MAINWND.H

// data type and constant definitions used by mainwnd.c 
#include <pdh.h> 
 
typedef struct _CounterInfoBlock { 
    struct _CounterInfoBlock *pNext; 
    TCHAR   szCounterPath[MAX_PATH]; 
    HCOUNTER    hCounter; 
    PPDH_RAW_COUNTER    pCounterArray; 
    DWORD       dwFirstIndex; 
    DWORD       dwNextIndex; 
    DWORD       dwLastIndex; 
    PDH_STATISTICS  pdhCurrentStats; 
    double      dLastValue; 
} CIB, *PCIB; 
 
// global functions found in mainwnd.c 
LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam);