一个典型的例子解决常见的高级Windows程序设计问题[2]

//---------------------------------------------------------------------------------------

//
// user defined message for callback function
//

#define user_wm_notifyicon    wm_user + 0x001

//
// user defined message for display icon on statue bar of windows
//

#define user_wm_showappiconic   wm_user + 0x002 

//
// user defined message for file change notification
//

#define wm_user_thread_file_changed  wm_user + 0x003

//
// the structure was defined for the input of thread function parameters
//

typedef struct tagthreadparam
{
 hwnd hwnd;
 cevent *pevent;
}threadparam;

//
// worker thread function declare
//

uint threadfunction(lpvoid pparam);

//---------------------------------------------------------------------------------------
//
// comments: message map of cmainwindow class
//
//---------------------------------------------------------------------------------------

begin_message_map (cmainwindow, cwnd)
 on_wm_create()
 on_message(user_wm_notifyicon,onmyiconnotify)
 on_message(user_wm_showappiconic,onshowappiconic)
 on_wm_syscommand()
 on_wm_close()

 on_bn_clicked(idc_browse,onbrowsebutonclicked)
 on_en_change(ide_obj_path,onobjectpathchanged)
 
 on_bn_clicked(idc_ok,onokbuttonclicked)
 on_bn_clicked(ide_obj_path,onobjectpathchanged)
 on_bn_clicked(idc_exit_fi,onexitbuttonclicked)

 on_message(wm_user_thread_file_changed,onfilechanged)
end_message_map ()

//
// defination of application object
//

cmyapp myapp;

//---------------------------------------------------------------------------------------
//
// function: bool cmyapp::initinstance ()
// purpose:  cmyapp member functions
// comments:
//
//---------------------------------------------------------------------------------------

bool cmyapp::initinstance ()
{
    m_pmainwnd = new cmainwindow;

   m_pmainwnd->showwindow (m_ncmdshow);
    m_pmainwnd->updatewindow ();

 //
 // send mywm_showappiconic so that the window can be
 // hide after programe runed and the icon should be
 // displayed on the statue area of task bar
 //

 m_pmainwnd -> postmessage( user_wm_showappiconic );
    return true;
}

//---------------------------------------------------------------------------------------
//
// function: cmainwindow::cmainwindow ()
// purpose:  the constructor of the cmainwindow class
// comments:
//
//---------------------------------------------------------------------------------------

cmainwindow::cmainwindow ():
 m_eventstopwatch(false,true)
{
 //
 // register a wndclass.
 //

 cstring strwndclass = afxregisterwndclass (
        cs_dblclks,          // class style
        afxgetapp ()->loadstandardcursor (idc_arrow),   // class cursor
        (hbrush) (color_3dface + 1),     // background brush
  afxgetapp ()->loadicon( idr_file_inspector)  // class icon
    );

 //
 // create a window.
 //

 createex (0, strwndclass, _t ("file/folder supervisor"),
        ws_overlapped | ws_sysmenu | ws_caption | ws_minimizebox,
        cw_usedefault, cw_usedefault, cw_usedefault, cw_usedefault,
        null, null);

 //
 // size the window.
 //
  
 crect rect (80,70, 452, 400);
    calcwindowrect (&rect);

    setwindowpos (null, 0, 0, rect.width (), rect.height (),