-
Notifications
You must be signed in to change notification settings - Fork 3
/
listing5.html
executable file
·753 lines (604 loc) · 26.6 KB
/
listing5.html
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/1999/REC-html401-19991224/loose.dtd">
<html>
<head>
<!-- BEGIN META TAG INFO -->
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<link rel="home" href="http://developer.apple.com/">
<link rel="find" href="http://developer.apple.com/search/">
<link rel="stylesheet" type="text/css" href="../../documentation/css/adcstyle.css" title="fonts">
<script language="JavaScript" src="../../documentation/js/adc.js" type="text/javascript"></script>
<!-- END META TAG INFO -->
<!-- BEGIN TITLE -->
<title>AsyncPB - /ProjectBuilder (OS X)/main.c</title>
<!-- END TITLE -->
<script language="JavaScript">
function JumpToNewPage() {
window.location=document.scpopupmenu.gotop.value;
return true;
}
</script>
</head>
<!-- BEGIN BODY OPEN -->
<body>
<!--END BODY OPEN -->
<!-- START CENTER OPEN -->
<center>
<!-- END CENTER OPEN -->
<!-- BEGIN LOGO AND SEARCH -->
<!--#include virtual="/includes/adcnavbar"-->
<!-- END LOGO AND SEARCH -->
<!-- START BREADCRUMB -->
<div id="breadcrumb">
<table width="680" border="0" cellpadding="0" cellspacing="0">
<tr>
<td scope="row"><img width="340" height="10" src="images/1dot.gif" alt=""></td>
<td><img width="340" height="10" src="images/1dot.gif" alt=""></td>
</tr>
<tr valign="middle">
<td align="left" colspan="2">
<a href="http://developer.apple.com/">ADC Home</a> > <a href="../../referencelibrary/index.html">Reference Library</a> > <a href="../../samplecode/index.html">Sample Code</a> > <a href="../../samplecode/Carbon/index.html">Carbon</a> > <a href="../../samplecode/Carbon/idxFileManagement-date.html">File Management</a> > <A HREF="javascript:location.replace('index.html');">AsyncPB</A> >
</td>
</tr>
<tr>
<td colspan="2" scope="row"><img width="680" height="35" src="images/1dot.gif" alt=""></td>
</tr>
</table>
</div>
<!-- END BREADCRUMB -->
<div style="width:100%; position:fixed;"><div align="center" id="watermark" style="position: relative; margin-left:auto; margin-right:auto; z-index:20; width:500px;"><div class="legacybox"><h1>Not Recommended Document<span class=closebutton><a href="javascript:closeWatermark()"><img src="../../images/closebutton.png" width="14" height="14" border="0" alt="close button"></a></span></h1>
<p><strong>Important: </strong>The information in this document is <strong>Not Recommended</strong> and should not be used for new development.</p>
<div class="reflibtopic">
<p>Current information on this Reference Library topic can be found here:</p>
<ul>
<li><a href="http://developer.apple.com/referencelibrary/Carbon/idxFileManagement-date.html" target="_blank">Carbon > File Management</a></li>
</ul>
</div>
</div></div></div>
<!-- START MAIN CONTENT -->
<!-- START TITLE GRAPHIC AND INTRO-->
<table width="680" border="0" cellpadding="0" cellspacing="0">
<tr align="left" valign="top">
<td><h1><div id="pagehead">AsyncPB</div></h1></td>
</tr>
</table>
<!-- END TITLE GRAPHIC AND INTRO -->
<!-- START WIDE COLUMN -->
<table width="680" border="0" cellpadding="0" cellspacing="0">
<tr align="left" valign="top">
<td id="scdetails">
<h2>/ProjectBuilder (OS X)/main.c</h2>
<form name="scpopupmenu" onSubmit="return false;" method=post>
<p><strong>View Source Code:</strong>
<select name="gotop" onChange="JumpToNewPage();" style="width:340px"><option selected value="ingnore">Select File</option>
<option value="listing1.html">/CodeWarrior (OS 9)/AsyncPB.c</option>
<option value="listing2.html">/CodeWarrior (OS 9)/AsyncPB.h</option>
<option value="listing3.html">/CodeWarrior (OS 9)/AsyncPBPPC.r</option>
<option value="listing4.html">/ProjectBuilder (OS X)/AsyncPB_Prefix.h</option>
<option value="listing5.html">/ProjectBuilder (OS X)/main.c</option></select>
</p>
</form>
<p><strong><a href="AsyncPB.zip">Download Sample</a></strong> (“AsyncPB.zip”, 58.4K)<BR>
