C++ how to add command option WITHOUT pausing for input

I have a command that is almost identical in behavior except for one boolean. I really don’t want to fork my entire command code just for that boolean. What I’m trying to do is something like “MyCommand(true)” “MyCommand(false)” so I can add the command to the toolbar for with each mode. Can I do this?

I tried using CRhinoGetOption but its Option() method immediately fails no matter what I add to it.

To get around this (for now), I just subclassed the command and changed the bool. Seems to work.

  class CCommandPullCageByNormal : public CCommandPullCage
      m_lockToNormal = true;
    ~CCommandPullCageByNormal() = default;

    UUID CommandUUID() override
      // {9BA9D09B-3536-47EC-93EB-202B2ED3A1BF}
      static const GUID guid =
      { 0x9ba9d09b, 0x3536, 0x47ec,{ 0x93, 0xeb, 0x20, 0x2b, 0x2e, 0xd3, 0xa1, 0xbf } };

      return guid;

    const wchar_t *EnglishCommandName() override { return L"PullCageByNormal"; }

    //CRhinoCommand::result RunCommand(const CRhinoCommandContext &context) override;


  static CCommandPullCageByNormal theCommand;

Hi @gccdragoonkain,

That certainly works. However, if you don’t want another command, you can do something like this:

CRhinoCommand::result CCommandPullCage::RunCommand(const CRhinoCommandContext& context)
  bool bPullByNormal = false;

  CRhinoGetOption go;
  go.SetCommandPrompt(L"Pull by normal?");
  int n_opt = go.AddCommandOption(RHCMDOPTNAME(L"No"));
  int y_opt = go.AddCommandOption(RHCMDOPTNAME(L"Yes"));

  CRhinoGet::result res = go.GetOption();
  if (res == CRhinoGet::option)
    const CRhinoCommandOption* option = go.Option();
    if (nullptr == option) 
      return CRhinoCommand::failure;
    if (n_opt == option->m_option_index)
      bPullByNormal = false;
    else if (y_opt == option->m_option_index)
      bPullByNormal = true;
  else if (res != CRhinoGet::string)
    return CRhinoCommand::cancel;

  if (bPullByNormal)
    RhinoApp().Print(L"Pulling cage by normal.\n");
    RhinoApp().Print(L"Pulling cage.\n");

  return CRhinoCommand::success;

Then make two button macros like this:

PullCage Yes
PullCage No

– Dale

Thanks Dale. I’ll give that a try!

What if I wanted a numeric argument. such as “PullCage 0.025”. Do I have to have preset options?

This one ties into my next task of how do I avoid (for now) implementing rhino GUI dialog boxes