Python _winreg.HKEY_CLASSES_ROOT Examples

def test_registry_read_error(self):
        import _winreg

        class MockWinreg(object):
            def OpenKey(self, key, name):
                if key != _winreg.HKEY_CLASSES_ROOT:
                    raise WindowsError(5, "Access is denied")
                return _winreg.OpenKey(key, name)
            def __getattr__(self, name):
                return getattr(_winreg, name)

        mimetypes._winreg = MockWinreg()
        try:
            mimetypes.init()
        finally:
            mimetypes._winreg = _winreg 

def test_registry_read_error(self):
        import _winreg

        class MockWinreg(object):
            def OpenKey(self, key, name):
                if key != _winreg.HKEY_CLASSES_ROOT:
                    raise WindowsError(5, "Access is denied")
                return _winreg.OpenKey(key, name)
            def __getattr__(self, name):
                return getattr(_winreg, name)

        mimetypes._winreg = MockWinreg()
        try:
            mimetypes.init()
        finally:
            mimetypes._winreg = _winreg 

def test_registry_read_error(self):
        import _winreg

        class MockWinreg(object):
            def OpenKey(self, key, name):
                if key != _winreg.HKEY_CLASSES_ROOT:
                    raise WindowsError(5, "Access is denied")
                return _winreg.OpenKey(key, name)
            def __getattr__(self, name):
                return getattr(_winreg, name)

        mimetypes._winreg = MockWinreg()
        try:
            mimetypes.init()
        finally:
            mimetypes._winreg = _winreg 

def MyComputer(self):
        mc_reg = None
        try:
            mc_reg = _winreg.OpenKey(
                _winreg.HKEY_CLASSES_ROOT,
                "CLSID\\{20D04FE0-3AEA-1069-A2D8-08002B30309D}"
            )
            value, type = _winreg.QueryValueEx(mc_reg, "LocalizedString")
            dll = os.path.split(value.split(",")[0][1:])[1]
            index = -1*int(value.split(",")[1])
            myComputer = LoadString(LoadLibrary(dll), index)
        except:
            myComputer = self.text.myComp
        if mc_reg:
            _winreg.CloseKey(mc_reg)
        return myComputer 

def RunEmailClient(text):
    """Get the path of default email client through querying the
        Windows registry. """
    try:
        em_reg = _winreg.OpenKey(
            _winreg.HKEY_CLASSES_ROOT,
            "\\mailto\\shell\\open\\command"
        )
        EmPath = _winreg.EnumValue(em_reg,0)[1]
        _winreg.CloseKey(em_reg)
        EmPath = EmPath.split('"')[1]
    except:
        eg.PrintError(text.error9)
    else:
        head, tail = os.path.split(EmPath)
        win32api.ShellExecute(
            0,
            None,
            tail,
            None,
            head,
            1
        )
#=============================================================================== 

def GetIrfanViewPath(self):
        """
        Get the path of IrfanView's install-dir through querying the
        Windows registry.
        """
        try:
            iv_reg = _winreg.OpenKey(
                _winreg.HKEY_CLASSES_ROOT,
                "\\Applications\\i_view32.exe\\shell\\open\\command"
            )
            IrfanViewPath =_winreg.QueryValue(iv_reg, None)
            _winreg.CloseKey(iv_reg)
            IrfanViewPath=IrfanViewPath[:-5]
            IrfanViewPath=IrfanViewPath[1:-1]
        except WindowsError:
            IrfanViewPath = None
        return IrfanViewPath 

def getWindowsPDFViewer():
    try:
        import _winreg

        # HKCR/.pdf: gives the class of the PDF program.
        # Example : AcroRead.Document or FoxitReader.Document

        key = _winreg.OpenKey(_winreg.HKEY_CLASSES_ROOT, ".pdf")
        pdfClass = _winreg.QueryValue(key, "")

        # HKCR/<class>/shell/open/command: the path to the PDF viewer program
        # Example: "C:\Program Files\Acrobat 8.0\acroread.exe" "%1"

        key2 = _winreg.OpenKey(
            _winreg.HKEY_CLASSES_ROOT, pdfClass + r"\shell\open\command")

        # Almost every PDF program out there accepts passing the PDF path
        # as the argument, so we don't parse the arguments from the
        # registry, just get the program path.

        path = _winreg.QueryValue(key2, "").split('"')[1]

        if fileExists(path):
            return path
    except:
        pass

    return None

# get a windows environment variable in its native unicode format, or None
# if not found 

def RegisterPythonServer(filename, progids=None, verbose=0):
    if progids:
        if isinstance(progids, basestring):
            progids = [progids]
        # we know the CLSIDs we need, but we might not be an admin user
        # and otherwise unable to register them.  So as long as the progids
        # exist and the DLL points at our version, assume it already is.
        why_not = None
        for progid in progids:
            try:
                clsid = pythoncom.MakeIID(progid)
            except pythoncom.com_error:
                # no progid - not registered.
                break
            # have a CLSID - open it.
            try:
                HKCR = _winreg.HKEY_CLASSES_ROOT
                hk = _winreg.OpenKey(HKCR, "CLSID\\%s" % clsid)
                dll = _winreg.QueryValue(hk, "InprocServer32")
            except WindowsError:
                # no CLSID or InProcServer32 - not good!
                break
            if os.path.basename(dll) != os.path.basename(pythoncom.__file__):
                why_not = "%r is registered against a different Python version (%s)" % (progid, dll)
                break
        else:
            #print "Skipping registration of '%s' - already registered" % filename
            return
    # needs registration - see if its likely!
    try:
        from win32com.shell.shell import IsUserAnAdmin
    except ImportError:
        print "Can't import win32com.shell - no idea if you are an admin or not?"
        is_admin = False
    else:
        try:
            is_admin = IsUserAnAdmin()
        except pythoncom.com_error:
            # old, less-secure OS - assume *is* admin.
            is_admin = True
    if not is_admin:
        msg = "%r isn't registered, but I'm not an administrator who can register it." % progids[0]
        if why_not:
            msg += "\n(registration check failed as %s)" % why_not
        # throw a normal "class not registered" exception - we don't report
        # them the same way as "real" errors.
        raise pythoncom.com_error(winerror.CO_E_CLASSSTRING, msg, None, -1)
    # so theoretically we are able to register it.
    cmd = '%s "%s" --unattended > nul 2>&1' % (win32api.GetModuleFileName(0), filename)
    if verbose:
        print "Registering engine", filename
#       print cmd
    rc = os.system(cmd)
    if rc:
        print "Registration command was:"
        print cmd
        raise RuntimeError("Registration of engine '%s' failed" % filename)