtils.cs
- MessageEnumerator.cs
- XmlSerializerNamespaces.cs
- UpdateCompiler.cs
- RawMouseInputReport.cs
- Evidence.cs
- BridgeDataRecord.cs
- ProvideValueServiceProvider.cs
- DbException.cs
- FixedSOMPageConstructor.cs
- DataServiceStreamProviderWrapper.cs
- MouseDevice.cs
- HttpPostedFile.cs
- WebContext.cs
- EntityDataSourceDataSelectionPanel.cs
- MembershipSection.cs
- ListViewDesigner.cs
- XmlSchemaObjectCollection.cs
- TraceUtility.cs
- COM2Properties.cs
- InputQueue.cs
- ListenerTraceUtility.cs
- AssemblyName.cs
- SamlAssertionKeyIdentifierClause.cs
- ConfigPathUtility.cs
- IPEndPointCollection.cs
- BoundPropertyEntry.cs
- RootBrowserWindowAutomationPeer.cs
- Point3DAnimationBase.cs
- Relationship.cs
- HttpResponseInternalBase.cs
- ConversionHelper.cs