Exposed IM_ARRAYSIZE() in imgui.h

imgui.h

@@ -29,6 +29,7 @@
 #define IM_ASSERT(_EXPR)    assert(_EXPR)
 #endif
 
+// Helpers
 // Some compilers support applying printf-style warnings to user functions.
 #if defined(__clang__) || defined(__GNUC__)
 #define IM_FMTARGS(FMT)             __attribute__((format(printf, FMT, FMT+1)))
@@ -37,6 +38,7 @@
 #define IM_FMTARGS(FMT)
 #define IM_FMTLIST(FMT)
 #endif
+#define IM_ARRAYSIZE(_ARR)          ((int)(sizeof(_ARR)/sizeof(*_ARR)))
 
 #if defined(__clang__)
 #pragma clang diagnostic push

imgui_internal.h

@@ -79,7 +79,6 @@ extern IMGUI_API ImGuiContext* GImGui;  // Current implicit ImGui context pointe
 // Helpers
 //-----------------------------------------------------------------------------
 
-#define IM_ARRAYSIZE(_ARR)      ((int)(sizeof(_ARR)/sizeof(*_ARR)))
 #define IM_PI                       3.14159265358979323846f
 #define IM_OFFSETOF(_TYPE,_ELM)     ((size_t)&(((_TYPE*)0)->_ELM))