button
click (button press and button
release event) in the middle of the first GdkWindow found that belongs
to 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 button click
location, see gdkTestSimulateButton
for details.gtkTestWidgetClick(widget, button, modifiers)
widget
button
modifiers