Correct use of get(H,'Property Name')

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Jonas Reichert
Jonas Reichert 2017-1-29
评论： Stephen23 2017-1-29
When I use get(H,'Property Name') and insert H manually, it works fine, but as soon as I try to define a variable H and insert it afterwards, get does not work any longer, no matter which data type i choose for H. How can I solve this problem?
  1 个评论
Stephen23
Stephen23 2017-1-29
"..I try to define a variable H and insert it afterwards.."
What would be the desired effect? For example:
H = 1.2;
get(H,'Children')
What should this do???

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回答（2 个）

Star Strider
Star Strider 2017-1-29
In this context, ‘H’ is a handle, and the output of the creation of a specific object (for example figure, text, line etc.). You cannot just assign ‘H’ as an arbitrary variable and then use it with the get or set functions, because it has no meaning. Unless ‘H’ refers to an object with properties, using it with set or get is meaningless.
Image Analyst
Image Analyst 2017-1-29
Not sure what you're doing to define H but if you did it properly it should work. For example
H = handles.slider1; % Get the handle to your slider control.
% Now get the slider value:
sliderValue = get(H, 'Value'); % or sliderValue = H.Value in new MATLAB versions.

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