vbox6: clear screen on guest triggered blanking

An invalid bitmap is exactly once set during blanking, use this as hint
to clear the GUI content. Same as done in vbox5.

Fixes 
This commit is contained in:
Alexander Boettcher 2024-07-26 14:54:45 +02:00 committed by Christian Helmuth
parent f552b26fb9
commit 56ee01bc8c

View File

@ -214,6 +214,7 @@ class Genodefb :
Lock();
if (_display_bitmap.isNull()) {
_clear_screen();
Unlock();
return S_OK;
}