add TreeNodeEx and related fixes

src/ImGui.NET/ColorTarget.cs

@@ -9,6 +9,7 @@
         TextDisabled,
         WindowBg,
         ChildWindowBg,
+        PopupBg,
         Border,
         BorderShadow,
         /// <summary>
@@ -49,7 +50,6 @@
         PlotHistogram,
         PlotHistogramHovered,
         TextSelectedBg,
-        TooltipBg,
         /// <summary>
         /// darken entire screen when a modal window is active
         /// </summary>

src/ImGui.NET/ImGui.cs

@@ -1052,14 +1052,14 @@ namespace ImGuiNET
             ImGuiNative.igSetTooltip(text);
         }
 
-        public static void SetNextTreeNodeOpened(bool opened)
+        public static void SetNextTreeNodeOpen(bool opened)
         {
-            ImGuiNative.igSetNextTreeNodeOpened(opened, SetCondition.Always);
+            ImGuiNative.igSetNextTreeNodeOpen(opened, SetCondition.Always);
         }
 
-        public static void SetNextTreeNodeOpened(bool opened, SetCondition setCondition)
+        public static void SetNextTreeNodeOpen(bool opened, SetCondition setCondition)
         {
-            ImGuiNative.igSetNextTreeNodeOpened(opened, setCondition);
+            ImGuiNative.igSetNextTreeNodeOpen(opened, setCondition);
         }
 
         public static bool TreeNode(string label)
@@ -1067,6 +1067,11 @@ namespace ImGuiNET
             return ImGuiNative.igTreeNode(label);
         }
 
+        public static bool TreeNodeEx(string label, TreeNodeFlags flags = 0)
+        {
+            return ImGuiNative.igTreeNodeEx(label);
+        }
+
         public static void TreePop()
         {
             ImGuiNative.igTreePop();

src/ImGui.NET/ImGuiNative.cs

@@ -454,6 +454,10 @@ namespace ImGuiNET
         [DllImport(cimguiLib)]
         [return: MarshalAs(UnmanagedType.I1)]
         public static extern bool igTreeNode(string str_label_id);
+        
+        [DllImport(cimguiLib)]
+        [return: MarshalAs(UnmanagedType.I1)]
+        public static extern bool igTreeNodeEx(string label, TreeNodeFlags flags = 0);        
 
         [DllImport(cimguiLib)]
         [return: MarshalAs(UnmanagedType.I1)]
@@ -470,7 +474,7 @@ namespace ImGuiNET
         [DllImport(cimguiLib)]
         public static extern void igTreePop();
         [DllImport(cimguiLib)]
-        public static extern void igSetNextTreeNodeOpened(bool opened, SetCondition cond);
+        public static extern void igSetNextTreeNodeOpen(bool opened, SetCondition cond);
         [DllImport(cimguiLib)]
         [return: MarshalAs(UnmanagedType.I1)]
         public static extern bool igCollapsingHeader(string label, TreeNodeFlags flags = 0);

src/ImGui.NET/TreeNodeFlags.cs

@@ -22,7 +22,7 @@ namespace ImGuiNET
         /// </summary>
         NoTreePushOnOpen = 1 << 3,
         /// <summary>
-        /// Don't do a TreePush() when open (e.g. for CollapsingHeader) = no extra indent nor pushing on ID stack
+        /// Don't automatically and temporarily open node when Logging is active (by default logging will automatically open tree nodes)
         /// </summary>
         NoAutoOpenOnLog = 1 << 4,
         /// <summary>