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RENDER()

function RENDER(context, value)

Renderer function for a Canvas view element defined by the user.

This function is called every time rendering is required for the region associated with the Canvas object it is registered with. Specifically, it is invoked when the view becomes the current view, when the value property of the Canvas object is updated, or when rendering is deemed necessary by fsmapper due to the impact of the redraw process of other Canvas objects.

Parameters

ParameterTypeDescription
contextRenderingContextRendering context that uses the View to which the Canvas object belongs as the output destination. This rendering context has its origin and scaling factor set according to the coordinate system of the Canvas.
valueAny typeThe value property of the Canvas object is passed.

Return Values

fsmapper does not reference the return value of this function.

See Also