Set NSWindow Size programmatically

Question

How can I set the window size programmatically? I have a window in IB and I want to set the size of it in my code to make it larger.

score 35 · Accepted Answer · answered Sep 15 '12 at 14:59

35

Use -setFrame:display:animate: for maximum control:

NSRect frame = [window frame];
frame.size = theSizeYouWant;
[window setFrame: frame display: YES animate: whetherYouWantAnimation];

Note that window coordinates are flipped from what you might be used to. The origin point of a rectangle is at its bottom left in Quartz/Cocoa on OS X. To ensure the origin point remains the same:

NSRect frame = [window frame];
frame.origin.y -= frame.size.height; // remove the old height
frame.origin.y += theSizeYouWant.height; // add the new height
frame.size = theSizeYouWant;
// continue as before

answered Sep 15 '12 at 14:59

Jonathan Grynspan

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@Leo's answer has a point, or at least I saw the same thing - the +/- should be reversed. – Nikolay Tsenkov Apr 25 '14 at 13:28
1

i have try this code but still my window moving downwards. any solution to stop moving window. – princ___y May 27 '16 at 05:15
Works perfectly for me. I wanted to programmatically resize a window controller that was being presented as a sheet view. Thanks! – Supertecnoboff Aug 17 '17 at 09:57
please note that immediate size change in viewDidAppear() would not work, put timer or something else... – Mushrankhan Jun 25 '22 at 18:31

score 12 · Answer 2 · answered Oct 23 '13 at 00:33

12

It is actually seems that +/- need to be reversed to keep window from moving on the screen:

NSRect frame = [window frame];
frame.origin.y += frame.size.height; // origin.y is top Y coordinate now
frame.origin.y -= theSizeYouWant.height; // new Y coordinate for the origin
frame.size = theSizeYouWant;

answered Oct 23 '13 at 00:33

Leo

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Or better still: frame.origin.y += (frame.size.height - theSizeYouWant.height); – mojuba Aug 06 '15 at 16:06

score 7 · Answer 3 · answered Aug 15 '17 at 05:39

7

Swift version

var frame = self.view.window?.frame
frame?.size = NSSize(width: 400, height:200)
self.view.window?.setFrame(frame!, display: true)

answered Aug 15 '17 at 05:39

kj13

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score 4 · Answer 4 · edited May 28 '14 at 01:26

4

Use setFrame:display:animate:

[window setFrame:NSMakeRect(0.f, 0.f, 200.f, 200.f) display:YES animate:YES];

edited May 28 '14 at 01:26

abmirayo

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answered Sep 15 '12 at 14:58

DrummerB

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Don't know what NSMakeFrame is. I use NSMakeRect. – Marc Rochkind Feb 12 '13 at 00:30

score 4 · Answer 5 · answered Mar 13 '19 at 15:39

4

Usually I want to resize the window based on the size of the content (not including the title bar):

var rect = window.contentRect(forFrameRect: window.frame)
rect.size = myKnownContentSize
let frame = window.frameRect(forContentRect: rect)
window.setFrame(frame, display: true, animate: true)

answered Mar 13 '19 at 15:39

Robin Stewart

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How are you deriving `myKnownContentSize`? – rustyMagnet Jul 23 '19 at 08:53
`myKnownContentSize` is just whatever size I want for my window contents. This code snippet then makes the window itself a corresponding size that accommodates the title bar (or other future OS additions). – Robin Stewart Jul 23 '19 at 18:18

score 0 · Answer 6 · answered Mar 13 '19 at 07:56

my two cents for swift 4.x 7 OSX:

a) do not call on viewDidLoad b) go on main queue... b) wait some time... so for example use:

private final func setSize(){
    if let w = self.view.window{
        var frame = w.frame
        frame.size = NSSize(width: 400, height: 800)
        w.setFrame(frame, display: true, animate: true)

    }
}

Set NSWindow Size programmatically

6 Answers6

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