2D Barcode VCL组件快速入门与功能概述

Barcode

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8.  If you want to save the barcode symbol to a picture, put a TSave2D component, such as the TSave2D_Bmp, TSave2D_Png, and
TSave2D_Svg to your form. Set the Barcode2D property of the TSave2D component to your TBarcode2D barcode component.
Then you can use the Save method of the TSave2D component to save the barcode symbol to a picture file.
9.  Also, you can use the Print method of the TBarcode2D component to print the barcode symbol to paper, or use the DrawTo
method of the TBarcode2D component to draw the barcode symbol to any TCanvas.
Note, You can bind multiple TDBBarcode2D and TBarcode2D component pairs to a data field in order to represent the data field with
multiple barcode symbols.
Use the LiveBindings (Delphi/C++ Builder XE2 or later).
1.  Put a TBarcode2D barcode component, such as the TBarcode2D_QRCode, TBarcode2D_PDF417, and TBarcode2D_RSS14 to
your form.
2.  Open the "LiveBindings Designer", click on the barcode component in the form to select it, change the "Visible Element" sub-
item of the "LiveBindings Designer" item to true in the "Object Inspector".
3.  Right-click on the barcode component in the "LiveBindings Designer", execute the "Bindable Members..." menu item, check the
"Barcode" property or the "Data" property (only for the Delphi/C++ Builder 2009 or later) in the "Bindable Members" dialog, click
on the "OK" button to close it.
4.  Link  the Barcode  property  or  the Data  property  (only  for  the  Delphi/C++  Builder  2009  or  later) of  the TBarcode2D  barcode
component to your data field in the TBindSourceDB component, or a string property of other control.
5.  If you want to represent the barcode symbol in form or QuickReport report, put a TImage control to your form, or put a TQRImage
o r TQRGzImage  control  to  your  report.  Set  the Image  property  of  the TBarcode2D  barcode  component  to  the TImage,
TQRImage,  or TQRGzImage  control. The  data  in  the  data  field will  be  represented  as  a  barcode  symbol  in  your TImage,
TQRImage, or TQRGzImage control.
6.  If you want to save the barcode symbol to a picture, put a TSave2D component, such as the TSave2D_Bmp, TSave2D_Png, and
TSave2D_Svg to your form. Set the Barcode2D property of the TSave2D component to your barcode component. Then you can
use the Save method of the TSave2D component to save the barcode symbol to a picture file.
7.  Also, you can use the Print method of the TBarcode2D component to print the barcode symbol to paper, or use the DrawTo
method of the TBarcode2D component to draw the barcode symbol to any TCanvas.
Note,  You  can  link  multiple TBarcode2D  components  to a data  field  in  order  to represent  the  data  field  with multiple  barcode
symbols.
 
 
3.3 How to use the barcode components with QuickReport
Usage:
1.  Put a barcode component, such as the TBarcode2D_QRCode, TBarcode2D_PDF417, and TBarcode2D_RSS14 to your form.
Also, put a TDBBarcode2D component to the form and link the TBarcode2D component to the TDBBarcode2D component if the
database support is required.
2.  Put a TQRImage or TQRGzImage control to your report.
3.  Set the Image property of the barcode component to the TQRImage or TQRGzImage control.
You  can  link  single TQRImage  or TQRGzImage  control  to  multiple TBarcode2D  components  in  order  to  display  multiple
barcode  symbols  in  the TQRImage  or TQRGzImage  control  (using  the LeftMargin  and TopMargin  properties  to  specify  the
position for every barcode symbol).
Note:
2D Barcode VCL Components User Manual
14

If the barcode symbol cannot be read, please don't reduce/stretch the barcode symbol (set the Stretch property to false). You can
change the barcode symbol size by changing its Module property value.
Also, please check whether the TQRImage or TQRGzImage control is large enough to accommodate entire barcode symbol.
 
 
3.4 How to use the barcode components with FastReport
Usage:
1.  Edit your report, put a TfrxPictureView control to your report in order to present the barcode symbol.
2.  Put a barcode component, such as the TBarcode2D_QRCode, TBarcode2D_PDF417,  and TBarcode2D_RSS14 to your form
that the TfrxReport component is in it.
Also, put a TDBBarcode2D component to the form and link the TBarcode2D component to the TDBBarcode2D component if the
database support is required.
3.  Create the OnBeforePrint event function for the TfrxReport component.
In the event function, change the properties of  the TBarcode2D  component such  as Barcode, Module,  and Orientation,  and
adjust the bitmap size of the TfrxPictureView control in order to accommodate entire barcode symbol, then use the DrawTo
method of the TBarcode2D component to draw the barcode symbol to the TfrxPictureView control.
For example:
var
AWidth, AHeight, ASymbolWidth, ASymbolHeight: Integer;
begin
Barcode2D_QRCode1.Barcode := '1235678';
Barcode2D_QRCode1.Module := 1;
......
Barcode2D_QRCode1.DrawToSize(AWidth, AHeight, ASymbolWidth, ASymbolHeight);
with  TfrxPictureView(frxReport1.FindObject('Picture1')).Picture.Bitmap do
begin
  Width := AWidth;
  Height := AHeight;
  Barcode2D_QRCode1.DrawTo(Canvas, 0, 0);
end;
end;
Note, if you use old FastReport 2.x, please use the OnBeginBand event.
 
