Break a Loop?

[Phillip_Miller]

HI.

I'm wanting to break a continuios loop (in a VB.net dll application that has no GUI forms), when a user hits the escape key. How do I go about listning for the the escape button being pressed.

Cheers

Phillip

[Kerry Brown]

you could try comething like

//did user press ESCAPE? 
 if (HostApplicationServices.Current.UserBreak())
 {
     throw new Autodesk.AutoCAD.Runtime.Exception(
                          ErrorStatus.UserBreak, "ESCAPE pressed");
 }

as demonstrated here
http://www.theswamp.org/index.php?topic=29992.0

/// kdub

[Coolmo]

How can this be used in VB.NET and how would it actually break a loop? Is this placed in the

"Do Until ..." Statement

... or just placed somewhere in the middle of the loop. How would this react with a transaction in progress?

[rene.andreas]

//did user press ESCAPE? 
 if (HostApplicationServices.Current.UserBreak())
 {
     throw new Autodesk.AutoCAD.Runtime.Exception(
                          ErrorStatus.UserBreak, "ESCAPE pressed");
 }

Hi,
I just tried to add the statement with the HostApplicationServices above to my .NET VB addin running on Acad 2008.
But I'm unable to find the given call to the UserBreak().
Where can I find it?

Greetings
René

[Kerry Brown]

Hi,
I just tried to add the statement with the HostApplicationServices above to my .NET VB addin running on Acad 2008.
But I'm unable to find the given call to the UserBreak().
Where can I find it?

Greetings
René

in 2011 it's in acdbmgd.dll
Autodesk.AutoCAD.DatabaseServices.HostApplicationServices.UserBreak()

appears to not be in 2008.