Tcl Source Code

Check-in [ca77050cc6]
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Overview
Comment:Fix DDE code for Win95/98
Downloads: Tarball | ZIP archive | SQL archive
Timelines: family | ancestors | descendants | both | core-8-1-branch-old
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SHA1:ca77050cc6a9f034985131dc4509ab6f559e186a
User & Date: redman 1999-04-03 00:44:38
Context
1999-04-03
01:19
* generic/tclThreadTest.c (ThreadExitProc): Fixed bug where static memory was being returned instead... check-in: 580aaa126e user: stanton tags: core-8-1-branch-old
00:44
Fix DDE code for Win95/98 check-in: ca77050cc6 user: redman tags: core-8-1-branch-old
1999-04-02
23:48
Add DDE package (moved from Tk). check-in: 26586b1d7e user: redman tags: core-8-1-branch-old
Changes
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Changes to win/tclWinDde.c.

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 *	to interpreter.
 *
 * Copyright (c) 1997 by Sun Microsystems, Inc.
 *
 * See the file "license.terms" for information on usage and redistribution
 * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
 *
 * RCS: @(#) $Id: tclWinDde.c,v 1.1.2.1 1999/04/02 23:48:34 redman Exp $
 */

#include "tclPort.h"
#include <ddeml.h>

/*
 * TCL_STORAGE_CLASS is set unconditionally to DLLEXPORT because the
................................................................................
} ThreadSpecificData;
static Tcl_ThreadDataKey dataKey;

/*
 * The following variables cannot be placed in thread-local storage.
 * The Mutex ddeMutex guards access to the ddeInstance.
 */

static DWORD ddeInstance;       /* The application instance handle given
				 * to us by DdeInitialize. */
static int ddeIsServer = 0;

TCL_DECLARE_MUTEX(ddeMutex)

/*
................................................................................
 
 

static void
Initialize()
{
    int nameFound = 0;
    HSZ ddeService = 0;
    ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
    
    /*
     * See if the application is already registered; if so, remove its
     * current name from the registry. The deletion of the command
     * will take care of disposing of this entry.
     */

    if (tsdPtr->interpListPtr != NULL) {
	nameFound = 1;
    }

    /*
     * First, if Dde has been initialized as a client, uninitialize it.
     */
    if ((ddeInstance != 0) && (ddeIsServer == 0) && (nameFound != 0)) {
	Tcl_MutexLock(&ddeMutex);
	DdeUninitialize(ddeInstance);
	ddeInstance = 0;
    }

	
    /*
     * Make sure that the DDE server is there. This is done only once,
     * add an exit handler tear it down.
     */

    if (ddeInstance == 0) {
	Tcl_MutexLock(&ddeMutex);
	if (ddeInstance == 0) {
	    if (nameFound != 0) {
		if (DdeInitialize(&ddeInstance, DdeServerProc,
			CBF_SKIP_REGISTRATIONS
			| CBF_SKIP_UNREGISTRATIONS
			| CBF_FAIL_POKES, 0) 
			!= DMLERR_NO_ERROR) {
		    DdeUninitialize(ddeInstance);
		    ddeInstance = 0;
		} else {







		    ddeIsServer = 1;
		    Tcl_CreateExitHandler(DdeExitProc, NULL);
		    ddeService = DdeCreateStringHandle(ddeInstance, "TclEval", 0);
		    DdeNameService(ddeInstance, ddeService, 0L, DNS_REGISTER);
		}
	    } else {
		if (DdeInitialize(&ddeInstance, NULL,
			CBF_SKIP_REGISTRATIONS
			| CBF_SKIP_UNREGISTRATIONS
			| CBF_FAIL_POKES
			| APPCMD_CLIENTONLY
			| APPCMD_FILTERINITS, 0) 
			!= DMLERR_NO_ERROR) {
		    DdeUninitialize(ddeInstance);
		    ddeInstance = 0;
		} else {
		    ddeIsServer = 0;
		}
	    }
	}
	Tcl_MutexUnlock(&ddeMutex);
    }
}    

 
/*






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 *	to interpreter.
 *
 * Copyright (c) 1997 by Sun Microsystems, Inc.
 *
 * See the file "license.terms" for information on usage and redistribution
 * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
 *
 * RCS: @(#) $Id: tclWinDde.c,v 1.1.2.2 1999/04/03 00:44:38 redman Exp $
 */

#include "tclPort.h"
#include <ddeml.h>

/*
 * TCL_STORAGE_CLASS is set unconditionally to DLLEXPORT because the
................................................................................
} ThreadSpecificData;
static Tcl_ThreadDataKey dataKey;

/*
 * The following variables cannot be placed in thread-local storage.
 * The Mutex ddeMutex guards access to the ddeInstance.
 */
static HSZ ddeService = 0;
static DWORD ddeInstance;       /* The application instance handle given
				 * to us by DdeInitialize. */
static int ddeIsServer = 0;

TCL_DECLARE_MUTEX(ddeMutex)

/*
................................................................................
 
 

static void
Initialize()
{
    int nameFound = 0;

    ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
    
    /*
     * See if the application is already registered; if so, remove its
     * current name from the registry. The deletion of the command
     * will take care of disposing of this entry.
     */

    if (tsdPtr->interpListPtr != NULL) {
	nameFound = 1;
    }











    /*
     * Make sure that the DDE server is there. This is done only once,
     * add an exit handler tear it down.
     */

    if (ddeInstance == 0) {
	Tcl_MutexLock(&ddeMutex);
	if (ddeInstance == 0) {

	    if (DdeInitialize(&ddeInstance, DdeServerProc,
		    CBF_SKIP_REGISTRATIONS
		    | CBF_SKIP_UNREGISTRATIONS
		    | CBF_FAIL_POKES, 0) 
		    != DMLERR_NO_ERROR) {
		DdeUninitialize(ddeInstance);
		ddeInstance = 0;

	    }
	}
	Tcl_MutexUnlock(&ddeMutex);
    }
    if ((ddeService == 0) && (nameFound != 0)) {
	Tcl_MutexLock(&ddeMutex);
	if ((ddeService == 0) && (nameFound != 0)) {
	    ddeIsServer = 1;
	    Tcl_CreateExitHandler(DdeExitProc, NULL);
	    ddeService = DdeCreateStringHandle(ddeInstance, "TclEval", 0);
	    DdeNameService(ddeInstance, ddeService, 0L, DNS_REGISTER);

	} else {










	    ddeIsServer = 0;


	}
	Tcl_MutexUnlock(&ddeMutex);
    }
}    

 
/*