search for: file_flag_overlap

...have a usb data aquisition device interfaced by mass storage protocol. I open it like: hEcgDrive=CreateFile("\\\\.\\g:", GENERIC_READ | GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL | FILE_FLAG_NO_BUFFERING | FILE_FLAG_WRITE_THROUGH | FILE_FLAG_OVERLAPPED, NULL); for communication I use DeviceIoControl(hEcgDrive, IOCTL_SCSI_PASS_THROUGH_DIRECT, .... with a 'custom' scsi operation code as wrapper. On Wine-1.1.30. under UHU linux (2.6.23.9-1) the program can open the device only if run as root. If run as plain user, CreateFile gives...

...The Comm-Port gets opened with overlapped I/O. However, for WaitCommEvent() we do not specify an overlapped structure. This works fine on NT4 / W2K, but is contrary to the documentation, which specifys that you need to supply an overlapped structure if you do. Quote: "If hFile was opened with FILE_FLAG_OVERLAPPED, the lpOverlapped parameter must not be NULL. It must point to a valid OVERLAPPED structure. If hFile was opened with FILE_FLAG_OVERLAPPED and lpOverlapped is NULL, the function can incorrectly report that the operation is complete. " However, this has worked for years in "real life&qu...

...extend Windows::Synchronize class Error < StandardError; end def self.read_async(file, length=nil, offset=0, &block) handle = CreateFile( file, FILE_READ_DATA, FILE_SHARE_READ, 0, OPEN_EXISTING, FILE_FLAG_OVERLAPPED | FILE_FLAG_NO_BUFFERING, 0 ) if handle == INVALID_HANDLE_VALUE raise Error, get_last_error end func = Win32::API::Callback.new(''LLP'', ''V''){ block.call } over...

...File extend Windows::MSVCRT::IO extend Windows::SystemInfo include Windows::File def self.readlines(file, sep = $INPUT_RECORD_SEPARATOR) handle = CreateFile( file, GENERIC_READ, FILE_SHARE_READ, nil, OPEN_EXISTING, FILE_FLAG_OVERLAPPED | FILE_FLAG_NO_BUFFERING, nil ) if handle == INVALID_HANDLE_VALUE raise SystemCallError.new(GetLastError()) end sysbuf = 0.chr * 40 GetSystemInfo(sysbuf) page_size = sysbuf[8,4].unpack(''L'')[0] # dwPageSize...

Hi all, I''ve been working on the win32-pipe library (again) and I''ve reworked the interface. Instead of Pipe.new_server or Pipe.new_client, there''s now a base Pipe class, with Pipe::Server and Pipe::Client subclasses. You can find the latest code in the CVS repo. Oh, and you''ll need to update your windows-pr library with the latest from CVS if you want to

This is an incomplete port to Windows. Currently the server compiles and starts up successfully, but goes into an infinite loop when you connect to it. Nevertheless I think the approach is ready for feedback. This being Windows the changes go quite deep. Rich.