OpenLayer Offline Manual

Canvas

Canvas holds the information of the target surface of the rendering routines. The surface may be the screen (or actually, the backbuffer of the screen) or the surface may be a selected Bitmap.

Member functions

SetTo	Selects the active rendering surface
Refresh	Refresh the contents of the active rendering surface
Fill	Fills the active rendering surface with the specified color
SetClipping	Sets the clipping region of the active rendering surface
DisableClipping	Disables the clipping region
GetClippingRegion	GetClippingRegion
Width	Returns the width of the active rendering surface
Height	Returns the height of the active rendering surface
Advanced functions
SetPixelWriteMode	Selects which color components the rendering functions affect

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