IGH_AttributesInvalidateCanvas Method

If the mouse location should cause a canvas invalidation then return true. You only need to override this function if you draw objects that are dependant on cursor positions outside the bounds of the attributes.

Namespace: Grasshopper.Kernel
Assembly: Grasshopper (in Grasshopper.dll)

Syntax

Copy

bool InvalidateCanvas(
	GH_Canvas canvas,
	GH_CanvasMouseEvent e
)

Function InvalidateCanvas ( 
	canvas As GH_Canvas,
	e As GH_CanvasMouseEvent
) As Boolean

Parameters

canvas: Type: Grasshopper.GUI.CanvasGH_Canvas
Canvas to potentially invalidate.
e: Type: Grasshopper.GUIGH_CanvasMouseEvent
Event arguments for canvas mousemove.

Return Value

Type: Boolean
True if the canvas ought to be invalidated.

Reference

IGH_Attributes Interface

Grasshopper.Kernel Namespace

IGH_AttributesAddLanguageSpecificTextSet("LSTA9C138FB_0?cpp=::|nu=.");InvalidateCanvas Method

Parameters

Return Value

Reference

IGH_AttributesInvalidateCanvas Method