Gtk.Toolbar::popup-context-menu

function callback(toolbar, x:Number, y:Number, button:Number, ):Boolean;

Emitted when the user right-clicks the toolbar or uses the keybinding to display a popup menu.

Application developers should handle this signal if they want to display a context menu on the toolbar. The context-menu should appear at the coordinates given by x and y. The mouse button number is given by the button parameter. If the menu was popped up using the keybaord, button is -1.

toolbar: instance of Gtk.Toolbar that is emitting the signal
x: the x coordinate of the point where the menu should appear
y: the y coordinate of the point where the menu should appear
button: the mouse button the user pressed, or -1
Returns: return true if the signal was handled, false if not