# Demonstrates using a taskbar icon to create and navigate between desktops import win32api, win32con, win32gui, win32service, win32process import pywintypes import traceback, thread, time import cStringIO ## "Shell_TrayWnd" is class of system tray window, broadcasts "TaskbarCreated" when initialized def desktop_name_dlgproc(hwnd,msg,wparam,lparam): """ Handles messages from the desktop name dialog box """ if msg in (win32con.WM_CLOSE,win32con.WM_DESTROY): win32gui.DestroyWindow(hwnd) elif msg == win32con.WM_COMMAND: if wparam == win32con.IDOK: desktop_name=win32gui.GetDlgItemText(hwnd, 72) print 'new desktop name: ',desktop_name win32gui.DestroyWindow(hwnd) create_desktop(desktop_name) elif wparam == win32con.IDCANCEL: win32gui.DestroyWindow(hwnd) def get_new_desktop_name(parent_hwnd): """ Create a dialog box to ask the user for name of desktop to be created """ msgs={win32con.WM_COMMAND:desktop_name_dlgproc, win32con.WM_CLOSE:desktop_name_dlgproc, win32con.WM_DESTROY:desktop_name_dlgproc} # dlg item [type, caption, id, (x,y,cx,cy), style, ex style style=win32con.WS_BORDER|win32con.WS_VISIBLE|win32con.WS_CAPTION|win32con.WS_SYSMENU ## |win32con.DS_SYSMODAL h=win32gui.CreateDialogIndirect( win32api.GetModuleHandle(None), [['One ugly dialog box !',(100,100,200,100),style,0], ['Button','Create', win32con.IDOK, (10,10,30,20),win32con.WS_VISIBLE|win32con.WS_TABSTOP|win32con.BS_HOLLOW|win32con.BS_DEFPUSHBUTTON], ['Button','Never mind', win32con.IDCANCEL, (45,10,50,20),win32con.WS_VISIBLE|win32con.WS_TABSTOP|win32con.BS_HOLLOW], ['Static','Desktop name:',71,(10,40,70,10),win32con.WS_VISIBLE], ['Edit','',72,(75,40,90,10),win32con.WS_VISIBLE]], parent_hwnd, msgs) ## parent_hwnd, msgs) win32gui.EnableWindow(h,True) hcontrol=win32gui.GetDlgItem(h,72) win32gui.EnableWindow(hcontrol,True) win32gui.SetFocus(hcontrol) def new_icon(hdesk,desktop_name): """ Runs as a thread on each desktop to create a new tray icon and handle its messages """ global id id=id+1 hdesk.SetThreadDesktop() ## apparently the threads can't use same hinst, so each needs its own window class windowclassname='PythonDesktopManager'+desktop_name wc = win32gui.WNDCLASS() wc.hInstance = win32api.GetModuleHandle(None) wc.lpszClassName = windowclassname wc.style = win32con.CS_VREDRAW | win32con.CS_HREDRAW | win32con.CS_GLOBALCLASS wc.hCursor = win32gui.LoadCursor( 0, win32con.IDC_ARROW ) wc.hbrBackground = win32con.COLOR_WINDOW wc.lpfnWndProc = icon_wndproc windowclass = win32gui.RegisterClass(wc) style = win32con.WS_OVERLAPPED | win32con.WS_SYSMENU hwnd = win32gui.CreateWindow(windowclass, 'dm_'+desktop_name, win32con.WS_SYSMENU, 0, 0, win32con.CW_USEDEFAULT, win32con.CW_USEDEFAULT, 0, 0, wc.hInstance, None) win32gui.UpdateWindow(hwnd) flags = win32gui.NIF_ICON | win32gui.NIF_MESSAGE | win32gui.NIF_TIP notify_info = (hwnd, id, flags, win32con.WM_USER+20, hicon, 'Desktop Manager (%s)' %desktop_name) window_info[hwnd]=notify_info ## wait for explorer to initialize system tray for new desktop tray_found=0 while not tray_found: try: tray_found=win32gui.FindWindow("Shell_TrayWnd",None) except win32gui.error: traceback.print_exc