BOOL InternetQueryDataAvailable ( HINTERNET hFile, LPDWORD lpdwNumberOfBytesAvailable, DWORD dwFlags, DWORD_PTR dwContext )
Determines how much data is available to be read.
TRUE on success, FALSE if an error occurred. If INTERNET_FLAG_ASYNC was specified in InternetOpen, and no data is presently available, FALSE is returned with the last error ERROR_IO_PENDING; a callback with status INTERNET_STATUS_REQUEST_COMPLETE will be sent when more data is available.
Declared in "wininet.h". https://source.winehq.org/source/include/wininet.h
Implemented in "dlls/wininet/internet.c". https://source.winehq.org/source/dlls/wininet/internet.c
Debug channel "wininet".
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