MATLAB: Drawing a circle on top of an ActiveX control

activex controlannotation;gui

Hi,
I am using an ActiveX control made by IDS to view the output of a microscope camera called the 'uEye'. This allows me to see the video stream from the microscope camera. I have made a GUI using GUIDE and everything is working okay.
As an additional feature, I would like to draw a circle on top of the ActiveX control so that I can keep track of where my laser is pointing in the microscope. I have tried using the 'annotation(ellipse)' function in Matlab, but it always draws the circle behind the ActiveX control.
Does anyone know a way to force the ActiveX control to be in the background, and the circle in the foreground?

Best Answer

Trying 'uistack' did not solve my problem. This is because the ActiveX control cannot be manipulated with 'uistack'. Only 'uicontrol' elements can.
However, I was able to place a button on top of the ActiveX control that serves the purpose of marking my laser spot by creating the button after the ActiveX control in the 'OpeningFcn'. Due to the draw order of components that have the same parent, the ActiveX control is drawn first, then the button on top. The key is making the GUI the parent of both the ActiveX control and button.
Thanks, Kevin
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