GZip and .Z Compress from Memory

Download Chilkat Zip ActiveX (includes objects for .zip, .gz, .bz2, and .Z)

Visual Basic example to create .Z and .gz files from the contents of a string variable.

    ' Create .gz and .Z files from in-memory data.
    
    ' First, create a big string to be compressed.
    s = ""
    For i = 0 To 100
        s = s + "Hello World!" + vbCrLf
    Next
    
    ' Create a .Z Unix compress file.
    Dim z As New UnixCompress
    z.UnlockComponent "anything for 30-day trial"
    z.CompressStringToFile s, "windows-1252", "helloWorld.txt.Z"
    
    ' Create a .gz GZip file.
    Dim gzip As New gzip
    gzip.UnlockComponent "anything for 30-day trial"
    gzip.CompressStringToFile s, "windows-1252", "helloWorld.txt.gz"
    
    ' Compress in-memory binary data to .gz and .Z files.
    Dim wordDocument As Variant
    wordDocument = gzip.ReadFile("faxCover.doc")
    
    gzip.CompressMemToFile wordDocument, "faxCover.doc.gz"
    z.CompressMemToFile wordDocument, "faxCover.doc.Z"