判断窗口是否挂起

// ishung.cpp (Windows 95/98/NT/2000)
//
// This example will show you how you can obtain the current status
// of the application.
//
//
// (c)1999 Ashot Oganesyan K, SmartLine, Inc
// mailto:ashot@aha.ru, http://www.protect-me.com, http://www.codepile.com

#include <windows.h>
#include <stdio.h>

// User32!IsHungAppWindow (NT specific!)
//
// The function retrieves the status (running or not responding) of the
// specified application
//
// BOOL IsHungAppWindow(
// HWND hWnd, // handle to main app's window
// );
typedef BOOL (WINAPI *PROCISHUNGAPPWINDOW)(HWND);

// User32!IsHungThread (95/98 specific!)
//
// The function retrieves the status (running or not responding) of the
// specified thread
//
// BOOL IsHungThread(
// DWORD dwThreadId, // The identifier of the main app's window thread
// );
typedef BOOL (WINAPI *PROCISHUNGTHREAD)(DWORD);

PROCISHUNGAPPWINDOW IsHungAppWindow;
PROCISHUNGTHREAD IsHungThread;

void main(int argc, char* argv[])
{
if (argc<2)
{
printf("Usage:\n\nishung.exe hWnd\n");
return;
}

HWND hWnd;
sscanf(argv[1],"%lx",&hWnd);

if (!IsWindow(hWnd))
{
printf("Incorrect window handle\n");
return;
}

HMODULE hUser32 = GetModuleHandle("user32");
if (!hUser32)
return;

IsHungAppWindow = (PROCISHUNGAPPWINDOW)
GetProcAddress( hUser32,
"IsHungAppWindow" );

IsHungThread = (PROCISHUNGTHREAD) GetProcAddress( hUser32,
"IsHungThread" );

if (!IsHungAppWindow && !IsHungThread)
return;

OSVERSIONINFO osver;
osver.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
if (!GetVersionEx(&osver))
return;

BOOL IsHung;

if (osver.dwPlatformId&VER_PLATFORM_WIN32_NT)
IsHung = IsHungAppWindow(hWnd);
else
IsHung = IsHungThread(GetWindowThreadProcessId(hWnd,NULL));

if (IsHung)
printf("Not Responding\n");
else
printf("Running\n");
}