Programming Reference
| BackColor |
Returns or sets the background color of BarCodeWiz.
The BackColor property is ignored if the
BackStyle property setting is 0
(Transparent).
For maximum readabilty by barcode scanners, BackColor
should be in high contrast with ForeColor
. |
Syntax
BarCodeWiz1.BackColor [ = color]
The settings for color are
| Setting |
Description |
| Normal RGB colors |
Colors specified by using the Color palette
or by using the RGB or QBColor functions in code. |
| System Default colors |
Colors specified by system color constants listed
in the Visual Basic (VB) object library in the Object
Browser. |
|
| BackStyle |
Returns or sets the background style of BarCodeWiz.
The BackColor property is ignored
if the BackStyle property setting is 0 (Transparent). |
Syntax
BarCodeWiz1.BackStyle [ = number]
The settings for number are
| Constant |
Setting |
Description |
| Transparent |
0 |
Background color and any graphics are visible
behind the control. |
| Opaque |
1 |
The control's BackColor
property setting fills the control and obscures
any color or graphics behind it. |
|
| Barcode |
| Returns or sets the value of Barcode. This value cannot
be empty. |
Syntax
BarCodeWiz1.Barcode [ = string]
Keep in mind that not all symbologies (types of barcodes)
support all ASCII values. For example, Code 128 C supports
numbers only.
See Symbology for more details. |
| BarcodeHeight |
Returns or sets the height of the barcode (bars only
- not the full component). This value cannot be zero.
BarcodeHeight is measured in HiMetric units (0.01 millimeter)
for highest accuracy.
1 inch = 2540 * 0.01 millimeter |
Syntax
BarCodeWiz1.BarcodeHeight [ = number] |
| BarcodeTextPosition |
| Returns or sets the position of the barcode
text (human readeable) in relation to the barcode. |
Syntax
BarCodeWiz1.BarcodeTextPosition [ = number]
The settings for number are |
| Constant |
Setting |
Description |
| None |
0 |
Text is not displayed. |
| Top_Left |
1 |
Text is positioned above the barcode, left-aligned. |
| Top_Right |
2 |
Text is positioned above the barcode, right-aligned. |
| Top_Center |
3 |
Text is positioned above the barcode, centered. |
| Bottom_Left |
4 |
Text is positioned below the barcode, left-aligned. |
| Bottom_Right |
5 |
Text is positioned below the barcode, right-aligned. |
| Bottom_Center |
6 |
Text is positioned below the barcode, centered. |
| BearerBars |
| Returns or sets the value indicating whether
bearer bars are displayed. Bearer bars are two horizontal
lines on top and bottom of a barcode, which may be used
to increase scanning accuracy of certain symbologies. Most
commonly, they are used with Interleaved 2 of 5. |
Syntax
BarCodeWiz1.BearerBars [ = boolean]
The settings for boolean are |
| Setting |
Description |
| True |
Bearer bars are displayed. |
| False |
Bearer bars are not displayed. |
| Border |
| Returns or sets the border surrounding BarCodeWiz. |
Syntax
BarCodeWiz1.Border [ = number]
The settings for number are |
| Constant |
Setting |
Description |
| No_Border |
0 |
Border is not displayed. |
| Thin_Solid |
1 |
Thin, rectangular border. |
| Thin_Dash |
2 |
Thin, rectangular border with dashed lines. |
| Thin_Dot |
3 |
Thin, rectangular border with dotted lines. |
| Thin_DashDot |
4 |
Thin, rectangular border with dash-dotted lines. |
| Thin_Rd_Solid |
5 |
Thin border with rounded edges. |
| BottomText |
| Returns or sets the value of BottomText. |
Syntax
BarCodeWiz1.BottomText [ = string]
In order to hide the BottomText line, set string
to an empty value. |
| BottomTextAlign |
| Returns or sets the horizontal alignment
of BottomText. This property has no effect when
BottomText is empty. |
Syntax
BarCodeWiz1.BottomTextAlign [ = number]
The settings for number are |
| Constant |
Setting |
Description |
| Left |
0 |
BottomText is aligned with the left side of the
barcode. |
| Right |
1 |
BottomText is aligned with the right side of
the barcode. |
| Center |
2 |
BottomText is in the center, below the barcode. |
| ForeColor |
Returns or sets the foreground color of BarCodeWiz.
This property affects the color of the barcode, text, bearer
bars and the border.
