				 
				 README.TXT

      Release Notes for Microsoft (R) Visual Basic (TM) Professional Edition

				Version 3.00

		  (C) Copyright Microsoft Corporation, 1993

This document contains release notes for Microsoft Visual Basic Professional
Edition version 3.0 for Windows.  Information in this document is more 
current than that in the manuals or online Help.

------------------------
How to Use This Document
------------------------
To view README.TXT on screen in Windows Notepad, maximize the Notepad window.

To print README.TXT, open it in Windows Write, Microsoft Word, or another 
word processor.  Then select the entire document and format the text in 
10-point Courier before printing.

     *******************************************************************
     Read Part 1 - Software Installation Information - before installing.
     *******************************************************************

========
Contents
========

Part    Description
----    -----------
 1      Software Installation Information
 2      Notes and Tips
 3      Notes for "Learning Microsoft Visual Basic" Tutorial
 4      Notes for Microsoft Visual Basic Online Help
 5      Notes for Microsoft Visual Basic "Programmer's Guide"
 6      Notes for Microsoft Visual Basic "Language Reference"
 7      Notes for Microsoft Visual Basic "Custom Control Reference"
 8      Notes for Microsoft Visual Basic "Data Access Guide"

=========================================
Part 1: Software Installation Information
=========================================

To install Visual Basic, use the Program Manager or File Manager to start
SETUP.EXE as you would any other Windows-based application.  For example,
if you are installing from drive A:

- From the Program Manager File menu, choose Run.
- In the Run dialog box, type A:SETUP and choose OK.

  Or

- From the File Manager, double-click the SETUP.EXE file icon 
  on drive A.

------------------------------------
File Sharing for OLE and Data Access
------------------------------------
You will need SHARE.EXE to enforce file and byte range locking if the 
following programs are running simultaneously:

- Two Visual Basic applications that perform data access
- Two instances of one Visual Basic application that performs data access
- Microsoft Access and a Visual Basic application that performs data
  access
  
If you are running Microsoft Windows 3.0 or Windows 3.1 (i.e. not
Windows for Workgroups), you will need to change your AUTOEXEC.BAT
as follows:

     SHARE /L:500 /F:5100

If the /L or the /F setting to SHARE has a larger value than listed here, 
leave the setting as it is rather than reducing it.

Please make this change as soon as possible in your system.

Note
----
If you ship .EXE files to users that use OLE or data access, they must
add this setting to their AUTOEXEC.BAT file as well.

-----------------------
Visual C++ and GRID.VBX
-----------------------
If you plan to install Microsoft Visual C++(TM) Development System for 
Windows on your system, you may overwrite the grid control in your Windows 
\SYSTEM directory.  Before installing Visual C++, make a backup of GRID.VBX.  
If you have already installed Visual C++, you can re-install GRID.VBX by 
running Setup again, choosing the Custom Installation button, and then 
selecting the Microsoft Visual Basic option.

-----------------------------------------------------
Using Visual Basic 3.0 with SQL Server and Access 1.0
-----------------------------------------------------
If you choose to install the SQL Server ODBC driver, you will find the file
INSTCAT.SQL in the \VB\ODBC directory.  This is a stored procedure file that
the SQL Server administrator must run on the server to prepare the server to
accept Visual Basic as a client.  However, this version of INSTCAT.SQL is
incompatible with Microsoft Access 1.0.  If you are also using Access 1.0 
as a client for that SQL Server, you should use the INSTCAT.SQL that was 
included with Access 1.0.  Visual Basic 3.0 will work correctly with  
INSTCAT.SQL from Access 1.0 except that it will be unable to delete indexes 
from tables.

----------------------
Setup and LZEXPAND.DLL
----------------------
Visual Basic's Setup program uses LZEXPAND to install ODBC.  If you encounter
a system error while Visual Basic is calculating free disk space, check for 
this file in your Windows \SYSTEM directory.  If an older version of 
LZEXPAND.DLL exists along your path, remove the file and continue with Setup.

