🚀 go-pugleaf

Hello,

i have to create a dll which functions will be in us ein siemens pcs7 wincc.
To load a function from a dll, my customer use following code:

Here is an exmaple how to use pcs7 code to load a  function from a dll:

void LoadDLL()
{
  #pragma code ("Kernel32.DLL");
  HINSTANCE LoadLibrary(LPCTSTR lpLibFileName);
  #pragma code();
  HINSTANCE dllhinst = LoadLibrary("check.dll");
}

My function in my dll is declares like:

extern "C" int __declspec(dllexport) __stdcall CheckVersion()
{
// calculations
return value;
}
//--------------------------------------------------------------------------
-

My pcs7 Code for the customer looks like:

void LoadDLL()
{
  #pragma code ("check.DLL");
  int CheckVersion();
  #pragma code();

  int val = CheckVersion();

  if (val == -1)
  {
     // nicht registriert
  }
  else
  {
     // registriert
  }

}

As i am not able to check this i am not shure is this is correkt. What do
you think.Will my customer be able to run this function? What should i
change that he is able.

philipp