Send the space bar to window but keep it inactive

[pctechtv]

My windows is identified like this.

int w=win("Hurricane Sandy Blows Wild Wind.f4v - VLC media player" "QWidget")

I want to send the space (space bar) key to the window (I guess to the variable "w") but I don't want to activate(bring it to the front) the window.

any body have some ideas on how?

Thanks