[Mwinapi-commits] SF.net SVN: mwinapi:[143] trunk/ManagedWinapi/Accessibility/ SystemAccessibleObject.cs

[<zi...@us...>]

Revision: 143
          http://sourceforge.net/p/mwinapi/code/143
Author:   ziewer
Date:     2017-12-12 11:38:03 +0000 (Tue, 12 Dec 2017)
Log Message:
-----------
Reverted modification in SystemAccessibleObject.Visible (due to incompatibility with Google Chrome)
- now 'Visible' only check state INVISIBLE (as it was before rev.142)
- new method 'IsState()' can be used to check any state (e.g. OFFSCREEN) e.g. for tabs in Firefox Quantum v.57
- catch NullReferenceException in 'State' (e.g. sometimes caused by IBM Notes)

Modified Paths:
--------------
    trunk/ManagedWinapi/Accessibility/SystemAccessibleObject.cs

Modified: trunk/ManagedWinapi/Accessibility/SystemAccessibleObject.cs
===================================================================
--- trunk/ManagedWinapi/Accessibility/SystemAccessibleObject.cs	2017-11-23 17:34:27 UTC (rev 142)
+++ trunk/ManagedWinapi/Accessibility/SystemAccessibleObject.cs	2017-12-12 11:38:03 UTC (rev 143)
@@ -327,6 +327,10 @@
                 {
                     return 0;
                 }
+                catch (NullReferenceException)
+                {
+                    return 0;
+                }
             }
         }
 
@@ -348,12 +352,19 @@
         {
             get
             {
-                return (State & (int)AccStates.STATE_SYSTEM_INVISIBLE) == 0
-                    && (State & (int)AccStates.STATE_SYSTEM_OFFSCREEN) == 0;
+                return (State & (int)AccStates.STATE_SYSTEM_INVISIBLE) == 0;
             }
         }
 
         /// <summary>
+        /// Whether this accessibile state is set.
+        /// </summary>
+        public bool IsState(AccStates state)
+        {
+            return (State & (int)state) > 0;
+        }
+
+        /// <summary>
         /// The parent of this accessible object, or <b>null</b> if none exists.
         /// </summary>
         public SystemAccessibleObject Parent

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