My app has a DesktopPopupMenu with 38 items (rows) which are predefined in the Opening event using me.addrow“…“. In debug mode the app ran without complaints. But when I built the app it took twice as long as usual and the app crashed immediately. So I divided the Popupmenu into 2 and all was fine again.
So my question is: what is the maximum number of rows allowed in a DesktopPopupMenu and why doesn’t it crash in debug mode?
Xojo 2025 R 2.1
MacOS 26.0.1
iMac M1
I have popupmenu with much more than 38 items.
We have been using Xojo for a bit, and we have not had problems with adding many more rows than that to a DesktopPopupMenu.
I would recommend adding some logging statements to report on the conditions and timing for each row insert (possible suspects include: file access, network access, database queries).
If you want to remove the DesktopPopupMenu from the equation, as a temporary measure, try populating an array with the data (rather than the DesktopPopupMenu), and then output the contents of the Array to a Textbox that can be viewed in a built app. This could reveal some useful information.
38 Rows in a PopupMenu ?
Fortunately, on macOS, typing a character (A…Z) make a jump to the first entry with that character (A…Z), because a PopupMenu that is taller than the screen height… will be boring after some consecutive uses… IMHO.
Please show your code, best would be an example. Can you add the relevant section of the crash log?
There was another thread floating around that mentioned a confirmed Xojo issue dealing with Popupmenus on MacOS 26. You may be running into the same.
A part of the Diagnostic Report:
-------------------------------------
Translated Report (Full Report Below)
-------------------------------------
Process:
Path:
Identifier:
Version:
Code Type: ARM-64 (Native)
Role: Foreground
Parent Process: launchd [1]
Coalition:
User ID:
Date/Time: 2025-10-03 13:15:28.6054 +0200
Launch Time: 2025-10-03 13:15:19.0405 +0200
Hardware Model: iMac21,1
OS Version: macOS 26.0.1 (25A362)
Release Type: User
Crash Reporter Key: FF98D09D-8978-C962-E47B-5E2EC8870A39
Incident Identifier: D8B3F1B8-C144-4720-A101-400F61E138D6
Time Awake Since Boot: 9800 seconds
System Integrity Protection: enabled
Triggered by Thread: 0
Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Subtype: KERN_INVALID_ADDRESS at 0x00000000feaa9870
Exception Codes: 0x0000000000000001, 0x00000000feaa9870
Termination Reason: Namespace SIGNAL, Code 11, Segmentation fault: 11
Terminating Process: exc handler [25509]
VM Region Info: 0xfeaa9870 is not in any region. Bytes before following region: 98740112
REGION TYPE START - END [ VSIZE] PRT/MAX SHRMOD REGION DETAIL
UNUSED SPACE AT START
--->
__TEXT 1048d4000-1072b8000 [ 41.9M] r-x/r-x SM=COW /Users/USER/Documents/*/Kurzweil.app/Contents/MacOS/Kurzweil
Thread 0 Crashed:
0 ??? 0xfeaa9870 ???
1 XojoFramework 0x107e1dc18 ComboBox::Change() + 312
2 XojoFramework 0x107e1daa8 PopupMenu::Change() + 88
3 AppKit 0x1a28f9b08 -[NSApplication(NSResponder) sendAction:to:from:] + 560
4 AppKit 0x1a252e6e0 -[NSControl sendAction:to:] + 72
5 AppKit 0x1a24b7d1c __26-[NSCell _sendActionFrom:]_block_invoke + 100
6 AppKit 0x1a24b7c44 -[NSCell _sendActionFrom:] + 204
7 AppKit 0x1a247dae0 -[NSButtonCell _sendActionFrom:] + 96
8 AppKit 0x1a280cf70 -[NSPopUpButtonCell _withAnimatedImageUpdatesIfApplicable:] + 92
9 AppKit 0x1a280bfa8 __38-[NSPopUpButtonCell _popUpItemAction:]_block_invoke + 100
10 AppKit 0x1a280bf00 -[NSPopUpButtonCell _popUpItemAction:] + 168
11 AppKit 0x1a28f9b08 -[NSApplication(NSResponder) sendAction:to:from:] + 560
12 AppKit 0x1a272eb6c -[NSMenuItem _corePerformAction:] + 540
13 AppKit 0x1a292a43c _NSMenuPerformActionWithHighlighting + 160
14 AppKit 0x1a270c928 -[NSMenu performActionForItemAtIndex:] + 208
15 AppKit 0x1a270ca58 -[NSMenu _internalPerformActionForItemAtIndex:invocationType:] + 84
16 AppKit 0x1a291ff98 +[NSCocoaMenuImpl _performActionForMenuItem:invocationType:] + 184
17 AppKit 0x1a26a3388 -[NSMenuTrackingSession _performPostTrackingDismissalActions] + 488
