Thomas Lohse wrote:
Hello,
could anyone provide some assistance in using ShellIconOverlay-Handlers
with pythoncom. I implement a kind of file explorer and would like to
call the ShellIconOverlay-Handlers (registered by TortoiseSVN) of the
windows explorer to visualize SVN-states. (I'm NOT about to implement my
own handler).
I can successfully CoCreateInstance these handlers and receive an
implementation of IShellIconOverlayIdentifier interface.
GetOverlayInfo() and GetPriority() both work fine on the interface, but
IsMemberOf(path, attributes) always returns None instead of S_OK,
S_FALSE, E_FAIL or an exception. This is the case whether the passed
path exists or not and is independent of the passed attributes.
Why does IShellIconOverlayIdentifier::IsMemberOf() not work? Any advice
or hint would be very appreciated.
Yours sincerely,
Thomas
My approach to using ShellIconOverlay handlers:
import sys
import pythoncom
import win32api, win32con
from win32com.shell import shell
from winerror import S_OK, S_FALSE, E_FAIL
def CallIconOverlayHandler():
path = sys.argv[1] if len(sys.argv) > 1 else u"C:\\foo"
# Query CLSID for 1st registered IconOverlayHandler
# (there should be handler "Offline Files" at least, since included
in Win)
regKey = win32api.RegOpenKeyEx(win32con.HKEY_LOCAL_MACHINE,
ur"SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\ShellIconOverlayId
entifiers")
name = win32api.RegEnumKey(regKey, 0)
clsId = win32api.RegQueryValue(regKey, name)
win32api.RegCloseKey(regKey)
print u"Using %s: %s" % (name, clsId)
ovHdl = pythoncom.CoCreateInstance(clsId, None,
pythoncom.CLSCTX_INPROC_SERVER,
shell.IID_IShellIconOverlayIdentifier)
#Works fine
print u"GetOverlayInfo():", ovHdl.GetOverlayInfo()
print u"GetPriority():", ovHdl.GetPriority()
#Problem: IsMemberOf returns always None
print u"IsMemberOf(\"%s\", 0):" % path, ovHdl.IsMemberOf(path, 0)
print u"Done."
if __name__ == "__main__":
CallIconOverlayHandler()
Try upgrading to build 212. There was a bug in this method
that was fixed recently.
Roger
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