#ifndef _NTIOAPI_H

/**
 * The FILE_MAILSLOT_SET_INFORMATION structure is used to set a value on a mailslot.
 * \sa https://learn.microsoft.com/en-us/windows-hardware/drivers/ddi/ntifs/ns-ntifs-_file_mailslot_set_information
 */
typedef struct _FILE_MAILSLOT_SET_INFORMATION
{
    PLARGE_INTEGER ReadTimeout;     // The time, in milliseconds, that a read operation can wait for a message to be written to the mailslot before a time-out occurs.
} FILE_MAILSLOT_SET_INFORMATION, *PFILE_MAILSLOT_SET_INFORMATION;

#endif
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// ntifs.h

typedef struct _FILE_MAILSLOT_SET_INFORMATION {
  PLARGE_INTEGER ReadTimeout;
} FILE_MAILSLOT_SET_INFORMATION, *PFILE_MAILSLOT_SET_INFORMATION;
View the official Windows Driver Kit DDI reference

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This structure is documented in Windows Driver Kit.

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Windows Driver Kit DDI reference (ns-ntifs-_file_mailslot_set_information)

_FILE_MAILSLOT_SET_INFORMATION structure

Description

The FILE_MAILSLOT_SET_INFORMATION structure is used to set a value on a mailslot.

Members

`ReadTimeout`

The time, in milliseconds, that a read operation can wait for a message to be written to the mailslot before a time-out occurs. A value of –1 requests that the read wait forever for a message without timing out. A value of 0 requests that the read not wait and return immediately whether a pending message is available to be read or not.

Remarks

For more information, see Mailslots.

View the official Windows Driver Kit DDI reference

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