diff --git a/windows/bits.py b/windows/bits.py
new file mode 100644
index 0000000..3c00298
--- /dev/null
+++ b/windows/bits.py
@@ -0,0 +1,92 @@
+import windows
+import windows.com
+from  windows.generated_def.interfaces import IBackgroundCopyManager, IEnumBackgroundCopyJobs, IBackgroundCopyJob, IBackgroundCopyCallback, COMImplementation, IUnknown
+from windows.generated_def import DWORD, BG_JOB_TYPE_UPLOAD, BG_JOB_STATE_SUSPENDED
+
+BackgroundCopyManager = windows.com.IID.from_string("4991d34b-80a1-4291-83b6-3328366b9097")
+BackgroundCopyManager1_5 = windows.com.IID.from_string("f087771f-d74f-4c1a-bb8a-e16aca9124ea")
+BackgroundCopyManager2_0 = windows.com.IID.from_string("6d18ad12-bde3-4393-b311-099c346e6df9s")
+BackgroundCopyManager2_5 = windows.com.IID.from_string("03ca98d6-ff5d-49b8-abc6-03dd84127020")
+BackgroundCopyManager3_0 = windows.com.IID.from_string("659cdea7-489e-11d9-a9cd-000d56965251")
+
+
+
+
+import threading
+
+
+
+class BitsCopyCallback(COMImplementation):
+    IMPLEMENT = IBackgroundCopyCallback
+
+    def JobError(self, job, error):
+        return True
+
+    def JobTransferred(self, this, job):
+        #copy_terminated.set()
+        return True
+
+    def JobModification(self, job, reserved):
+        return True
+
+class BitsCopyCallbackSetEvent(BitsCopyCallback):
+    def __init__(self, event):
+        super(BitsCopyCallbackSetEvent, self).__init__()
+        self.event = event
+
+    def JobError(self, job, error):
+        self.event.set()
+        return True
+
+    def JobTransferred(self, this, job):
+        self.event.set()
+        return True
+
+class BitsCopyManager(IBackgroundCopyManager):
+    @property
+    def jobs(self):
+        jobsenum  = IEnumBackgroundCopyJobs()
+        self.EnumJobs(0, jobsenum)
+        res = []
+        nbretrieved = DWORD()
+        while True:
+            current = BitsCopyJob()
+            jobsenum.Next(1, current, nbretrieved)
+            if not nbretrieved.value:
+                break
+            res.append(current)
+        return res
+
+    def create(self, name, jobtype):
+        myjob_uuid = windows.com.IID()
+        newjob = BitsCopyJob()
+        self.CreateJob(name, jobtype, myjob_uuid, newjob)
+        return newjob
+
+class BitsCopyJob(IBackgroundCopyJob):
+    @property
+    def iid(self):
+        res = windows.com.IID()
+        self.GetId(res)
+        res.update_strid()
+        return res
+
+    @property
+    def state(self):
+        x = windows.generated_def.BG_JOB_STATE()
+        self.GetState(x)
+        return x
+
+    def wait(self):
+        if self.state.value == BG_JOB_STATE_SUSPENDED:
+            raise ValueError("Cannot wait a BG_JOB_STATE_SUSPENDED job")
+        event = threading.Event()
+        callback_event = BitsCopyCallbackSetEvent(event)
+        self.SetNotifyInterface(callback_event)
+        self.SetNotifyFlags(1 | 2) # BG_NOTIFY_JOB_TRANSFERRED | BG_NOTIFY_JOB_ERROR
+        event.wait()
+        return True
+
+
+    def __repr__(self):
+        return '<{0} iid="{1}" at {2:#08x}>'.format(type(self).__name__, self.iid.to_string(), id(self))
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