Order of WM_Paint, WM_erasebkgnd, WM_size

[73195]

Hi,
I am very novice user and want to learn the internal order of commands wm_paint, wm_erasebkgnd,wm_size. I am trying to write a software

a) sometimes doesn't erase the background and draw another graphic onto background
b) erases the background on resize of window or at user's request.

I wrote something which contaings something like

case WM_ERASEBKGND:
if (flag == 0) //don't erase
return 0;

but something is wrong, the deletion of background is delayed sometimes. That is why I ask the order of these signals. thank you.

 

[Cagliostro]

1. There is no order of received messages on which you can rely, there is no predefined order on receiving messages
and it is wrong to create an aplication which relies on some message order. You always should suppose what messages are totally unordered.
2. Don't say signals to messages. Signals are quite other things.

Ion Filipski