You can find the DLL API Sample Application for C++Builder in:

SAMPLES\C++Builder 4-5\DLL API

SAMPLES\C++builder 6\DLL API

This sample application provides you with a visual application that lets you perform basic zipping and unzipping. It shows you how to run DLL API methods, set properties, and write event handlers using the "windows messages" technique (as opposed to using "callback functions").

The methods demonstrated are: XceedZipInitDLL, XceedZipShutdownDLL, XzCreateXceedZipA, XzDestroyXceedZip, XzSetXceedZipWindow, xzZip (Zip method), xzUnzip (Unzip method) and XzGetErrorDescription (GetErrorDescription method).

Various property setting functions such as XzSetZipFilename (sets the ZipFilename property) are demonstrated, as well as the FileStatus, GlobalStatus, SkippingFile and Warning events.

To use the sample, load the CompressApp.bpr project file, then build and run the program.