======================
Part 2: Notes and Tips
======================
----------------------------------------------------
Data Access Compatibility - Visual Basic 2.0 and 3.0
----------------------------------------------------
The new functionality of the Microsoft Access engine in Visual Basic 3.0 
will affect the behavior of your VB 2.0 code.  Visual Basic 3.0 will 
now assume that all SQL statements take the form of Access SQL (see the 
Access documentation).  You can passthrough SQL to ODBC; as a second 
parameter to the CreateDynaset method, you must specify &H40 to indicate 
SQL passthrough.  Note that if you used backend-specific SQL with 
CreateDynaset, you must add this parameter.

----------
ATI Driver
----------
If you have an ATI Wonder card, moving the data control around at design
time may cause a GP fault.  Contact ATI for more information.

------------------------------------------------------
BackColor Displayed Incorrectly with 256-Color Bitmaps
------------------------------------------------------
If you have a 256-color bitmap in any control (or the form) that has a 
BackColor property, it is possible that the background color of that object 
will not display correctly if no color in the bitmap's palette matches the 
background color.

----------------------------------
"Communication Link Failure" Error
----------------------------------
If you receive a "Communication Link Failure" error when executing queries 
against a Microsoft or Sybase SQL Server, you can retry the operation with 
asynchronous execution disabled.  To do this, add the following entry to 
your VB.INI file:

     [Debug]
     RmtTrace=16

Visual Basic will continue to run synchronously until this line is removed 
from VB.INI.

---------------
OLE Class Names
---------------
To get a reference to a currently running OLE application by using its class 
name, you must use:

      GetObject(, "classname")

that is, GetObject has to have an empty file name.  A file name of "" will 
create a new instance of the server for class name.  This is contradictory 
to what is documented.

--------------------------------
OLE Control: In-Place Activation
--------------------------------
The Visual Basic OLE 2.0 control supports "Inside-Out Activation," which
corresponds to "activation on GetFocus."  If a server designates this 
capability and you specify AutoActivate = GETFOCUS, then:

- The object is initially deactivated the first time the control gets the 
  focus.
- The object is not fully deactivated when the control loses focus.  
  Instead, the object is directed to tear down any floating user interface 
  it may have, such as tool pallettes.

Note that AutoActivate = GETFOCUS is only supported if the server claims to 
be "inside-out-capable," further reducing the possibility of looping
re-activation when a non-insitu server closes and gives focus back to the 
control.

-----------------------------------------------
OLE Control: Pasting Objects from the Clipboard
-----------------------------------------------
Applications that provide objects behave differently when an object is 
deleted.  When you delete an OLE object (set Action = 10), the object's 
application may or not close.  If the application does close, any objects 
on the Clipboard associated with that application may also be closed.  
Because of this, you may not be able to cut an object (copy, then delete), 
since deleting the object may also cause the data on the Clipboard to be 
deleted.

Another instance of this behavior is when you try to copy an object, then 
paste the object back onto itself.  This action may cause an error, because 
in order to paste over an existing object, the existing object is first 
deleted.  If the application associated with the object closes, and 
subsequently deletes any objects it has on the Clipboard, the Clipboard no 
longer contains an object to paste.

---------------------------------
OLE Control: The PasteOK Property
---------------------------------
The following applies to objects on the Clipboard that come from an OLE 
object:

- When PasteOK returns True, there is no guarantee that the Paste operation 
  will succeed.  For example, PasteOK returns True and the Paste fails when
  there is a linked object on the Clipboard and you are pasting into an 
  object whose OleTypeAllowed property is set to 1 (Embedded).
- PasteOK returns False when there is a linked object on the Clipboard and 
  you are pasting into an object whose OleTypeAllowed property is set to 
  0 (Linked).

------------------------
OLE Control: Link Target
------------------------
You cannot activate a linked object as hidden (set Verb = -3).  You can, 
however, activate an embedded object as hidden.