<strong><a href="AsyncPB.dmg">Download Sample</a></strong> (“AsyncPB.dmg”, 116.2K)</p>
<!--
<p><strong><a href="#">Download Sample</a></strong> (“filename.sit”, 500K)</p>
-->
</td>
</tr>
<tr>
<td scope="row"><img width="680" height="10" src="images/1dot.gif" alt=""><br>
<img height="1" width="680" src="images/1dot_919699.gif" alt=""><br>
<img width="680" height="20" src="images/1dot.gif" alt=""></td>
</tr>
<tr>
<td scope="row">
<!--googleon: index -->
<pre class="sourcecodebox">/*
File: AsyncPB.c
Contains: AsyncPB is an example of how File System calls can be made
in a chain from an interrupt handler.
Once you select DoIt from the menu give it a little time to actually
process the input file.
Written by: DTS
Copyright: Copyright (c) 2003 by Apple Computer, Inc., All Rights Reserved.
Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple Computer, Inc.
("Apple") in consideration of your agreement to the following terms, and your
use, installation, modification or redistribution of this Apple software
constitutes acceptance of these terms. If you do not agree with these terms,
please do not use, install, modify or redistribute this Apple software.
In consideration of your agreement to abide by the following terms, and subject
to these terms, Apple grants you a personal, non-exclusive license, under Apple's
copyrights in this original Apple software (the "Apple Software"), to use,
reproduce, modify and redistribute the Apple Software, with or without
modifications, in source and/or binary forms; provided that if you redistribute
the Apple Software in its entirety and without modifications, you must retain
this notice and the following text and disclaimers in all such redistributions of
the Apple Software. Neither the name, trademarks, service marks or logos of
Apple Computer, Inc. may be used to endorse or promote products derived from the
Apple Software without specific prior written permission from Apple. Except as
expressly stated in this notice, no other rights or licenses, express or implied,
are granted by Apple herein, including but not limited to any patent rights that
may be infringed by your derivative works or by other works in which the Apple
Software may be incorporated.
The Apple Software is provided by Apple on an "AS IS" basis. APPLE MAKES NO
WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED
WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND OPERATION ALONE OR IN
COMBINATION WITH YOUR PRODUCTS.
IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION, MODIFICATION AND/OR DISTRIBUTION
OF THE APPLE SOFTWARE, HOWEVER CAUSED AND WHETHER UNDER THEORY OF CONTRACT, TORT
(INCLUDING NEGLIGENCE), STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN
ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
Change History (most recent first):
23 Jul 2003 Rewrote for modern coding conventions (Quinn)
Jul 2003 Updated for Project Builder (MK)
6/24/99 Updated for Metrowerks Codewarror Pro 2.1 (KG)
1984 ? First written (JB)
$Log$
*/
/////////////////////////////////////////////////////////////////
#include <Carbon/Carbon.h>
#include <assert.h>
/////////////////////////////////////////////////////////////////
#pragma mark ***** User Interface Boilerplate
static const ControlID kDoItButtonID = { 'DoIt', 0 };
static ControlRef gDoItButton;
static WindowRef gWindow;
static void DisplayError(OSStatus errNum)
// Displays an error dialog
{
OSStatus junk;
SInt16 junkItemHit;
Str255 expStr;
if ( (errNum != noErr) && (errNum != userCanceledErr) ) {
NumToString(errNum, expStr);
junk = StandardAlert(
kAlertStopAlert,
"\pAn error occured.",
expStr,
NULL,
&junkItemHit
);
assert(junk == noErr);
}
}
/////////////////////////////////////////////////////////////////
#pragma mark ***** Start of interesting code
/////////////////////////////////////////////////////////////////
#pragma mark ***** Chained I/O handling
enum {
kStateRecordMagic = 'mjik'
};
// StateRecord records all of the information about a particular
// chained I/O operation.
