Gzip ActiveX Reference Documentation

Gzip

Current Version: 10.1.0

GZip compression component.

Object Creation

Note:
For versions of Chilkat < 10.0.0, use "Chilkat_9_5_0.Gzip" instead of "Chilkat.Gzip"
For a specific major version, use "Chilkat.Gzip.<major_version>", such as "Chilkat.Gzip.10" for Chilkat v10.*.*
See Chilkat ActiveX Object Creation

(ASP)
set obj = Server.CreateObject("Chilkat.Gzip")

(AutoIt)
$obj = ObjCreate("Chilkat.Gzip")

(Visual Basic 6.0)
Dim obj As New ChilkatGzip

(VBScript)
set obj = CreateObject("Chilkat.Gzip")

(Delphi)
obj := TChilkatGzip.Create(Self);

(FoxPro)
loObject = CreateObject('Chilkat.Gzip')

(PowerBuilder)
lole_object = create oleobject
li_rc = lole_object.ConnectToNewObject("Chilkat.Gzip")

(SQL Server)
EXEC @hr = sp_OACreate 'Chilkat.Gzip', @obj OUT

(Javascript)
var obj = new ActiveXObject("Chilkat.Gzip");

Properties

AbortCurrent
AbortCurrent As Long
Introduced in version 9.5.0.58

When set to 1, causes the currently running method to abort. Methods that always finish quickly (i.e.have no length file operations or network communications) are not affected. If no method is running, then this property is automatically reset to 0 when the next method is called. When the abort occurs, this property is reset to 0. Both synchronous and asynchronous method calls can be aborted. (A synchronous method call could be aborted by setting this property from a separate thread.)

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Comment
Comment As String

Specifies an optional comment string that can be embedded within the .gz when any Compress* method is called.

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CompressionLevel
CompressionLevel As Long
Introduced in version 9.5.0.50

The compression level to be used when compressing. The default is 6, which is the typical value used for zip utility programs when compressing data. The compression level may range from 0 (no compression) to 9 (the most compression). The benefits of trying to increase compression may not be worth the added expense in compression time. In many cases (which is data dependent), the improvement in compression is minimal while the increase in computation time is significant.

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DebugLogFilePath
DebugLogFilePath As String

If set to a file path, causes each Chilkat method or property call to automatically append it's LastErrorText to the specified log file. The information is appended such that if a hang or crash occurs, it is possible to see the context in which the problem occurred, as well as a history of all Chilkat calls up to the point of the problem. The VerboseLogging property can be set to provide more detailed information.

This property is typically used for debugging the rare cases where a Chilkat method call hangs or generates an exception that halts program execution (i.e. crashes). A hang or crash should generally never happen. The typical causes of a hang are:

  1. a timeout related property was set to 0 to explicitly indicate that an infinite timeout is desired,
  2. the hang is actually a hang within an event callback (i.e. it is a hang within the application code), or
  3. there is an internal problem (bug) in the Chilkat code that causes the hang.

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ExtraData
ExtraData As Variant

Optional extra-data that can be included within a .gz when a Compress* method is called.

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Filename
Filename As String

The filename that is embedded within the .gz during any Compress* method call. When extracting from a .gz using applications such as WinZip, this will be the filename that is created.

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HeartbeatMs
HeartbeatMs As Long

The number of milliseconds between each AbortCheck event callback. The AbortCheck callback allows an application to abort any method call prior to completion. If HeartbeatMs is 0 (the default), no AbortCheck event callbacks will fire.

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LastBinaryResult
LastBinaryResult As Variant (read-only)

The binary data returned by the last (binary data returning) method called. Only available if Chilkat.Global.KeepBinaryResult is set to 1. This provides a means for obtaining large varbinary results in the SQL Server environment (where limitations exist in getting large amounts of data returned by method calls, but where temp tables can be used for binary properties).

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LastErrorHtml
LastErrorHtml As String (read-only)

Provides information in HTML format about the last method/property called. If a method call returns a value indicating failure, or behaves unexpectedly, examine this property to get more information.

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LastErrorText
LastErrorText As String (read-only)

Provides information in plain-text format about the last method/property called. If a method call returns a value indicating failure, or behaves unexpectedly, examine this property to get more information.

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LastErrorXml
LastErrorXml As String (read-only)

Provides information in XML format about the last method/property called. If a method call returns a value indicating failure, or behaves unexpectedly, examine this property to get more information.

