Device Manage for OS/2

DevCon for OS/2 - Developer Connection

 		Operating systems:
ArcaOS, eComStation, IBM OS/2 Warp
eComStation myths 

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WinCancelShutdown

function cancels a request for an application to [[shutdown|shut down]]. 

#define INCL_WINMESSAGEMGR /* Or use INCL_WIN, INCL_PM, Also in COMMON section */
#include 

HMQ     hmq;            /*  Handle of message queue for current thread. */
BOOL    fCancelAlways;  /*  Cancellation control. */
BOOL    rc;             /*  Success indicator. */

rc = WinCancelShutdown(hmq, fCancelAlways);

Parameters 

hmq (HMQ) - input. Handle of message queue for current thread. 
fCancelAlways (BOOL) - input. Cancellation control. 
  TRUE   No WM_QUIT message should be placed on this queue during system shutdown. 
  FALSE  The applications ignore any outstanding WM_QUIT messages already sent to it, but a message should be sent during other system shutdowns.

Returns 

 rc (BOOL) Success indicator. 
    TRUE  Successful completion 
    FALSE  Error occurred.

Notes

On a system shutdown, each message queue is normally posted a WM_QUIT message. An application can handle this message in one of two ways:

  • Destroy its message queue using [[WinDestroyMsgQueue]] (hmq) or,
  • Call [[WinCancelShutdown]](hmq, FALSE)
Either way the system can proceed to the next queue. If the application determines that it never wants a message queue to receive a [[WM_QUIT]] message as a result of a system shutdown, it should call WinCancelShutdown (hmq, TRUE), typically right after creating the message queue.

 


 

 

ArcaOS 5.1.1 whatsnew - PNG icons

PNG icons on Desktop

PNG icons on Desktop. (instead of ancient .ico designed in 1994)

Russian OS/2

eCo Software is making russian eComStation since 2001, all versions of ArcaOS since 2017.

// надо на ENG!!

 
Every conference is important.

Warpstock Europe 2016

Interview with Lars Erdmann
talking about USB drivers development

What was happening at that conference? The work on ArcaOS was starting..

 

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