NSView subView not visible after added to superView

Question

this is my final window enter image description here

i added 4 subviews (last 4 in 2nd image) to the base view. but not displaying the view. after manual resizing window the subviews appeared as below. enter image description here

how can fix it?

score 2 · Accepted Answer · answered Mar 04 '16 at 16:39

2

baseView.needsDisplay = YES;

-- or --

subview.superview.needsDisplay = YES;

answered Mar 04 '16 at 16:39

geowar

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Please elaborate how calling `needsDisplay` solves the OP's issue. – JAL Mar 04 '16 at 19:32
1

He's added 4 subviews but hasn't refreshed their superview… The clue was that manually resizing made them appear. – geowar Mar 05 '16 at 11:23
Thanks @geowar, you are right. The problem is with view drawing. – Muruganandham K Mar 05 '16 at 11:48

score 0 · Answer 2 · answered Jul 17 '13 at 05:32

0

You can use NSScrollView:

    NSScrollView* scrollView = [[NSScrollView alloc] init];
    [scrollView setHasHorizontalScroller: YES];
    [scrollView setHasVerticalScroller: YES];
    self.contentView = [[NSView alloc] initWithFrame: NSMakeRect(0, 0, 1.0e7, 1.0e7)];
    [self.contentView addSubview: [NSImageView ...]];        
    [self.contentView addSubview: [NSImageView ...]];        
    ...
    [scrollView setDocumentView: self.contentView];
    self.view = scrollView;

Or use Minimum Size for Window.

answered Jul 17 '13 at 05:32

stosha

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y the subviews are invisible in window? – Muruganandham K Jul 17 '13 at 05:46
you can add all subviews. they should not be hide – stosha Jul 17 '13 at 05:59
i inserted scroll view in Interface builder below the baseview. but the problem still exists. – Muruganandham K Jul 17 '13 at 06:03

NSView subView not visible after added to superView

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