I've found that Alt + F4 does not close our application when an UltraCombo with multiple selection has the focus. We are using version 16.2.
I have seen a number of older threads on this topic and I've checked that LimitToList is false and AllowNull is true. I also tried adding an event handler for ItemNotInList and it does not fire. The control is bound to a DataTable, except for the checkbox column.
One thing that might be different is that the application is an MDI application. Ctrl + F4 does close the form, and clicking the X button on the MDI parent form also closes the application, so it appears that Alt + F4 is the only thing that is ignored.
Are there any other properties that I should be looking at? Thanks.
Hello Alec,
I have been investigating into this behavior you are reporting with "Alt+F4" failing to close the application, and I have reproduced the behavior that you are seeing. It seems that this behavior is directly associated with the multiple selection of the UltraCombo being enabled. I believe what is happening is that for some reason, we are essentially "swallowing" the Alt key-press.
This is unexpected behavior, and as such I have asked our engineering staff to examine it further. To ensure it receives attention, I have logged this issue in our internal tracking systems with a development ID of 253271 and have created you a private support case, CAS-195842-B2H5S1 which I will link to this issue so you can track its progress. You can access that support case here.
Please let me know if you have any other questions or concerns on this matter.
Andrew, Thanks for looking into this.