For maximum readabilty by barcode scanners,
BackColor should be in high contrast
with ForeColor. |
Syntax
BarCodeWiz1.ForeColor [ = color]
The settings for color are
| Setting |
Description |
| Normal RGB colors |
Colors specified by using the Color palette
or by using the RGB or QBColor functions in code. |
| System Default colors |
Colors specified by system color constants listed
in the Visual Basic (VB) object library in the Object
Browser. |
|
| NarrowBarWidth |
Returns or sets the width of the narrowest bar in the
barcode. This value cannot be zero. NarrowBarWidth
is measured in HiMetric units (0.01 millimeter) for highest
accuracy.
1 inch = 2540 * 0.01 millimeter |
Syntax
BarCodeWiz1.NarrowBarWidth [ = number]
In order to preserve excellent scaling ability, many measurements
in BarCodeWiz depend on the NarrowBarWidth value.
For example QuietZone property
defines its Medium_Zone setting as 15 times the NarrowBarWidth.
Because of this, keep in mind that by changing NarrowBarWidth
you may also change the overall dimensions of the component. |
| OptionalCheckChar |
An optional checksum character may be calculated
and added in order to increase scanning accuracy of a barcode.
This property affects Code 39, Code 39 Extended, Interleaved
2 of 5, and Standard 2 of 5.
Note that many symbologies (such ase UPC-A) require
an already-calculated checksum character. Do not use
OptionalCheckChar property for that purpose -- it will
be ignored. BarCodeWiz will verify the supplied checksum
character, and will notify you if incorrect. |
Syntax
BarCodeWiz1.OptionalCheckChar [ = number]
The settings for number are |
| Constant |
Setting |
Description |
| No_Check_Char |
0 |
Optional checksum character is not used. |
| Barcode_Only |
1 |
Optional checksum character is encoded into the barcode,
but not shown in text. |
| Barcode_And_Text |
2 |
Optional checksum character is encoded into the barcode
as well as shown in text. |
| Orientation |
Returns or sets the orientation of the component
in degrees.
Multiples of 90 may be used (ie. 360 is equivalent to 0
degrees) |
Syntax
BarCodeWiz1.Orientation [ = number]
The settings for number are |
| Constant |
Setting |
Description |
| Degrees_0 |
0 |
Default orientation. Component is not rotated. |
| Degrees_90 |
90 |
Component is shown at 90 degrees angle (counter-clockwise). |
| Degrees_180 |
180 |
Component is shown upside-down, at 180 degrees angle. |
| Degrees_270 |
270 |
Component is shown at 270 degrees angle (counter-clockwise). |
| Picture |
| Returns the image of the component (this
is a read-only property, not available at design-time).
You may use this property to output a barcode to printer. |
Syntax
BarCodeWiz1.Picture
Visual Basic Examples
Example 1. Send a barcode image to your printer. It will
print the barcode in the top left position on the page (0,0).
Printer.PaintPicture BarCodeWiz1.Picture, 0, 0
Printer.EndDoc
Example 2. Set the Picture property of a PictureBox (named
Picture1) to that of BarCodeWiz1.
Picture1.Picture = BarCodeWiz1.Picture |
| QuietZone |
| Returns or sets the horizontal clear space
around the barcode. Quiet zone may be required for higher
barcode readability. |
Syntax
BarCodeWiz1.QuietZone [ = number]
The settings for number are |
| Constant |
Setting |
Description |
| No_Zone |
0 |
No quiet zone. |
| Smallest_Zone |
1 |
Horizontal quiet zone is equal to 5 times
NarrowBarWidth . |
| Small_Zone |
2 |
Horizontal quiet zone is equal to 10 times
NarrowBarWidth . |
| Medium_Zone |
3 |
Horizontal quiet zone is equal to 15 times
NarrowBarWidth . |
| Large_Zone |
4 |
Horizontal quiet zone is equal to 20 times
NarrowBarWidth . |
| Largest_Zone |
5 |
Horizontal quiet zone is equal to 25 times
NarrowBarWidth . |
| StretchBarcodeText |
| Returns or sets the value indicating whether
the human readable barcode text is stretched to match the
width of the barcode itself. |
Syntax
BarCodeWiz1.StretchBarcodeText [ = boolean]
The settings for boolean are |
| Setting |
Description |
| True |
Text is stretched to match the width of the barcode.
