Method KeyOpt

source/input_object.cpp:207–261

ResultType InputObject::KeyOpt(ResultToken &aResultToken, int aID, int aFlags, ExprTokenType *aParam[], int aParamCount)
{
	_f_param_string(keys, 0);
	_f_param_string(options, 1);

	bool adding = true;
	UCHAR flag, add_flags = 0, remove_flags = 0;
	for (LPTSTR cp = options; *cp; ++cp)
	{
		switch (ctoupper(*cp))
		{
		case '+': adding = true; continue;
		case '-': adding = false; continue;
		case ' ': case '\t': continue;
		case 'E': flag = END_KEY_ENABLED; break;
		case 'I': flag = INPUT_KEY_IGNORE_TEXT; break;
		case 'N': flag = INPUT_KEY_NOTIFY; break;
		case 'S':
			flag = INPUT_KEY_SUPPRESS;
			if (adding)
				remove_flags |= INPUT_KEY_VISIBLE;
			break;
		case 'V':
			flag = INPUT_KEY_VISIBLE;
			if (adding)
				remove_flags |= INPUT_KEY_SUPPRESS;
			break;
		case 'Z': // Zero (reset)
			add_flags = 0;
			remove_flags = INPUT_KEY_OPTION_MASK;
			continue;
		default: _o_throw_value(ERR_INVALID_OPTION, cp);
		}
		if (adding)
			add_flags |= flag; // Add takes precedence over remove, so remove_flags isn't changed.
		else
		{
			remove_flags |= flag;
			add_flags &= ~flag; // Override any previous add.
		}
	}
	
	if (!_tcsicmp(keys, _T("{All}")))
	{
		// Could optimize by using memset() when remove_flags == 0xFF, but that doesn't seem
		// worthwhile since this mode is already faster than SetKeyFlags() with a single key.
		for (int i = 0; i < _countof(input.KeyVK); ++i)
			input.KeyVK[i] = (input.KeyVK[i] & ~remove_flags) | add_flags;
		for (int i = 0; i < _countof(input.KeySC); ++i)
			input.KeySC[i] = (input.KeySC[i] & ~remove_flags) | add_flags;
		return OK;
	}

	return input.SetKeyFlags(keys, false, remove_flags, add_flags);
}