Switching beween Application Options

[praveen]

i am new to Linux......
Using C++. I have created a 3 Buttons. Each Button opens one Applications as a separate Process (
Say for Example Button1 opens Xterm, Button2 opens Firefox Button3 Opens Calculator
i have clicked on all 3 Buttons and all three applications are running.

i want to implement a feature like this, If i click on Button1 Again i want to make sure that Xterm that was already opened Get the Focus. i.e The I do not want to open a new Xterm But to bring the Xterm window that was previously opened on the top of all the open windows. How do i implement this?

Since the applications are started as Process i do not have a Control over them. in C++ how do i get the control of a window that is opened in linux

[michaelk]

Check for running processes to see your application is running and then either start or switch focus. How to switch focus is dependent on what desktop environment/windows manager you use.