widget
.
For GTK_NO_WINDOW
widgets like GtkButton, this will often be an
input-only event window. For other widgets, this is usually widget->window.
Certain caveats should be considered when using this function, in
particular because the mouse pointer is warped to the key press
location, see gdkTestSimulateKey
for details.gtkTestWidgetSendKey(widget, keyval, modifiers)
widget
keyval
modifiers