Vadim Zeitlin ffcdcc1617 Make wxTimeSpan::operator-() const ...

Due to an oversight, it wasn't declared as const, making it impossible to
subtract from a const wxTimeSpan object.

Fix this and add a unit test verifying that this compiles and works as
expected.

Closes #17583.

2016-06-30 19:09:04 +02:00

..

datetimetest.cpp

Make wxTimeSpan::operator-() const

2016-06-30 19:09:04 +02:00