# Demonstrates using a taskbar icon to create and navigate between desktops
import win32api, win32con, win32gui, win32service, win32process
import pywintypes
import traceback, _thread, time
import io
## "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=io.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)