[Inkscape-devel] How to show a warning message?

Dear Inkscape Team,

I wonder how to show a warning message. I thought this should work:

if (SP_ACTIVE_DESKTOP && SP_ACTIVE_DESKTOP->messageStack()) { SP_ACTIVE_DESKTOP->messageStack()->flash(Inkscape::WARNING_MESSAGE, "my text"); }

but called from inside an LPE doEffect function I don't see any message. It does go into the flash function. I expected that a message appears in the status bar.

Best regards,

Michael