Method UpdateOptions

source/script_menu.cpp:682–745

ResultType UserMenu::UpdateOptions(UserMenuItem *aMenuItem, LPTSTR aOptions)
{
	UINT new_type = aMenuItem->mMenuType; // Set default.

	LPTSTR next_option, option_end;
	bool adding;
	TCHAR orig_char;

	// See GuiType::ControlParseOptions() for comments about how the options are parsed.
	for (next_option = aOptions; *next_option; next_option = option_end)
	{
		next_option = omit_leading_whitespace(next_option);
		if (*next_option == '-')
		{
			adding = false;
			++next_option;
		}
		else
		{
			adding = true;
			if (*next_option == '+')
				++next_option;
		}

		if (!*next_option)
			break;
		if (   !(option_end = StrChrAny(next_option, _T(" \t")))   )
			option_end = next_option + _tcslen(next_option);
		if (option_end == next_option)
			continue;

		orig_char = *option_end;
		*option_end = '\0';
		// End generic option-parsing code; begin menu options.
		if (!_tcsicmp(next_option, _T("Radio"))) if (adding) new_type |= MFT_RADIOCHECK; else new_type &= ~MFT_RADIOCHECK;
		else if (mMenuType == MENU_TYPE_BAR && !_tcsicmp(next_option, _T("Right"))) if (adding) new_type |= MFT_RIGHTJUSTIFY; else new_type &= ~MFT_RIGHTJUSTIFY;
		else if (!_tcsicmp(next_option, _T("Break"))) if (adding) new_type |= MFT_MENUBREAK; else new_type &= ~MFT_MENUBREAK;
		else if (!_tcsicmp(next_option, _T("BarBreak"))) if (adding) new_type |= MFT_MENUBARBREAK; else new_type &= ~MFT_MENUBARBREAK;
		else if (ctoupper(*next_option) == 'P')
			aMenuItem->mPriority = ATOI(next_option + 1);	// invalid priority options are not detected, due to rarity and for brevity. Hence, eg Pxyz, is equivalent to P0.
		else
		{
			*option_end = orig_char;
			if (!ValueError(ERR_INVALID_OPTION, next_option, FAIL_OR_OK)) // invalid option
				return FAIL;
			// Otherwise, user wants to continue.
		}
		*option_end = orig_char;
	}

	if (new_type != aMenuItem->mMenuType)
	{
		if (mMenu)
		{
			MENUITEMINFO mii;
			mii.cbSize = sizeof(mii);
			mii.fMask = MIIM_FTYPE;
			mii.fType = new_type;