using a png in a uicontrol in matlab

To use png images in Matlab UIControl, you can use the following steps:

1. Use imread() function to read the png file into a matrix.

2. Use uicontrol() function to create a UIControl and set its properties including the CData property.

3. Set the CData property to the matrix that you read in step 1.

Here is an example code snippet:

main.m
% read png image using imread()
img = imread('example.png');

% create a push button with the image
btn = uicontrol('Style', 'pushbutton', 'Units', 'normalized', ...
    'Position', [0.2 0.2 0.2 0.2], 'CData', img);

% show the figure window
fig = figure();
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In this example, we create a push button by calling the uicontrol() function and specifying its style as pushbutton. We also set the CData property of the button to the image matrix that we read using the imread() function.

Once you run this code, a figure window will pop up with a push button having the specified png image on it.