Help me to fix an old viwport grid lisp.

[mhy3sx]

Hi , I use this lisp for years but I have a problem. When I Polyline on layout and select to create viewport from object , when I select the new viewport in properties say VIewport (1) and not Viewport. Then when  I run the attach lisp to create the grid on viewport say that no viewport selected. Can any one help me to fix this ?

 

Thanks

Surveygridneg.lsp

[BlackBox]

It says Viewport (1) because you've created a Viewport by object (Polyline), so they're linked. 

 

Your code works fine here and only seems to error when the Viewport is on a locked layer, and the linked Polyline is not... but I am unable to produce the 'no viewport selected' you mentioned. 

[mhy3sx]

Is any way the code to support  Viewport (1) ?

 

Thanks

[BlackBox]

11 minutes ago, mhy3sx said:

Is any way the code to support  Viewport (1) ?

 

Thanks

It already supports that. 

 

Viewport (1) just means that there's 1 object linked... click the dropdown and you'll see the Viewport and Polyline. 

 

The code only allows selection of "VIEWPORT", so when you select it on screen, the Polyline is ignored. 

[mhy3sx]

so you said to add support viewports and polylines?

[BIGAL]

Something like this, takes into account the twist in a viewport.