18 AppKit 0x1a26a2fc8 -[NSMenuTrackingSession startRunningMenuEventLoop:] + 1532
19 AppKit 0x1a26a2958 -[NSMenuTrackingSession startMonitoringEvents:] + 284
20 AppKit 0x1a2ebf0c0 -[NSContextMenuTrackingSession startMonitoringEvents:] + 84
21 AppKit 0x1a264149c +[NSContextMenuImpl presentPopup:fromView:withContext:animated:] + 1116
22 AppKit 0x1a292bb64 _NSPopUpMenu + 2148
23 AppKit 0x1a292b22c -[NSCocoaMenuImpl popUpMenu:atLocation:width:view:selectedItemIndexProvider:font:positioningRect:flags:options:] + 432
24 AppKit 0x1a280b4f0 -[NSPopUpButtonCell trackMouse:inRect:ofView:untilMouseUp:] + 640
25 AppKit 0x1a2b28854 -[NSControl(_NSTracking) _mouseDown:] + 612
26 AppKit 0x1a2b285c4 -[NSControl(_NSTracking) mouseDown:] + 104
27 XojoFramework 0x107cf0af4 0x107c04000 + 969460
28 AppKit 0x1a2beab58 -[NSWindow(NSEventRouting) _handleMouseDownEvent:isDelayedEvent:] + 3676
29 AppKit 0x1a2be79e0 -[NSWindow(NSEventRouting) _reallySendEvent:isDelayedEvent:] + 492
30 AppKit 0x1a2be7470 -[NSWindow(NSEventRouting) sendEvent:] + 372
31 XojoFramework 0x107cfabb4 0x107c04000 + 1010612
32 AppKit 0x1a28f64ac -[NSApplication(NSEventRouting) sendEvent:] + 1276
33 XojoFramework 0x107cea5c8 0x107c04000 + 943560
34 Kurzweil 0x104bffca4 DesktopApplication._CallFunctionWithExceptionHandling%%o<DesktopApplication>p + 164
35 XojoFramework 0x107e6f260 CallFunctionWithExceptionHandling(void (*)()) + 180
36 XojoFramework 0x107cea578 0x107c04000 + 943480
37 AppKit 0x1a23f06ec -[NSApplication _handleEvent:] + 60
38 AppKit 0x1a1e9d748 -[NSApplication run] + 408
39 XojoFramework 0x107e6d950 RuntimeRun + 60
40 Kurzweil 0x104c693b4 REALbasic._RuntimeRun + 28
41 Kurzweil 0x107207c08 _Main + 356
42 Kurzweil 0x1071b8334 main + 20
43 dyld 0x19d659d54 start + 7184
Thread 1:
Thread 2:
Thread 3:
Thread 4:
Thread 5:
Thread 6:
Thread 7:: com.apple.NSEventThread
0 libsystem_platform.dylib 0x19da22160 _platform_memset + 208
1 libsystem_c.dylib 0x19d8b6120 __lshift_D2A + 104
2 libsystem_c.dylib 0x19d8b4874 __dtoa + 2296
3 libsystem_c.dylib 0x19d8a753c __vfprintf + 2772
4 libsystem_c.dylib 0x19d8d2e94 _vsnprintf + 212
5 libsystem_c.dylib 0x19d8b1580 snprintf + 68
6 SkyLight 0x1a43c5d80 (anonymous namespace)::EventLog::getLogString() const + 376
7 SkyLight 0x1a43c70f0 (anonymous namespace)::MouseEventLog::getLogString() const + 80
8 SkyLight 0x1a43c54fc CGSEventLogEvent + 988
9 SkyLight 0x1a42ef414 SLSGetNextEventRecordInternal + 364
10 SkyLight 0x1a426ad4c SLEventCreateNextEvent + 20
11 HIToolbox 0x1aa4ae13c PullEventsFromWindowServerOnConnection(unsigned int, unsigned char, __CFMachPortBoost*) + 80
12 HIToolbox 0x1aa4ab528 MessageHandler(__CFMachPort*, void*, long, void*) + 60
13 CoreFoundation 0x19dad56b4 __CFMachPortPerform + 240
14 CoreFoundation 0x19dab8054 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 60
15 CoreFoundation 0x19dab7f7c __CFRunLoopDoSource1 + 508
16 CoreFoundation 0x19dab69ac __CFRunLoopRun + 2168
17 CoreFoundation 0x19db74898 _CFRunLoopRunSpecificWithOptions + 532
18 AppKit 0x1a1f34a68 _NSEventThread + 184
19 libsystem_pthread.dylib 0x19da18c08 _pthread_start + 136
20 libsystem_pthread.dylib 0x19da13ba8 thread_start + 8
Thread 0 crashed with ARM Thread State (64-bit):
x0: 0x0000000000000000 x1: 0x0000000218437a00 x2: 0x000000020a41b2b8 x3: 0x0000000000000000
x4: 0x000000006e656d6f x5: 0x000000006e656d6f x6: 0x000000000000006e x7: 0x0000000000000000
x8: 0x00000000feaa9870 x9: 0x00000001056a9608 x10: 0x000000012c69d510 x11: 0x000000000000007f
x12: 0x0000000000000074 x13: 0x000000013e14cf30 x14: 0x010000020a3e6711 x15: 0x000000020a3e6710
x16: 0x0000000000000000 x17: 0x0000600003783d20 x18: 0x0000000000000000 x19: 0x0000000000000001
x20: 0x0000000000000000 x21: 0x0000000000000000 x22: 0x0000000104d97978 x23: 0x0000000000000001
x24: 0x000060000008cdc0 x25: 0x0000000203ffd000 x26: 0x0000000000000001 x27: 0x00006000022872c0
x28: 0x000000013e8068a0 fp: 0x000000016b52a100 lr: 0x000000010585dc7c
sp: 0x000000016b5264c0 pc: 0x00000000feaa9870 cpsr: 0x80001000
far: 0x00000000feaa9870 esr: 0x82000006 (Instruction Abort) Translation fault