wx:dc%

Superclass: wx:object%

A wx:dc% object is a device context onto which graphics and text can be drawn. It represents a number of output devices in a generic way; e.g. a canvas has a device context and a printer also has a device context.

An instance of wx:dc% cannot be created directly. Instead, instances of wx:dc% subclasses can be created, such as wx:memory-dc%.

The drawing methods, such as draw-rectangle, accept inexact real values as arguments, but the results are only defined when the drawing coordinates are in the range -16383 to 16383. This restriction applies to the coordinates both before and after offsets and scaling factors are applied.

Methods:

• begin-drawing
• blit
• clear
• destroy-clipping-region
• draw-arc
• draw-ellipse
• draw-icon
• draw-line
• draw-lines
• draw-point
• draw-polygon
• draw-rectangle
• draw-rounded-rectangle
• draw-spline
• draw-text
• end-doc
• end-drawing
• end-page
• get-background
• get-brush
• get-char-height
• get-char-width
• get-clipping-region
• get-font
• get-logical-function
• get-map-mode
• get-pen
• get-pixel
• get-size
• get-text-background
• get-text-extent
• get-text-foreground
• max-x
• max-y
• min-x
• min-y
• ok?
• set-background
• set-background-mode
• set-brush
• set-clipping-region
• set-colour-map
• set-device-origin
• set-font
• set-logical-function
• set-map-mode
• set-optimization
• set-pen
• set-text-background
• set-text-foreground
• set-user-scale
• start-doc
• start-page
• try-colour