Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / wpf / src / Core / CSharp / System / Windows / Automation / Peers / GenericRootAutomationPeer.cs / 1305600 / GenericRootAutomationPeer.cs
using System; using System.Runtime.InteropServices; using System.Security; using System.Security.Permissions; using System.Text; using System.Windows; using System.Windows.Interop; using System.Windows.Media; using System.ComponentModel; using MS.Internal; using MS.Win32; // Used to support the warnings disabled below #pragma warning disable 1634, 1691 namespace System.Windows.Automation.Peers { /// public class GenericRootAutomationPeer : UIElementAutomationPeer { /// public GenericRootAutomationPeer(UIElement owner): base(owner) {} /// override protected string GetClassNameCore() { return "Pane"; } /// override protected AutomationControlType GetAutomationControlTypeCore() { return AutomationControlType.Pane; } /// ////// Critical: As this accesses Handle /// TreatAsSafe: Returning the Window Title is considered safe - discussed on Automation TA review /// [SecurityCritical,SecurityTreatAsSafe] override protected string GetNameCore() { string name = base.GetNameCore(); if(name == string.Empty) { IntPtr hwnd = this.Hwnd; if(hwnd != IntPtr.Zero) { try { StringBuilder sb = new StringBuilder(512); //This method elevates via SuppressUnmanadegCodeSecurity and throws Win32Exception on GetLastError UnsafeNativeMethods.GetWindowText(new HandleRef(null, hwnd), sb, sb.Capacity); name = sb.ToString(); } // Allow empty catch statements. #pragma warning disable 56502 catch(Win32Exception) {} // Disallow empty catch statements. #pragma warning restore 56502 if (name == null) name = string.Empty; } } return name; } /// ////// Critical as this method accesses critical data. /// TreatAsSafe - window bounds by themselves is considered safe. /// [SecurityCritical, SecurityTreatAsSafe ] override protected Rect GetBoundingRectangleCore() { Rect bounds = new Rect(0,0,0,0); IntPtr hwnd = this.Hwnd; if(hwnd != IntPtr.Zero) { NativeMethods.RECT rc = new NativeMethods.RECT(0,0,0,0); try { //This method elevates via SuppressUnmanadegCodeSecurity and throws Win32Exception on GetLastError SafeNativeMethods.GetWindowRect(new HandleRef(null, hwnd), ref rc); } // Allow empty catch statements. #pragma warning disable 56502 catch(Win32Exception) {} // Disallow empty catch statements. #pragma warning restore 56502 bounds = new Rect(rc.left, rc.top, rc.right - rc.left, rc.bottom - rc.top); } return bounds; } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
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