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1994-05-16
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==========================================================================
VSVBX - VideoSoft Custom Control Library
==========================================================================
Vendor Information
VideoSoft
2625 Alcatraz Avenue, Suite 271
Berkeley, California 94705
Phone (510) 547-7295
FAX (510) 547-1084
Compuserve: 71552,3052
Internet: 71552,3052@compuserve.com
Distributor Information
Compuserve
at the CIS prompt type "go swreg"
VSVBX 4.0 product ID 1084 ($51)
VSVBX upgrade from previuos versions ID 2215 ($21)
==========================================================================
Version History
Digit changes indicate new versions. New versions reflect major
changes in functionality; they typically require upgrades and new
developer's license files (.DEV).
Letter changes indicate maintenance releases with minor bug fixes or
subtle improvements.
Recent versions are listed before older ones.
==========================================================================
----------------------------
4.01 Apr 1994
----------------------------
NEW PROPERTY VERSION
You can now verify the version of VSVBX in your code.
3D EFFECTS EXTENDED TO 255 CONTROLS
The maximum amount of controls to be affected by the elastic has
been extended from 30 to 255.
RESIZING BUG IN THE ELASTIC
Under certain rare circumstances, the Elastic would get confused
when resizing children of a minimized form. This has been fixed.
SYSTEM COLOR SUPPORT
The Elastic and IndexTab did not support system colors directly,
the way other controls did. Now they do.
LOW-FLICKER ELASTICS
The Elastic is smarter about repainting and causes less flicker.
UPPER RIGHT CORNER IN 3D BORDERS
The 3D borders all missed a pixel in the upper right corner. Not
anymore.
CLASHES WITH CSFORM
Using Crescent's CSForm control and the Elastic could cause GPFs.
The Elastic is more careful now and the problem has been reduced.
Note, though, that we have no control over what CSForm does. If
you encounter problems, call Crescent and tell them about it.
----------------------------
4.0 Jan 1994
----------------------------
NEW LOOK FOR THE INDEXTAB
After a lot of discussion and many requests from our users, we
decided to adopt a better "tab look". With the new look,
adjacent tabs no longer overlap, so we added optional "dog-ears"
to allow for tab scrolling with the mouse.
The new IndexTab also allows hot keys to be used with vertical
text (when the Position property is set to Left, Right, or Right
Face In).
MULTIROW PROPERTY FOR THE INDEXTAB
This property allows you to create multi-row tabs like the ones in
Microsoft Word and Excel. Set MultiRow to True and choose the
number of TabsPerPage you want to show. As you type the Caption,
the IndexTab will wrap the tabs automatically.
Note that MultiRow only works with TabsPerPage greater than zero.
When MultiRow is set to True, scrolling and BackSheets become
unnecessary and are automatically disabled.
DESIGN-TIME AUTO-SWITCHING FOR THE INDEXTAB
The IndexTab now switches child containers at design time. This
makes form design much easier.
When AutoSwitch is True, double-click on any tab with the RIGHT
mouse button to bring up the appropriate child container, just
like at runtime. Then you can easily lay out each container.
To see all containers, double-click on the blank space next to
the last tab or on the current tab itself. All containers will appear
side-by-side, arranged according to their tab sequence. To change the
tab sequnce, just drag the controls around.
If you don't want to use this new feature, set AutoSwitch to False.
FRONTABFORECOLOR PROPERTY FOR THE INDEXTAB
This new property lets you emphasize the current tab by using a different
color for its caption.
FOCUS TRACKING FOR THE INDEXTAB
The IndexTab now tracks mouse movements. When you push the mouse
button, it starts tracking the mouse. As you drag, the current tab
follows the mouse, but you don't get a click event or container
switch until you release the mouse button.
NEW "STRAIGHT" STYLE FOR THE INDEXTAB
In addition to the three original tab styles -- slanted, rounded, and
chamfered -- you can now use rectangular tabs that look like buttons.
Just like those in Windows 4.0.
MOUSEOVER PROPERTY FOR THE INDEXTAB
You can find which tab you the are moving the mouse over by trapping
the MouseMove event and reading the MouseOver property. This is useful
if you wish to display context-sensitive help for each tab.
BOLDCURRENT PROPERTY FOR THE INDEXTAB
When this property is set to TRUE, the IndexTab shows the current
tab's caption using a bold font.
BORDER PROPERTY FOR THE INDEXTAB
This property determines the width of the border around the containers
inside the IndexTab. This border is in addition to the bevel automatically
provided when one of the 3D styles is used.
DOGEARS PROPERTY FOR THE INDEXTAB
This property determines whether the IndexTab should display "dog-ears"
at the start and end of a tab row to indicate the user can scroll the
tabs. If this property is set to TRUE, the dog-ears appear automatically
when the tabs spill off the page and you can use the mouse to scroll the
tabs.
TABPICTURE, TABCOLOR, TABENABLED PROPERTIES FOR THE INDEXTAB
These new property arrays allow you to attach a picture (bitmap or icon)
to each tab, to control the color of individual tabs, and to enable
and disable specific tabs so they cannot be selected with the mouse
or keyboard.