-----------------------------
OLE Constants in CONSTANT.TXT
-----------------------------
OLE has also defined two new standard verbs relating to the two states that 
an in-place-active object can have.  The following corresponding constants 
have been added to CONSTANT.TXT:

Constant                  Description
--------                  -----------
VERB_INPLACEUIACTIVATE    Object is fully in-place active, including floating 
			  UI.  Only one at a time per top-level form can be 
			  in this state.
			  
VERB_INPLACEACTIVATE      Object is semi-active; it is running and ready to 
			  respond to user input like clicking within the 
			  object or changing the mouse pointer as the user 
			  moves the mouse over different parts of the object.  
			  Any number of objects can be in this state at a 
			  time.

So, if you have a number of inside-out-capable objects on a form, where the 
user has specified AutoActivate = ONGETFOCUS, the objects take turns at
being in-place-UI-Active.  The new verbs allow the Visual Basic programmer to 
cause these objects to be in the in-place-active state.  For example, if you 
want to create a form with several of these objects, and you want the form 
to be as responsive as possible to user input, you would put the following 
code for each control into your Form_Load event handler:

     OLEControl.Verb = VERB_INPLACEACTIVATE
     OLEControl.Action = OLE_ACTIVATE 

See the file CONSTANT.TXT for more information.

------------------------------------
Windows 3.0 and the PopupMenu Method 
------------------------------------
Under Windows 3.0, pop-up menus invoked during a MouseDown event in some 
cases do not recognize menu selections made with the mouse.  If that occurs, 
you can still make a selection using the arrow keys and the Enter key.

------------------------------------------
Saving ASCII Forms in Source Code Managers
------------------------------------------
When using source code managers, you need to change the read-only bit on the 
binary file (.FRX) as well as the form file (.FRM) to save the form.

--------------------------------
Crystal Reports for Visual Basic
--------------------------------
All prices in the Crystal Reports for Visual Basic editor, CRW.EXE, are 
listed in US dollars.

If you are calling Crystal Services from outside the United States for
support or more information, please contact your local international
long distance carrier if you need assistance.

============================================================
Part 3: Notes for "Learning Microsoft Visual Basic" Tutorial
============================================================
-----------------------
Save Project Before Run
-----------------------
The Save Project Before Run Environment Option (under the Options menu)
should be set to "No" when running the "Learning Visual Basic" tutorial.
Some of the lessons may be impaired if this option is set to "Yes."  By
default, this setting is "No."

====================================================
Part 4: Notes for Microsoft Visual Basic Online Help
====================================================
------------------
Error Message Help
------------------
Online Help is not available for dialogs or error messages that occur at
design time.  For ISAM errors, use the Search dialog in Help.

--------------------------------
"Couldn't find installable ISAM"
--------------------------------
An external file dynamic link library (DLL) file couldn't be found.  This 
file is required for operations such as attaching or accessing external 
tables.

Possible causes:

1) An entry in the [Installable ISAM] section in VB.INI or <APPNAME>.INI is 
   incorrect.  For example, this error occurs if you're accessing a Paradox 
   external table, and the Paradox entry of the .INI file points to a 
   nonexistent directory.  Exit Visual Basic, make necessary corrections in 
   VB.INI or <APPNAME>.INI using Microsoft Windows Notepad or another text 
   editor, restart Visual Basic, and try the operation again.

2) One of the entries in the [Installable ISAM] section in VB.INI points to  
   a network drive, and that drive isn't connected.  Check to make sure the 
   network is available and the proper drive letter is established, and try 
   the operation again.

=============================================================
Part 5: Notes for Microsoft Visual Basic "Programmer's Guide"
=============================================================

Page   Section/Note
----   ------------
188    The New Keyword

       In the example at the top of the page, the local form
       variable F is declared with the New keyword using the 
       Dim statement.  To make the form variable and the 
       loaded form instance persist, use a Static or Global
       variable instead.

