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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 BASWIZ
- 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,BASWIZ
-
- 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,,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 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. 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.
-
- All clear? No?! Check your QuickBASIC manual for more information!
-