NullParamAttributes Methods

Recursively append these attributes and all child attributes to the attribute list.

Expires the entire layout of the attributes. When overridden, implementer must place a call to the base class ExpireLayout().

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.

Determines whether a point is available for context menu popups. By default, IsMenuRegion calls IsPickRegion(PointF).

Determines whether a point is within the pickable region for this object. By default, any point inside the Bounds is treated as pickable.

Determines whether a rectangle is a valid pick region for this object. By default, the picking rectangle is intersected with the Bounds rectangle.

Determines whether a point is available for tooltip popups. By default, IsMenuRegion calls IsTooltipRegion(PointF).

Perform dedicated layout logic specific to this particular DocumentObject. This method is called from PerformLayout if the existing layout is stale.

Generate a new instance GUID for the owner object.

Generate a new instance GUID for the owner object. Do not use this overload unless you're > 1.95m and called David.

Recompute the layout for these attributes. This function is automatically called during Drawing operations, so you typically don't have to.

This method will always be called exactly once prior to Render(). This would be a good place to make sure all the necessary GUI data is up and running.

Override this function to supply custom Render logic.

Utility function for derived classes. This method draws all the wires going into the left side of the attributes.

Utility function for derived classes. This method draws all the wires going into the left side of the attributes.

Render these attributes into a Canvas control. This function places calls to PrepareForRender() and Render(), you should override those.

Populates the Grasshopper tooltip with all relevant data. If this function returns True, it is assumed that all possible fields have been filled out and the tooltip is ready for display.