Instance Property

viewsNeedDisplay

A Boolean value that indicates whether any of the window’s views need to be displayed.

Declaration

@property BOOL viewsNeedDisplay;

Discussion

The value of this property is YES when any of the window’s views need to be displayed; otherwise, NO. You should rarely need to set this property; the NSView method needsDisplay and similar methods set it automatically.

See Also

Drawing Windows

- display

Passes a display message down the window’s view hierarchy, thus redrawing all views within the window, including the frame view that draws the border, title bar, and other peripheral elements.

- displayIfNeeded

Passes a displayIfNeeded message down the window’s view hierarchy, thus redrawing all views that need to be displayed, including the frame view that draws the border, title bar, and other peripheral elements.

allowsConcurrentViewDrawing

A Boolean value that indicates whether the window allows multithreaded view drawing.