- popup-begin CONTEXT PANEL DYNAMIC? FLAG-OR-FLAGS RECTprocedure
Starts a popup block. If DYNAMIC? is #t, the popup uses the dynamic flag. FLAG-OR-FLAGS is a symbol or list of symbols, each of which must be one of (border border-header movable scalable closable minimizable dynamic no-scrollbar title). RECT specifies the boundaries of the popup. Returns #t if the popup is visible.