golang1.8使用cgo获取进程是否假死

package main

import (
    "flag"
)

/*
#include <stdio.h>
#include <windows.h>
#include <Winuser.h>
typedef struct EnumFunArg
{
    HWND      hWND;
    DWORD    dwProcessId;
}EnumFunArg,*LPEnumFunArg;

BOOL CALLBACK lpEnumFunc(HWND hwnd, LPARAM lParam)
{
    EnumFunArg  *pArg = (LPEnumFunArg)lParam;
    DWORD  processId;
    GetWindowThreadProcessId(hwnd, &processId);
    if( processId == pArg->dwProcessId)
    {
        pArg->hWND = hwnd;
        return FALSE;
    }
    return TRUE;
}

int ReturnWnd(DWORD processID)
{
   BOOL re = FALSE;
   EnumFunArg wi;
   wi.dwProcessId = processID;
   wi.hWND   =  NULL;
   EnumWindows(lpEnumFunc,(LPARAM)&wi);
   if(wi.hWND)
   {
        if (IsHungAppWindow(wi.hWND))
        {
            return ;
        }
   }
   else
   {
        return -;
   }
    return ;
}
*/
import "C"

func main() {
    pid := flag.Int("p", , "-p 1001")
    flag.Parse()
    h := C.ReturnWnd(C.DWORD(*pid))
    switch h {
    case :
        println("程序有响应")
    case :
        println("程序无响应")
    case -:
        println("无法获取窗口")
    }
}