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getpixelposition

Get component position in pixels

Use this function only with GUIDE, or with apps created using the figure function.

Syntax

position = getpixelposition(handle)
position = getpixelposition(handle,recursive)

Description

position = getpixelposition(handle) gets the position, in pixels, of the component specified by handle. MATLAB® returns the position as a four-element vector that specifies the location and size of the component: [distance from left, distance from bottom, width, height].

position = getpixelposition(handle,recursive) gets the position as above. If recursive is true, the returned position is relative to the parent figure of handle.

Use the getpixelposition function only to obtain coordinates for children of figures created with the figure function, or for child containers of the figure (such as panels or button groups). Results are not reliable for children of axes or other graphics objects.

Examples

This example creates a push button within a panel, and then retrieves its position, in pixels, relative to the panel.

f = figure('Position',[300 300 300 200]);
p = uipanel('Position',[.2 .2 .6 .6]);
h1 = uicontrol(p,'Style','PushButton',...
     'Units','Normalized',...
     'String','Push Button',...
     'Position',[.1 .1 .5 .2]);
drawnow;
pos1 = getpixelposition(h1)
pos1 =

   18.6000   12.6000   88.0000   23.2000

The following statement retrieves the position of the push button, in pixels, relative to the figure.

pos1 = getpixelposition(h1,true)
pos1 =
      78.6000   52.6000   88.0000   23.2000

More About

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Pixels

Distances in pixels are independent of your system resolution on Windows® and Macintosh systems:

  • On Windows systems, a pixel is 1/96th of an inch.

  • On Macintosh systems, a pixel is 1/72nd of an inch.

On Linux® systems, the size of a pixel is determined by your system resolution.