Topwiz Software - Zlibwapi


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All examples include a PB8 and PB10 version. If you are using PB9, you can migrate the PB8 library.

An installer can be downloaded here which will install all of the examples.

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Zlibwapi

This program contains an object which encapsulates functions of the free ZLIB library. It includes in-memory compression / decompression, creating .zip archive files and extracting files from .zip archive files. It also supports password protected zip files.

This can be used to save space when saving files in the database or reduce network traffic between a PB client and a Jaguar component. It also uses the Win API GetOpenFileName function with multi-select. PB10 has this capability built into it's GetFileOpenName function but is limited in that it does not show the Places bar.

Click here to download the PowerBuilder sample: ZLIBWAPI.ZIP

The freecode library zlibwapi.dll is included.

Win API Functions used:

CloseHandle
CreateFile
FileTimeToLocalFileTime
FileTimeToSystemTime
FindClose
FindFirstFile
FindMimeFromData
FindNextFile
FormatMessage
GetLastError
GetOpenFileName
ReadFile
RtlMoveMemory
SHGetFileInfo
WriteFile

Zlib API Functions used:

compress
compress2
crc32
uncompress
unzClose
unzCloseCurrentFile
unzGetCurrentFileInfo
unzGetGlobalComment
unzGoToFirstFile
unzGoToNextFile
unzLocateFile
unzOpen
unzOpenCurrentFile
unzOpenCurrentFilePassword
unzReadCurrentFile
zipClose
zipCloseFileInZip
zipOpen
zipOpenNewFileInZip
zipOpenNewFileInZip3
zipWriteInFileInZip
zlibVersion

——— Last updated 01/23/2012 ———