Declare [Static] Sub procedure_name [Overload] cdecl [Alias "external_name"] [([parameter_list])] [Constructor [priority]] [Static] [Export]

Declare [Static] Function procedure_name [Overload] cdecl [Alias "external_name"] [([parameter_list])] As return_type [Static] [Export]

[Public|Private] Sub procedure_name [Overload] cdecl [Alias "external_name"] [([parameter_list])] [Constructor [priority]] [Static] [Export]

..procedure body..

End Sub

[Public|Private] Function procedure_name [Overload] cdecl [Alias "external_name"] [([parameter_list])] As return_type [Static] [Export]

..procedure body..

End Function

In procedure declarations, cdecl specifies that a procedure will use the cdecl calling convention. In the cdecl calling convention, any parameters are to be passed (pushed onto the stack) in the reverse order in which they are listed, that is, from right to left. The procedures need not preserve the EAX, ECX or EDX registers, and must not clean up the stack (pop any parameters) before it returns - that is left to the calling code.

cdecl is the default calling convention on Linux, the *BSDs, and DOS, unless another calling convention is explicitly specified or implied by one of the Extern Blocks. cdecl is typically the default calling convention for C compilers, and it's used almost exclusively on Unix-like systems.

' declaring 'strcpy' from the standard C library
Declare Function strcpy cdecl Alias "strcpy" (ByVal dest As ZString Ptr, ByVal src As ZString Ptr) As ZString Ptr

• New to FreeBASIC
  
  

• pascal, stdcall
  
• Declare
  
• Sub, Function