initial checkin of yaulw (locally)

Win32/COM.cs

@@ -0,0 +1,116 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Runtime.InteropServices;
+using System.Runtime.InteropServices.ComTypes;
+
+namespace Yaulw.Win32
+{
+    /// <remarks>
+    /// COM Win32 Helper Functions
+    /// </remarks>
+    public static class COM
+    {
+        /// <summary>
+        /// Returns a pointer to an implementation of IBindCtx (a bind context object). This object stores information about a particular moniker-binding operation
+        /// </summary>
+        /// <param name="reserved">This parameter is reserved and must be 0</param>
+        /// <param name="ppbc">Address of an IBindCtx* pointer variable that receives the interface pointer to the new bind context object. </param>
+        /// <returns>This function can return the standard return values E_OUTOFMEMORY and S_OK</returns>
+        [DllImport("ole32.dll")]
+        public static extern int CreateBindCtx(int reserved, out IBindCtx ppbc);
+
+        /// <summary>
+        /// Use this to retrieve the Actice COM Object from the ROT, for the specified progId
+        /// </summary>
+        /// <param name="progId"></param>
+        /// <returns>a valid com object, or null if error occured</returns>
+        public static Object GetActiceCOMObject(string progId)
+        {
+            Object app = null;
+            try
+            {
+                app = Marshal.GetActiveObject(progId);
+            }
+            catch (SystemException) { /* ignore */ }
+            return app;
+        }
+
+        /// <summary>
+        /// ROT Object Entry
+        /// </summary>
+        public struct RunningObject
+        {
+            public string name;
+            public object o;
+        }
+
+        /// <summary>
+        /// Use this to Get All Running Objects in the ROT
+        /// </summary>
+        /// <returns>list of all Runnint Objects in the ROT</returns>
+        public static List<RunningObject> GetRunningObjects()
+        {
+            // Get the table.
+            var res = new List<RunningObject>();
+            IBindCtx bc;
+
+            CreateBindCtx(0, out bc);
+            IRunningObjectTable runningObjectTable;
+
+            bc.GetRunningObjectTable(out runningObjectTable);
+            IEnumMoniker monikerEnumerator;
+            runningObjectTable.EnumRunning(out monikerEnumerator);
+            monikerEnumerator.Reset();
+
+            // Enumerate and fill our nice dictionary.
+            IMoniker[] monikers = new IMoniker[1];
+            IntPtr numFetched = IntPtr.Zero;
+
+            while (monikerEnumerator.Next(1, monikers, numFetched) == 0)
+            {
+                RunningObject running;
+                monikers[0].GetDisplayName(bc, null, out running.name);
+                runningObjectTable.GetObject(monikers[0], out running.o);
+                res.Add(running);
+            }
+            return res;
+        }
+
+        /// <summary>
+        /// Use this to Get A specific type of Object from the ROT
+        /// </summary>
+        /// <returns>List of a specific type of Object in the ROT</returns>
+        public static List<T> GetRunningObjectsOfType<T>()
+        {
+            // Get the table.
+            var res = new List<T>();
+            IBindCtx bc;
+
+            CreateBindCtx(0, out bc);
+            IRunningObjectTable runningObjectTable;
+
+            bc.GetRunningObjectTable(out runningObjectTable);
+            IEnumMoniker monikerEnumerator;
+            runningObjectTable.EnumRunning(out monikerEnumerator);
+            monikerEnumerator.Reset();
+
+            // Enumerate and fill our nice dictionary.
+            IMoniker[] monikers = new IMoniker[1];
+            IntPtr numFetched = IntPtr.Zero;
+
+            while (monikerEnumerator.Next(1, monikers, numFetched) == 0)
+            {
+                object o;
+                runningObjectTable.GetObject(monikers[0], out o);
+
+                if (o is T)
+                    res.Add((T)o);
+                o = null;
+            }
+            return res;
+        }
+    }
+
+}