diff --git a/examples/sdl_opengl3_example/imgui_impl_sdl_gl3.cpp b/examples/sdl_opengl3_example/imgui_impl_sdl_gl3.cpp
index e0193862..7011875a 100644
--- a/examples/sdl_opengl3_example/imgui_impl_sdl_gl3.cpp
+++ b/examples/sdl_opengl3_example/imgui_impl_sdl_gl3.cpp
@@ -152,7 +152,6 @@ bool ImGui_ImplSdlGL3_ProcessEvent(SDL_Event* event)
         }
     case SDL_TEXTINPUT:
         {
-            ImGuiIO& io = ImGui::GetIO();
             io.AddInputCharactersUTF8(event->text.text);
             return true;
         }
diff --git a/examples/sdl_opengl_example/imgui_impl_sdl.cpp b/examples/sdl_opengl_example/imgui_impl_sdl.cpp
index 434a7c22..63ed9f44 100644
--- a/examples/sdl_opengl_example/imgui_impl_sdl.cpp
+++ b/examples/sdl_opengl_example/imgui_impl_sdl.cpp
@@ -131,7 +131,6 @@ bool ImGui_ImplSdl_ProcessEvent(SDL_Event* event)
         }
     case SDL_TEXTINPUT:
         {
-            ImGuiIO& io = ImGui::GetIO();
             io.AddInputCharactersUTF8(event->text.text);
             return true;
         }
diff --git a/imgui.cpp b/imgui.cpp
index 65001eb5..dc1f1142 100644
--- a/imgui.cpp
+++ b/imgui.cpp
@@ -1048,7 +1048,6 @@ ImU32 ImHash(const void* data, int data_size, ImU32 seed)
             // - We don't do 'current += 2; continue;' after handling ### to keep the code smaller.
             if (c == '#' && current[0] == '#' && current[1] == '#')
                 crc = seed;
-
             crc = (crc >> 8) ^ crc32_lut[(crc & 0xFF) ^ c];
         }
     }
@@ -1351,7 +1350,7 @@ void ImGuiStorage::Clear()
 }
 
 // std::lower_bound but without the bullshit
-static ImVector<ImGuiStorage::Pair>::iterator LowerBound(ImVector<ImGuiStorage::Pair>& data, ImU32 key)
+static ImVector<ImGuiStorage::Pair>::iterator LowerBound(ImVector<ImGuiStorage::Pair>& data, ImGuiID key)
 {
     ImVector<ImGuiStorage::Pair>::iterator first = data.begin();
     ImVector<ImGuiStorage::Pair>::iterator last = data.end();
@@ -1373,7 +1372,7 @@ static ImVector<ImGuiStorage::Pair>::iterator LowerBound(ImVector<ImGuiStorage::
     return first;
 }
 
-int ImGuiStorage::GetInt(ImU32 key, int default_val) const
+int ImGuiStorage::GetInt(ImGuiID key, int default_val) const
 {
     ImVector<Pair>::iterator it = LowerBound(const_cast<ImVector<ImGuiStorage::Pair>&>(Data), key);
     if (it == Data.end() || it->key != key)
@@ -1381,12 +1380,12 @@ int ImGuiStorage::GetInt(ImU32 key, int default_val) const
     return it->val_i;
 }
 
-bool ImGuiStorage::GetBool(ImU32 key, bool default_val) const
+bool ImGuiStorage::GetBool(ImGuiID key, bool default_val) const
 {
     return GetInt(key, default_val ? 1 : 0) != 0;
 }
 
-float ImGuiStorage::GetFloat(ImU32 key, float default_val) const
+float ImGuiStorage::GetFloat(ImGuiID key, float default_val) const
 {
     ImVector<Pair>::iterator it = LowerBound(const_cast<ImVector<ImGuiStorage::Pair>&>(Data), key);
     if (it == Data.end() || it->key != key)
@@ -1433,7 +1432,7 @@ void** ImGuiStorage::GetVoidPtrRef(ImGuiID key, void* default_val)
 }
 
 // FIXME-OPT: Need a way to reuse the result of lower_bound when doing GetInt()/SetInt() - not too bad because it only happens on explicit interaction (maximum one a frame)
-void ImGuiStorage::SetInt(ImU32 key, int val)
+void ImGuiStorage::SetInt(ImGuiID key, int val)
 {
     ImVector<Pair>::iterator it = LowerBound(Data, key);
     if (it == Data.end() || it->key != key)
@@ -1444,12 +1443,12 @@ void ImGuiStorage::SetInt(ImU32 key, int val)
     it->val_i = val;
 }
 
-void ImGuiStorage::SetBool(ImU32 key, bool val)
+void ImGuiStorage::SetBool(ImGuiID key, bool val)
 {
     SetInt(key, val ? 1 : 0);
 }
 
-void ImGuiStorage::SetFloat(ImU32 key, float val)
+void ImGuiStorage::SetFloat(ImGuiID key, float val)
 {
     ImVector<Pair>::iterator it = LowerBound(Data, key);
     if (it == Data.end() || it->key != key)
@@ -1460,7 +1459,7 @@ void ImGuiStorage::SetFloat(ImU32 key, float val)
     it->val_f = val;
 }
 
-void ImGuiStorage::SetVoidPtr(ImU32 key, void* val)
+void ImGuiStorage::SetVoidPtr(ImGuiID key, void* val)
 {
     ImVector<Pair>::iterator it = LowerBound(Data, key);
     if (it == Data.end() || it->key != key)
diff --git a/imgui.h b/imgui.h
index 3745d5f4..bee4b465 100644
--- a/imgui.h
+++ b/imgui.h
@@ -62,11 +62,11 @@ struct ImGuiSizeConstraintCallbackData;// Structure used to constraint window si
 struct ImGuiListClipper;            // Helper to manually clip large list of items
 struct ImGuiContext;                // ImGui context (opaque)
 
-// Enumerations (declared as int for compatibility and to not pollute the top of this file)
-typedef unsigned int ImU32;
+// Typedefs and Enumerations (declared as int for compatibility and to not pollute the top of this file)
+typedef unsigned int ImU32;         // 32-bit unsigned integer (typically used to store packed colors)
+typedef unsigned int ImGuiID;       // unique ID used by widgets (typically hashed from a stack of string)
 typedef unsigned short ImWchar;     // character for keyboard input/display
 typedef void* ImTextureID;          // user data to identify a texture (this is whatever to you want it to be! read the FAQ about ImTextureID in imgui.cpp)
-typedef ImU32 ImGuiID;              // unique ID used by widgets (typically hashed from a stack of string)
 typedef int ImGuiCol;               // a color identifier for styling       // enum ImGuiCol_
 typedef int ImGuiStyleVar;          // a variable identifier for styling    // enum ImGuiStyleVar_
 typedef int ImGuiKey;               // a key identifier (ImGui-side enum)   // enum ImGuiKey_