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GetBaseClassAcceptNothing Method

If you want to allow the user to be able to press enter in order to skip selecting a something in GetPoint.Get(), GetObject::GetObjects(), etc., then call AcceptNothing( true ) beforehand.

Namespace:  Rhino.Input.Custom
Assembly:  RhinoCommon (in RhinoCommon.dll)
Since: 5.0
Syntax
public void AcceptNothing(
	bool enable
)

Parameters

enable
Type: SystemBoolean
true if user is able to press enter in order to skip selecting.
Examples
partial class Examples
{
  public static Rhino.Commands.Result AddLayer(Rhino.RhinoDoc doc)
  {
    // Cook up an unused layer name
    string unused_name = doc.Layers.GetUnusedLayerName(false);

    // Prompt the user to enter a layer name
    Rhino.Input.Custom.GetString gs = new Rhino.Input.Custom.GetString();
    gs.SetCommandPrompt("Name of layer to add");
    gs.SetDefaultString(unused_name);
    gs.AcceptNothing(true);
    gs.Get();
    if (gs.CommandResult() != Rhino.Commands.Result.Success)
      return gs.CommandResult();

    // Was a layer named entered?
    string layer_name = gs.StringResult().Trim();
    if (string.IsNullOrEmpty(layer_name))
    {
      Rhino.RhinoApp.WriteLine("Layer name cannot be blank.");
      return Rhino.Commands.Result.Cancel;
    }

    // Is the layer name valid?
    if (!Rhino.DocObjects.Layer.IsValidName(layer_name))
    {
      Rhino.RhinoApp.WriteLine(layer_name + " is not a valid layer name.");
      return Rhino.Commands.Result.Cancel;
    }

    // Does a layer with the same name already exist?
    int layer_index = doc.Layers.Find(layer_name, true);
    if (layer_index >= 0)
    {
      Rhino.RhinoApp.WriteLine("A layer with the name {0} already exists.", layer_name);
      return Rhino.Commands.Result.Cancel;
    }

    // Add a new layer to the document
    layer_index = doc.Layers.Add(layer_name, System.Drawing.Color.Black);
    if (layer_index < 0)
    {
      Rhino.RhinoApp.WriteLine("Unable to add {0} layer.", layer_name);
      return Rhino.Commands.Result.Failure;
    }
    return Rhino.Commands.Result.Success;
  }
}
Python
import Rhino
import scriptcontext
import System.Guid, System.Drawing.Color

def AddLayer():
    # Cook up an unused layer name
    unused_name = scriptcontext.doc.Layers.GetUnusedLayerName(False)

    # Prompt the user to enter a layer name
    gs = Rhino.Input.Custom.GetString()
    gs.SetCommandPrompt("Name of layer to add")
    gs.SetDefaultString(unused_name)
    gs.AcceptNothing(True)
    gs.Get()
    if gs.CommandResult()!=Rhino.Commands.Result.Success:
        return gs.CommandResult()

    # Was a layer named entered?
    layer_name = gs.StringResult().Trim()
    if not layer_name:
        print "Layer name cannot be blank."
        return Rhino.Commands.Result.Cancel

    # Is the layer name valid?
    if not Rhino.DocObjects.Layer.IsValidName(layer_name):
        print layer_name, "is not a valid layer name."
        return Rhino.Commands.Result.Cancel

    # Does a layer with the same name already exist?
    layer_index = scriptcontext.doc.Layers.Find(layer_name, True)
    if layer_index>=0:
        print "A layer with the name", layer_name, "already exists."
        return Rhino.Commands.Result.Cancel

    # Add a new layer to the document
    layer_index = scriptcontext.doc.Layers.Add(layer_name, System.Drawing.Color.Black)
    if layer_index<0:
        print "Unable to add", layer_name, "layer."
        return Rhino.Commands.Result.Failure

    return Rhino.Commands.Result.Success


if __name__=="__main__":
    AddLayer()
See Also