194    Determining the Type of an Object Variable

       You can use the If...TypeOf statement to determine the 
       control type of a custom control:
       
	    If TypeOf object Is objecttype  
    
       The identifier you use for 'object' is the class name of 
       the custom control.  See the section "Specific Control 
       Object Types" (p. 186) for more information.

461    The Options Property
	
       The constant values shown are in hexidecimal and should be
       preceded with the &H notation.  For example,  
       DB_SQLPASSTHROUGH = &H40, not decimal 40.  See online Help
       (Options Property) or the file DATACONS.TXT for the correct
       values.

462    The RecordSource Property

       The following text and example should be changed:

       For example, the following SQL query returns all of the columns
       in the bibliography for authors who live in New York:

	    Data1.DatabaseName = "BIBLIO.MDB"
	    Data1.RecordSource = "Select * from Titles where state = 'NY'"
	    Data1.Refresh

       The above should read:

       For example, the following SQL query returns all of the columns
       in the bibliography for publishers based in New York:

	    Data1.DatabaseName = "BIBLIO.MDB"
	    Data1.RecordSource = "Select * from Publishers where state = 'NY'"
	    Data1.Refresh

465    Adding a New Record

       In the second paragraph in this section, the last sentence
       should read, "Notice that using the buttons on the data 
       control or one of the Move methods to move to another record
       will automatically save your added record."

530    Determining How an Object Is Displayed

       In the first paragraph, the second sentence should read, 
       "the Icon check box," not "th eIcon check box."
       
550    Creating Invisible Objects

       In the sample code, the following line has incorrect syntax:

	    MyWord = ObjVar.SuggestWord MyWord
      
       The code should look like this:

	     MyWord = ObjVar.SuggestWord (MyWord)

552    Limitations in Visual Basic
       
       Under the discussion "Arrays and User-Defined Types," the third 
       bulleted item should read: "You cannot...Assign the return value 
       of a property or method to an array variable or a variable of a 
       user-defined type." 

554    Closing an Object

       In the paragraph after the sample code, second sentence:  It is 
       not true that invoking a Close method on an object sets variables
       that refer to the object to Nothing.

582    Determining the Files You Need to Distribute

       The following additional files are required for distributing 
       your Visual Basic applications:

       DLL Name       Required by (Professional Edition Only)
       --------       ---------------------------------------
       PDIRJET.DLL    Crystal Reports for Visual Basic
       PDBJET.DLL     Crystal Reports for Visual Basic
       MSAJT110.DLL   Crystal Reports for Visual Basic
       MSAES110.DLL   Crystal Reports for Visual Basic
       PDSODBC.DLL    ODBC and Crystal Reports for Visual Basic

=============================================================
Part 6: Notes for Microsoft Visual Basic "Language Reference"
=============================================================

Page   Section/Note
----   ------------
21-22  Action Property (OLE)

       In the Settings table, in Setting 5, the reference to None in the 
       second sentence of the third paragraph should read as follows: 
       "If the Paste was not successful, the OleType property will be set 
       to 3 (None)."  In Setting 12, the constant should be 
       OLE_READ_FROM_FILE, not ReadFromFile.  In Setting 14, the constant 
       should be OLE_INSERT_OBJ_DLG.

41     AutoActivate Property

       In the Note, replace the words "the double-click event" with 
       "a DblClick event."

53     BorderStyle Property

       The OLE control cannot have a setting of 2.  Remove the setting and 
       description for Setting 2 in the OLE control table.

65     Check Box Control
 
       Add DataField and DataSource to the Properties list.

82     Color Property

       The "Applies To" line should read "Common dialog (Color dialog)."

89     Common Dialog Control

       Add "FilterIndex" and "MaxFileSize" to the Properties (File dialogs) 
       list.

93     Connect Property

       In the Note, change "SourceTable" to "SourceTableName."

