MPxSurfaceShape objects can have an associated marking menu. A MEL function that defines the marking menu for the node must be created with the following name: $nodeName + “DagMenuProc”. An example is as follows:

global proc apiMeshDagMenuProc( string $parent, string $child )

{

	setParent -m $parent;

	// Simple marking menu with 3 items at

	// N north, W west and E east.

	string $cmd = "hide " + $child;

	menuItem -l "Hide" -rp "N" -c $cmd;

	$cmd = "boundingBoxDisplayCtrl(1,\"\");";

	menuItem -l "Show bounding box" -rp "W" -c $cmd;

	$cmd = "boundingBoxDisplayCtrl(0,\"\");";

	menuItem -l "Hide bounding box" -rp "E" -c $cmd;

}

Executing the MEL script above and then right-clicking on the custom surface shape node will invoke the marking menu.