Merge pull request #19 from chcg/x64_fix

fix for issue X64 pointer arithmetic issue #18

Author: kbilsted

Visual Studio Project Template C#/PluginInfrastructure/NppPluginNETHelper.cs

@@ -74,17 +74,17 @@ public void Add(FuncItem funcItem)
                 RtlMoveMemory(newPointer, _nativePointer, oldSize);
                 Marshal.FreeHGlobal(_nativePointer);
             }
-            IntPtr ptrPosNewItem = (IntPtr)((int)newPointer + oldSize);
+            IntPtr ptrPosNewItem = (IntPtr)(newPointer.ToInt64() + oldSize);
             byte[] aB = Encoding.Unicode.GetBytes(funcItem._itemName + "\0");
             Marshal.Copy(aB, 0, ptrPosNewItem, aB.Length);
-            ptrPosNewItem = (IntPtr)((int)ptrPosNewItem + 128);
+            ptrPosNewItem = (IntPtr)(ptrPosNewItem.ToInt64() + 128);
             IntPtr p = (funcItem._pFunc != null) ? Marshal.GetFunctionPointerForDelegate(funcItem._pFunc) : IntPtr.Zero;
             Marshal.WriteIntPtr(ptrPosNewItem, p);
-            ptrPosNewItem = (IntPtr)((int)ptrPosNewItem + IntPtr.Size);
+            ptrPosNewItem = (IntPtr)(ptrPosNewItem.ToInt64() + IntPtr.Size);
             Marshal.WriteInt32(ptrPosNewItem, funcItem._cmdID);
-            ptrPosNewItem = (IntPtr)((int)ptrPosNewItem + 4);
+            ptrPosNewItem = (IntPtr)(ptrPosNewItem.ToInt64() + 4);
             Marshal.WriteInt32(ptrPosNewItem, Convert.ToInt32(funcItem._init2Check));
-            ptrPosNewItem = (IntPtr)((int)ptrPosNewItem + 4);
+            ptrPosNewItem = (IntPtr)(ptrPosNewItem.ToInt64() + 4);
             if (funcItem._pShKey._key != 0)
             {
                 IntPtr newShortCutKey = Marshal.AllocHGlobal(4);
@@ -103,15 +103,15 @@ public void RefreshItems()
             {
                 FuncItem updatedItem = new FuncItem();
                 updatedItem._itemName = _funcItems[i]._itemName;
-                ptrPosItem = (IntPtr)((int)ptrPosItem + 128);
+                ptrPosItem = (IntPtr)(ptrPosItem.ToInt64() + 128);
                 updatedItem._pFunc = _funcItems[i]._pFunc;
-                ptrPosItem = (IntPtr)((int)ptrPosItem + IntPtr.Size);
+                ptrPosItem = (IntPtr)(ptrPosItem.ToInt64() + IntPtr.Size);
                 updatedItem._cmdID = Marshal.ReadInt32(ptrPosItem);
-                ptrPosItem = (IntPtr)((int)ptrPosItem + 4);
+                ptrPosItem = (IntPtr)(ptrPosItem.ToInt64() + 4);
                 updatedItem._init2Check = _funcItems[i]._init2Check;
-                ptrPosItem = (IntPtr)((int)ptrPosItem + 4);
+                ptrPosItem = (IntPtr)(ptrPosItem.ToInt64() + 4);
                 updatedItem._pShKey = _funcItems[i]._pShKey;
-                ptrPosItem = (IntPtr)((int)ptrPosItem + IntPtr.Size);
+                ptrPosItem = (IntPtr)(ptrPosItem.ToInt64() + IntPtr.Size);
 
                 _funcItems[i] = updatedItem;
             }