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JNA API 4.2.1


  • Enclosing interface:

    public static class WinBase.COMMTIMEOUTS
    extends Structure
    Contains the time-out parameters for a communications device. The parameters determine the behavior of Kernel32#ReadFile(com.sun.jna.platform.win32.WinNT.HANDLE, java.nio.Buffer, int, com.sun.jna.ptr.IntByReference, com.sun.jna.platform.win32.WinBase.OVERLAPPED) , Kernel32#WriteFile(com.sun.jna.platform.win32.WinNT.HANDLE, byte[], int, com.sun.jna.ptr.IntByReference, com.sun.jna.platform.win32.WinBase.OVERLAPPED)), ReadFileEx, and WriteFileEx operations on the device.

    If an application sets ReadIntervalTimeout and ReadTotalTimeoutMultiplier to MAXDWORD and sets ReadTotalTimeoutConstant to a value greater than zero and less than MAXDWORD, one of the following occurs when the ReadFile function is called:
  • If there are any bytes in the input buffer, ReadFile returns immediately with the bytes in the buffer.
  • If there are no bytes in the input buffer, ReadFile waits until a byte arrives and then returns immediately.
  • If no bytes arrive within the time specified by ReadTotalTimeoutConstant, ReadFile times out.
JNA API 4.2.1

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