Drop files event not received on macOS

[groundswellaudio]

Hi,

I have a problem with the drag and drop on macOS 15.5. Most of the time I am not receiving the drop file events, instead I get the DROP_BEGIN and DROP_COMPLETE, but they don't contain the file information. Additionally, when debugging and attempting to drag and drop, i get the following errors in the terminal :

[DragAndDrop] Unpacked drag reference does not match: 58 59
2026-02-15 15:41:07.664976+0100 MusicPlayer[81220:5697669] [DragAndDrop] 59 Drag reference does not have any info.
2026-02-15 15:41:07.664996+0100 MusicPlayer[81220:5697669] [DragAndDrop] 59 Drag reference does not have any info.
2026-02-15 15:41:07.665011+0100 MusicPlayer[81220:5697669] Error from CoreDragRequestDragCompleteMessage: -1850
2026-02-15 15:41:07.665037+0100 MusicPlayer[81220:5697669] [DragAndDrop] 59 Drag reference does not have any info.
2026-02-15 15:41:07.665047+0100 MusicPlayer[81220:5697669] [DragAndDrop] 59 Drag reference does not have any info.
2026-02-15 15:41:07.665819+0100 MusicPlayer[81220:5697669] [DragAndDrop] 59 Drag reference does not have any info.
2026-02-15 15:41:07.666110+0100 MusicPlayer[81220:5697669] [DragAndDrop] 59 Drag reference does not have any info.
2026-02-15 15:41:07.666133+0100 MusicPlayer[81220:5697669] [DragAndDrop] 59 Drag reference does not have any info.
2026-02-15 15:41:07.666152+0100 MusicPlayer[81220:5697669] [DragAndDrop] 59 Drag reference does not have any info.
2026-02-15 15:41:07.666169+0100 MusicPlayer[81220:5697669] [DragAndDrop] 59 Drag reference does not have any info.
(ect...)

Thanks for any help.

[icculus]

This is working here (macOS 15.7.4) dropping a random file from a Finder window onto a run of testsprite's window, with SDL_EVENT_LOGGING=1 set to report events coming through SDL's queue:

2026-02-18 14:18:42.567 testsprite[3756:29242] SDL EVENT: SDL_EVENT_DROP_BEGIN (data='(null)' timestamp=21813001125 windowid=2 x=0.000000 y=0.000000)
2026-02-18 14:18:43.008 testsprite[3756:29242] SDL EVENT: SDL_EVENT_DROP_POSITION (data='(null)' timestamp=22254169250 windowid=2 x=187.277344 y=341.632812)
2026-02-18 14:18:43.026 testsprite[3756:29242] SDL EVENT: SDL_EVENT_DROP_POSITION (data='(null)' timestamp=22271886958 windowid=2 x=187.531250 y=341.632812)
2026-02-18 14:18:43.299 testsprite[3756:29242] SDL EVENT: SDL_EVENT_DROP_POSITION (data='(null)' timestamp=22544628333 windowid=2 x=187.531250 y=341.632812)
2026-02-18 14:18:43.665 testsprite[3756:29242] SDL EVENT: SDL_EVENT_DROP_POSITION (data='(null)' timestamp=22910450666 windowid=2 x=187.531250 y=341.632812)
2026-02-18 14:18:43.673 testsprite[3756:29242] SDL EVENT: SDL_EVENT_WINDOW_FOCUS_GAINED (timestamp=22919098666 windowid=2 event=SDL_EVENT_WINDOW_FOCUS_GAINED data1=0 data2=0)
2026-02-18 14:18:43.673 testsprite[3756:29242] SDL EVENT: SDL_EVENT_WINDOW_MOUSE_ENTER (timestamp=22919144625 windowid=2 event=SDL_EVENT_WINDOW_MOUSE_ENTER data1=0 data2=0)
2026-02-18 14:18:45.359 testsprite[3756:29242] SDL EVENT: SDL_EVENT_DROP_POSITION (data='(null)' timestamp=24604802541 windowid=2 x=186.406250 y=341.257812)
2026-02-18 14:18:45.379 testsprite[3756:29242] SDL EVENT: SDL_EVENT_DROP_POSITION (data='(null)' timestamp=24624594500 windowid=2 x=187.152344 y=342.378906)
2026-02-18 14:18:45.792 testsprite[3756:29242] SDL EVENT: SDL_EVENT_DROP_POSITION (data='(null)' timestamp=25037900916 windowid=2 x=189.406250 y=310.539062)
2026-02-18 14:18:45.809 testsprite[3756:29242] SDL EVENT: SDL_EVENT_DROP_POSITION (data='(null)' timestamp=25054856166 windowid=2 x=189.406250 y=310.281250)
2026-02-18 14:18:46.262 testsprite[3756:29242] SDL EVENT: SDL_EVENT_DROP_POSITION (data='(null)' timestamp=25507604750 windowid=2 x=189.406250 y=310.281250)
2026-02-18 14:18:46.262 testsprite[3756:29242] SDL EVENT: SDL_EVENT_DROP_FILE (data='/Users/icculus/x.index' timestamp=25507765416 windowid=2 x=189.406250 y=310.281250)
2026-02-18 14:18:46.262 testsprite[3756:29242] SDL EVENT: SDL_EVENT_DROP_COMPLETE (data='(null)' timestamp=25507799750 windowid=2 x=189.406250 y=310.281250)

If there's a program (either source or a binary) I can take a look at, I can try it here and see what happens.

[icculus]

(Bumping to 3.4.4 for now, to revisit shortly.)