请问windows重启时，会向在运行中的程序发送什么消息？？？？急，急急急急!!!!!!!!!!

[tryibest]

我有一个程序在系统中运行(是一个监控程序)，要在机器重启和关闭时，做一些事情，但是不知道要捕捉什么消息，我试过WM_DESTROY,WM_NCDESTROY,WM_CLOSE,都不行，
只是在用ctrl+atl+del强行终止程序时才能触发以上消息，不知道是什么原因，
不知道window在重启和关机时系统会些什么事，想向大家请教???
付上部分源代码
#include <windows.h>

LRESULT CALLBACK WndProc (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam);
int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,
PSTR szCmdLine, int iCmdShow)
{

//启动时执行的代码

static TCHAR szAppName[] = TEXT ("LOGIN") ;
HWND hwnd ;
MSG msg ;
WNDCLASS wndclass ;

wndclass.style = CS_HREDRAW | CS_VREDRAW ;
wndclass.lpfnWndProc = WndProc ;
wndclass.cbClsExtra = 0 ;
wndclass.cbWndExtra = 0 ;
wndclass.hInstance = hInstance ;
wndclass.hIcon = LoadIcon (NULL, IDI_APPLICATION) ;
wndclass.hCursor = LoadCursor (NULL, IDC_ARROW) ;
wndclass.hbrBackground = (HBRUSH) GetStockObject (WHITE_BRUSH) ;
wndclass.lpszMenuName = NULL ;
wndclass.lpszClassName = szAppName ;

if (!RegisterClass (&wndclass))
{
MessageBox (NULL, TEXT ("This program requires Windows NT!"),
szAppName, MB_ICONERROR) ;
return 0 ;
}

hwnd = CreateWindow (szAppName, // window class name
NULL, // window caption
WS_OVERLAPPEDWINDOW, // window style
CW_USEDEFAULT, // initial x position
CW_USEDEFAULT, // initial y position
CW_USEDEFAULT, // initial x size
CW_USEDEFAULT, // initial y size
NULL, // parent window handle
NULL, // window menu handle
hInstance, // program instance handle
NULL) ; // creation parameters
//ShowWindow (hwnd, iCmdShow) ;
//UpdateWindow (hwnd) ;

while (GetMessage (&msg, NULL, 0, 0))
{

TranslateMessage (&msg) ;
DispatchMessage (&msg) ;

}


return msg.wParam ;
}

LRESULT CALLBACK WndProc (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{

switch (message)
{


case WM_DESTROY:
//关机执行的代码

PostQuitMessage (0) ;
return 0 ;
}
return DefWindowProc (hwnd, message, wParam, lParam) ;
}