Detecting left click event in Rhino (without timers)

Aside from a few posts that partially address this issue, I haven't seen a functional method laid out for detecting left mouse clicks within the rhino viewport sans timer. Please direct me if I've missed it.

I'm building a series of menus within Visual Studio that rely on detecting which geometry is selected or not. At this point, an event being raised for any left-mouse click within a rhino viewport would be helpful (VB). Once detected, I have the code to determine which, if any, geometry is selected or not.

Thanks!

Replies to This Discussion

Permalink Reply by David Rutten on August 13, 2012 at 1:55pm

Hi Nathan,

I don't think it's possible. Rhino consumed left-clicks and displays menus by itself sometimes. You'll need to ask Steve Baer or Dale Fugier though and the best place to do that would be on the Rhino plug-in newsgroup.

David Rutten

david@mcneel.com

Poprad, Slovakia

Permalink Reply by Steve Baer on August 13, 2012 at 2:44pm

Most people get this type of functionality by listening to select/deselect events. There are several events on RhinoDoc for this (DeselectObjects, DeselectAllObjects, SelectObjects). This works best since mouse clicks aren't the only way to select objects.

Permalink Reply by Nathan Lowe on August 13, 2012 at 4:07pm

Okay thanks. Sounds like a more solid approach.

Permalink Reply by michael sprinzl on August 14, 2012 at 8:03am

Try this....

public class MyHandler: Rhino.UI.MouseCallback
{
protected override void OnMouseDown(Rhino.UI.MouseCallbackEventArgs e)
{

    if(e.Button == MouseButtons.Left)
    {
    // check for selected geometry
    }
    base.OnMouseDown(e);
}
}

Permalink Reply by Nathan Lowe on August 22, 2012 at 3:16pm

Michael,

I've converted your solution to vb.net (I'm more familiar), and for starters, am just trying to pop a msgbox with the event.

Public Class MyHandler
Inherits Rhino.UI.MouseCallback
Protected Overrides Sub OnMouseDown _

(e As Rhino.UI.MouseCallbackEventArgs)

      If e.Button = MouseButtons.Left Then
        msgbox("test")
      End If
      MyBase.OnMouseDown(e)
    End Sub
End Class

This is a bit out of my league... am I even close? I can't get it to work. thanks.

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