gtk:accelerator-valid (keyval mask)

keyval -- an unsigned integer with a GDK keyval
mask -- a gdk:modifier-type value

True if the accelerator is valid.

Determines whether a given keyval and modifier mask constitute a valid keyboard accelerator. For example, the GDK_KEY_a keyval plus GDK_CONTROL_MASK is valid - this is a Ctrl+a accelerator. But, you cannot, for instance, use the GDK_KEY_Control_L keyval as an accelerator.