OpenEuphoria

2. Re: How to get the adress machine of any c_proc()

• Posted by jimcbrown (admin) Nov 14, 2013
• 1518 views

atom libr 
 
libr = open_dll("mylibrary.dll") 
 
constant proc_00 = define_c_proc(libr,"ini",{}) 
 
c_proc(proc_00,{}) 

This is the correct way to call the proc. This is the only way that you should be doing this.

-- Now would get the adress machine 32 bits of this c_proc  
-- and then call the proc 

You can do so like this:

atom libr 
 
libr = open_dll("mylibrary.dll") 
 
constant proc_00 = define_c_proc(libr,"ini",{}) 
 
c_proc(proc_00,{}) 
-- Now would get the adress machine 32 bits of this c_proc  
-- and then call the proc 
constant proc_00_addr define_c_var(libr,"ini") 
call(proc_00_addr) 

call(proc_00) 
 

But why would you ever want to do this? There are a lot of gotchas and pitfalls to be aware of when doing this.

4. Re: How to get the adress machine of any c_proc()

• Posted by petelomax Nov 14, 2013
• 1545 views
• Last edited Nov 15, 2013

On windows, open_dll and define_c_func are just wrappers for LoadLibrary and GetProcAddress respectively. You can (if you really really really must) do something like

    kernel32 = open_dll("kernel32.dll") 
    xLoadLibrary = define_c_func(kernel32,"LoadLibraryA",{C_PTR},C_PTR) 
    xGetProcAddress = define_c_func(kernel32, "GetProcAddress",{C_PTR,C_PTR},C_PTR) 

and invoke those via c_func to get the raw addresses and play with those directly (strictly for learning purposes only, and may require some assembly code)

Pete