[0.5 windows] transaction list column headers "flicker" when switching accounts

[Karel Kolman]

I hope this is the last windows related bug report from me...

again windows, wx 2.8.9.2

1. Switch between accounts.
2. Watch the column headers shrink and then be spread to full size.

Ideally Freeze/Thaw calls would hide this thing from the user, but does not seem to be the case in MSW wx windows.

[Karel Kolman (kolmis)]

as of wx 2.8.9.1 adding calls to Freeze/Thaw of ListCtrl's parent remove the "flicker".

see r177 of my 0.5 branch for a MSW specific patch, not sure if it's the right way to go, i sure am no wxwidgets guru.

bug upstream reported here
https://sourceforge.net/tracker/index.php?func=detail&aid=2675117&group_id=225207&atid=1064157

one more thing to note, Freeze/Thaw calls in GTK version of wx 2.8.9.1 don't seem to do anything,
there is a patch commited 12 months ago, see http://trac.wxwidgets.org/changeset/52305 , but no trace of it in wx 2.8.9.1 as far as i can tell...

[Michael Rooney (mrooney)]

Thanks, I can confirm this as well. I think a simpler approach would be to override Freeze/Thaw on GOLV to always Freeze/Thaw the parent, or just manually do this in setAccount in OLV; I don't see any harm in doing this on all platforms, it can only reduce flicker!

[Karel Kolman (kolmis)]

I had thought about plainly overriding the Freeze/Thaw methods the way you're saying, but I wasn't sure of it not having any side effects (like the parent.Freeze calling child's Freeze cycle, but that probably is not the way it works)

It sure would be a better way to provide this fix as a mixin plugged into TransactionOLV not patching ObjectListView's code, since it may be then easier to update the OLV component from upstream.