Inlite Knowledge Base

Table of contents

.NET API
COM API
Java API

ClearImage functionality is packaged as:

ClearImageNet.dll – .NET assembly supports AnyCPU, x86 and x64 development.
ClearImage.dll – Windows DLL supports COM and JNI entry points. The DLL is distributed as 32-bit version (ClearImage.dll) and 64-bit version (ClearImage.x64.dll). ClearImage COM is registered during the installation process.

The following describes the essential steps of using ClearImage in various programming environments.

.NET API

.NET is a higher level API implemented in the Inlite.ClearImageNet namespace of ClearImageNet.70.

The ClearImageNet assembly also contains a secondary Inlite.ClearImage namespace that is substantially compatible with the COM API, and is specifically designed to ease the migration from ClearImage COM API applications to .NET. It also supports a few low level functions that are not accessible through the Inlite.ClearImageNet namespace. Since it mirrors the COM API no additional examples are provided.

To use .NET API add reference to ClearImageNet.70 assembly. Code below demonstrates recommended use of ClearImage .NET API.

C#





		
		
			ClearImage .NET usage
			

			
			using Inlite.ClearImageNet;
// . . .
void printClearImageInfo()
{
	Console.WriteLine("ClearImage Server v." + Server.Major.ToString() + "." + Server.Minor.ToString() + "." + Server.Release.ToString() +
		 " " + Server.Edition);
	Console.WriteLine(Server.GetThreadServer().get_Info(Inlite.ClearImage.EInfoType.ciModulesList, 0));
}
// . . .
void ReadBarcodes1D(string fileName, int page)
{
	BarcodeReader reader = null;
	try
	{
		reader = new BarcodeReader();   // Create and configure reader
		reader.Code39 = true; reader.Code128 = true;
		Barcode[] barcodes = reader.Read(fileName, page);	// Read barcodes
		foreach (Barcode barcode in barcodes)   // Process results
		{ Console.WriteLine("Barcode type: " + barcode.Type.ToString() + "  Text: " + Environment.NewLine + barcode.Text); }
	}
	catch (Exception ex)
	{ Console.WriteLine("Exception: " + ex.ToString()); }
	finally
	{ if (reader != null) reader.Dispose(); }  // ClearImage 9 and latter.  Free image memory.
}
			
				
					
				
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						using Inlite.ClearImageNet;
// . . .
void printClearImageInfo()
{
	Console.WriteLine("ClearImage Server v." + Server.Major.ToString() + "." + Server.Minor.ToString() + "." + Server.Release.ToString() +
		 " " + Server.Edition);
	Console.WriteLine(Server.GetThreadServer().get_Info(Inlite.ClearImage.EInfoType.ciModulesList, 0));
}
// . . .
void ReadBarcodes1D(string fileName, int page)
{
	BarcodeReader reader = null;
	try
	{
		reader = new BarcodeReader();   // Create and configure reader
		reader.Code39 = true; reader.Code128 = true;
		Barcode[] barcodes = reader.Read(fileName, page);	// Read barcodes
		foreach (Barcode barcode in barcodes)   // Process results
		{ Console.WriteLine("Barcode type: " + barcode.Type.ToString() + "  Text: " + Environment.NewLine + barcode.Text); }
	}
	catch (Exception ex)
	{ Console.WriteLine("Exception: " + ex.ToString()); }
	finally
	{ if (reader != null) reader.Dispose(); }  // ClearImage 9 and latter.  Free image memory.
}

VB.NET





		
		
