How to update a Custom Datatip for a GUI figure ?

I am trying to figure out how to update a custom datatip. The process is straight forward if it was for a regular plot however, when using a GUI figure it seems like that callback function does not update. I tried adding the following lines of code to the existing Callback function but was not successful.

dcm_obj= datacursormode (gcf);
datacursormode on
set (dcm_obj,'updatefcn',@myfunction)

where myfunction is the custom function that I am using to customize the font/color etc...

I would apperciate any suggestions.

Thanks in advance.

[Murugan C]

do you want to show data point dynamically whenever mouse click happend on graph?

[Wael Radwan]

No static would be enough. I would like to custom the blue color on the text given in the image attached to black.

Answer 1

[Walter Roberson]

The update function callback is only applied to new datatips, or datatips that are moved. (I am not certain at the moment whether it is called if the axes resizes.)

[Wael Radwan]

Ah I see. Everything works now when I deleted the old datatips and added new ones. I was under the assumption it auto updates which is not the case. Well thanks alot for your help !