HP 3000 Manuals HP 3000 Manuals
Overview Your COBOL system includes syntax which supports windowing: * DISPLAY WINDOW * DISPLAY LINE * DISPLAY BOX * CLOSE WINDOW The DISPLAY WINDOW statement creates a terminal window (a rectangular region of the screen) and makes it the current window. This is like a virtual terminal, in which screen positions are relative to the top left corner of the window. The window can be removed using the CLOSE WINDOW statement; if you specify the window as being a POP-UP, the underlying display can be restored. The DISPLAY LINE statement allows you to draw lines on the terminal (real or virtual), automatically using the best mode available on the terminal. The DISPLAY BOX statement is similar, and allows you to draw boxes on the terminal. Used together, the DISPLAY LINE and DISPLAY BOX statements allow you to draw forms on the terminal.