> For the complete documentation index, see [llms.txt](https://docs.apryse.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.apryse.com/ios/get-started/samples/recttest.md).

# Rect

Sample Obj-C code for using Apryse SDK to change a page's MediaBox using Rect class.

Sample Obj-C code for using Apryse SDK to change a page's MediaBox using Rect class. Learn more about our [iOS SDK](/ios/guides.md) and [PDF Editing & Manipulation Library](/core/page-manipulation/manipulation.md).

{% tabs %}
{% tab title="Obj-C" %}
{% code lineNumbers="true" %}

```objc
//---------------------------------------------------------------------------------------
// Copyright (c) 2001-2024 by Apryse Software Inc. All Rights Reserved.
// Consult legal.txt regarding legal and license information.
//---------------------------------------------------------------------------------------

#import <OBJC/PDFNetOBJC.h>
#import <Foundation/Foundation.h>

int main(int argc, char *argv[])
{
    @autoreleasepool {
        int ret = 0;
        [PTPDFNet Initialize: 0];

        @try // Test  - Adjust the position of content within the page.
        {
            NSLog(@"_______________________________________________");
            NSLog(@"Opening the input pdf...");

            PTPDFDoc *input_doc = [[PTPDFDoc alloc] initWithFilepath: @"../../TestFiles/tiger.pdf"];
            [input_doc InitSecurityHandler];

            PTPageIterator *pg_itr1 = [input_doc GetPageIterator: 1];

            PTPDFRect * media_box = [[pg_itr1 Current] GetMediaBox]; 

            [media_box SetX1: [media_box GetX1] - 200]; // translate the page 200 units (1 uint = 1/72 inch)
            [media_box SetX2: [media_box GetX2] - 200];

            [media_box Update: [[PTObj alloc] init]];
        
            [input_doc SaveToFile: @"../../TestFiles/Output/tiger_shift.pdf" flags: 0];

            NSLog(@"Done. Result saved in tiger_shift...");
        }
        @catch(NSException *e)
        {
            NSLog(@"Caught PDFNet exception: %@", e.reason);
            ret = 1;
        }
        [PTPDFNet Terminate: 0];        
        return ret;
    }
}
```

{% endcode %}
{% endtab %}

{% tab title="Swift" %}
{% code lineNumbers="true" %}

```swift
//---------------------------------------------------------------------------------------
// Copyright (c) 2001-2019 by PDFTron Systems Inc. All Rights Reserved.
// Consult legal.txt regarding legal and license information.
//---------------------------------------------------------------------------------------

import PDFNet
import Foundation

func runRectTest() -> Int {
    return autoreleasepool {
        var ret: Int = 0
        
        
        do {
            try PTPDFNet.catchException {
                // Test  - Adjust the position of content within the page.
                print("_______________________________________________")
                print("Opening the input pdf...")
                
                let input_doc: PTPDFDoc = PTPDFDoc(filepath: Bundle.main.path(forResource: "tiger", ofType: "pdf"))
                input_doc.initSecurityHandler()
                
                let pg_itr1: PTPageIterator = input_doc.getPageIterator(1)
                
                let media_box: PTPDFRect = pg_itr1.current().getMediaBox()
                
                media_box.setX1(media_box.getX1() - 200) // translate the page 200 units (1 uint = 1/72 inch)
                media_box.setX2(media_box.getX2() - 200)
                
                media_box.update(PTObj())
                
                input_doc.save(toFile: URL(fileURLWithPath: NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true)[0]).appendingPathComponent("tiger_shift.pdf").path, flags: 0)
                
                print("Done. Result saved in tiger_shift...")
            }
        } catch let e as NSError {
            print("Caught PDFNet exception: \(e)")
            ret = 1
        }
        
        return ret
    }
}
```

{% endcode %}
{% endtab %}
{% endtabs %}


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