97     Copies Property

       The "Applies To" line should read "Common dialog (Print dialog)."

100    CreateDatabase Function

       In the code example, replace "False" with "DBVERSION10."  Also, in 
       the table above the code example, replace "DB_COMPACT_ENCRYPT" with 
       "DB_ENCRYPT."

111    Data Control

       Add UpdateControls and UpdateRecord to the Methods list.

112    Database Object

       In the Properties list, the QueryTimeout Property should be identified 
       as being available only in the Professional Edition.

117    DataText Property

       In the code example, change the two instances of "MSDRAW" to 
       "MSGRAPH."

134    DefaultExt Property

       The "Applies To" line should read "Common dialog (File dialogs)."  

185    Field Object

       The Properties list should refer to SourceField and SourceTable, not 
       SourceFieldName and SourceTableName.
  
195    FileTitle Property

       The "Applies To" line should read "Common dialog (File dialogs)."  
       Add the following to the Remarks section:
	 
       Note: If the OFN_NOVALIDATE flag is set, the FileTitle property will 
       not return a value.

198    Filter Property (Common Dialog)

       At the beginning of the topic, add "Applies To...Common dialog (File 
       dialogs)."  In the Remarks section, after the third paragraph, add 
       this text:
 
       Here is an example of a Filter in which the user can choose text 
       files or picture files that include bitmaps and icons:

	    Text(*.txt)|*.txt|Pictures(*.bmp;*.ico)|*.bmp;*.ico

199    FilterIndex Property

       The "Applies To" line should read "Common dialog (File dialogs)."

229    Frame Control

       Add the Name Property to the Properties list.

231    FromPage, ToPage Properties

       The "Applies To" line should read "Common dialog (Print dialog)."

240    GetAttr Function

       The final Sub...End Sub block in code should read as follows:

       Sub File1_Click ()
	 Const ATTR_READONLY = 1, ATTR_HIDDEN = 2       ' Declare constants.
	 Const ATTR_SYSTEM = 4, ATTR_ARCHIVE = 32
	 Dim Attr, FName, Msg   ' Declare variables.
	 If Right(Dir1.Path, 1) = "\" Then      ' See if root file.
	    FName = Dir1.Path & File1.FileName  ' Get file path.
	 Else
	    FName = Dir1.Path & "\" & File1.FileName    ' Get file path.
	 End If
	 Attr = GetAttr(FName)  ' Get attributes.
	 If Attr > 7 Then Attr = Attr Xor ATTR_ARCHIVE  ' Disregard Archive.
	 Select Case Attr       ' Look up attributes.
	    Case 0: Msg = "Normal"
	    Case ATTR_READONLY: Msg = "Read-Only"
	    Case ATTR_HIDDEN: Msg = "Hidden"
	    Case ATTR_HIDDEN +  ATTR_READONLY: Msg = "Hidden and Read-Only"
	    Case ATTR_SYSTEM: Msg = "System"
	    Case ATTR_READONLY +  ATTR_SYSTEM: Msg = "Read-Only and System"
	    Case ATTR_HIDDEN +  ATTR_SYSTEM: Msg = "Hidden and System"
	    Case ATTR_READONLY + ATTR_HIDDEN +  ATTR_SYSTEM: Msg = "Read-Only," 
					      - + Msg = " Hidden, and System"
	 End Select
	 MsgBox UCase(FName) & " is a " & Msg & " file."   ' Display message.
       End Sub

256    hDC Property

       The Usage line should read: 

	    {[form.] [commondialog. | picturebox.] | Printer.}hDC

       Also, the second paragraph of the Remarks should read, "With a common 
       dialog control, this property returns a device context for the printer 
       selected in the Print dialog box when the..." (the rest of the text 
       remains the same).

258    Height, Width Properties

       The See Also line should refer to the "Width # Statement," not the 
       "Width Statement."

274    Image Control

       Add DataField and DataSource to the Properties list.