struct StateRecord {
OSStatus magic; // must be kStateRecordMagic
Boolean inUse; // primarily for debugging
FSForkIOParam readParam; // parameter block used for reads
FSForkIOParam writeParam; // parameter block used for writes
char buffer[1]; // The small buffer size is great for testing because
// you can see the "Do It" button grey out and then
// ungrey on completion. For better efficiency, you can
// increase the size of the buffer (and everything works!).
EventRef doneEvent; // we post doneEvent to doneQueue when the chain completes
EventQueueRef doneQueue;
OSStatus doneErr;
};
typedef struct StateRecord StateRecord;
static void SignalDone(StateRecord *sr, OSStatus err)
// Called when the I/O chain terminates. It posts doneEvent
// to doneQueue, which causes the main event loop to wake up
// and call the DoneIt function, which displays the results of
// the I/O chain (that is, doneErr).
{
OSStatus junk;
sr->doneErr = err;
junk = PostEventToQueue(sr->doneQueue, sr->doneEvent, kEventPriorityStandard);
assert(junk == noErr);
}
static IOCompletionUPP gReadCompletionUPP; // -> ReadCompletion
static pascal void ReadCompletion(ParmBlkPtr pb)
// Called when the async read request completes.
// pb points to the parameter block that was used to
// issue the read. We can map back from that to get our
// state record.
{
StateRecord * sr;
// Get our state record.
sr = (StateRecord *) (((char *) pb) - offsetof(StateRecord, readParam));
assert(sr->magic == kStateRecordMagic);
// We had a partially successful read. Let's just treat it
// as a successful read for the moment. This ensures that
// the last chunk of the file gets written. The next time
// we read, actualCount will be zero and we'll terminate
// the I/O chain.
if ( (sr->readParam.ioResult == eofErr) && (sr->readParam.actualCount > 0) ) {
sr->readParam.ioResult = noErr;
}
if (sr->readParam.ioResult == noErr) {
// If the read was successful, kick off the write. We copy
// across the number of bytes read into requestCount so that
// we only write the bytes that we read in the last read.
sr->writeParam.requestCount = sr->readParam.actualCount;
(void) PBWriteForkAsync( &sr->writeParam );
} else {
// If the read errored, call SignalDone to tell the main event loop.
if (sr->readParam.ioResult == eofErr) {
// If the read hit the end of file, that's not an error, it's
// just the end of the I/O chain.
sr->readParam.ioResult = noErr;
}
SignalDone(sr, sr->readParam.ioResult);
}
}
static IOCompletionUPP gWriteCompletionUPP; // -> WriteCompletion
static pascal void WriteCompletion(ParmBlkPtr pb)
// Called when the async write request completes.
// pb points to the parameter block that was used to
// issue the write. We can map back from that to get our
// state record.
{
StateRecord * sr;
// Get our state record.
sr = (StateRecord *) (((char *) pb) - offsetof(StateRecord, writeParam));
assert(sr->magic == kStateRecordMagic);
if (sr->readParam.ioResult == noErr) {
// If the read was successful, kick off the write.
(void) PBReadForkAsync( &sr->readParam );
} else {
// If the write errored, call SignalDone to tell the main event loop.
SignalDone(sr, sr->readParam.ioResult);
}
}
/////////////////////////////////////////////////////////////////
#pragma mark ***** Main event loop-based set up/tear down
static OSStatus CreateSignalDoneEvent(void *refCon, EventRef *doneEventPtr)
// Create the event that is posted when the I/O chain is
// done. In this case, we create a 'Done' HICommand, which
// we dispatch to the DoneIt routine. We store the refCon
// in the event so that DoneIt can recover the correct
// StateRecord pointer.
