Hi,it works here. I am not getting any errors.

Code
///////////////////////////////
#include <acknex.h>
#include <default.c>
#include <windows.h>
///////////////////////////////

int WINAPI SHCreateDirectoryEx(HWND hwnd, LPCSTR pszPath, void* psa);
#define PRAGMA_API SHCreateDirectoryEx;Shell32.dll!SHCreateDirectoryExA

STRING* pif="c:\\xx";
function main()
{
	SHCreateDirectoryEx(NULL, _chr(pif), NULL);

	//verification
	if(GetFileAttributes(_chr(pif))!=0xFFFFFFFF)
	{
		printf("Done!");
	}
}