Requirement: bBrowser 1.4
If the bBrowser gets or loses the focus, the bBrowser examines whether in its owner the callback method ControlFocusChange() is defined and calls this with a FocusChangeEvent as argument. In the callback method e.g. the background color of the bBrowser can be changed.
The following code fragment demonstrates the proceeding:
oBrowser:Grid:BackgroundList:Add(Brush{Color{COLORGREEN}})
oBrowser:Grid:BackgroundList:Add(Brush{Color{COLORWHITE}})
oBrowser:Redraw()