This function returns whether a #GdkEventButton should trigger a
context menu, according to platform conventions. The right mouse
button always triggers context menus. Additionally, if
gdk.keymap.Keymap.getModifierMask returns a non-0 mask for
gdk.types.ModifierIntent.ContextMenu, then the left mouse button will
also trigger a context menu if this modifier is pressed.
This function should always be used instead of simply checking for
event->button == gdk.types.BUTTON_SECONDARY.
This function returns whether a #GdkEventButton should trigger a context menu, according to platform conventions. The right mouse button always triggers context menus. Additionally, if gdk.keymap.Keymap.getModifierMask returns a non-0 mask for gdk.types.ModifierIntent.ContextMenu, then the left mouse button will also trigger a context menu if this modifier is pressed.
This function should always be used instead of simply checking for event->button == gdk.types.BUTTON_SECONDARY.