drscheme:unit:definitions-canvas%

Initializes the visiblity of the save button.

• (make-object drscheme:unit:definitions-canvas% parent editor style scrolls-per-page) -> drscheme:unit:definitions-canvas% object
      parent : frame%, dialog%, panel%, or pane% object
      editor = #f : text% or pasteboard% object or #f
      style = null : list of symbols in '(no-hscroll no-vscroll hide-hscroll hide-vscroll)
      scrolls-per-page = 100 : exact integer in [1, 10000]

  The style list can contain the following flags:

  • 'no-hscroll -- disallows horizontal scrolling
  • 'no-vscroll -- disallows vertical scrolling
  • 'hide-hscroll -- allows horizontal scrolling, but hides the horizontal scrollbar
  • 'hide-vscroll -- allows vertical scrolling, but hides the vertical scrollbar

  While vertical scrolling of text editors is based on lines, horizontal scrolling and pasteboard vertical scrolling is based on a fixed number of steps per horizontal page. The scrollsPerPage argument sets this value.

  If a canvas is initialized with #f for editor, install an editor later with set-editor.

  
  

• accept-drop-files from window<%>
• allow-scroll-to-last from editor-canvas%
• allow-tab-exit from editor-canvas%
• call-as-primary-owner from editor-canvas%
• client->screen from window<%>
• enable from window<%>
• focus from window<%>
• force-display-focus from editor-canvas%
• get-client-size from window<%>
• get-cursor from window<%>
• get-dc from canvas<%>
• get-editor from editor-canvas%
• get-graphical-min-size from area<%>
• get-height from window<%>
• get-label from window<%>
• get-parent from area<%>
• get-plain-label from window<%>
• get-size from window<%>
• get-top-level-window from area<%>
• get-width from window<%>
• get-x from window<%>
• get-y from window<%>
• has-focus? from window<%>
• horiz-margin from subarea<%>
• is-enabled? from window<%>
• is-shown? from window<%>
• lazy-refresh from editor-canvas%
• min-client-height from canvas<%>
• min-client-width from canvas<%>
• min-height from area<%>
• min-width from area<%>
• on-char from editor-canvas%
  overrides on-char from canvas<%>
• on-drop-file from window<%>
• on-event from editor-canvas%
  overrides on-event from canvas<%>
• on-focus from editor-canvas%
  overrides on-focus from window<%>
• on-move from window<%>
• on-paint from editor-canvas%
  overrides on-paint from canvas<%>
• on-scroll from editor-canvas%
  overrides on-scroll from canvas<%>
• on-size from editor-canvas%
  overrides on-size from window<%>
• on-subwindow-char from window<%>
• on-subwindow-event from window<%>
• on-tab-in from canvas<%>
• popup-menu from canvas<%>
• refresh from window<%>
• screen->client from window<%>
• scroll-with-bottom-base from editor-canvas%
• set-cursor from window<%>
• set-editor from editor-canvas%
• set-label from window<%>
• set-line-count from editor-canvas%
• show from window<%>
• stretchable-height from area<%>
• stretchable-width from area<%>
• vert-margin from subarea<%>
• warp-pointer from canvas<%>