 
3.5 How to use the barcode components with ReportBuilder
Usage:
1.  Edit your report, put a TppImage control to your report in order to present the barcode symbol.
2.  Put a barcode component, such as the TBarcode2D_QRCode, TBarcode2D_PDF417,  and TBarcode2D_RSS14 to your form
that the TppReport component is in it.
Also, put a TDBBarcode2D component to the form and link the TBarcode2D component to the TDBBarcode2D component if the
2D Barcode VCL Components User Manual
15

database support is required.
3.  Create the OnBeforePrint event function for the TppReport component.
In the event function, change the properties of  the TBarcode2D  component such  as Barcode, Module,  and Orientation,  and
adjust the bitmap size of the TppImage control in order to accommodate entire barcode symbol, then use the DrawTo method of
the TBarcode2D component to draw the barcode symbol to the TppImage control.
For example:
var
AWidth, AHeight, ASymbolWidth, ASymbolHeight: Integer;
begin
Barcode2D_QRCode1.Barcode := '1235678';
Barcode2D_QRCode1.Module := 1;
......
Barcode2D_QRCode1.DrawToSize(AWidth, AHeight, ASymbolWidth, ASymbolHeight);
ppReport1Image1.Picture.Bitmap.Width := AWidth;
ppReport1Image1.Picture.Bitmap.Height := AHeight;
Barcode2D_QRCode1.DrawTo(ppReport1Image1.Picture.Bitmap.Canvas, 0, 0);
end;
 
 
3.6 How to use the barcode components with ACE Reporter
Usage:
1.  Edit your report, put a TsctImageLabel control to your report in order to present the barcode symbol.
2.  Put a barcode component, such as the TBarcode2D_QRCode, TBarcode2D_PDF417,  and TBarcode2D_RSS14 to your form
that the TsctReport component is in it.
Also, put a TDBBarcode2D component to the form and link the TBarcode2D component to the TDBBarcode2D component if the
database support is required.
3.  Create the OnBeforePrint event function for the TsctImageLabel control.
In the event function, change the properties of  the TBarcode2D  component such  as Barcode, Module,  and Orientation,  and
adjust the bitmap size of the TsctImageLabel control in order to accommodate entire barcode symbol, then use the DrawTo
method of the TBarcode2D component to draw the barcode symbol to the TsctImageLabel control.
For example:
var
AWidth, AHeight, ASymbolWidth, ASymbolHeight: Integer;
begin
Barcode2D_QRCode1.Barcode := '1235678';
Barcode2D_QRCode1.Module := 1;
......
Barcode2D_QRCode1.DrawToSize(AWidth, AHeight, ASymbolWidth, ASymbolHeight);
with SctImageLabel1.Picture.Bitmap do
begin
  Width := AWidth;
  Height := AHeight;
  Barcode2D_QRCode1.DrawTo(Canvas, 0, 0);
end;
end;
2D Barcode VCL Components User Manual
16

RvBitmap.Width := RvReport.XI2U(AWidth / Scale);

RvBitmap.Height := RvReport.YI2U(AHeight / Scale);

RvBitmap.MatchSide := msBoth;

Barcode2D_QRCode1.DrawTo(TmpBitmap.Canvas, 0, 0);

RvBitmap.Image.Assign(TmpBitmap);

finally

TmpBitmap.Free;

end;

......

end;

3.8 How to generate the EAN.UCC composite barcode symbol

Usage:

1. Put a 2D barcode component TBarcode2D_CCA, TBarcode2D_CCB, or TBarcode2D_CCC to your form.

Also, put a TDBBarcode2D component to the form and link the 2D barcode component to the TDBBarcode2D component if the

database support is required.

2. Put a linear barcode component to your form. The TBarcode2D_RSS14, TBarcode2D_RSSLimited, and

TBarcode2D_RSSExpanded can be used as the linear component. The TBarcode1D_UPCA, TBarcode1D_UPCE,

TBarcode1D_UPCE0, TBarcode1D_UPCE1, TBarcode1D_EAN8, TBarcode1D_EAN13, and TBarcode1D_EAN128

components can be used as linear barcode component too, they are in the 1D Barcode VCL Componnts package. Note, only

the TBarcode1D_EAN128 component can be used as the linear barcode component if you use the TBarcode2D_CCC as the

2D barcode component.

Also, put a TDBBarcode2D component (the linear barcode component is the TBarcode2D_RSS14, TBarcode2D_RSSLimited,

or TBarcode2D_RSSExpanded) or a TDBBarcode1D component (if the linear barcode component is the TBarcode1D_UPCA,

TBarcode1D_UPCE, TBarcode1D_UPCE0, TBarcode1D_UPCE1, TBarcode1D_EAN8, TBarcode1D_EAN13, or

TBarcode1D_EAN128) to the form and link the linear barcode component to it if the database support is required. The

TDBBarcode1D component is in the 1D Barcode VCL Componnts package.

3. Set the Linear property of the 2D barcode component to the linear barcode component.

4. Put a TImage control to your form, or put a TQRImage or TQRGzImage control to your report.

5. Set the Image property of the 2D barcode component to the TImage, TQRImage, or TQRGzImage control.

Note:

If you use the TBarcode1D_UPCA, TBarcode1D_UPCE, TBarcode1D_UPCE0, TBarcode1D_UPCE1, TBarcode1D_EAN8,

TBarcode1D_EAN13, or TBarcode1D_EAN128 component as the linear barcode component, its Height property should be set to a

value larger than zero.

The Image property of linear barcode component should not be normally set, the Image property's value of the 2D component will be

used.

3.9 How to add a logo to barcode symbol

Usage:

2D Barcode VCL Components User Manual

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