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LastMethodSuccess
LastMethodSuccess As Long

Indicate whether the last method call succeeded or failed. A value of 1 indicates success, a value of 0 indicates failure. This property is automatically set for method calls. It is not modified by property accesses. The property is automatically set to indicate success for the following types of method calls:

  • Any method that returns a string.
  • Any method returning a Chilkat object, binary bytes, or a date/time.
  • Any method returning a standard boolean status value where success = 1 and failure = 0.
  • Any method returning an integer where failure is defined by a return value less than zero.

Note: Methods that do not fit the above requirements will always set this property equal to 1. For example, a method that returns no value (such as a "void" in C++) will technically always succeed.

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LastModStr
LastModStr As String

The same as the LastMod property, but allows the date/time to be get/set in RFC822 string format.

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LastStringResult
LastStringResult As String (read-only)

The string return value of the last (string returning) method called. Only available if Chilkat.Global.KeepStringResult is set to 1. This provides a means for obtaining large string results in the SQL Server environment (where limitations exist in getting long strings returned by method calls, but where temp tables can be used for string properties).

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LastStringResultLen
LastStringResultLen As Long (read-only)

The length, in characters, of the string contained in the LastStringResult property.

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UseCurrentDate
UseCurrentDate As Long

If set to 1, the file produced by an Uncompress* method will use the current date/time for the last-modification date instead of the date/time found within the Gzip format.

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VerboseLogging
VerboseLogging As Long

If set to 1, then the contents of LastErrorText (or LastErrorXml, or LastErrorHtml) may contain more verbose information. The default value is 0. Verbose logging should only be used for debugging. The potentially large quantity of logged information may adversely affect peformance.

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Version
Version As String (read-only)

Version of the component/library, such as "9.5.0.94"

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Methods

CompressBd
CompressBd(binDat As ChilkatBinData) As Long
Introduced in version 9.5.0.67

In-place gzip the contents of binDat.

Returns 1 for success, 0 for failure.

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CompressBdAsync (1) (2) (AutoIt) (PowerBuilder) (VBScript) (Visual Basic 6.0) (Visual FoxPro)
CompressBdAsync(binDat As ChilkatBinData) As ChilkatTask
Introduced in version 9.5.0.67

Creates an asynchronous task to call the CompressBd method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns Nothing on failure

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CompressFile
CompressFile(inFilename As String, destPath As String) As Long

Compresses a file to create a GZip compressed file (.gz).

Returns 1 for success, 0 for failure.

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CompressFileAsync (1) (2) (AutoIt) (PowerBuilder) (VBScript) (Visual Basic 6.0) (Visual FoxPro)
CompressFileAsync(inFilename As String, destPath As String) As ChilkatTask

Creates an asynchronous task to call the CompressFile method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns Nothing on failure

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CompressFile2
CompressFile2(inFilename As String, embeddedFilename As String, destPath As String) As Long

Compresses a file to create a GZip compressed file (.gz). inFilename is the actual filename on disk. embeddedFilename is the filename to be embedded in the .gz such that when it is un-gzipped, this is the name of the file that will be created.

Returns 1 for success, 0 for failure.

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CompressFile2Async (1) (2) (AutoIt) (PowerBuilder) (VBScript) (Visual Basic 6.0) (Visual FoxPro)
CompressFile2Async(inFilename As String, embeddedFilename As String, destPath As String) As ChilkatTask

Creates an asynchronous task to call the CompressFile2 method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns Nothing on failure

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CompressFileToMem
CompressFileToMem(inFilename As String) As Variant

Gzip compresses a file to an in-memory image of a .gz file.

Note: There is a 4GB size limitation. The compressed size of the file cannot be more than 4GB. Chilkat will be working to alleviate this limitation in the future.

Returns a zero-length byte array (as a Variant) on failure.
An empty array will have a UBound of -1 meaning 0 elements.

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CompressFileToMemAsync (1) (2) (AutoIt) (PowerBuilder) (VBScript) (Visual Basic 6.0) (Visual FoxPro)
CompressFileToMemAsync(inFilename As String) As ChilkatTask

Creates an asynchronous task to call the CompressFileToMem method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns Nothing on failure

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CompressMemory
CompressMemory(inData As Variant) As Variant

Compresses in-memory data to an in-memory image of a .gz file.

Note: There is a 4GB uncompressed size limitation. The uncompressed size of the file cannot be more than 4GB. Chilkat will be working to alleviate this limitation in the future.

Returns a zero-length byte array (as a Variant) on failure.
An empty array will have a UBound of -1 meaning 0 elements.

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CompressMemoryAsync (1) (2) (AutoIt) (PowerBuilder) (VBScript) (Visual Basic 6.0) (Visual FoxPro)
CompressMemoryAsync(inData As Variant) As ChilkatTask

Creates an asynchronous task to call the CompressMemory method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns Nothing on failure

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CompressMemToFile
CompressMemToFile(inData As Variant, destPath As String) As Long

Gzip compresses and creates a .gz file from in-memory data.

