TDateTimePIcker calendar not responding in Linux gtk2
lazarus / 31-LCL

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BobT · 2022-07-16 22:35

I have a largeish application with several forms using
TDateTimePicker, and after updating to Lazarus 2.2.2 / fpc 3.2.2 I
have noticed a malfunction of TDateTimePicker, which is used on
several forms. Numeric entry works normally, but the existing calendar
dropdowns in tkDate mode do not respond to mouse clicks or keystrokes.
Previous builds using 2.0.10 do not show this.

If I place a new TdateTimePicker on the main form it appears to
respond normally, but not on most of the other forms in the
application. There are one or two existing forms on which a new
DateTimePicker does appear to work normally, but there is no obvious
connection between the form content, complexity or depth of nesting
and whether or not the DatetIme Picker functions as expected. These
are all normal modal forms. I have done a complete clean up and build
with no difference in the results.

I have created a completely new minimal form which is opened from a
simple button on the main form, and the DateTimePicker on that shows
the same malfunction; on the same form TDateEdit calendar works as
expected, TTimeEdit dropdown I can select hours but not minutes. This
is consistent on all forms where the problem is evident.

The problem appears to be specific to Linux (I am using gtk2) , cross-
compiled builds for Win32 and Win64 appear to work normally.

System is MX Linux 19.2 64 bit, fully up to date.