FlushBufHook: Difference between revisions
Created page with "This function is specific to OS/2 Version 2.1 or higher. This hook allows applications to save data before the system reboots. ==Syntax== FlushBufHook(hab); ==Parameters== ;''hab'' (HAB) - input: Application anchor block. ==Returns== ;''rc'' (BOOL) - returns: Return code. :TRUE: Successful completion. :FALSE: An error occurred. ==Remarks== This hook is called to notify applications that the system is rebooting due to a Ctrl+Alt+Del sequence being entered. It enables..." |
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==Syntax== | ==Syntax== | ||
FlushBufHook(hab) | FlushBufHook(hab) | ||
==Parameters== | ==Parameters== | ||
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This hook is called to notify applications that the system is rebooting due to a Ctrl+Alt+Del sequence being entered. It enables applications to write existing information to the hardfile immediately, avoiding loss of data before the system reboots. | This hook is called to notify applications that the system is rebooting due to a Ctrl+Alt+Del sequence being entered. It enables applications to write existing information to the hardfile immediately, avoiding loss of data before the system reboots. | ||
; | ;Note: Do not use any of the Win or Gpi functions inside the hook routine. At the point in time that the hook routine is executing, these sub-systems may not be fully available because they might be partially shutdown. | ||
==Related Functions== | ==Related Functions== | ||
Latest revision as of 17:24, 26 October 2025
This function is specific to OS/2 Version 2.1 or higher.
This hook allows applications to save data before the system reboots.
Syntax
FlushBufHook(hab)
Parameters
- hab (HAB) - input
- Application anchor block.
Returns
- rc (BOOL) - returns
- Return code.
- TRUE: Successful completion.
- FALSE: An error occurred.
Remarks
This hook is called to notify applications that the system is rebooting due to a Ctrl+Alt+Del sequence being entered. It enables applications to write existing information to the hardfile immediately, avoiding loss of data before the system reboots.
- Note
- Do not use any of the Win or Gpi functions inside the hook routine. At the point in time that the hook routine is executing, these sub-systems may not be fully available because they might be partially shutdown.
Related Functions
Example Code
#define INCL_WINHOOKS /* Or use INCL_WIN, INCL_PM, */ #include <os2.h> HAB hab; /* Application anchor block. */ BOOL rc; /* Return code. */ rc = FlushBufHook(hab);