			ClearImage .NET usage
			

			
			Imports Inlite.ClearImageNet
' . . .
Private Sub printClearImageInfo()
	Console.WriteLine("ClearImage Server v." & Server.Major.ToString() & "." & Server.Minor.ToString() & "." & Server.Release.ToString() & " " & Server.Edition)
	Console.WriteLine(Server.GetThreadServer().get_Info(Inlite.ClearImage.EInfoType.ciModulesList, 0))
End Sub
' . . .
Private Sub ReadBarcodes1D(ByVal fileName As String, ByVal page As Integer)
	Dim reader As BarcodeReader = Nothing
	Try
		reader = New BarcodeReader() ' Create and configure reader
		reader.Code39 = True
		reader.Code128 = True
		Dim barcodes() As Barcode = reader.Read(fileName, page) ' Read barcodes
		For Each barcode As Barcode In barcodes ' Process results
			Console.WriteLine("Barcode type: " & barcode.Type.ToString() & "  Text: " & Environment.NewLine & barcode.Text)
		Next barcode
	Catch ex As Exception
		Console.WriteLine("Exception: " & ex.ToString())
	Finally
		If reader IsNot Nothing Then reader.Dispose() ' ClearImage 9 and latter.  Free image memory.
	End Try 
End Sub
			
				
					
				
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						Imports Inlite.ClearImageNet
' . . .
Private Sub printClearImageInfo()
	Console.WriteLine("ClearImage Server v." & Server.Major.ToString() & "." & Server.Minor.ToString() & "." & Server.Release.ToString() & " " & Server.Edition)
	Console.WriteLine(Server.GetThreadServer().get_Info(Inlite.ClearImage.EInfoType.ciModulesList, 0))
End Sub
' . . .
Private Sub ReadBarcodes1D(ByVal fileName As String, ByVal page As Integer)
	Dim reader As BarcodeReader = Nothing
	Try
		reader = New BarcodeReader() ' Create and configure reader
		reader.Code39 = True
		reader.Code128 = True
		Dim barcodes() As Barcode = reader.Read(fileName, page) ' Read barcodes
		For Each barcode As Barcode In barcodes ' Process results
			Console.WriteLine("Barcode type: " & barcode.Type.ToString() & "  Text: " & Environment.NewLine & barcode.Text)
		Next barcode
	Catch ex As Exception
		Console.WriteLine("Exception: " & ex.ToString())
	Finally
		If reader IsNot Nothing Then reader.Dispose() ' ClearImage 9 and latter.  Free image memory.
	End Try 
End Sub

ClearImage installers automatically place ClearImageNet.dll in the GAC. To use it locally (e.g. from executable file folder) remove it from the GAC either from the Inlite Control Center’s Versions tab or by running: gacutil -uf ClearImageNet.70

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COM API

This is a lower level API to support development in all languages that can interface to the Windows COM model. Code below demonstrates recommended use of ClearImage COM API.

C++





		
		
			ClearImage COM API usage
			

			
			#import  "progid:ClearImage.ClearImage" exclude("LONG_PTR") exclude("ULONG_PTR") no_namespace  named_guids
...
int main(int argc, char* argv[])
{
     CoInitialize(NULL);
    try {
        	//  Initialize COM and ClearImage Server
        ICiServerPtr Ci;
        HRESULT hr = Ci.CreateInstance(__uuidof(CiServer));
        if (FAILED(hr))
            _com_issue_error(hr);
    	    // Print version and licensing information
        cout << "ClearImage COM Version  " << Ci->VerMajor << "." << Ci->VerMinor << "." << Ci->VerRelease << endl;
        cout << Ci->GetInfo(ciModulesList, 0) << endl;
	        //  ClearImage API calls, e.g. read barcodes
		ReadBarcode1D (Ci, "SomeImageFileName", 1);
    }
    catch (_com_error e) {
        printf("_com_error: %s\n", (LPCSTR)e.Description());
    }
    catch (...) {
        printf("Unknown Exception\n");
    }
    CoUninitialize();
}
...
void ReadBarcode1D(ICiServerPtr& Ci, char* sFileName, int nPage)
{
    ICiBarcodeProPtr reader = NULL;
    try {
        reader = Ci->CreateBarcodePro();
        reader->Type = (FBarcodeType)(cibfCode128 | cibfCode39);
        reader->Image->Open(_bstr_t(sFileName), nPage); //  Open image
        reader->Find(0);
        for (int i = 1; i <= reader->Barcodes->Count; i++) {
            CiBarcode barcode = reader->Barcodes->Item[i];
			cout << "Barcode  Type= " << barcode->Type << "  Text= " << barcode->Text << endl;
        }
    }
    catch (_com_error& e) {
        printf("_com_error: %s\n", (LPCSTR)e.Description());
    }
}
			
