OpenEuphoria

1. Problem with Writing Wrapper

• Posted by Lone_EverGreen_Ranger Jun 07, 2013
• 1227 views

Hello,

I am trying to test my SFML 2.0 wrapper that I wrote for Euphoria. Every time I try to use a function or procedure call from it, it says it has been not declared. For example, in the below code, it says sfClock_create has not been declared. Here is my code. Anyone know why I would be getting these errors, even though they are declared. I'm using Windows 7 64-bit, Eu 4.0.5

EuSFML.ew (include file)

include std/machine.e 
 
include std/dll.e 
 
 
 
constant EXIT_SUCCESS = 1 
 
constant EXIT_FAILURE = 0 
 
atom sf_sys = open_dll("csfml-system-2.dll") 
 
 
 
if sf_sys = -1 then 
 
  puts(1,"Could not open csfml-system-2.dll!\n") 
 
  abort(0) 
 
end if 
 
 
 
constant xsfClock_create = define_c_func(sf_sys,"sfClock_create",{},C_POINTER) 
 
function sfClock_create() 
 
 
 
return c_func(xsfClock_create,{}) 
 
 
 
end function 
 

The test code

 
include EuSFML.ew 
 
atom clock 
clock = sfClock_create() 
 

3. Re: Problem with Writing Wrapper

• Posted by jimcbrown (admin) Jun 07, 2013
• 1202 views

Your code doesn't declare the function. You need to declare it (and make it public). E.g.

include std/machine.e 
 
include std/dll.e 
 
 
 
constant EXIT_SUCCESS = 1 
 
constant EXIT_FAILURE = 0 
 
atom sf_sys = open_dll("csfml-system-2.dll") 
 
 
 
if sf_sys = -1 then 
 
  puts(1,"Could not open csfml-system-2.dll!\n") 
 
  abort(0) 
 
end if 
 
 
 
constant xsfClock_create = define_c_func(sf_sys,"sfClock_create",{},C_POINTER) 
 
public function sfClock_create() 
	return c_func(xsfClock_create, {}) 
end function 

Remember, C functions are not visible to Euphoria code. You must interface via c_func()/c_proc().

5. Re: Problem with Writing Wrapper

• Posted by ssallen Jun 07, 2013
• 1219 views

We are going to need to see the rest of your code to help with that. Can you show us the current code?