[Iup-users] why not auto-refresh?

[oyster]

hello, everyone. I have compiled demo\elem\iupdialog\mdisample.c
against iup 2.6 with my old VC6, mdisample.exe works, but when I
switch between mdisample and other ms windows applications, I find
that mdisample does not refresh automatically. And that is ture for
demo\elem\iupcanvas\iupcanvas.c and demo\elem\iupcanvas\iupcanvas3.c
Why does iup acts like this? It seems too strange on ms windows. How
can I tell IUP application to auto-refresh the display in every
sourcecode?
thanks