Sendmessage

Hi.
I'm trying to find the listitem of a listview control(mscomctl.ocx) from Visual FoxPro. The problem is, you can't declare types in VFP, hence i can't use the SendMessage API directly from VFP..
I've tried to create a c++ dll, but can't make it work..
I know it has something to do with WPARAM, as you can see, i send the address of the pointer to the struct, but i don't think that's correct..?
It only returns -1.

Dll code:

Code:

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#define DLLEXPORT __declspec(dllexport)
#define LVW_FINDITEM 4153
typedef struct lvwInfo{
  long lX;
  long lY;
  long lFlags;
  long lItm;
  long lSubItm;
} LVWINFO;

int DLLEXPORT CALLBACK getItem(HWND hWnd, int x, int y){
  LVWINFO lvMsg;

  // Send request to listview for listindex 
  lvMsg.lX = x; 
  lvMsg.lY = x; 
  SendMessage(hWnd, LVW_FINDITEM, 0, (WPARAM)&lvMsg); 
  return((lvMsg.lItm)?lvMsg.lItm: -1);
}

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VFP Code, this returns -1:

Code:

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iItem = getItem(List1.hWnd, x, y)

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Are you sure this bit is correct?:

Code:

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lvMsg.lX = x;   
lvMsg.lY = x;

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Thx!