{
OSStatus err;
assert( doneEventPtr != NULL );
assert(*doneEventPtr == NULL );
err = MacCreateEvent(
NULL,
kEventClassCommand,
kEventCommandProcess,
GetCurrentEventTime(),
kEventAttributeNone,
doneEventPtr
);
if (err == noErr) {
HICommand command;
BlockZero(&command, sizeof(command));
command.commandID = 'Done';
err = SetEventParameter(
*doneEventPtr,
kEventParamDirectObject,
typeHICommand,
sizeof(command),
&command
);
}
if (err == noErr) {
err = SetEventParameter(*doneEventPtr, 'REFC', typeUInt32, sizeof(refCon), &refCon);
}
// Clean up.
if (err != noErr) {
ReleaseEvent(*doneEventPtr);
*doneEventPtr = NULL;
}
assert( (err == noErr) == (*doneEventPtr != NULL) );
return err;
}
// In this example we use a single global state record for the I/O.
// In a real program, you would allocate one of these for each async
// I/O chain you wanted to operate concurrently.
static StateRecord gStateRecord;
static void DoIt(void)
// Called by our Carbon event command handler when the user click's
// the "Do It" button. This kicks off the async I/O chain.
{
OSStatus err;
OSStatus junk;
StateRecord * sr;
ProcessSerialNumber ourPSN;
FSRef ourRef;
FSRef parentDirRef;
FSRef srcFileRef;
FSRef dstFileRef;
SInt16 srcForkRef;
SInt16 dstForkRef;
EventRef doneEvent;
static const UniChar kSrcName[] = { 'i', 'n', 'D', 'a', 't', 'a' };
static const UniChar kDstName[] = { 'o', 'u', 't', 'D', 'a', 't', 'a' };
srcForkRef = 0;
dstForkRef = 0;
doneEvent = NULL;
// 'Allocate' our state record.
assert( ! gStateRecord.inUse );
sr = &gStateRecord;
// Disable the button so the user can't click it again.
junk = DisableControl(gDoItButton);
assert(junk == noErr);
// Get an FSRef to the directory in which the application resides.
err = GetCurrentProcess(&ourPSN);
if (err == noErr) {
err = GetProcessBundleLocation(&ourPSN, &ourRef);
}
if (err == noErr) {
err = FSGetCatalogInfo(&ourRef, kFSCatInfoNone, NULL, NULL, NULL, &parentDirRef);
}
// Open up the source file.
if (err == noErr) {
err = FSMakeFSRefUnicode(
&parentDirRef,
sizeof(kSrcName) / sizeof(UniChar),
kSrcName,
kTextEncodingUnknown,
&srcFileRef
);
}
if (err == noErr) {
err = FSOpenFork(&srcFileRef, 0, NULL, fsRdPerm, &srcForkRef);
}
// Open up the destination file (deleting the old one if necessary).
if (err == noErr) {
if ( FSMakeFSRefUnicode(
&parentDirRef,
sizeof(kDstName) / sizeof(UniChar),
kDstName,
kTextEncodingUnknown,
&dstFileRef
) == noErr ) {
junk = FSDeleteObject(&dstFileRef);
assert(junk == noErr);
}
FSCatalogInfo catInfo;
FInfo * fInfoPtr;
BlockZero(&catInfo, sizeof(catInfo));
fInfoPtr = (FInfo *) catInfo.finderInfo;
fInfoPtr->fdCreator = '????';
fInfoPtr->fdType = 'TEXT';
err = FSCreateFileUnicode(
&parentDirRef,
sizeof(kDstName) / sizeof(UniChar),
kDstName,
kFSCatInfoFinderInfo,
&catInfo,
&dstFileRef,
NULL
);
}
if (err == noErr) {
err = FSOpenFork(&dstFileRef, 0, NULL, fsRdWrPerm, &dstForkRef);
}
// Create the event that the async I/O chain posts in order to signal
// its completion.
if (err == noErr) {
err = CreateSignalDoneEvent(sr, &doneEvent);
}
// If everything is good, let's kick off the chained I/O completion routines.
