text: //-----------------------------------------------------------------------------
  // COMPILE-TIME OPTIONS FOR DEAR IMGUI
  // Most options (memory allocation, clipboard callbacks, etc.) can be set at runtime via the ImGuiIO structure - ImGui::GetIO().
  //-----------------------------------------------------------------------------
  // A) You may edit imconfig.h (and not overwrite it when updating imgui, or maintain a patch/branch with your modifications to imconfig.h)
  // B) or add configuration directives in your own file and compile with #define IMGUI_USER_CONFIG "myfilename.h" 
  // Note that options such as IMGUI_API, IM_VEC2_CLASS_EXTRA or ImDrawIdx needs to be defined consistently everywhere you include imgui.h, not only for the imgui*.cpp compilation units.
  //-----------------------------------------------------------------------------
  
  #pragma once
  
  //---- Define assertion handler. Defaults to calling assert().
  //#define IM_ASSERT(_EXPR)  MyAssert(_EXPR)
  
  //---- Define attributes of all API symbols declarations, e.g. for DLL under Windows.
  //#define IMGUI_API __declspec( dllexport )
  //#define IMGUI_API __declspec( dllimport )
  
  //---- Don't define obsolete functions names. Consider enabling from time to time or when updating to reduce likelihood of using already obsolete function/names
  //#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS
  
  //---- Don't implement default handlers for Windows (so as not to link with certain functions)
  //#define IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS   // Don't use and link with OpenClipboard/GetClipboardData/CloseClipboard etc.
  //#define IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS         // Don't use and link with ImmGetContext/ImmSetCompositionWindow.
  
  //---- Don't implement demo windows functionality (ShowDemoWindow()/ShowStyleEditor()/ShowUserGuide() methods will be empty)
  //---- It is very strongly recommended to NOT disable the demo windows. Please read the comment at the top of imgui_demo.cpp.
  //#define IMGUI_DISABLE_DEMO_WINDOWS
  
  //---- Don't implement ImFormatString(), ImFormatStringV() so you can reimplement them yourself.
  //#define IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS
  
  //---- Include imgui_user.h at the end of imgui.h as a convenience
  //#define IMGUI_INCLUDE_IMGUI_USER_H
  
  //---- Pack colors to BGRA8 instead of RGBA8 (if you needed to convert from one to another anyway)
  //#define IMGUI_USE_BGRA_PACKED_COLOR
  
  //---- Implement STB libraries in a namespace to avoid linkage conflicts (defaults to global namespace)
  //#define IMGUI_STB_NAMESPACE     ImGuiStb
  
  //---- Define constructor and implicit cast operators to convert back<>forth from your math types and ImVec2/ImVec4.
  // This will be inlined as part of ImVec2 and ImVec4 class declarations.
  /*
  #define IM_VEC2_CLASS_EXTRA                                                 \
          ImVec2(const MyVec2& f) { x = f.x; y = f.y; }                       \
          operator MyVec2() const { return MyVec2(x,y); }
  
  #define IM_VEC4_CLASS_EXTRA                                                 \
          ImVec4(const MyVec4& f) { x = f.x; y = f.y; z = f.z; w = f.w; }     \
          operator MyVec4() const { return MyVec4(x,y,z,w); }
  */
  
  //---- Use 32-bit vertex indices (instead of default 16-bit) to allow meshes with more than 64K vertices. Render function needs to support it.
  //#define ImDrawIdx unsigned int
  
  //---- Tip: You can add extra functions within the ImGui:: namespace, here or in your own headers files.
  /*
  namespace ImGui
  {
      void MyFunction(const char* name, const MyMatrix44& v);
  }
  */
  