client/windows/context_menu.py

# Derived from Python24\Lib\site-packages\win32comext\shell\demos\servers\context_menu.py
# >> a bit more complex <<

# Acknowledgements to Mark Hammond for his "Python for Windows extensions"
# http://python.net/crew/mhammond/

# ... and Michael Dunn for his 
# "The Complete Idiot's Guide to Writing Shell Extensions"-series at "The Code Project"
# http://www.codeproject.com/shell/shellextguideindex.asp

# You're great guys!


import pythoncom
from win32com.shell import shell, shellcon
import win32gui, win32gui_struct
import win32con
import win32api, winerror

IContextMenu_Methods = ["QueryContextMenu", "InvokeCommand", "GetCommandString"]
IShellExtInit_Methods = ["Initialize"]

class ShellExtension:
    _reg_progid_ = "Mess.ShellExtension.ContextMenu"
    _reg_name_ = "MessClient"
    _reg_desc_ = "Mess Shell Extension"
    _reg_clsid_ = "{CED0336C-C9EE-4a7f-8D7F-C660393C381F}"
    _com_interfaces_ = [shell.IID_IShellExtInit, shell.IID_IContextMenu]
    _public_methods_ = IContextMenu_Methods + IShellExtInit_Methods

    def Initialize(self, pidlFolder, dataobj, hkey):
        print "Init", pidlFolder, dataobj, hkey
        self.dataobj = dataobj

    def QueryContextMenu(self, hMenu, indexMenu, idCmdFirst, idCmdLast, uFlags):
        
        # debug
        print "QCM", hMenu, indexMenu, idCmdFirst, idCmdLast, uFlags

        # clicking on a directory background leaves us with dataobj == None
        if self.dataobj:
          
          # query the items clicked on
          format_etc = win32con.CF_HDROP, None, 1, -1, pythoncom.TYMED_HGLOBAL
          sm = self.dataobj.GetData(format_etc)
          
          # how many items are selected
          num_files = shell.DragQueryFile(sm.data_handle, -1)
        
          # grab all items
          self.files_selected = []
          for i in range(0, num_files):
            fname = shell.DragQueryFile(sm.data_handle, i)
            if fname == 0: continue
            self.files_selected.append(fname)


        # calculate items to be added to context menu
        items = []
        
        # CMF_NORMAL: e.g. files on desktop
        # CMF_VERBSONLY: e.g. shortcuts
        # CMF_EXPLORE: regular files/folders via explorer
        
        # Check == here, since CMF_NORMAL=0
        if ((uFlags & 0x000F) == shellcon.CMF_NORMAL) or (uFlags & shellcon.CMF_VERBSONLY) or (uFlags & shellcon.CMF_EXPLORE):
            if self.dataobj:
              items.append("Add to A&rchive")
              items.append("Named Shortcut &1")
              items.append("Named Shortcut &2")
        elif uFlags & CMF_DEFAULTONLY:
            print "CMF_DEFAULTONLY...\r\n"
            items.append("hello world - 1!")
        else:
            print "** unknown flags", uFlags
            items.append("hello world - 2!")


        # build context menu(s)
        idCmd = idCmdFirst

        # add seperator line
        win32gui.InsertMenu(hMenu, indexMenu,
                            win32con.MF_SEPARATOR|win32con.MF_BYPOSITION,
                            idCmd, None)
        indexMenu += 1
        idCmd += 1
        
        # create main menu entries
        for item in items:
            win32gui.InsertMenu(hMenu, indexMenu,
                                win32con.MF_STRING|win32con.MF_BYPOSITION,
                                idCmd, item)
            indexMenu += 1
            idCmd += 1
        
        # create submenu entries
        hSubmenu = win32gui.CreatePopupMenu()
        win32gui.InsertMenu(hSubmenu, 0,
                            win32con.MF_BYPOSITION,
                            idCmd, "&Settings...")
        idCmd += 1
        
        # insert the submenu into a new container menu entry
        item, extras = win32gui_struct.PackMENUITEMINFO(
          wID = idCmd,
          hSubMenu = hSubmenu,
          text = "&Mess"
        )
        win32gui.InsertMenuItem(hMenu, indexMenu, 1, item)        
        indexMenu += 1
        idCmd += 1

