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Posted: **Sat Mar 28, 2009 1:21 am**

Am curious about the use of DLLs

I wrote a DLL with a single function

#include <stdio.h>

void hello ()
  {
    printf ("Hello World!\n");
  }

I verified the DLL was written correctly and could actually see the "hello" function name using LibrayFunctionName() but when I run the following code, "Hello World" fails to show up in the console.

Code: Select all

If OpenLibrary(0, "mydll.dll") 
  OpenConsole()
    CallFunction(0,"hello")
    Delay(2000)
    CloseConsole()  
EndIf
CloseLibrary(0)

I rewrote the hello function as an addition returning an integer and that seems to work but why doesn't printf?

Posted: **Sat Mar 28, 2009 10:44 am**

You must use CallCFunction() for C DLLs.

Posted: **Sat Mar 28, 2009 11:19 am**

Have you compiled with Console-mode?

Anyway, in PureBasic on Windows... I don't think there's standard-output pipelining.

cxAlex wrote:You must use CallCFunction() for C DLLs.

No, definately not just for C DLLs. You can specify cdecl or stdcall in C and for cdecl you need CallC and for stdcall you need Call.

PureBasic Forums - English

Using DLLs

Using DLLs