Returns 1 for success, 0 for failure.

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CompressMemToFileAsync (1) (2) (AutoIt) (PowerBuilder) (VBScript) (Visual Basic 6.0) (Visual FoxPro)
CompressMemToFileAsync(inData As Variant, destPath As String) As ChilkatTask

Creates an asynchronous task to call the CompressMemToFile method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns Nothing on failure

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CompressString
CompressString(inStr As String, destCharset As String) As Variant

Gzip compresses a string and writes the output to a byte array. The string is first converted to the charset specified by destCharset. Typical charsets are "utf-8", "iso-8859-1", "shift_JIS", etc.

Returns a zero-length byte array (as a Variant) on failure.
An empty array will have a UBound of -1 meaning 0 elements.

More Information and Examples
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CompressStringAsync (1) (2) (AutoIt) (PowerBuilder) (VBScript) (Visual Basic 6.0) (Visual FoxPro)
CompressStringAsync(inStr As String, destCharset As String) As ChilkatTask

Creates an asynchronous task to call the CompressString method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns Nothing on failure

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CompressStringENC
CompressStringENC(inStr As String, charset As String, encoding As String) As String

The same as CompressString, except the binary output is returned in encoded string form according to the encoding. The encoding can be any of the following: "Base64", "modBase64", "Base32", "UU", "QP" (for quoted-printable), "URL" (for url-encoding), "Hex", "Q", "B", "url_oath", "url_rfc1738", "url_rfc2396", and "url_rfc3986".

Returns Nothing on failure

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CompressStringToFile
CompressStringToFile(inStr As String, destCharset As String, destPath As String) As Long

Gzip compresses a string and writes the output to a .gz compressed file. The string is first converted to the charset specified by destCharset. Typical charsets are "utf-8", "iso-8859-1", "shift_JIS", etc.

Returns 1 for success, 0 for failure.

More Information and Examples
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CompressStringToFileAsync (1) (2) (AutoIt) (PowerBuilder) (VBScript) (Visual Basic 6.0) (Visual FoxPro)
CompressStringToFileAsync(inStr As String, destCharset As String, destPath As String) As ChilkatTask

Creates an asynchronous task to call the CompressStringToFile method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns Nothing on failure

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Decode
Decode(encodedStr As String, encoding As String) As Variant

Decodes an encoded string and returns the original data. The encoding mode is determined by encoding. It may be "base64", "hex", "quoted-printable", or "url".

Returns a zero-length byte array (as a Variant) on failure.
An empty array will have a UBound of -1 meaning 0 elements.

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DeflateStringENC
DeflateStringENC(inString As String, charsetName As String, outputEncoding As String) As String

Provides the ability to use the zip/gzip's deflate algorithm directly to compress a string. Internal to this method, inString is first converted to the charset specified by charsetName. The data is then compressed using the deflate compression algorithm. The binary output is then encoded according to outputEncoding. Possible values for outputEncoding are "hex", "base64", "url", and "quoted-printable".

Note: The output of this method is compressed data with no Gzip file format. Use the Compress* methods to produce Gzip file format output.

Returns Nothing on failure

More Information and Examples
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Encode
Encode(byteData As Variant, encoding As String) As String

Encodes binary data to a printable string. The encoding mode is determined by encoding. It may be "base64", "hex", "quoted-printable", or "url".

Returns Nothing on failure

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ExamineFile
ExamineFile(inGzFilename As String) As Long

Determines if the inGzFilename is a Gzip formatted file. Returns 1 if it is a Gzip formatted file, otherwise returns 0.

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ExamineMemory
ExamineMemory(inGzData As Variant) As Long

Determines if the in-memory bytes (inGzData) contain a Gzip formatted file. Returns 1 if it is Gzip format, otherwise returns 0.

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GetDt
GetDt() As CkDateTime

Gets the last-modification date/time to be embedded within the .gz.

Returns Nothing on failure

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InflateStringENC
InflateStringENC(inString As String, convertFromCharset As String, inputEncoding As String) As String

This the reverse of DeflateStringENC.

The input string is first decoded according to inputEncoding. (Possible values for inputEncoding are "hex", "base64", "url", and "quoted-printable".) The compressed data is then inflated, and the result is then converted from convertFromCharset (if necessary) to return a string.

Returns Nothing on failure

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LoadTaskCaller
LoadTaskCaller(task As ChilkatTask) As Long
Introduced in version 9.5.0.80

Loads the caller of the task's async method.

