Active Questions
Highlight Today and Shorten Weekday Names in DayPilot Lite Monthly Calendar
Answered: You can use the onBeforeCellRender event handler to add a custom CSS class to selected cells. At this moment, the Lite version doesn’t support the onBeforeHeaderRender event. However, you can use a c...
Issue with Cell Border Selection and Event Handling
See the attached image for reference. Currently, when selecting a cell, it is possible to select the cell border and trigger an event. If this behavior is unintended, it should be treated as a bug. I...
Error init_runtime_dom_esm_bundler is not defined after update on May 20, 2026
Answered: Unfortunately, I’m not able to reproduce the error. There was no Vue-related change in the latest release (i.e. between 5.6.0 and 5.7.0). I recommend checking it with a blank project generated using ...
Right-click drag behaviour differences between Calendar and Scheduler
Answered: Hi Leo, It was just that the Scheduler was ahead. In the latest release (2026.2.6936), the Calendar supports the same behavior: it lets you select a time range using right mouse click. In this case, ...
Calendar Rows Not Matching Event Duration
Answered: By default, the Calendar aligns event boxes with the grid. You can adjust this behavior and display the exact event duration using the useEventBoxes property.
Github - Invalid dependency patterns detected in package.json
Answered: If your internal system forbids loading packages using direct https link, I recommend uploading it to your private registry (TMNA Artifactory).
onBeforeGridLineRender on DayPilot.Gantt
Answered: Hi Leo, This event handler is now available in the Gantt chart as well (in the latest sandbox build, 2026.2.6926).
args.alt, args.control, args.meta on drag events
Answered: Hi Leo, This is now added in the latest release (2026.2.6914). In addition to the event handlers, you can also get the current modifier key status using DayPilot.Calendar.getCoords() and DayPilot.Sch...
Daypilot Month - Loading Label acting odd
Hi, Monthly calendar set in “weeks” mode. I have custom left/right navigation which calls _Command in the code-behind. Navigation is working fine but although I have turned the Loading Label on in th...
Infinite scrolling issue, Chrome on Mac
Answered: Hi Leo, There is a problem with the overlay (non-persistent) scrollbar: it is not possible to detect its actual height. So the Scheduler uses a guess value (which is now 14 pixels). If it doesn’t mat...
Critical regression: Infinite scrolling jumps
Answered: The overlay scrollbar fallback is applied only to selected browsers (Firefox everywhere and Webkit on Mac). In Webkit-based browsers you can force a fixed scrollbar (as described here) to solve this ...
[Calendar] onEventResize returns incorrect args.newStart with heightSpec="BusinessHoursNoScroll" since v4.2.1
Answered: Thanks for reporting the issue. It should be fixed now in the latest sandbox build (2026.2.815).
Daypilot Month asp.net TimeRangeRightClickHandling and SelectedHandling co-existence?
Hi, OK, trying to incorporate both TimeRangeRightClickHandling (ContextMenu) and TimeRangeSelectedHandling (JavaScript)…hoping to have both a “click to enter…” type of function and still be able to u...
DayPilot.Scheduler.onEventMoved - no way to check for original even dates
Answered: Hi Leo, For this purpose, there are two events for each action, e.g. onEventMove and onEventMoved. In onEventMove, the args.e object is the original DayPilot.Event object and the new position is avai...
Cannot set properties of null (setting 'innerHTML') on disposed instance
Answered: This should be fixed now in the latest sandbox build (2026.2.6904).
DayPilot.Calendar.getCoords() sometimes contains wrong information
Answered: The getCoords() method returns the position in the grid. If you are not in the grid anymore, it returns the last position. So when the mouse is over all-day events, it doesn’t have a useful value.
Scheduler "Manual" scale with empty/undefined timeline error
Answered: This was an unintended side effect and the behavior is now reverted in the latest release (2026.2.6899). Please let me know if the problem persists.
events.findAll() in DayPilot.Calendar
Answered: Hi Leo, It’s now available in the latest sandbox build (2026.1.6887).
Gantt: Add "padding" days
Answered: Hi Leo, It’s now available as paddingDays in the latest sandbox build (2026.1.6886);
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