Einzelnes StatusPanel neu zeichnen

[Amateurprofi]

Thank you Kas Op.

InvalidateRect
is not applicable for my purposes because I need the repainting immediately.

WM_DrawItem
Interesting.
However the part with the DRAWITEMSTRUCT sounds a bit complex (for me) (Pic1.jpg).
Seems that needs comparable efforts as my Procedure.
Just for Info:
In my StatusBar I can drag a panel to certain other positions, and I draw the dragged panel with different colors compared to other panels (Pic2.jpg).