Returns 1 for success, 0 for failure.

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ReadFile
ReadFile(path As String) As Variant

Reads a binary file into memory and returns the byte array. Note: This method does not parse a Gzip, it is only a convenience method for reading a binary file into memory.

Returns a zero-length byte array (as a Variant) on failure.
An empty array will have a UBound of -1 meaning 0 elements.

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SetDt
SetDt(dt As CkDateTime) As Long

Sets the last-modification date/time to be embedded within the .gz when a Compress* method is called. If not explicitly set, the current system date/time is used.

Returns 1 for success, 0 for failure.

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UncompressBd
UncompressBd(binDat As ChilkatBinData) As Long
Introduced in version 9.5.0.67

In-place ungzip the contents of binDat.

Returns 1 for success, 0 for failure.

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UncompressBdAsync (1) (2) (AutoIt) (PowerBuilder) (VBScript) (Visual Basic 6.0) (Visual FoxPro)
UncompressBdAsync(binDat As ChilkatBinData) As ChilkatTask
Introduced in version 9.5.0.67

Creates an asynchronous task to call the UncompressBd method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns Nothing on failure

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UncompressFile
UncompressFile(srcPath As String, destPath As String) As Long

Un-Gzips a .gz file. The output filename is specified by the 2nd argument and not by the filename embedded within the .gz.

Returns 1 for success, 0 for failure.

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UncompressFileAsync (1) (2) (AutoIt) (PowerBuilder) (VBScript) (Visual Basic 6.0) (Visual FoxPro)
UncompressFileAsync(srcPath As String, destPath As String) As ChilkatTask

Creates an asynchronous task to call the UncompressFile method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns Nothing on failure

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UncompressFileToMem
UncompressFileToMem(inFilename As String) As Variant

Un-Gzips a .gz file directly to memory.

Note: There is a 4GB uncompressed size limitation. The uncompressed size of the file cannot be more than 4GB. Chilkat will be working to alleviate this limitation in the future.

Returns a zero-length byte array (as a Variant) on failure.
An empty array will have a UBound of -1 meaning 0 elements.

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UncompressFileToMemAsync (1) (2) (AutoIt) (PowerBuilder) (VBScript) (Visual Basic 6.0) (Visual FoxPro)
UncompressFileToMemAsync(inFilename As String) As ChilkatTask

Creates an asynchronous task to call the UncompressFileToMem method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns Nothing on failure

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UncompressFileToString
UncompressFileToString(gzFilename As String, charset As String) As String

Uncompresses a .gz file that contains a text file. The contents of the text file are returned as a string. The character encoding of the text file is specified by charset. Typical charsets are "iso-8859-1", "utf-8", "windows-1252", "shift_JIS", "big5", etc.

Returns Nothing on failure

More Information and Examples
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UncompressFileToStringAsync (1) (2) (AutoIt) (PowerBuilder) (VBScript) (Visual Basic 6.0) (Visual FoxPro)
UncompressFileToStringAsync(gzFilename As String, charset As String) As ChilkatTask

Creates an asynchronous task to call the UncompressFileToString method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns Nothing on failure

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UncompressMemory
UncompressMemory(inData As Variant) As Variant

Un-Gzips from an in-memory image of a .gz file directly into memory.

Note: There is a 4GB uncompressed size limitation. The uncompressed size of the file cannot be more than 4GB. Chilkat will be working to alleviate this limitation in the future.

Returns a zero-length byte array (as a Variant) on failure.
An empty array will have a UBound of -1 meaning 0 elements.

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UncompressMemoryAsync (1) (2) (AutoIt) (PowerBuilder) (VBScript) (Visual Basic 6.0) (Visual FoxPro)
UncompressMemoryAsync(inData As Variant) As ChilkatTask

Creates an asynchronous task to call the UncompressMemory method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns Nothing on failure

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UncompressMemToFile
UncompressMemToFile(inData As Variant, destPath As String) As Long

Un-Gzips from an in-memory image of a .gz file to a file.

Returns 1 for success, 0 for failure.

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UncompressMemToFileAsync (1) (2) (AutoIt) (PowerBuilder) (VBScript) (Visual Basic 6.0) (Visual FoxPro)
UncompressMemToFileAsync(inData As Variant, destPath As String) As ChilkatTask

Creates an asynchronous task to call the UncompressMemToFile method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns Nothing on failure

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UncompressString
UncompressString(inData As Variant, inCharset As String) As String

The reverse of CompressString.

The bytes in inData are uncompressed, then converted from inCharset (if necessary) to return a string.