if (err == noErr) {
BlockZero(sr, sizeof(*sr));
sr->magic = kStateRecordMagic;
sr->inUse = true;
sr->readParam.ioCompletion = gReadCompletionUPP;
sr->readParam.forkRefNum = srcForkRef;
sr->readParam.buffer = sr->buffer;
sr->readParam.requestCount = sizeof(sr->buffer);
sr->readParam.positionMode = fsAtMark;
sr->readParam.positionOffset = 0;
sr->writeParam.ioCompletion = gWriteCompletionUPP;
sr->writeParam.forkRefNum = dstForkRef;
sr->writeParam.buffer = sr->buffer;
// Don't need to initialise sr->writeParam.requestCount because
// ReadCompletion always sets it up.
sr->writeParam.positionMode = fsAtMark;
sr->writeParam.positionOffset = 0;
sr->doneEvent = doneEvent;
sr->doneQueue = GetMainEventQueue();
PBReadForkAsync(&sr->readParam);
// Once we've kicked off the async I/O chain, it's responsible for
// for cleaning up this information by calling SignalDone, which
// results in DoneIt being called.
srcForkRef = 0;
dstForkRef = 0;
doneEvent = NULL;
}
// Clean up.
if (srcForkRef != NULL) {
junk = FSCloseFork(srcForkRef);
assert(junk == noErr);
}
if (dstForkRef != NULL) {
junk = FSCloseFork(dstForkRef);
assert(junk == noErr);
}
if (doneEvent != NULL) {
ReleaseEvent(doneEvent);
}
if (err != noErr) {
junk = EnableControl(gDoItButton);
assert(junk == noErr);
}
DisplayError(err);
}
static void DoneIt(EventRef event)
// Called by our Carbon event command handler when it gets 'Done'
// event, which is posted when the I/O chain completes. This
// cleans up resources and displays the result.
{
OSStatus err;
OSStatus junk;
StateRecord * sr;
assert( gStateRecord.inUse );
// Get a reference to our state record from the event's refCon.
err = GetEventParameter(
event,
'REFC',
typeUInt32,
NULL,
sizeof(sr),
NULL,
&sr
);
// Clean up the state record.
if (err == noErr) {
assert(sr->magic == kStateRecordMagic);
junk = FSCloseFork(sr->readParam.forkRefNum);
assert(junk == noErr);
sr->readParam.forkRefNum = 0;
junk = FSCloseFork(sr->writeParam.forkRefNum);
assert(junk == noErr);
sr->writeParam.forkRefNum = 0;
ReleaseEvent(sr->doneEvent);
sr->doneEvent = NULL;
DisplayError(sr->doneErr);
}
// Mark the global state record as no longer being in use and
// re-enable the "Do It" button. This is kinda bogus because
// it breaks our model that DoneIt knows nothing about the
// global state record. In a real application this might
// recycle sr on to the end of a queue of StateRecords that is
// is available to the application.
gStateRecord.inUse = false;
junk = EnableControl(gDoItButton);
assert(junk == noErr);
}
/////////////////////////////////////////////////////////////////
#pragma mark ***** End of interesting code
/////////////////////////////////////////////////////////////////
#pragma mark ***** More User Interface Boilerplate
// The code below is mostly standard Carbon NIB-based application boilerplate.
static const EventTypeSpec kMyEventTypes[] = {
{kEventClassCommand, kEventCommandProcess}
};
static EventHandlerUPP gMyEventHandlerUPP; // -> MyEventHandler
static OSStatus MyEventHandler(EventHandlerCallRef inHandlerCallRef, EventRef inEvent, void *inUserData)
// A standard Carbon event handler.
