Insert buttons into a window's caption area

[Time_Runner]

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;wait, or show a dialog
opt waitmsg 1
wait 10

;destroy
DestroyWindow hwnd

Every time I take away the wait statement and show a dialog the window in the top left corner disappears. I even tried using notepad as the dialog and I just can not keep the window in the top left corner from disappearing. This might be because I always use the handle to the window and just discovered xclass and do not understand it.

Can you show me an example that will show the window in the top left corner of the screen as long as notepad is opened?