        # add seperator line
        win32gui.InsertMenu(hMenu, indexMenu,
                            win32con.MF_SEPARATOR|win32con.MF_BYPOSITION,
                            idCmd, None)
        indexMenu += 1
        idCmd += 1

        return idCmd-idCmdFirst # Must return number of menu items we added.

    def GetCommandString(self, cmdId, typ):
        #if cmdId == 0:
        #  return "Hello from Python!!"
        #else:
        #  return "abc"
        return self._reg_name_ + "_" + cmdId;

    def InvokeCommand(self, ci):
        mask, hwnd, verb, params, dir, nShow, hotkey, hicon = ci

        # If lpVerb really points to a string, ignore this function call and bail out.
        if win32api.HIWORD( verb ) != 0:
          return winerror.E_INVALIDARG
        
        function_id = win32api.LOWORD(verb)
        # TODO: establish mapping with building the context menus in "QueryContextMenu"
        if function_id == 1:
          method = "Add to archive"
        elif function_id == 2:
          method = "Shortcut 1"
        elif function_id == 3:
          method = "Shortcut 2"
        else:
          method = "Unknown"

        # do action(s)
        if hasattr(self, 'files_selected'):
          win32gui.MessageBox(hwnd, "\n".join(self.files_selected), method, win32con.MB_OK)
        else:
          win32gui.MessageBox(hwnd, "No selection!", method, win32con.MB_OK)


def DllRegisterServer():
    import _winreg
    
    # extended (via http://mail.python.org/pipermail/python-list/2003-December/198390.html)

    # for directory background
    background_key = _winreg.CreateKey(_winreg.HKEY_CLASSES_ROOT, "Directory\\Background\\shellex")
    background_subkey = _winreg.CreateKey(background_key, "ContextMenuHandlers")
    background_subkey2 = _winreg.CreateKey(background_subkey, ShellExtension._reg_name_)
    _winreg.SetValueEx(background_subkey2, None, 0, _winreg.REG_SZ, ShellExtension._reg_clsid_)

    # for folders
    folder_key = _winreg.CreateKey(_winreg.HKEY_CLASSES_ROOT, "Folder\\shellex")
    folder_subkey = _winreg.CreateKey(folder_key, "ContextMenuHandlers")
    folder_subkey2 = _winreg.CreateKey(folder_subkey, ShellExtension._reg_name_)
    _winreg.SetValueEx(folder_subkey2, None, 0, _winreg.REG_SZ, ShellExtension._reg_clsid_)

    # for files
    file_key = _winreg.CreateKey(_winreg.HKEY_CLASSES_ROOT, "*\\shellex")
    file_subkey = _winreg.CreateKey(file_key, "ContextMenuHandlers")
    file_subkey2 = _winreg.CreateKey(file_subkey, ShellExtension._reg_name_)
    _winreg.SetValueEx(file_subkey2, None, 0, _winreg.REG_SZ, ShellExtension._reg_clsid_)

    print ShellExtension._reg_desc_, "registration complete."


def DllUnregisterServer():
    import _winreg

    # extended (via http://mail.python.org/pipermail/python-list/2003-December/198390.html)

    try:
        # for directory background
        background_key = _winreg.DeleteKey(_winreg.HKEY_CLASSES_ROOT,
                                "Directory\\Background\\shellex\\ContextMenuHandlers\\" + ShellExtension._reg_name_)
        # for folders
        folder_key = _winreg.DeleteKey(_winreg.HKEY_CLASSES_ROOT,
                                "Folder\\shellex\\ContextMenuHandlers\\" + ShellExtension._reg_name_)
        # for files
        file_key = _winreg.DeleteKey(_winreg.HKEY_CLASSES_ROOT,
                                "*\\shellex\\ContextMenuHandlers\\" + ShellExtension._reg_name_)
    except WindowsError, details:
        import errno
        if details.errno != errno.ENOENT:
            raise
    print ShellExtension._reg_desc_, "unregistration complete."