280    InitDir Property

       The "Applies To" line should read "Common dialog (File dialogs)."

297    KeyDown, KeyUp Events

       The See Also should refer to the SendKeys Statement, not the SendKeys 
       Method.

299    KeyPress Events

       The See Also should refer to the SendKeys Statement, not the SendKeys 
       Method.

303    Label Control

       Add the DataField, DataSource, and Parent properties to the Properties 
       list.

336-   ListFields Method
338
       In the second table, the fifth and sixth entries in the Field column 
       should be SourceTable and SourceField, not SourceTableName and 
       SourceFieldName.  The code example and the headings of the table 
       below it should also refer to SourceTable and SourceField.

345    ListTables Method

       In Remarks, the first paragraph under the TableType field table should 
       read: "When you use the ListTables method to create a Snapshot, you 
       can evaluate the contents of the Attributes field in the Snapshot by
       referring to the TableDef property settings table in the Attributes
       property topic.

361    Max, Min Properties (Common Dialog)

       At the beginning of the topic, add "Applies To...Common dialog (Font, 
       Print dialogs)."

363    MaxFileSize Property

       The "Applies To" line should read "Common dialog (File dialogs)."

390    Name Property

       The "Applies To" line should include the Database object.

432    Partition Function

       In the code in Example 3, the second five lines of code duplicate 
       the first five lines and should be deleted.

439    Picture Box Control

       Add DataField and DataSource to the Properties list.

444    PopupMenu Method

       In the Syntax line, there should be a comma immediately before the y.

455    PrinterDefault Property

       The "Applies To" line should read "Common dialog (Print dialog)."

536-   SourceFieldName, SourceTableName Properties
537
       All references to SourceFieldName and SourceTableName in this topic 
       should refer to "SourceField" and "SourceTable" instead.

538    SourceTableName Property

       There should be a full entry for the "SourceTableName" topic.  See 
       online Help for the text of this topic.

565    Text Box Control 

       The second piece of art is incorrect.  It should show a text box 
       on a form but instead shows a menu title and menu items on a form.
       Also, add DataField and DataSource to the Properties list.

595    Validate Event

       In the third paragraph following the Constants table, change "edit
       buffer" to "copy buffer."

619    Trappable Errors
     
       In Appendix B, the odd header is wrong.  It should read "Trappable
       Errors," not "Trappable Error Messages."

634    Trappable Error Messages
       
       In Table B.6 ("Data Access Trappable Error Messages"), Error #3137 
       should be deleted.

===================================================================
Part 7: Notes for Microsoft Visual Basic "Custom Control Reference"
===================================================================

Page   Section/Note
----   ------------
xxii   Visual Basic Executable (.EXE) Files

       The Visual Basic run-time file is listed incorrectly. The first
       bulleted item should read VBRUN300.DLL, not VBRUN200.DLL.

147   Graph Control

      In Example 1, the following line contains two "=" characters:
		
	   Graph1.LabelText = "Data point" = Str$(i%)
	     
      The line should read:

	   Graph1.LabelText = "Data point" + Str$(i%)

148    Graph Control

       In Example 2, the following line contains two "=" characters:

	   Graph1.LabelText = "Label" = Str$(i%)
	     
       The line should read:

	   Graph1.LabelText = "Label" + Str$(i%)

176    Key Status Control
       
       The table for the Value property incorrectly states that False is 
       the default value.  The default value is determined by the state 
       of the keyboard.

180    MAPI Session Control

       There should be no footnotes, since the MAPI controls are 
       only available in Visual Basic.

186    MAPI Messages Control

       There should be no footnotes, since the MAPI controls are 
       only available in Visual Basic.

============================================================
Part 8: Notes for Microsoft Visual Basic "Data Access Guide"
============================================================

Page   Section/Note
----   ------------
23     Creating New Table Definitions

       Delete the following line of code from the example:
       
	    On Error Resume Next