{
OSStatus err;
HICommand command;
err = eventNotHandledErr;
switch ( GetEventClass(inEvent) ) {
case kEventClassCommand:
switch ( GetEventKind(inEvent) ) {
case kEventCommandProcess:
err = GetEventParameter(
inEvent,
kEventParamDirectObject,
typeHICommand,
NULL,
sizeof(command),
NULL,
&command
);
if (err == noErr) {
switch (command.commandID) {
case 'DoIt':
DoIt();
break;
case 'Done':
DoneIt(inEvent);
break;
default:
err = eventNotHandledErr;
break;
}
}
break;
default:
// do noting
break;
}
break;
default:
// do noting
break;
}
return err;
}
int main(int argc, char* argv[])
{
OSStatus err;
IBNibRef nibRef;
// Create a Nib reference passing the name of the nib file (without the .nib extension)
// CreateNibReference only searches into the application bundle.
err = CreateNibReference(CFSTR("main"), &nibRef);
require_noerr( err, CantGetNibRef );
// Once the nib reference is created, set the menu bar. "MainMenu" is the name of the menu bar
// object. This name is set in InterfaceBuilder when the nib is created.
err = SetMenuBarFromNib(nibRef, CFSTR("MenuBar"));
require_noerr( err, CantSetMenuBar );
// Then create a window. "MainWindow" is the name of the window object. This name is set in
// InterfaceBuilder when the nib is created.
err = CreateWindowFromNib(nibRef, CFSTR("MainWindow"), &gWindow);
require_noerr( err, CantCreateWindow );
// Initialise our UPPs.
gReadCompletionUPP = NewIOCompletionUPP(ReadCompletion);
assert(gReadCompletionUPP != NULL);
gWriteCompletionUPP = NewIOCompletionUPP(WriteCompletion);
assert(gWriteCompletionUPP != NULL);
// Grab a reference to the "Do It" button.
err = GetControlByID(gWindow, &kDoItButtonID, &gDoItButton);
require_noerr( err, CantGetDoItButtonControl );
// Install an application event handler.
gMyEventHandlerUPP = NewEventHandlerUPP(MyEventHandler);
assert(gMyEventHandlerUPP != NULL);
err = InstallApplicationEventHandler(gMyEventHandlerUPP, GetEventTypeCount(kMyEventTypes), kMyEventTypes, NULL, NULL);
require_noerr( err, CantInstallHandler );
// We don't need the nib reference anymore.
DisposeNibReference(nibRef);
// The window was created hidden so show it.
ShowWindow( gWindow );
// Call the event loop
RunApplicationEventLoop();
CantInstallHandler:
CantGetDoItButtonControl:
CantCreateWindow:
CantSetMenuBar:
CantGetNibRef:
return err;
}
</pre>
<!--googleoff: index -->
</td>
</tr>
</table>
<!-- END WIDE COLUMN -->
<!-- END MAIN CONTENT -->
<table width="680" border="0" cellpadding="0" cellspacing="0">
<tr>
<td><div style="width: 100%; height: 1px; background-color: #919699; margin-top: 5px; margin-bottom: 15px"></div></td>
</tr>
<tr>
<td align="center"><br/>
<table border="0" cellpadding="0" cellspacing="0" class="graybox">
<tr>
<th>Did this document help you?</th>
</tr>
<tr>
<td>
<div style="margin-bottom: 8px"><a href="http://developer.apple.com/feedback/?v=1&url=/samplecode/AsyncPB/listing5.html%3Fid%3DDTS10000471-1.0&media=dvd" target=_new>Yes</a>: Tell us what works for you.</div>
<div style="margin-bottom: 8px"><a href="http://developer.apple.com/feedback/?v=2&url=/samplecode/AsyncPB/listing5.html%3Fid%3DDTS10000471-1.0&media=dvd" target=_new>It’s good, but:</a> Report typos, inaccuracies, and so forth.</div>
<div><a href="http://developer.apple.com/feedback/?v=3&url=/samplecode/AsyncPB/listing5.html%3Fid%3DDTS10000471-1.0&media=dvd" target=_new>It wasn’t helpful</a>: Tell us what would have helped.</div>
</td>
</tr>
</table>
</td>
</tr>
</table>
<!-- START BOTTOM APPLE NAVIGATION -->
<!--#include virtual="/includes/footer"-->
<!-- END BOTTOM APPLE NAVIGATION -->
<!-- START CENTER CLOSE -->
</center>
<!-- END CENTER CLOSE -->
</body>
</html>