if __name__=='__main__':
    from win32com.server import register
    register.UseCommandLine(ShellExtension,
                   finalize_register = DllRegisterServer,
                   finalize_unregister = DllUnregisterServer)
1	# Derived from Python24\Lib\site-packages\win32comext\shell\demos\servers\context_menu.py
2	# >> a bit more complex <<
3
4	# Acknowledgements to Mark Hammond for his "Python for Windows extensions"
5	# http://python.net/crew/mhammond/
6
7	# ... and Michael Dunn for his
8	# "The Complete Idiot's Guide to Writing Shell Extensions"-series at "The Code Project"
9	# http://www.codeproject.com/shell/shellextguideindex.asp
10
11	# You're great guys!
12
13
14	import pythoncom
15	from win32com.shell import shell, shellcon
16	import win32gui, win32gui_struct
17	import win32con
18	import win32api, winerror
19
20	IContextMenu_Methods = ["QueryContextMenu", "InvokeCommand", "GetCommandString"]
21	IShellExtInit_Methods = ["Initialize"]
22
23	class ShellExtension:
24	_reg_progid_ = "Mess.ShellExtension.ContextMenu"
25	_reg_name_ = "MessClient"
26	_reg_desc_ = "Mess Shell Extension"
27	_reg_clsid_ = "{CED0336C-C9EE-4a7f-8D7F-C660393C381F}"
28	_com_interfaces_ = [shell.IID_IShellExtInit, shell.IID_IContextMenu]
29	_public_methods_ = IContextMenu_Methods + IShellExtInit_Methods
30
31	def Initialize(self, pidlFolder, dataobj, hkey):
32	print "Init", pidlFolder, dataobj, hkey
33	self.dataobj = dataobj
34
35	def QueryContextMenu(self, hMenu, indexMenu, idCmdFirst, idCmdLast, uFlags):
36
37	# debug
38	print "QCM", hMenu, indexMenu, idCmdFirst, idCmdLast, uFlags
39
40	# clicking on a directory background leaves us with dataobj == None
41	if self.dataobj:
42
43	# query the items clicked on
44	format_etc = win32con.CF_HDROP, None, 1, -1, pythoncom.TYMED_HGLOBAL
45	sm = self.dataobj.GetData(format_etc)
46
47	# how many items are selected
48	num_files = shell.DragQueryFile(sm.data_handle, -1)
49
50	# grab all items
51	self.files_selected = []
52	for i in range(0, num_files):
53	fname = shell.DragQueryFile(sm.data_handle, i)
54	if fname == 0: continue
55	self.files_selected.append(fname)
56
57
58	# calculate items to be added to context menu
59	items = []
60
61	# CMF_NORMAL: e.g. files on desktop
62	# CMF_VERBSONLY: e.g. shortcuts
63	# CMF_EXPLORE: regular files/folders via explorer
64
65	# Check == here, since CMF_NORMAL=0
66	if ((uFlags & 0x000F) == shellcon.CMF_NORMAL) or (uFlags & shellcon.CMF_VERBSONLY) or (uFlags & shellcon.CMF_EXPLORE):
67	if self.dataobj:
68	items.append("Add to A&rchive")
69	items.append("Named Shortcut &1")
70	items.append("Named Shortcut &2")
71	elif uFlags & CMF_DEFAULTONLY:
72	print "CMF_DEFAULTONLY...\r\n"
73	items.append("hello world - 1!")
74	else:
75	print "** unknown flags", uFlags
76	items.append("hello world - 2!")
77
78
79	# build context menu(s)
80	idCmd = idCmdFirst
81
82	# add seperator line
83	win32gui.InsertMenu(hMenu, indexMenu,
84	win32con.MF_SEPARATOR\|win32con.MF_BYPOSITION,
85	idCmd, None)
86	indexMenu += 1
87	idCmd += 1
88
89	# create main menu entries
90	for item in items:
91	win32gui.InsertMenu(hMenu, indexMenu,
92	win32con.MF_STRING\|win32con.MF_BYPOSITION,
93	idCmd, item)
94	indexMenu += 1
95	idCmd += 1
96
97	# create submenu entries
98	hSubmenu = win32gui.CreatePopupMenu()
99	win32gui.InsertMenu(hSubmenu, 0,
100	win32con.MF_BYPOSITION,
101	idCmd, "&Settings...")
102	idCmd += 1
103
104	# insert the submenu into a new container menu entry
105	item, extras = win32gui_struct.PackMENUITEMINFO(
106	wID = idCmd,
107	hSubMenu = hSubmenu,
108	text = "&Mess"
109	)
110	win32gui.InsertMenuItem(hMenu, indexMenu, 1, item)
