VBA - Preview

[bedasy]

I'm programing a VBA application for AutoCAD 2005. I would like to show a preview of a 2DPolyline on a userform before actually drawing it in modelspace.

Some threads on the Autodesk Forum mentioned the dwgthumbnail.ocx but the closest thing I found on my computer is CThumbnailCtrl.ocx (by Autodesk). Unfortunately, there is no help file, so I don't know what it can do nor how to use it.

Any one can help?

 

[borgunit]

I do not think that is what you want. You probably want an image control for your form (but I am not sure what and how you are doing).

"Everybody is ignorant, only on different subjects." — Will Rogers

 

[CADSTUDENT]

In the UserForm module, use Additem method to display 2DPolyline preview. For example:

Sub Userform_initialize()
For Each 2dpoly in ThisDrawing.2dpoly
2dpolyobj.AddItem 2dpolyline
next 2dpoly
End Sub

Hope this helps,

John

 

[bedasy]

First, I'd like to tank you for your answer but unfortunately they are not very helpfull. Second, I hope my english is not to hard to understand (I speak french).

To be more explicit, I want to draw structural shape (W, HSS, Channel, L...) in modelspace using a closed 2DPolyline. I already program the Sub in VBA to draw them and it's working perfectly.

When the macro starts, the user must input some parameters in a form (type of shape, dimensions of the section...). What I woud like to do is to show the 2Dpolyline on the Form before drawing it in model space.

A image control can do, but it's not the perfect solution.

Basically, I want to be able to draw on a userForm using AutoCAD feature. Is there a control in VBA or VB6 I can used?

Thanks

 

[hendie]

as far as I am aware, there are no controls which allow interactive "drawing" on a from at runtime.
Whenever I've had to do something along similar lines, I get around it by using a series of pictures and change the visibility as requried. It's not great but it works for my purposes

 

[IFRs]

VB6 has drawing capability, easy for your situation. I am not at home right now so I can't send you code snippets, but my program solicits design information and draws the object in a VB form, then creates a dxf file for import into autocad. It is a stand alone exe, not a VBA application inside Autocad. Do you think this would help?

 

[borgunit]

This shows how to draw with vb. Worth a peek.

http://64.233.167.104/search?q=cache:JVk2sOUH4-sJ:

http://www.infj.ulst.ac.uk/~cnugent...+vb+draw+lines+runtime&hl=en&client=firefox-a

"Everybody is ignorant, only on different subjects." — Will Rogers

 

[hendie]

not to throw a spanner in the works but the original question was about controls for VBA, not VB. While the two are very similar in some respects, there are a whole lot of things not available to the VBA programmer.

 

[CADSTUDENT]

Hendie, you are correct. Also, VB does not have have ACAD object commands and methods like in VBA.