Get state of IndependentModuleDev?

SetIgorOption IndependentModuleDev=?; Print V_Flag

Great! Thanks.

Menu "Macros", dynamic
	MacrosMenuIMD(),/Q, toggle_IMD()
end

Function/S MacrosMenuIMD()
	string rtnstr = "Toggle IMD "
	string cmdq = "SetIgorOption independentmoduledev=?"
	Execute cmdq
	variable/G v_flag
	if (v_flag)
		rtnstr += "OFF"
	else
		rtnstr += "ON"
	endif
	killvariables/Z v_flag
	return rtnstr
end

Function toggle_IMD()
	string cmdq = "SetIgorOption independentmoduledev=?"
	string cmdt = "SetIgorOption independentmoduledev=!(v_flag)"
	Execute cmdq
	variable/G v_flag
	if (v_flag)
		print "Independent Module Development OFF"
	else
		print "Independent Module Development ON"	
	endif
	Execute cmdt
	killvariables/Z v_flag
	return 0
end

An alternative using a menu checkmark:

menu "Macros", dynamic
    MacrosMenuIMD(), /Q, toggle_IMD()
end

function/S MacrosMenuIMD()
    string rtnstr = "IM development"
    string cmdq = "SetIgorOption IndependentModuleDev=?"
    Execute cmdq
    variable/G v_flag
    if (v_flag)
        rtnstr += "!" + num2char(18)
    endif
    KillVariables/Z v_flag
    return rtnstr
end

function toggle_IMD()
    string cmdq = "SetIgorOption IndependentModuleDev=?"
    string cmdt = "SetIgorOption IndependentModuleDev=!(v_flag)"
    Execute cmdq
    variable/G v_flag
    if (v_flag)
        Print "Independent Module Development OFF"
    else
        Print "Independent Module Development ON"
    endif
    Execute cmdt
    KillVariables/Z v_flag
    return 0
end