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The (C) symbol is not available in the standard ASCII character table, so in full screen DOS mode, it is not possible to display this character unless the video card's character table is remapped - PB/Vision utilizes this method to emulate a GUI interface. Alternatively, you could use a graphics mode and draw the character on the screen.
However, when a DOS window is windowed (non-fullscreen) then windows provides an "emulated" display of the DOS screen, where the font being used to display the DOS box can vary (and be changed by the user), and the actual visible results in terms of window size and displayed character set will depend on the font that is used.
In this case, any characters that appear remapped in full-screen will no longer appear to be remapped in a windowed DOS box. This is why PB/Vision GUI interfaces must run in full-screen mode.
So, not only can Windows use one of a (fairly limited) range of fonts to provide the emulated display of the text screen, some fonts may or may not include the (C) character. ALso, when the app is switched back to full-screen, the appearance will change back.
The range of fonts that Windows includes for DOS box support is limited, but some 3rd-party fonts ($) can be obtained. If your need for such a font is great then purchasing a font may be the best solution, unless you want to run full screen, in which remapping a character or two may be the best solution for you.
Remapping the keyboard keys is usually done by a keyboard driver, such as KEYB.SYS (in CONFIG.SYS) and loaded during boot-up.
I'm thinking there is some confusion here between keys and fonts. Keys
are what you press on a keyboard. Fonts are what you see on the screen.
There is no direct relationship between the two. It sounds like what
you want is not to remap the keys, but to remap the fonts, which is an
entirely different matter.
Lance's reply covered the issues involved with font twiddling quite
nicely. You may wish to read his message again.
I believe there are some examples of DOS font remapping in the Downloads
area here, if that seems like a good bet to you.
The use of "(C)" in place of the copyright symbol is fully traditional
in DOS programs and shouldn't cause you problems. Generally speaking,
the word "Copyright" itself is sufficient, anyway. Finally, if you need
a single-character "(C)" and can't find a better solution, you might
consider substituting the at sign: "@".
Egbert Zijlema, journalist and programmer (zijlema at basicguru dot eu) http://zijlema.basicguru.eu *** Opinions expressed here are not necessarily untrue ***
[/b]Tom Hanlin[/b] wrote: The use of "(C)" in place of the copyright symbol is fully traditional in DOS programs and shouldn't cause you problems. Generally speaking, the word "Copyright" itself is sufficient, anyway. Finally, if you need a single-character "(C)" and can't find a better solution, you might consider substituting the at sign: "@".
Just as an aside - while (C) may suffice for display purposes, the last time I checked it is not recognized as a "legal" copyright symbol for purposes of establishing copyright date and authorship. For that, you either have to have the C-in-a-circle symbol, or the word "Copyright" in your copyright notice.
On my Win95 PC, just starting PB/DOS 3.5 and compiling the line
Code:
CLS:FOR V = 22 TO 254: PRINT V; CHR$(V);" ";:NEXT
produces a table of chars where at position 169 there is the registered-trademark symbol (R inside a circle), and at position 184 there is the Copyright symbol (C inside a circle).
This works in pure DOS, in a windowed DOS box and in a full-screen DOS box.
If you can’ t get CHR$(184) to work, probably you have specific DOS fonts settings or similar on your PC. On my PC, with no intended DOS fonts settings nor particular PB/DOS settings, it works.
I guess, you're right, Lance!
Davide is an Italian, I'm a Dutchie. That explains why CHR$(169) is the Copyright character on my machine, while on Davide's PC it displays the Trademark.
In conclusion: when Jason wants to write international software, it is wise to use "(C)" instead.
Egbert Zijlema, journalist and programmer (zijlema at basicguru dot eu) http://zijlema.basicguru.eu *** Opinions expressed here are not necessarily untrue ***
The main problem that I have is the software were developing will be used
in the US and also in Europe. The correct code pages will be loaded there so
they will view the chars correctly, but when the data is view in the US there will be a problem.
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