STYLE PROPERTY FOR THE ELASTIC
This new property makes the Elastic look similar to the standard
frame control, but retaining its resizing and 3D capabilities.
The "Style" property has three settings:
0 - Default: this is the original Elastic Style.
1 - Frame Top: this looks like the standard frame.
2 - Frame Bottom: this looks like the standard frame but with
the caption below the Elastc instead of across
the top.
TAGPOSITION PROPERTY FOR THE ELASTIC
This new property allows the TagLabels to be placed either to the
left or above each tagged control. In previous versions, the
TagLabels always appeared to the left of the tagged controls.
Label sizes are stil determined by the TagWidth property.
NEW SETTINGS FOR THE ELASTIC'S BEVELINNER AND BEVELOUTER PROPERTIES
In addition to the Inset and Raised settings, the Elastic
now has "5 - Fillet", "6 - Groove", and "7 - Shadow" 3D effects.
Note: The Shadow effect is available for inner bevels only.
SHADOWCOLOR PROPERTY FOR THE ELASTIC
The "ShadowColor" property allows you to define the color for
the shadow created when the "BevelInner" property is set to
"7 - Shadow".
TABCAPTION BUG IN THE INDEXTAB
The index tab would not change the last tab caption properly
if the old last tab caption was an empty string. This was fixed.
SPLITTER BARS CAN NOW BE USED WITH TAGLABELS
The old Elastic did not allow Splitter bars to coexist with
TagLabels. That limitation has been removed.
QUOTE BUG IN THE AWK
The Awk did not handle embedded quotes correctly. Now it does:
Only quotes that appear in the beginning of a field are seen as
quotes. Embedded quotes are seen as regular characters.
FILTERQUOTES PROPERTY FOR THE AWK
The "FilterQuotes" property forces the Awk to remove leading and
trailing quotes from fields when "MatchQuotes" is set to True.
For example,
VSAwk1 = "Name 'John McAdam' Age 23"
VSAwk1.MatchQuotes = True
VSAwk1.FilterQuotes = False
? VSAwk1.F(2)
'John McAdam'
VSAwk1.FilterQuotes = True
? VSAwk1.F(2)
John McAdam
VAL PROPERTY FOR THE AWK
This new property gives the Awk a powerful function evaluator.
Set the Caption property to a mathematical expression and the
"Val" property returns its value.
For example,
VSAwk1 = "(1+2)*3^2"
? VSAwk1.Val
27
The following operators are supported, according to their
priority:
Prty Op Description Op Description
---- -- --------------- -- ---------------
6: () subexpressions
5: ^ raise to power
4: * times / divide
% modulus \ divide and truncate
3: + plus - minus
2: > greater >= greater or equal
< less <= less or equal
= equal <> not equal
1: & and | or
The following built-in functions are supported (they are
case-insensitive):
abs, sin, cos, tan, atn, log, exp
The Awk evaluator also supports variables. When the expression
parser finds a token it cannot interpret, if fires the new Awk
event "Variable". This event has three parameters:
Variable - Name of the variable that needs to be evaluated
Value - Value of the variable
Accept - Flag that indicates the variable is valid
Your event handler will typically read the variable name from
the "Variable" parameter, supply its value through the "Value"
parameter, and set the "Accept" flag to indicate the variable
is valid. If the variable name is not valid, return without
setting the"accept" parameter and Awk will generate a "Bad Token"
error.
For example, if your program defines variables "x" and "y", your
event handler might look like this:
Sub VSAwk1_Variable (Variable$, Value!, Accept%)
Accept% = True
Select Case Variable$
Case "X", "x"
Value! = GlobalX!
Case "Y", "y"
Value! = GlobalY!
Case Else
Accept% = False ' unrecognized variable
End Select
End Sub
*Note: To keep the code fast and compact, reentrant calls are not
allowed. This means you may not use the "Val" property while
handling the "Variable" event.
If an error occurs while evaluating an expression, the
"Error" property is set to one of the codes listed below.
*Always* check the "Error" property after using "Val".
6 - Syntax
7 - Bad Token
8 - Unbalanced Brackets
9 - Division by Zero
10 - Argument domain error
11 - Argument singularity
12 - Overflow range error
13 - Partial loss of significance
14 - Total loss of significance
15 - The result is too small to be represented. (This condition is not currently supported.)
16 - Not Reentrant (see *Note above)
----------------------------
3.0d Nov 1993
----------------------------
VSVBX LOOKS HARDER FOR LICENSE AND HELP FILES
Previous versions looked for the license file in the directory where
the VBX was loaded from, and showed the about box if the license
file was not found or if the license file was invalid.
The new version still looks for license and help files in the
directory where the VBX was loaded from. If it doesn't find the
files there, it looks in the Windows\System directory and then in
the Windows diretory.
If it can't find the license file anywhere, it shows the about box.
