Suraj Barkale schrieb:
[about finding typelibs for COM objects starting from the progid]
COM IDEs usually include a COM typelib browser which lists the type libraries
installed on the system and offering to "import" them into a project.
For example, PythonWin has such a utility which creates the win32com wrapper
for the selected typelib. AFAIU these utilities scan the registry to find
registered typelibs. I have attached some code that takes a somewhat different
approach (but it could possibly be a starting point to write such a browser).
The script tries to find the typelibrary starting with a progid. For some
progids this approach works, for others it doesn't (Word, for example).
FWIW
Thomas
"""
from comtypes import GUID
from comtypes.client import GetModule
import _winreg
##progid = "MSScriptControl.ScriptControl"
##progid = "Word.Application"
progid = "InternetExplorer.Application"
def find_typelib_guid(progid):
"""Read the registry to find a typelib associated with 'progid'."""
guid = GUID.from_progid(progid)
key = _winreg.OpenKey(_winreg.HKEY_CLASSES_ROOT,
"CLSID\\%s" % guid,
_winreg.KEY_READ)
return _winreg.QueryValue(key, "Typelib")
def enum_subkeys(root, key):
"""Generator that yields the names of all subkeys"""
key = _winreg.OpenKey(root, key)
index = 0
while 1:
try:
yield _winreg.EnumKey(key, index)
except WindowsError, details:
if details[0] == 259:
raise StopIteration
raise
index += 1
def get_typelib(libid):
for version in enum_subkeys(_winreg.HKEY_CLASSES_ROOT,
"Typelib\\%s" % libid):
# Full name of the type library
libname = _winreg.QueryValue(_winreg.HKEY_CLASSES_ROOT,
"Typelib\\%s\\%s" % (libid, version))
# Pathname of the type library
pathname = _winreg.QueryValue(_winreg.HKEY_CLASSES_ROOT,
"Typelib\\%s\\%s\\0\\win32" % (libid,
version))
# version number
major, minor = map(int, version.split("."))
print ((major, minor), pathname, libname)
print GetModule(pathname)
print GetModule((libid, major, minor, 0))
return
libid = find_typelib_guid(progid)
get_typelib(libid)
"""
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