				
					
				
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						#import  "progid:ClearImage.ClearImage" exclude("LONG_PTR") exclude("ULONG_PTR") no_namespace  named_guids
...
int main(int argc, char* argv[])
{
     CoInitialize(NULL);
    try {
        	//  Initialize COM and ClearImage Server
        ICiServerPtr Ci;
        HRESULT hr = Ci.CreateInstance(__uuidof(CiServer));
        if (FAILED(hr))
            _com_issue_error(hr);
    	    // Print version and licensing information
        cout << "ClearImage COM Version  " << Ci->VerMajor << "." << Ci->VerMinor << "." << Ci->VerRelease << endl;
        cout << Ci->GetInfo(ciModulesList, 0) << endl;
	        //  ClearImage API calls, e.g. read barcodes
		ReadBarcode1D (Ci, "SomeImageFileName", 1);
    }
    catch (_com_error e) {
        printf("_com_error: %s\n", (LPCSTR)e.Description());
    }
    catch (...) {
        printf("Unknown Exception\n");
    }
    CoUninitialize();
}
...
void ReadBarcode1D(ICiServerPtr& Ci, char* sFileName, int nPage)
{
    ICiBarcodeProPtr reader = NULL;
    try {
        reader = Ci->CreateBarcodePro();
        reader->Type = (FBarcodeType)(cibfCode128 | cibfCode39);
        reader->Image->Open(_bstr_t(sFileName), nPage); //  Open image
        reader->Find(0);
        for (int i = 1; i <= reader->Barcodes->Count; i++) {
            CiBarcode barcode = reader->Barcodes->Item[i];
			cout << "Barcode  Type= " << barcode->Type << "  Text= " << barcode->Text << endl;
        }
    }
    catch (_com_error& e) {
        printf("_com_error: %s\n", (LPCSTR)e.Description());
    }
}

PHP





		
		
			ClearImage COM API usage
			

			
			function printClearImageInfo()
{
    $Ci = new COM("ClearImage.ClearImage");
   		// Print version and licensing information
    echo "ClearImage COM Version  " . $Ci->VerMajor . "." . $Ci->VerMinor . "." . $Ci->VerRelease . "\n";
    echo $Ci->Info(1, 0) . "\n";
}

function ReadBarcode1D($fileName, $page)
{
  try {
   		// Create ClearImage COM Server
    $Ci = new COM("ClearImage.ClearImage");
    	// Creare and configure barcode reader
    $reader = $Ci->CreateBarcodePro();
    $cibfCode39 = 2;
    $cibfCode128 = 4;
    $reader->Type = $cibfCode39 + $cibfCode128;
    	//  Open image file
    $reader->Image->Open($fileName, $page);
    // Read barcodes
    $BCcount = $reader->Find(0);
    	// Process Results
    for ($i = 1; $i <= $BCcount; $i++) {
      $Bc = $reader->BarCodes($i);
      echo "Barcode Type=" . $Bc->Type . "   Text= " . $Bc->Text . "\n";
    }
  }
  catch(Exception $e) {
    print "\n" . "Exceptiom in line " . $e->getLine() . "\n" . $e->getMessage() . "\n";
  }
}
			
				
					
