Detect program execution.

Hi all,

I want that the program execution stop when I launch one application using WinExec/CreateProcess/ShellExecute or another one and continue when the application that I launched close.
begin
   WinExec('App.exe', sw_normal); //open the app and wait
   // When App.exe close;
   MessageDlg('App stoped.', mtInformation,[mbOk], 0);
end;

Another solution is launch the app and track the finalization using API but I don't know the correct function.

Hope to be clear.
Regards
Paulo