Sets the popover that will be popped up when the dropdown is clicked.
If the popover is NULL, the dropdown is disabled.
If propertySplitButton:menu-model is set, the menu model is dissociated from the button, and the property is set to NULL.
the popover
Sets the popover that will be popped up when the dropdown is clicked.
If the popover is NULL, the dropdown is disabled.
If propertySplitButton:menu-model is set, the menu model is dissociated from the button, and the property is set to NULL.