				
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						function printClearImageInfo()
{
    $Ci = new COM("ClearImage.ClearImage");
   		// Print version and licensing information
    echo "ClearImage COM Version  " . $Ci->VerMajor . "." . $Ci->VerMinor . "." . $Ci->VerRelease . "\n";
    echo $Ci->Info(1, 0) . "\n";
}
 
function ReadBarcode1D($fileName, $page)
{
  try {
   		// Create ClearImage COM Server
    $Ci = new COM("ClearImage.ClearImage");
    	// Creare and configure barcode reader
    $reader = $Ci->CreateBarcodePro();
    $cibfCode39 = 2;
    $cibfCode128 = 4;
    $reader->Type = $cibfCode39 + $cibfCode128;
    	//  Open image file
    $reader->Image->Open($fileName, $page);
    // Read barcodes
    $BCcount = $reader->Find(0);
    	// Process Results
    for ($i = 1; $i <= $BCcount; $i++) {
      $Bc = $reader->BarCodes($i);
      echo "Barcode Type=" . $Bc->Type . "   Text= " . $Bc->Text . "\n";
    }
  }
  catch(Exception $e) {
    print "\n" . "Exceptiom in line " . $e->getLine() . "\n" . $e->getMessage() . "\n";
  }
}

If PHP Fatal error: Class ‘COM’ not found is detected, add this section to php.ini

  [PHP_COM_DOTNET]
  extension=php_com_dotnet.dll
  fastcgi.impersonate = 0

ClearImage exceptions can be recorded in a log file configured through php.ini parameters: ‘log_errors’ and ‘error_log’.

Delphi

Add ClearImage COM to your project:

In Project menu select Import Type Library
Select ClearImage COM Server in list box
Click on the Create Unit button

For Console (DOS) application:

Add to uses ActiveX, Windows
Call CoInitialize(nil); before any ClearImage calls
Call CoUnInitialize; before exiting the application





		
		
			ClearImage COM API usage
			

			
			uses                  
   ...,ClearImage_TLB, comobj;
 // . . . 
 procedure  ReadBarcode1D(const fileName: string; const page: integer);
	var
	Ci: ICiServer;
	reader: ICiBarcodePro;
	i: integer;
	begin
	try
	  try
		begin
			 //Create and configure reader
		  Ci:=CoCiServer.Create;
		  reader:=Ci.CreateBarcodePro;
		  reader.Image.Open(fileName, page);
		  reader.Type_:=cibCode39 or cibCode128;
			// Read barcodes
		  reader.Find(0);
			// Process results
		  for i := 1 to reader.Barcodes.Count do
		  begin
			ShowMessage(reader.Barcodes.Item[i].Text);
		  end;
		end
	  except
		on E:Exception do  //Process errors
		   ShowMessage(Format('Error:%s.File:%s', [E.Message,FileName]));
	  end
	finally
	end
	end;
			
				
					
				
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						uses                  
   ...,ClearImage_TLB, comobj;
 // . . . 
 procedure  ReadBarcode1D(const fileName: string; const page: integer);
	var
	Ci: ICiServer;
	reader: ICiBarcodePro;
	i: integer;
	begin
	try
	  try
		begin
			 //Create and configure reader
		  Ci:=CoCiServer.Create;
		  reader:=Ci.CreateBarcodePro;
		  reader.Image.Open(fileName, page);
		  reader.Type_:=cibCode39 or cibCode128;
			// Read barcodes
		  reader.Find(0);
			// Process results
		  for i := 1 to reader.Barcodes.Count do
		  begin
			ShowMessage(reader.Barcodes.Item[i].Text);
		  end;
		end
	  except
		on E:Exception do  //Process errors
		   ShowMessage(Format('Error:%s.File:%s', [E.Message,FileName]));
	  end
	finally
	end
	end;

VBScript/ASP

Create ClearImage COM Server:





		
		
			ClearImage COM API usage
			

			
			Sub printClearImageInfo()
    Set Ci = CreateObject("ClearImage.ClearImage") 
	WScript.Echo "ClearImage Server v." & Ci.VerMajor & "." & Ci.VerMinor & "." & Ci.VerRelease & vbCrLf
	WScript.Echo Ci.Info(1, 0) & vbCrLf
End Sub

