Community articleCreating a New FunctionCall Structure
Added by IBM contributorIBM on July 26, 2013
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C_ExtensionInit will have to create a FunctionCall structure that contains your custom-built functions.
  1. Declare a pointer to a new FunctionCall structure before you create it in theC_ExtensionInit function. Also, declare any additional variables that you will need in C_ExtensionInit.
  2. FunctionCall *theFunctionCall;
    r_short theError;
    IFXCriteriaMatchingHandler   *returnPtr;

  3. Create a new FunctionCall structure inside C_ExtensionInit by calling the function, IFSObject_AllocateObject. A generic IFSObject will be created and a generic IFSObject pointer will be returned. Cast the returned pointer to a FunctionCall pointer.
    • In the following example, C_ExtensionInit creates a new FunctionCall structure by calling the IFSObject_AllocateObject function. The pointer returned from the call to IFSObject_AllocateObject is cast to a pointer to a FunctionCall structure.
    •       if ((theFunctionCall = (FunctionCall*)IFSObject_AllocateObject(
            == NULL)