ConstReadonlyHeightLarge: 8Limit the popup to about twenty visible items.
ReadonlyHeightLargest: 16Show as many popup items as available space allows.
ReadonlyHeightMask_: 30Internal mask of the mutually exclusive height policies.
ReadonlyHeightRegular: 4Limit the popup to about eight visible items (default).
ReadonlyHeightSmall: 2Limit the popup to about four visible items.
ReadonlyNoArrowButton: 32Show the preview without the square arrow button.
ReadonlyNone: 0Use default combo appearance and popup height.
ReadonlyNoPreview: 64Show only the square arrow button, without a preview.
ReadonlyPopupAlignLeft: 1Prefer left alignment for the popup.
ReadonlyWidthFitPreview: 128Calculate the combo width from its preview content.
Combo-box preview and popup sizing options; choose one height policy.