Wer lesen kann ist klar im Vorteil:
Zitat:
Note The callback function specified in the lpfnInternetCallback parameter will not be called on asynchronous operations for the request
handle when the dwContext parameter of HttpOpenRequest is set to zero (INTERNET_NO_CALLBACK), or the connection
handle when the
dwContext handle of InternetConnect is set to
zero (INTERNET_NO_CALLBACK).