Sub ReadBarcode1D(fileName, page) 
  On Error Resume Next
      'Create CiServer object: 
  Set Ci = CreateObject("ClearImage.ClearImage") 
  	  ' Create and configure reader
  Set reader = Ci.CreateBarcodePro 
 	 If Err.Number <> 0 Then WScript.Echo Err.Description : Exit Sub
  cibfCode39 = 2: cibfCode128 = 4: 
  reader.Type = cibfCode39 + cibfCode128
	  ' Open Image
  reader.Image.Open fileName, page 
 	 If Err.Number <> 0 Then WScript.Echo Err.Description : Exit Sub
	  ' Read barcodes
  reader.Find 0
  	 If Err.Number <> 0 Then WScript.Echo Err.Description : Exit Sub
      ' Process results
  For Each Barcode In reader.Barcodes 
     WScript.Echo "Barcode Text= " & Barcode.Text 
  Next 
End Sub 
			
				
					
				
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						Sub printClearImageInfo()
    Set Ci = CreateObject("ClearImage.ClearImage") 
	WScript.Echo "ClearImage Server v." & Ci.VerMajor & "." & Ci.VerMinor & "." & Ci.VerRelease & vbCrLf
	WScript.Echo Ci.Info(1, 0) & vbCrLf
End Sub
 
Sub ReadBarcode1D(fileName, page) 
  On Error Resume Next
      'Create CiServer object: 
  Set Ci = CreateObject("ClearImage.ClearImage") 
  	  ' Create and configure reader
  Set reader = Ci.CreateBarcodePro 
 	 If Err.Number <> 0 Then WScript.Echo Err.Description : Exit Sub
  cibfCode39 = 2: cibfCode128 = 4: 
  reader.Type = cibfCode39 + cibfCode128
	  ' Open Image
  reader.Image.Open fileName, page 
 	 If Err.Number <> 0 Then WScript.Echo Err.Description : Exit Sub
	  ' Read barcodes
  reader.Find 0
  	 If Err.Number <> 0 Then WScript.Echo Err.Description : Exit Sub
      ' Process results
  For Each Barcode In reader.Barcodes 
     WScript.Echo "Barcode Text= " & Barcode.Text 
  Next 
End Sub

Multiple versions of ClearImage COM can be installed on the same system. Use Inlite Control Center’s Versions tab to check current version and/or activate different version.

Registration-free COM

Alternatively use this manifest to load ClearImage COM in registration-free COM configuration.


		
			Manifest
			

			
			<?xml version="1.0" encoding="utf-8" standalone="yes"?>
<assembly xmlns="urn:schemas-microsoft-com:asm.v1" manifestVersion="1.0">
	<file name="ClearImage.dll">
		<comClass description="ClearImage Class" clsid="{D836E300-A317-4C7E-BE61-D650CE242589}" 
		          threadingModel="Both" progid="ClearImage.ClearImage" 
				  tlbid="{F2BCF178-0B27-11D4-B5F5-9CC767000000}"/>
		<typelib tlbid="{F2BCF178-0B27-11D4-B5F5-9CC767000000}" version="1.0" helpdir=""/>
	</file>
	<assemblyIden
	tity type="win32" name="client" version="1.0.0.0"/>
</assembly>
			
				
					
				
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						<?xml version="1.0" encoding="utf-8" standalone="yes"?>
<assembly xmlns="urn:schemas-microsoft-com:asm.v1" manifestVersion="1.0">
	<file name="ClearImage.dll">
		<comClass description="ClearImage Class" clsid="{D836E300-A317-4C7E-BE61-D650CE242589}" 
		          threadingModel="Both" progid="ClearImage.ClearImage" 
				  tlbid="{F2BCF178-0B27-11D4-B5F5-9CC767000000}"/>
		<typelib tlbid="{F2BCF178-0B27-11D4-B5F5-9CC767000000}" version="1.0" helpdir=""/>
	</file>
	<assemblyIden
	tity type="win32" name="client" version="1.0.0.0"/>
</assembly>

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Java API

To use Java API:

Add ClearImageJ.jar to CLASSPATH. Typically file is located in C:\Program Files (x86)\Inlite\Libs folder
Java API uses several methods to locate ClearImage.dll listed below in the order of declining priority.
1. Explicit path using the CiServer.loadClearImage(ClearImageDllPath) method.
2. Folder specified by -Djava.library.path="ClearImageDllPath" on the java command line.
3. Folders specified by the PATH variable
4. COM registered DLL path, typically displayed in the Inlite Control Center’s Version Tab.
The recommended methods is a COM registered DLL This method has the lowest priority for compatibility with the existing installations. To use it neither ClearImage.dll nor ClearImage.x64.dll should be present locations of the higher priority methods.

