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ActiveX/VBA Technical Newsletter - July 2000

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ActiveX/VBA Technical Newsletter - July 2000  
This document is part of    AutoCAD VB(A) Newsletter Archive     


AutoCAD ActiveX/VBA Technical Newsletter - July 31st. 2000
==========================================================
/Note: Have you missed a Newsletter issue? Visit our Newsletter archive at
the following URL:/

http://adn.autodesk.com/techsupp/techsupp/docs/newsletters.htm
  

Dear AutoCAD ActiveX/VBA Developer,
  

Table of Contents:
==================
1 - ADDING & REMOVING CUSTOM CONTROLS AT RUN TIME.
2 - NEW OR UPDATED DEVNOTES.
  

1 - ADDING & REMOVING CUSTOM CONTROLS AT RUN TIME
=================================================
Question:
How to add & remove custom controls such as DWGThumbnail, Volo View,
Whip etc., at run time in Visual Basic?

Answer:
To add custom controls such as DWGThumbnail, Volo View, Whip etc., at
run time we need to know the control's ProgId. The ProgId can be
obtained from the vendor of the control or by searching through the
registry.

Once the ProgId is known all that is required is to declare a control
object of the type required and add it to the form with the appropriate
ProgId.

Steps to create a sample project in VB
--------------------------------------
1. Create a new Standard.Exe project. Form1 is created by default.
2. Place two command buttons towards the bottom of the form with their
default names, leaving sufficient space at the top of the form for
the control.
3. Add the following code to the code window of Form1.

Private MyCtl As Control

Private Sub Command1_Click()
    On Error Resume Next
    'DwgThumbnail
    'Set MyCtl = Form1.Controls.Add("AUTOCAD.DwgThumbnailCtrl.1", _
    "SCtl")
  
    'Whip
    Set MyCtl = Form1.Controls.Add("WHIP.WhipCtrl.1", "SCtl")
  
    'VoloView Express
    'Set MyCtl = Form1.Controls.Add("AvViewX.AvViewX.1", "SCtl")
  
    ' show the test control.
    MyCtl.Visible = True
    MyCtl.Height = 2000
    MyCtl.Width = 2000
  
    'DwgThumbnail
    'Change the location as required
    'MyCtl.object.DwgFileName = "d:\acad2000\tmp.dwg"
  
    'Whip
    'Change the location as required
    MyCtl.object.StreamName = "d:\acad2000\model.dwf"
  
    'VoloView
    'Change the location as required
    'MyCtl.object.src = "d:\acad2000\model.dwf"
End Sub

Private Sub Command2_Click()
    On Error Resume Next
  
    'Removes the control
    Form1.Controls.Remove "SCtl"
End Sub

Uncomment the appropriate lines if you wish to use DwgThumbnail or Volo
View controls.

NOTE: Do not reference these controls in your VB project and also
please make sure that you have the controls registered properly before
executing the code.

For more information regarding adding controls and accessing the
control's events, please refer to documents Q190670 & Q188577 on the
MSDN CD collection.
  

2. - NEW OR UPDATED DEVNOTES.
=============================

RENAMING OR COPYING AN ANONYMOUS BLOCK
/cgi-bin/solution.pl?SID=55537

PURGING ANNYMOUS BLOCKS
/cgi-bin/solution.pl?SID=55997

PASSING VARIABLES BETWEEN LISP AND VBA
/cgi-bin/solution.pl?SID=57837

DELETING XDATA
/cgi-bin/solution.pl?SID=56457

CORRESPONDING BLOCKREFERENCE OF AN ATTRIBUTEREFERENCE
/cgi-bin/solution.pl?SID=56037
  
  

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