Horizontal alignment in BarcodeTextPosition
is ignored. |
| False |
Text is drawn without changes. |
| Symbology |
| Returns or sets the type of barcode to be used. |
Syntax
BarCodeWiz1.Symbology [ = number]
The settings for number are
| Constant |
Setting |
Description |
| Code_39 |
0 |
Most commonly used non-retail symbology.
Note that the leading and trailing asterisks (*)
are added automatically, if not supplied.
Characters allowed:
0-9; A-Z; -.$*/+%, and space |
| Code_39_Extended |
1 |
Allows all ASCII 128 characters to be encoded
by using a double-character format. Most scanners
will need to be switched to the extended mode in
order to recognize this. |
| Code_128_A |
2 |
Allows all ASCII values between 0 and 96. This
includes special characters, such as tab or escape. |
| Code_128_B |
3 |
Allows all ASCII values between 32 and 127.
(Unlike Code 128 A, it allows the use of lower-case
letters) |
| Code_128_C |
4 |
High density, numeric only |
| Code_128_Auto |
5 |
Automatically chooses the best Code 128 subset. |
| Interleaved_2of5 |
6 |
Hight density, numeric only symbology.
Must have an even number of digits. |
| Standard_2of5 |
7 |
Numeric-only, low density. Commonly used in
libraries, blood banks, and parcels. |
| Code_93 |
8 |
Superset of Code 39.
If required, it switches to Code 93 Extended automatically. |
| Code_11 |
9 |
Uses numbers 0-9 and the dash symbol "-" |
| Codabar |
10 |
Numeric-only symbology. Each barcode, however,
must Start and end with the letters A,B,C or D.
|
| UPC_A |
11 |
Used in retail environments in North America |
| UPC_E |
12 |
Shorter version of UPC-A.
Not all UPC-A numbers can be converted to UPC-E |
| EAN_13 |
13 |
Used in retail environments outside of North
America. |
| EAN_8 |
14 |
Similar to EAN 13, but EAN 8 numbers are not
derived from EAN 13 (as is the case with UPC). |
|
| TopText |
| Returns or sets the value of TopText. |
Syntax
BarCodeWiz1.TopText [ = string]
In order to hide the TopText line, set string
to an empty value. |
| TopTextAlign |
| Returns or sets the horizontal alignment
of TopText. This property has no effect when TopText is
empty. |
Syntax
BarCodeWiz1.TopTextAlign [ = number]
The settings for number are |
| Constant |
Setting |
Description |
| Left |
0 |
TopText is aligned with the left side of the
barcode. |
| Right |
1 |
TopText is aligned with the right side of the
barcode. |
| Center |
2 |
TopText is in the center, above the barcode. |
| WideToNarrowRatio |
| Returns or sets the ratio of the wide to
narrow bar in a barcode. This property affects Code 39,
Code 39 Extended, Interleaved 2of5, Standard 2of5, and Codabar
only (these symbologies only use two bar widths). |
Syntax
BarCodeWiz1.WideToNarrowRatio [ = number]
The settings for number are |
| Constant |
Setting |
Description |
| Optimal_Ratio |
0 |
No quiet zone. |
| Smallest_Ratio |
1 |
Width of the wide bar is equal to 2 times
NarrowBarWidth . |
| Small_Ratio |
2 |
Width of the wide bar is equal to 2.25 times
NarrowBarWidth . |
| Medium_Ratio |
3 |
Width of the wide bar is equal to 2.5 times
NarrowBarWidth . |
| Large_Ratio |
4 |
Width of the wide bar is equal to 2.75 times
NarrowBarWidth . |
| Largest_Ratio |
5 |
Width of the wide bar is equal to 3 times
NarrowBarWidth . |
| CopyToClipboard |
This method stores the current image into
the clipboard as an enhanced metafile.
You may paste this image into a number of programs simply
by pressing Ctrl+V or by selecting Edit->Paste from the
menu. |
Syntax
BarCodeWiz1.CopyToClipboard
|
| SaveAs |
| This method saves the current image to disk
as an enhanced- or a Windows metafile. |
Syntax
BarCodeWiz1.SaveAs (ByVal pathname As String)
pathname is a string expression specifying the path
and filename of the file. The type of file is determined
by its three-letter extension. Possible file extensions
are wmf and emf (the latter is recommended).
The following example shows how to create (save to files)
100 barcode images (values from 1000 to 1099) in Visual
Basic:
Dim x As Integer
For x = 0 To 99
BarCodeWiz1.Barcode = 1000 + x
BarCodeWiz1.SaveAs "c:\images\" & 1000 + x & ".emf"
Next |
|
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