GH_AttributesTInvalidateCanvas 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

public virtual bool InvalidateCanvas(
	GH_Canvas canvas,
	GH_CanvasMouseEvent e
)

Public Overridable 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.

Implements

IGH_AttributesInvalidateCanvas(GH_Canvas, GH_CanvasMouseEvent)

Reference

GH_AttributesT Class

Grasshopper.Kernel Namespace

GH_AttributesAddLanguageSpecificTextSet("LST4AFA9A7D_0?cs=&lt;|vb=(Of |cpp=&lt;|fs=&lt;'|nu=(");TAddLanguageSpecificTextSet("LST4AFA9A7D_1?cs=&gt;|vb=)|cpp=&gt;|fs=&gt;|nu=)");AddLanguageSpecificTextSet("LST4AFA9A7D_2?cpp=::|nu=.");InvalidateCanvas Method

Parameters

Return Value

Implements

Reference

GH_AttributesTInvalidateCanvas Method