canvas<%>

A canvas is a subwindow onto which graphics and text can be drawn. Canvases also receive mouse and keyboard events.

To draw onto a canvas, get its device context (see get-dc).

The canvas<%> interface is implemented by two classes:

• canvas% -- a canvas for arbitrary drawing and event handling
• editor-canvas% -- a canvas for displaying editor<%> objects

Methods

• get-dc
• min-client-height
• min-client-width
• on-char
• on-event
• on-paint
• on-scroll
• on-tab-in
• popup-menu
• warp-pointer

• accept-drop-files from window<%>
• client->screen from window<%>
• enable from window<%>
• focus from window<%>
• get-client-size from window<%>
• get-cursor from window<%>
• get-dc from 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<%>
• min-client-height from canvas<%>
• min-client-width from canvas<%>
• min-height from area<%>
• min-width from area<%>
• on-char from canvas<%>
• on-drop-file from window<%>
• on-event from canvas<%>
• on-focus from window<%>
• on-move from window<%>
• on-paint from canvas<%>
• on-scroll from canvas<%>
• 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<%>
• set-cursor from window<%>
• set-label from window<%>
• show from window<%>
• stretchable-height from area<%>
• stretchable-width from area<%>
• vert-margin from subarea<%>
• warp-pointer from canvas<%>