Using Java Robot class in Parfeval

Now I want to use Java Robot Class in a function. That function will be called by parfeval(), which will be evaluated in background.

• It seems that Java robot class can not be used in parfeval().*

May I kindly know if there is a solution for this problem?

Answer 1

[Edric Ellis]

If you're referring to java.awt.Robot, then this will not work since the MATLAB worker executing the body of the parfeval function is a separate process. You might be better off writing some Java code to spawn a thread to drive the java.awt.Robot.

[Rick Han]

Thanks a lot for answering!

And actually, the parfeval seems not to recognize this command "robot=Robot()" or "robot = java.awt.Robot;" . This is the step to construct a java Robot object.

So you mean I need to write some codes to construct this object bu myself?

Thanks a lot!

[Walter Roberson]

Possibly you need to import it, or make sure it is on the java class path?

Answer 2

[Walter Roberson]

Each worker has its own process, and that process has no assigned graphics and no assigned keyboard or mouse. When you use the Java Robot class within that process, there is no keyboard or mouse to simulate presses of.