If it finds an invalid license file (e.g., older version), it
informs the user.
NICER-LOOKING MOUSE POINTERS FOR SPLITTER BARS
We finally gave in and made custom mouse pointers for resizing
windows with splitter bars. The new pointers look like the ones
in the Windows file manager.
INDEXTAB ALIGN PROPERTY BUG FIXED
When the IndexTab's Align property was set to anything other than
"0 - None", VB sometimes complained of errors while loading the form,
and created a log file saying that the Width property could not be set.
We have never seen this documented anywhere, but apparently the
standard Align property must be declared AFTER the standard Left and
Width properties. Note that this has to do with the way the VBX
itself is written, not with VB programs.
We moved the Align property to the proper position (after Left and Width)
and the problem disappeared. Unfortunately, this may cause problems
when loading projects created with previous versions of VSVBX that
1 - Had IndexTab controls with the Align property set to Align Top or
Align Bottom AND
2 - Were saved in binary format or compiled as EXEs.
The solution to this is as follows:
1 - Load the old project with the old VBX (3.0c or older).
2 - Save the project in text format.
3 - Quit VB.
4 - Load the new VBX (3.0d or newer).
5 - Restart VB and reload the project.
6 - Save or compile as you wish.
We realize this may cause problems to some of our users and wish we
could have fixed this problem without affecting older projects,
but it really was not possible.
PROPORTIONAL SPACING BUG IN THE ELASTIC
** Fixed in 3.0d:
Set the Elastic's AutoSizeChildren property to '7 - Proportional', then
to '0 - None'. Move the child controls around the Elastic. Set
AutoSizeChildren back to Proportional. The controls return to their
original position. This has been fixed in 3.0d.
----------------------------
3.0c Oct 1993
----------------------------
NEW SETTING FOR INDEXTAB POSITION
Due to popular demand, we added the Right Face In tab position.
This is the same as the original Right position but with text
facing into the form instead of out.
INDEXTAB DID NOT FIRE THE CLICK EVENT
** Fixed in 3.0c:
The IndexTab did not fire the Click event if you set the CurrTab
property to the same value it already had.
ELASTIC RESIZING WHEN BORDERWIDTH AND CHILDSPACING = 0
** Fixed in 3.0c:
Sometimes the Elastic failed to resize itself when the BorderWidth
and ChildSpacing properties were set to zero.
----------------------------
3.0b Oct 1993
----------------------------
ELASTIC RESIZING IN MDI FORMS
** Fixed in 3.0b:
The Elastic did not get along with MDI forms. Now it does.
BETTER LOOKING 3D FOR THE INDEXTAB
The new 3D appearance follows Microsoft's new standard style
for IndexTabs.
----------------------------
3.0a Oct 1993
----------------------------
INDEXTAB REPAINTING WAS OVER-OPTIMIZED
** Fixed in 3.0a:
The IndexTab sometimes skipped a few steps when repainting the
screen. This was done to improve speed, but it worked only 99%
of the time, and sometimes left parts of the window blank.
UNLOADING FORMS DURING INDEXTAB CLICK EVENT
** Fixed in 3.0a:
Unloading a form during an IndexTab Click event procedure sometimes
caused a GPF.
==========================
VERSION 3.0 Sep 1993
==========================
GENERAL IMPROVEMENTS
Faster loading forms, smaller VBX, new manual, 20+ new features.
INDEXTAB IMPROVEMENTS
** New Properties and Settings:
BackSheets, TabCaption, TabsPerPage, TabOutLineColor,
Chamfered Style
** Other improvements:
Enhanced 3D look, smoother tab scrolling, faster flicker-free redraws,
set tab order based on position rather than ZOrder, automatic TrueType
font conversion for side tabs.
ELASTIC IMPROVEMENTS
** New Properties and Settings:
AccessKey, BevelChildren, MaxChildSize, MinChildSize, WordWrap.
AutoSizeChildren has three new settings: 'Elastics Horizontally',
'Elastics Vertically', and 'Proportional'.
AWK IMPROVEMENTS
** New Properties and Settings:
Match Quotes, PosAt, FileMode.
The FS property has improved features, and the maximum line length
was increased from 255 bytes to 64k.
-------------------
2.2c Jul 1993
-------------------
MISSING PROPERTIES ADDED TO ELASTIC AND INDEXTAB
The properties are Hwnd and ContextID. We also added a ShowFocusRect
property to the IndexTab.
UNEVEN SPACING SCRAMBLING CHILDREN
** Fixed in 2.2c:
Shrinking and growing an Elastic with AutoSizeChildren set to Uneven
sometimes changed to order of the child controls.
-------------------
2.2a Jul 1993
-------------------
ELASTIC HANDLING GRAPHICAL CONTROLS
Reduced flicker and improved speed when stretching graphical
controls (Image, Shape, and Label controls).
MULTIPLE ACCESS KEYS IN TABS
Each tab can have its own access (alt, &) key.
==========================
VERSION 2.2 May 1993
==========================