time.sleep(.5) win32gui.Shell_NotifyIcon(win32gui.NIM_ADD, notify_info) win32gui.PumpMessages() def create_desktop(desktop_name, start_explorer=1): """ Creates a new desktop and spawns a thread running on it Will also start a new icon thread on an existing desktop """ sa=pywintypes.SECURITY_ATTRIBUTES() sa.bInheritHandle=1 try: hdesk=win32service.CreateDesktop(desktop_name, 0, win32con.MAXIMUM_ALLOWED, sa) except win32service.error: traceback.print_exc() errbuf=cStringIO.StringIO() traceback.print_exc(None,errbuf) win32api.MessageBox(0, errbuf.getvalue(), 'Desktop creation failed') return if start_explorer: s=win32process.STARTUPINFO() s.lpDesktop=desktop_name prc_info=win32process.CreateProcess(None, "Explorer.exe",None,None,True,win32con.CREATE_NEW_CONSOLE,None,'c:\\',s) th=thread.start_new_thread(new_icon,(hdesk,desktop_name)) hdesk.SwitchDesktop() def icon_wndproc(hwnd, msg, wp, lp): """ Window proc for the tray icons """ if lp==win32con.WM_LBUTTONDOWN: ## popup menu won't disappear if you don't do this win32gui.SetForegroundWindow(hwnd) curr_desktop=win32service.OpenInputDesktop(0,True,win32con.MAXIMUM_ALLOWED) curr_desktop_name=win32service.GetUserObjectInformation(curr_desktop,win32con.UOI_NAME) winsta=win32service.GetProcessWindowStation() desktops=winsta.EnumDesktops() m=win32gui.CreatePopupMenu() desktop_cnt=len(desktops) ## *don't* create an item 0 for d in range(1, desktop_cnt+1): mf_flags=win32con.MF_STRING ## if you switch to winlogon yourself, there's nothing there and you're stuck if desktops[d-1].lower() in ('winlogon','disconnect'): mf_flags=mf_flags|win32con.MF_GRAYED|win32con.MF_DISABLED if desktops[d-1]==curr_desktop_name: mf_flags=mf_flags|win32con.MF_CHECKED win32gui.AppendMenu(m, mf_flags, d, desktops[d-1]) win32gui.AppendMenu(m, win32con.MF_STRING, desktop_cnt+1, 'Create new ...') win32gui.AppendMenu(m, win32con.MF_STRING, desktop_cnt+2, 'Exit') x,y=win32gui.GetCursorPos() d=win32gui.TrackPopupMenu(m,win32con.TPM_LEFTBUTTON|win32con.TPM_RETURNCMD|win32con.TPM_NONOTIFY, x,y, 0, hwnd, None) win32gui.PumpWaitingMessages() win32gui.DestroyMenu(m) if d==desktop_cnt+1: ## Create new get_new_desktop_name(hwnd) elif d==desktop_cnt+2: ## Exit win32gui.PostQuitMessage(0) win32gui.Shell_NotifyIcon(win32gui.NIM_DELETE, window_info[hwnd]) del window_info[hwnd] origin_desktop.SwitchDesktop() elif d>0: hdesk=win32service.OpenDesktop(desktops[d-1],0,0,win32con.MAXIMUM_ALLOWED) hdesk.SwitchDesktop() return 0 else: return win32gui.DefWindowProc(hwnd, msg, wp, lp) window_info={} origin_desktop=win32service.OpenInputDesktop(0, True, win32con.MAXIMUM_ALLOWED) origin_desktop_name=win32service.GetUserObjectInformation(origin_desktop, win32service.UOI_NAME) hinst=win32api.GetModuleHandle(None) try: hicon=win32gui.LoadIcon(hinst, 1) ## python.exe and pythonw.exe except win32gui.error: hicon=win32gui.LoadIcon(hinst, 135) ## pythonwin's icon id=0 create_desktop(str(origin_desktop_name),0) ## wait for first thread to initialize its icon while not window_info: time.sleep(1) ## exit when last tray icon goes away while window_info: win32gui.PumpWaitingMessages() time.sleep(3)