111	indexMenu += 1
112	idCmd += 1
113
114	# add seperator line
115	win32gui.InsertMenu(hMenu, indexMenu,
116	win32con.MF_SEPARATOR\|win32con.MF_BYPOSITION,
117	idCmd, None)
118	indexMenu += 1
119	idCmd += 1
120
121	return idCmd-idCmdFirst # Must return number of menu items we added.
122
123	def GetCommandString(self, cmdId, typ):
124	#if cmdId == 0:
125	# return "Hello from Python!!"
126	#else:
127	# return "abc"
128	return self._reg_name_ + "_" + cmdId;
129
130	def InvokeCommand(self, ci):
131	mask, hwnd, verb, params, dir, nShow, hotkey, hicon = ci
132
133	# If lpVerb really points to a string, ignore this function call and bail out.
134	if win32api.HIWORD( verb ) != 0:
135	return winerror.E_INVALIDARG
136
137	function_id = win32api.LOWORD(verb)
138	# TODO: establish mapping with building the context menus in "QueryContextMenu"
139	if function_id == 1:
140	method = "Add to archive"
141	elif function_id == 2:
142	method = "Shortcut 1"
143	elif function_id == 3:
144	method = "Shortcut 2"
145	else:
146	method = "Unknown"
147
148	# do action(s)
149	if hasattr(self, 'files_selected'):
150	win32gui.MessageBox(hwnd, "\n".join(self.files_selected), method, win32con.MB_OK)
151	else:
152	win32gui.MessageBox(hwnd, "No selection!", method, win32con.MB_OK)
153
154
155	def DllRegisterServer():
156	import _winreg
157
158	# extended (via http://mail.python.org/pipermail/python-list/2003-December/198390.html)
159
160	# for directory background
161	background_key = _winreg.CreateKey(_winreg.HKEY_CLASSES_ROOT, "Directory\\Background\\shellex")
162	background_subkey = _winreg.CreateKey(background_key, "ContextMenuHandlers")
163	background_subkey2 = _winreg.CreateKey(background_subkey, ShellExtension._reg_name_)
164	_winreg.SetValueEx(background_subkey2, None, 0, _winreg.REG_SZ, ShellExtension._reg_clsid_)
165
166	# for folders
167	folder_key = _winreg.CreateKey(_winreg.HKEY_CLASSES_ROOT, "Folder\\shellex")
168	folder_subkey = _winreg.CreateKey(folder_key, "ContextMenuHandlers")
169	folder_subkey2 = _winreg.CreateKey(folder_subkey, ShellExtension._reg_name_)
170	_winreg.SetValueEx(folder_subkey2, None, 0, _winreg.REG_SZ, ShellExtension._reg_clsid_)
171
172	# for files
173	file_key = _winreg.CreateKey(_winreg.HKEY_CLASSES_ROOT, "*\\shellex")
174	file_subkey = _winreg.CreateKey(file_key, "ContextMenuHandlers")
175	file_subkey2 = _winreg.CreateKey(file_subkey, ShellExtension._reg_name_)
176	_winreg.SetValueEx(file_subkey2, None, 0, _winreg.REG_SZ, ShellExtension._reg_clsid_)
177
178	print ShellExtension._reg_desc_, "registration complete."
179
180
181	def DllUnregisterServer():
182	import _winreg
183
184	# extended (via http://mail.python.org/pipermail/python-list/2003-December/198390.html)
185
186	try:
187	# for directory background
188	background_key = _winreg.DeleteKey(_winreg.HKEY_CLASSES_ROOT,
189	"Directory\\Background\\shellex\\ContextMenuHandlers\\" + ShellExtension._reg_name_)
190	# for folders
191	folder_key = _winreg.DeleteKey(_winreg.HKEY_CLASSES_ROOT,
192	"Folder\\shellex\\ContextMenuHandlers\\" + ShellExtension._reg_name_)
193	# for files
194	file_key = _winreg.DeleteKey(_winreg.HKEY_CLASSES_ROOT,
195	"*\\shellex\\ContextMenuHandlers\\" + ShellExtension._reg_name_)
196	except WindowsError, details:
197	import errno
198	if details.errno != errno.ENOENT:
199	raise
200	print ShellExtension._reg_desc_, "unregistration complete."
201
202	if __name__=='__main__':
203	from win32com.server import register
204	register.UseCommandLine(ShellExtension,
205	finalize_register = DllRegisterServer,
206	finalize_unregister = DllUnregisterServer)
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