Resizing an Event may lead to unwanted and automatic scrolling of the Calendar
Answered: This issue should be fixed now in the latest sandbox build (2025.4.6750). If the problem persists, please let me know.
preventDefault() on DayPilot.Scheduler.onTimeRangeSelecting
Answered: Hi Leo, This can’t be done in onTimeRangeSelecting, but you can use onGridMouseDown instead. This event is fired on mouse down, before any action is performed. You can cancel time range selecting the...
Border not showing up in AllDay Events, and Scroll Bar
Answered: As far as I can see, the event border seems to work fine on all-day events: onBeforeEventRender: args => {
args.data.borderColor = "red";
} If it doesn’t show properly in your app, I recommend ...
DayPilot.CellArray.invalidate
Answered: Hi Leo, The purpose of the invalidate() method is to clear the cached cell customization results (the args.cell.properties values set in onBeforeCellRender). It doesn’t force a refresh of the cells. ...
TypeScript: Missing args.cell.row on DayPilot.Scheduler.onBeforeCellRender
Answered: Hi Leo, It’s now fixed in the latest sandbox build (2025.4.6726).
React Scheduler > Expose event move and resize start
Answered: Hi Andy, These events are now available in the latest sandbox build (2025.4.6724).
React Scheduler > Click and drag on blank space in the timeline to scroll
Answered: This works on touch devices because it’s supported natively there. On other devices, you can use a touchpad or a mouse wheel to scroll in both directions. Emulating this with mouse down + drag is not...
React Scheduler > Sticky time header (1st group only for now) on horizontal scroll
Answered: This is what Floating Time Headers feature does. It should be enabled by default, so it looks like you might have turned it off.
React Scheduler > Mismatching time header groups values
Answered: The value of args.header.end is correct: "2025-11-10T00:00:00" is the exact time point marking the end of the group. However, you can’t simply use the date-only part of this date/time value when gene...
React Scheduler > Additional blank group at the bottom
Answered: This is a special spacing div that is required for proper vertical synchronization of the grid and the row headers. It is marked with scheduler_default_rowheader which makes it look like row header. ...
List of all questions.