topic Re: Zooming into Picture Box Image in Discussions

Zooming into Picture Box Image

ClassDendrogram — Sun, 18 Jan 2026 21:53:24 GMT

I have a window that pops up with an image, I would like to have the users able to zoom into the image to see more details but I don't see any zoom capabilities in the window. How can I accomplish this?

dt = Current Data Table();
// Plot bitmap
bitmap = New Window( (dt << Get Name()) || " Bit Map",
	pic_file = Open( file_path, png);
	pic_file << Set Size( {500, 500} );
	pb = Picture Box( pic_file );
);

Re: Zooming into Picture Box Image

jthi — Mon, 19 Jan 2026 06:11:48 GMT

Offering images through Graph Box is one option which would allow the users can use Magnifier tool from toolbar.

Edit: forgot to add example script

Names Default To Here(1);

imgBox = Graph Box(frameSize(500, 500), SuppressAxes);
win = New Window("Image", imgBox);

img = Open("$SAMPLE_IMAGES/tile.jpg", "jpg");
img << Set Size({500,500});

fb = win[framebox(1)];
fb << AddImage(Image(img));
img_seg = fb<< FindSeg(PictSeg(1));

img_seg << Fill Graph;
img_seg << lock(1);

Write();

Re: Zooming into Picture Box Image

hogi — Mon, 19 Jan 2026 18:08:49 GMT

wow, very creative/useful workaround !!!

Re: Zooming into Picture Box Image

hogi — Mon, 19 Jan 2026 19:53:08 GMT

After defining imageZoom, one can use it wherever it's needed:

PictureBoxZoom = Function( {filename},
	window:img = Open( filename, "jpg" );
	Graph Box(
		frameSize( 300, 300 ),
		SuppressAxes,
		<<AddImage( Image( window:img ), Fill Graph, Lock( 1 ) )
	);
);

New Window( "Image",
	Outline Box( "Zoom Image",
		Text Box( "press CTRL to zoom"),
PictureBoxZoom( "$SAMPLE_IMAGES/tile.jpg" ) 
	)
);