objective c - NSPopUpButton in a toolbar with fixed image similar to Pages.app UI -


the toolbar in pages (numbers, keynote) has nspopupbutton fixed image (irrespective of menu selected). using view debugging turns out standard nspopupbutton fixed image.

according nspopupbutton docs regarding setimage:,

this method has no effect. image displayed in pop button cell taken selected menu item (in case of pop menu) or first menu item (in case of pull-down menu).

this means standard nspopupbutton has non-standard behaviour.

how implemented? because setimage: has no effect, subclass nspopupbuttoncell , overriding -drawimage:withframe:inview: has no effect (because never called).

nspopupbutton in toolbar

the problem here confusion: pull down menus display menu's first menu item image/title.

don't use -setimage: display static image in -pull down menu. instead set first element of menu image/title want display , add selection options additional menu items.

@volker absolutely correct. built-in behaviour set image setting first element in menu not using setimage: or settitle:.

example, https://github.com/danieljfarrell/toolbar-with-pull-down-menu

screenshot


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