Events triggered by the XceedZip object are communicated either by callback or by a window message. In both cases, an event index number is provided, along with a data structure containing the event's parameters. The event index number is a unique number that lets you identify which event occurred and what parameters are contained in the provided data structure.

Events that have strings in their parameters are available in both ANSI and Wide-character versions. If you got your handle to an XceedZip with the ANSI version of XzCreateXceedZip, then all reported strings will be ANSI strings (char *). But if you called the UNICODE version of XzCreateXceedZip, then all reported strings are UNICODE strings (WCHAR *).

In each event topic, you will see the generic parameter structure, using the TCHAR data type, which is mapped to char or WCHAR, depending on your compiler settings.

Below is a table of event indexes, and the available defines in XceedZipAPI.h: 

XM_MOVINGTEMPFILE (25)	MovingTempFile
Index	Event Name	Parameter Structure
XM_LISTINGFILE (1)	ListingFile	xcdListingFileParams
XM_PREVIEWINGFILE (2)	PreviewingFile	xcdPreviewingFileParams
XM_INSERTDISK (3)	InsertDisk	xcdInsertDiskParams
XM_ZIPPREPROCESSINGFILE (4)	ZipPreprocessingFile	xcdZipPreprocessingFileParams
XM_UNZIPPREPROCESSINGFILE (5)	UnzipPreprocessingFile	xcdUnzipPreprocessingFileParams
XM_SKIPPINGFILE (6)	SkippingFile	xcdSkippingFileParams
XM_REMOVINGFILE (7)	RemovingFile	xcdRemovingFileParams
XM_TESTINGFILE (8)	TestingFile	xcdTestingFileParams
XM_FILESTATUS (9)	FileStatus	xcdFileStatusParams
XM_GLOBALSTATUS (10)	GlobalStatus	xcdGlobalStatusParams
XM_DISKNOTEMPTY (11)	DiskNotEmpty	xcdDiskNotEmptyParams
XM_PROCESSCOMPLETED (12)	ProcessCompleted	xcdProcessCompletedParams
XM_ZIPCOMMENT (13)	ZipComment	xcdZipCommentParams
XM_QUERYMEMORYFILE (14)	QueryMemoryFile	xcdQueryMemoryFileParams
XM_ZIPPINGMEMORYFILE (15)	ZippingMemoryFile	xcdZippingMemoryFileParams
XM_UNZIPPINGMEMORYFILE (16)	UnzippingMemoryFile	xcdUnzippingMemoryFileParams
XM_WARNING (17)	Warning	xcdWarningParams
XM_INVALIDPASSWORD (18)	InvalidPassword	xcdInvalidPasswordParams
XM_REPLACINGFILE (19)	ReplacingFile	xcdReplacingFileParams
XM_ZIPCONTENTSSTATUS (20)	ZipContentStatus	xcdZipContentsStatusParams
XM_DELETINGFILE (21)	DeletingFile	xcdDeletingFileParams
XM_CONVERTPREPROCESSINGFILE (22)	ConvertPreprocessingFile	xcdConvertPreprocessingFileParams
XM_WRITINGZIPCONTENTSSTATUS (23)	WritingZipContentsStatus	xcdWritingZipContentsStatusParams
XM_MOVINGTEMPFILESTATUS (24)	MovingTempFileStatus	xcdMovingTempFileStatusParams
XM_MOVINGTEMPFILE (25)	MovingTempFile	xcdMovingTempFileParams