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