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- vxBase 1.05a March 25, 1992
- ----------------------------
-
- IMPORTANT NOTE TO EXISTING USERS:
- Function vxDeallocate HAS CHANGED and will
- require some programming changes on your part
- to implement. See the notes on vxDeallocate below.
-
-
- This release features 8 new functions:
-
- vxDbfDate extract the date of last access
- vxInit initialize multitask manager
- This function MUST be called as the
- first reference to vxBase. SEE THE
- NOTES below.
-
- vxIsRecLocked query record lock status
- vxJoinNoAuto Turn off automatic joins when browse
- window is initialized
- vxReplLogical replace logical fields using boolean values
- vxSetLanguage French, Spanish and German support added. All
- menus, dialog boxes, and error messages may be
- displayed in your choice of language.
- More languages coming!
- vxTestNtx Test the integrity of an index
- vxUseDbfRO Open a database with Read Only access
-
-
- Corrections and Changes:
- ------------------------
- (1) vxBrowsePos vertical size increased by 3 * frame width.
- (2) QuickKey clear corrected if new browse window painted.
- (3) Segment registers explicitly loaded in vxFile to stop
- intermittent enhanced mode general protection fault.
- (4) vxReplLong corrected if number was greater than 32767
- (5) vxTop() and vxBof() corrected when used with filters.
- (6) cleaner drawing of browse menus if modifications made.
- (7) F3 accelerator key attached to Find Again item in Browse menu.
- Instead of having to select the menu item to find another
- instance of a search string, press F3.
- (8) vxPack NOW PACKS MEMO FILES (and does it very well).
- (9) vxCopy now copies with index ON and does not copy deleted
- records. Memo files attached to the database being copied
- are now copied as well (and compressed).
- (10) meter bar added to indexing functions to chart your progress.
- (11) a browse window with filters now proprly handles the
- vertical scroll bar.
- (12) onscreen edit in browse of numeric fields lost numbers to the
- right of the decimal point. Problem corrected.
- (13)
-
-
-
- VXINIT and VXDEALLOCATE
- -----------------------
- To properly institute multiple tasks running vxBase, "Call vxInit" MUST
- be the first call to vxBase in your program and vxDeallocate() must be
- the last call and must be tested as shown in the example below.
-
- ' Init in first form_load
- ' -----------------------
- Sub Form_Load()
- vxInit
- vxCtlGraySet
- End Sub
-
-
- , on exit, test if unload legal
- ' with vxDeallocate
- ' -----------------------------
- Sub Form_Unload (Cancel As Integer)
-
- ' if vxDeallocate does not return
- ' TRUE, we may not exit this app
- ' -------------------------------
- If Not vxDeallocate() Then
- Cancel = -1
- VXFORM1.Show
- Else
- vxCtlGrayReset
- End
- End If
- End Sub
-
-
- Multitasking Memory Usage
- -------------------------
- vxDeallocate is now a function instead of a sub procedure. It
- must be tested as above. vxInit was added and vxDeallocate was
- changed for the following reasons:
- If running a number of vxBase tasks concurrently, the first
- task that calls vxBase has all database memory allocated to it. If
- other vxbase tasks are loaded while the first is running, these tasks
- SHARE vxbase memory with the first task.
- The new vxInit function registers the current task in a multitasking
- list maintained by vxBase. If it is the first vxBase task, that fact
- is also recorded.
- vxDeallocate as the last call before exit in your application tests
- to see if the task that owns the memory (i.e., the first task) is
- being closed. If so, and there are active vxbase tasks that were
- started AFTER the memory owning task, an error message is issued to
- the user that the task closure sequence is incorrect. The programmer
- must NOT exit the first application until all other tasks subordinate to
- the first have been closed. In other words, the first vxBase application
- to be run must be the last to be closed.
- Use a sequence of code as shown in the example above in your VB
- application exit routine (i.e., the last form_unload) to ensure that
- the task closure sequence is correct (otherwise - U.A.E.!)
-
-
- vxSetLanguage
- -------------
- This release adds French, Spanish, and German language support. If
-
- vxSetLanguage(VX_FRENCH) or
- vxSetLanguage(VX_GERMAN) or
- vxSetLanguage(VX_SPANISH)
-
- is called. all browse and memo menus, dialog boxes, and error messages
- generated by vxBase will be in the language of choice. Subsequent startups
- of vxBase will also be in the last selected langauge whether vxSetLanguage
- is called or not. To set the language back to English, use
-
- vxSetLanguage(VX_ENGLISH)
-
-
- The 1.05 documumentation only mentions VX_FRENCH. VX_GERMAN and VX_SPANISH
- were added to release 1.05a.
-
- vxBase Installation
- -------------------
- vxBase is distributed on a single diskette or on bulletin boards
- as two compressed .ZIP files. The first ZIP file is vxbdoc.zip, which
- contains the documentation in a Windows Write file. This file is
- essential to understanding and using vxBase. If it is missing, contact
- the author at the address below. The documentation is separated from
- the rest of vxBase to allow potential users to preview it before
- installing and actually using vxBase. This is especially helpful to
- potential users who extract vxBase from a bulletin board. They can
- evaluate the system from a documentation standpoint before committing to
- downloading the larger system.
-
- Unzip vxbdoc.zip and view or print it. The manual is more than
- 180 pages long. It was formatted for an Epson 24-pin printer using standard
- Roman and Courier fonts. Printed manuals may be obtained for $15.00.
- See the end of the documentation for ordering information.
-
- The second ZIP file (vxbase.zip) contains the sample source code
- and Visual Basic project files, vxbase.txt which includes all of the Visual
- Basic declarations for the routines in the vxBase DLL and the vxBase DLL
- itself.
-
- If you are going to upload vxBase to a bulletin board, it must be
- sent as it was received - in two ZIP files.
-
- When the system ZIP file is decompressed, it contains this readme.doc
- file and 2 more ZIP files. These ZIP files are:
-
- vxbdll.zip the vxBase DLL
- vxbtest.zip sample source code and vxbase.txt
-
- To install vxBase, first make a subdirectory under your \vb
- directory named \vb\vxbtest and copy the vxbtest.zip file there. Unzip it
- and delete the vxbtest.zip file from your hard disk. To run the sample
- application it is essential that these files be in directory \vb\vxbtest
- because this path is hard-coded into the sample code. If you MUST put it
- somewhere else, you'll have to modify the file names in the source code to
- reflect your location.
-
- Unzip vxbdll.zip and place the resulting file (VXBASE.DLL) in your
- \windows directory.
-
- To run the sample program, see the Sample Application section in the
- manual.
-
- Terry Orletsky
- vxBase (512523 ALberta Ltd)
- #200, 10310 - 176 Street
- Edmonton, Alberta, Canada
- T5S 1L3
- Phone (403) 489-5994
- Fax (403) 486-4335
- Compuserve I.D. 70524,3723
-
-