Opening file & singals

[Mateusz 'vArDo' Bilinski <vardo fr pl>]

Hello.
I've handled opening file with filechooserdialog and it works great. But
files open are graphically represented. The case is that the opening
procedure writes to a pixmap and the it is redraw to window in my expose
event handler. 

The result is that after I open a file it is not shown on the screen
because expose event is not emitted (cause nothing changed graphically).
My questing is: Can I manually emit signals? I'm interested in expose
event, but the question is more/less general. If I can, the question is
how? :)

Thanks for any anwsers in advance.

vArDo