Returns Nothing on failure

More Information and Examples
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UncompressStringAsync (1) (2) (AutoIt) (PowerBuilder) (VBScript) (Visual Basic 6.0) (Visual FoxPro)
UncompressStringAsync(inData As Variant, inCharset As String) As ChilkatTask

Creates an asynchronous task to call the UncompressString method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns Nothing on failure

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UncompressStringENC
UncompressStringENC(inStr As String, charset As String, encoding As String) As String

The same as UncompressString, except the compressed data is provided in encoded string form based on the value of encoding. The encoding can be "Base64", "modBase64", "Base32", "UU", "QP" (for quoted-printable), "URL" (for url-encoding), "Hex", "Q", "B", "url_oath", "url_rfc1738", "url_rfc2396", and "url_rfc3986".

Returns Nothing on failure

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UnTarGz
UnTarGz(tgzFilename As String, destDir As String, ByVal bNoAbsolute As Long) As Long

Unpacks a .tar.gz file. The ungzip and untar occur in streaming mode. There are no temporary files and the memory footprint is constant (and small) while untarring. bNoAbsolute may be 1 or 0. A value of 1 protects from untarring to absolute paths. (For example, imagine the trouble if the tar contains files with absolute paths beginning with /Windows/system32)

Returns 1 for success, 0 for failure.

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UnTarGzAsync (1) (2) (AutoIt) (PowerBuilder) (VBScript) (Visual Basic 6.0) (Visual FoxPro)
UnTarGzAsync(tgzFilename As String, destDir As String, ByVal bNoAbsolute As Long) As ChilkatTask

Creates an asynchronous task to call the UnTarGz method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns Nothing on failure

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WriteFile
WriteFile(path As String, binaryData As Variant) As Long

A convenience method for writing a binary byte array to a file.

Returns 1 for success, 0 for failure.

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XfdlToXml
XfdlToXml(xfldData As String) As String

Converts base64-gzip .xfdl data to a decompressed XML string. The xfldData contains the base64 data. This method returns the decoded/decompressed XML string.

Returns Nothing on failure

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Events

AbortCheck
AbortCheck(abort As Long)

Provides the opportunity for a method call to be aborted. The AbortCheck event is fired periodically based on the value of the HeartbeatMs property. If HeartbeatMs is 0, then no AbortCheck events will fire. As an example, to fire 5 AbortCheck events per second, set the HeartbeatMs property equal to 200.

VB6 Event callback implementation:

Important: Event callbacks from asynchronous method calls are generally not possible from the ActiveX. See VB6 Async Callbacks

Dim WithEvents myGzip As ChilkatGzip

Private Sub myGzip_AbortCheck(abort As Long)

	'Insert application code here.

End Sub
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PercentDone
PercentDone(ByVal pctDone As Long, abort As Long)

Provides the percentage completed for any method that involves network communications or time-consuming processing (assuming it is a method where a percentage completion can be measured). This event is only fired when it is possible to know a percentage completion, and when it makes sense to express the operation as a percentage completed. The pctDone argument will have a value from 1 to 100. For operations (Chilkat method calls) that complete very quickly, the number of PercentDone callbacks will vary, but the final callback should have a value of 100. For long running operations, no more than one callback per percentage point will occur (for example: 1, 2, 3, ... 98, 99, 100).

The PercentDone callback counts as an AbortCheck event. For method calls that complete quickly such that PercentDone events fire, it may be that AbortCheck events don't fire because the opportunity to abort is already provided in the PercentDone callback. For time consuming operations, where the amount of time between PercentDone callbacks are long, AbortCheck callbacks may be used to allow for the operation to be aborted in a more responsive manner.

The abort output argument provides a means for aborting the operation. Setting it to 1 will cause the method to abort and return a failed status (or whatever return value indicates failure).

VB6 Event callback implementation:

Important: Event callbacks from asynchronous method calls are generally not possible from the ActiveX. See VB6 Async Callbacks

Dim WithEvents myGzip As ChilkatGzip

Private Sub myGzip_PercentDone(ByVal pctDone As Long, abort As Long)

	'Insert application code here.

End Sub
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ProgressInfo
ProgressInfo(ByVal name As String, ByVal value As String)

A general name/value event that provides information about what is happening during a method call. To find out what information is available, write code to handle this event and log the name/value pairs. Most are self-explanatory.

VB6 Event callback implementation:

Important: Event callbacks from asynchronous method calls are generally not possible from the ActiveX. See VB6 Async Callbacks

Dim WithEvents myGzip As ChilkatGzip

Private Sub myGzip_ProgressInfo(ByVal name As String, ByVal value As String)

	'Insert application code here.

End Sub
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