   Using Tabs 101
  Im trying to create a window that will have tabs so I can group my output data.  I have figured out how to create tabs as a child window, but I cant figure out how to add content each particular tab.Does the content for each tab have to be created in a child window of its respective tab?  How do you tell your program to switch content when you select another tab?  If you can help, please drop me some code to help me understand.  Thanks! 