diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,5 +1,11 @@
 # Changelog for dear-imgui
 
+## [2.1.2]
+
+- Fixed glfw example build flags.
+- Added `plotLines`.
+- Added `setNextItemOpen`.
+
 ## [2.1.1]
 
 - Build flag fix for MacOS.
@@ -93,6 +99,7 @@
 [2.0.0]: https://github.com/haskell-game/dear-imgui.hs/tree/v2.0.0
 [2.1.0]: https://github.com/haskell-game/dear-imgui.hs/tree/v2.1.0
 [2.1.1]: https://github.com/haskell-game/dear-imgui.hs/tree/v2.1.1
+[2.1.2]: https://github.com/haskell-game/dear-imgui.hs/tree/v2.1.2
 
 [1.87]: https://github.com/ocornut/imgui/releases/tag/v1.87
 [1.86]: https://github.com/ocornut/imgui/releases/tag/v1.86
diff --git a/dear-imgui.cabal b/dear-imgui.cabal
--- a/dear-imgui.cabal
+++ b/dear-imgui.cabal
@@ -1,7 +1,7 @@
 cabal-version: 3.0
 
 name: dear-imgui
-version: 2.1.1
+version: 2.1.2
 author: Oliver Charles
 maintainer: ollie@ocharles.org.uk, aenor.realm@gmail.com
 license: BSD-3-Clause
@@ -329,7 +329,7 @@
   main-is: Main.hs
   hs-source-dirs: examples/glfw
   default-language: Haskell2010
-  if (!flag(examples) || !flag(glfw) || !flag(opengl3))
+  if (!flag(examples) || !flag(glfw) || !flag(opengl2))
     buildable: False
   else
     build-depends: base, GLFW-b, gl, dear-imgui, managed, text
diff --git a/src/DearImGui.hs b/src/DearImGui.hs
--- a/src/DearImGui.hs
+++ b/src/DearImGui.hs
@@ -226,6 +226,7 @@
   , treeNode
   , treePush
   , Raw.treePop
+  , setNextItemOpen
 
     -- ** Selectables
   , selectable
@@ -237,6 +238,7 @@
   , listBox
 
     -- ** Data Plotting
+  , plotLines
   , plotHistogram
 
     -- ** Menus
@@ -1545,6 +1547,9 @@
 treePush label = liftIO do
   Text.withCString label Raw.treePush
 
+-- | Wraps @ImGui::SetNextItemOpen()@.
+setNextItemOpen :: MonadIO m => Bool -> m ()
+setNextItemOpen is_open = Raw.setNextItemOpen (bool 0 1 is_open)
 
 -- | Wraps @ImGui::Selectable()@ with default options.
 selectable :: MonadIO m => Text -> m Bool
@@ -1590,6 +1595,12 @@
 
         return changed
 
+-- | Wraps @ImGui::PlotLines()@.
+plotLines :: MonadIO m => Text -> [CFloat] -> m ()
+plotLines label values = liftIO $
+  withArrayLen values \len valuesPtr ->
+    Text.withCString label \labelPtr ->
+      Raw.plotLines labelPtr valuesPtr (fromIntegral len)
 
 -- | Wraps @ImGui::PlotHistogram()@.
 plotHistogram :: MonadIO m => Text -> [CFloat] -> m ()
diff --git a/src/DearImGui/Raw.hs b/src/DearImGui/Raw.hs
--- a/src/DearImGui/Raw.hs
+++ b/src/DearImGui/Raw.hs
@@ -185,6 +185,7 @@
   , treeNode
   , treePush
   , treePop
+  , setNextItemOpen
 
     -- ** Selectables
   , selectable
@@ -193,6 +194,7 @@
   , listBox
 
     -- * Data Plotting
+  , plotLines
   , plotHistogram
 
     -- ** Menus
@@ -1232,6 +1234,11 @@
   [C.exp| void { TreePop() } |]
 
 
+-- | Wraps @ImGui::SetNextItemOpen()@.
+setNextItemOpen :: (MonadIO m) => CBool -> m ()
+setNextItemOpen is_open = liftIO do
+  [C.exp| void { SetNextItemOpen($(bool is_open)) } |]
+
 -- -- | Wraps @ImGui::Selectable()@.
 -- selectable :: (MonadIO m) => CString -> m Bool
 -- selectable labelPtr = liftIO do
@@ -1250,6 +1257,10 @@
 listBox labelPtr iPtr itemsPtr itemsLen = liftIO do
   (0 /=) <$> [C.exp| bool { ListBox($(char* labelPtr), $(int* iPtr), $(char** itemsPtr), $(int itemsLen)) }|]
 
+-- | Wraps @ImGui::PlotLines()@.
+plotLines :: (MonadIO m) => CString -> Ptr CFloat -> CInt -> m ()
+plotLines labelPtr valuesPtr valuesLen = liftIO do
+  [C.exp| void { PlotLines($(char* labelPtr), $(float* valuesPtr), $(int valuesLen)) } |]
 
 -- | Wraps @ImGui::PlotHistogram()@.
 plotHistogram :: (MonadIO m) => CString -> Ptr CFloat -> CInt -> m ()