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- So you've never used a library before and you want to know what
- gives?
-
- A library is a collection of routines, whether written in
- BASIC, assembly language, or some other language altogether.
- It provides a convenient way to allow different programs to use
- the same sets of standard or special-purpose routines
- (subprograms or functions, in BASIC parlance).
-
- There are two forms of libraries for QuickBASIC. The form with
- the extension ".LIB" is for use with LINK, for creating
- stand-alone programs which do not require the QuickBASIC
- environment. This sort of library can be made or manipulated
- using the LIB utility provided with QuickBASIC. The form of
- library with the extension ".QLB" is for use in the QuickBASIC
- environment. It is created with LINK and (unfortunately) can't
- be manipulated at all.
-
- To use a QLB library, you specify the /L parameter when
- starting up QB:
-
- QB /L PBCLONE
-
- You can optionally include the name of your program before the
- /L switch.
-
- To use a LIB library, you specify the name of the library when
- you LINK your program. Either let LINK prompt you for the
- library or type something like this:
-
- BC program/O; (or whatever)
- LINK program/EX,,NUL,PBCLONE
-
- If you are in the QuickBASIC environment and direct the
- compiler to produce an .EXE file, it will automatically link
- the library for you if you started up QB with the /L option.
-
- Suppose you have more than one library that you wish to use?
- Well, provided that you have both of the libraries in .LIB
- form, this presents no problem. To create a combined .LIB
- library, use the LIB utility to extract all of the .OBJ files
- from one .LIB and add them to the other one. You can convert
- the new combined library to .QLB form by using a special LINK
- syntax:
-
- LINK combined.LIB/Q/SE:1024,,NUL,BQLB45;
-
- The last two digits of "BQLBxx" represent the version of the
- compiler that you have. It doesn't necessarily match the
- formal version number, though, so you might just want to use
- DIR and see what the name of the file really is. BQLBxx.LIB is
- one of the files that comes with QuickBASIC. If you have QBX,
- use QBXQLB instead of BQLBxx.
-
- The "/SE:1024" part is only needed when dealing with large
- libraries, such as PBClone. It tells LINK to allocate more
- space for its internal tables. This doesn't affect the size of
- the resulting library, though, so it never hurts to use this
- parameter.
-
- If you experience a LINK error, make sure that you're using the
- current version of LINK. I've heard from many people who turn
- out to have the wrong version of LINK in their PATH
- somewhere... when LINK starts up, it will display its version
- number on the screen. The version should be around 3.69 as of
- QuickBASIC 4.5, or 5.05 for QBX. You must use the LINK that
- came with QuickBASIC-- the one that comes with Quick C is
- incompatible and the one that came with BASCOM 6.0 (the one
- with two periods in the version number) has a few bugs.
-
- If you are using BASCOM 7.0, DO NOT interrupt LINK with a Break
- or Control-C, as this may cause it to damage your hard disk!!!
- This bug is known to appear in the LINK that comes with BASCOM
- 7.0. I'm not sure whether they fixed it in BASCOM 7.1. You
- may be more familiar with BASCOM 7.x as "PDS" or "The
- Professional Development System" (Marketing, ugh).
-
- All clear? No?! Check your BASIC manuals for more information!
-