(DataFlex) Compress Bytes

Demonstrates how to compress binary data.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

Use ChilkatAx-win32.pkg

Procedure Test
    Handle hoFac
    Variant hoFileBytes
    Handle hoCompress
    Variant hoCompressedBytes
    Boolean iSuccess
    String sTemp1
    Boolean bTemp1

    // This example assumes the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    Get Create (RefClass(cComCkFileAccess)) To hoFac
    If (Not(IsComObjectCreated(hoFac))) Begin
        Send CreateComObject of hoFac
    End

    Get ComReadEntireFile Of hoFac "qa_data/bmp/big.bmp" To hoFileBytes
    Get ComLastMethodSuccess Of hoFac To bTemp1
    If (bTemp1 <> True) Begin
        Get ComLastErrorText Of hoFac To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    Get Create (RefClass(cComChilkatCompression)) To hoCompress
    If (Not(IsComObjectCreated(hoCompress))) Begin
        Send CreateComObject of hoCompress
    End
    Set ComAlgorithm Of hoCompress To "deflate"

    Get ComCompressBytes Of hoCompress vFileBytes To hoCompressedBytes
    Get ComLastMethodSuccess Of hoCompress To bTemp1
    If (bTemp1 <> True) Begin
        Get ComLastErrorText Of hoCompress To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    Get ComWriteEntireFile Of hoFac "qa_output/compressedBmp.dat" vCompressedBytes To iSuccess
    Get ComLastMethodSuccess Of hoFac To bTemp1
    If (bTemp1 <> True) Begin
        Get ComLastErrorText Of hoFac To sTemp1
        Showln sTemp1
        Procedure_Return
    End



End_Procedure