Removing the Title bar of external application using c#

Question

My application starts up another external application.

I want to remove the title bar of this external application once it has started.

Is this feasible, and

Answer 1

Process[] processes = Process.GetProcessesByName("notepad");
IntPtr windowHandle = processes[0].MainWindowHandle;

const int GWL_STYLE = (-16); 
const UInt32 WS_VISIBLE = 0x10000000;
SetWindowLong(windowHandle, GWL_STYLE, (WS_VISIBLE));`