Initialize the PBCallInfo structure

Next, get the method ID for the function you want to call and
initialize a PBCallInfo structure. You pass the signature obtained in
Getting the signature of a
function to the GetMethodID function:

   // PBCallInfo contains arguments and return value
   PBCallInfo ci; 

   // To call the class member function f_mult, 
   // pass its signature as the last argument
   // to GetMethodID 
   pbmethodID mid = session-&gt;GetMethodID(cls, "f_mult",
      PBRT_FUNCTION, "III");

   // Initialize call info structure based on method ID
   session-&gt;InitCallInfo(cls, mid, &amp;ci);

// PBCallInfo contains arguments and return value

PBCallInfo ci;

// To call the class member function f_mult,

// pass its signature as the last argument

// to GetMethodID

pbmethodID mid = session->GetMethodID(cls, "f_mult",

PBRT_FUNCTION, "III");

// Initialize call info structure based on method ID

session->InitCallInfo(cls, mid, &ci);

You could use FindMatchingFunction instead of GetMethodID to get
the method ID. The call would look like this, because f_mult takes two
integer arguments:

   pbmethodID mid = session-&gt;FindMatchingFunction(cls,
      "f_mult", PBRT_FUNCTION, "int, int");

1 2	pbmethodID mid = session->FindMatchingFunction(cls, "f_mult", PBRT_FUNCTION, "int, int");

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Powerbuilder Documentation 2022

August 21, 2023

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