This code demonstrates recommended use of ClearImage Java API.





		
		
			ClearImage Java usage
			

			
			 ICiServer initClearImage() {
	 try {
		 //  Create ClearImage Server
		 CiServer objCi = new CiServer();
		 ICiServer Ci = objCi.getICiServer();
		 //  Display version and licensing information
		 System.out.println("ClearImage ver " + Ci.getVerMajor() + "." + Ci.getVerMinor() + "." + Ci.getVerRelease() + 
			 "  " + Ci.getInfo(EInfoType.fromInt(6748), 0));
		 System.out.println(Ci.getInfo(EInfoType.ciModulesList, 0));  
		 return Ci;
	 } catch (Exception ex) {
		 System.out.println(); ex.printStackTrace();
		 return null;
	 }
 }

 void readBarcodes(ICiServer Ci, String fileName, int page) {
	 ICiBarcodePro reader = null;
	 try {
		 reader = Ci.CreateBarcodePro(); // Create and configure barcode reader
		 reader.setType(new FBarcodeType(FBarcodeType.cibfCode39, FBarcodeType.cibfCode128));
		 reader.getImage().Open(fileName, page); // Open image from an image file
		 int n = reader.Find(0); // Read barcodes
		 for (int i = 1; i <= n; i++) { // Process results
			 ICiBarcode Bc = reader.getBarcodes().getItem(i); // getItem is 1-based
			 System.out.println(" Barcode + type: " + Bc.getType() + "   Text: \n" + Bc.getText());
		 }
	 } catch (Exception ex) { // Process exceptions
		 System.out.println(); ex.printStackTrace();
	 } finally {
		 if (reader != null) try {
			 reader.getImage().Close(); // Close images and free memory
		 } catch (Exception ex) {;}
	 }
 }
			
				
					
				
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						 ICiServer initClearImage() {
	 try {
		 //  Create ClearImage Server
		 CiServer objCi = new CiServer();
		 ICiServer Ci = objCi.getICiServer();
		 //  Display version and licensing information
		 System.out.println("ClearImage ver " + Ci.getVerMajor() + "." + Ci.getVerMinor() + "." + Ci.getVerRelease() + 
			 "  " + Ci.getInfo(EInfoType.fromInt(6748), 0));
		 System.out.println(Ci.getInfo(EInfoType.ciModulesList, 0));  
		 return Ci;
	 } catch (Exception ex) {
		 System.out.println(); ex.printStackTrace();
		 return null;
	 }
 }
 
 void readBarcodes(ICiServer Ci, String fileName, int page) {
	 ICiBarcodePro reader = null;
	 try {
		 reader = Ci.CreateBarcodePro(); // Create and configure barcode reader
		 reader.setType(new FBarcodeType(FBarcodeType.cibfCode39, FBarcodeType.cibfCode128));
		 reader.getImage().Open(fileName, page); // Open image from an image file
		 int n = reader.Find(0); // Read barcodes
		 for (int i = 1; i <= n; i++) { // Process results
			 ICiBarcode Bc = reader.getBarcodes().getItem(i); // getItem is 1-based
			 System.out.println(" Barcode + type: " + Bc.getType() + "   Text: \n" + Bc.getText());
		 }
	 } catch (Exception ex) { // Process exceptions
		 System.out.println(); ex.printStackTrace();
	 } finally {
		 if (reader != null) try {
			 reader.getImage().Close(); // Close images and free memory
		 } catch (Exception ex) {;}
	 }
 }

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