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Hiya you lot!
I'm trying to learn C++.
I have installed and played with devc++ (including the minigw compiler).
I want to use the outp() or outport() function, but have found that it is unavailable with devc++ as it doesn't follow the ansi standard correctly.
I want to output some info to the parallel port, but have been unsuccessful so far.
Any ideas? I want to avoid inline assembler as I feel it is a bit of a 'cop out'! ;)
Can someone teach me a little of dechipering the MSDN jargon in this?
Is it possible to use this to gain access to the parallel port from a user program? Or am I delving too far into the land of driver writing?
outp and outport are not ansi. Also they are not used for the parallel port, they are used for io ports. Further, you can't use them inside windows unless you're running in kernel mode, which means writing a device driver.
For standard user-mode output you want to open "LPT1:" as a file and write to it, that'll go to the parallel port. If you need more than simple text you can use the windows GDI to print graphics and text with fonts (use of the windows GDI is beyond the scope of this reply, check MSDN).
Wow, thanks!
Can I just write hex values to lpt1: ?
I take it fstream would do the trick, do I just pretend that I'm writing to a file on the hard drive, but the file is called lpt1: rather that starting with c: ?
Yes you just open lpt1: with fstream. You can write anything you would normally write to a file or the screen with it.
e.g.
Code:std::ofstream of;
if (of.open("LPT1:"))
{
of << "Hello world!" << std::endl;
}
Can I have your children? ;) :iloveyou:
You have just saved me LOADS of research into how the hell to do this. I've been looking for ages. THANKS!!!
...if you're just starting out, learn c# instead...much nicer
This post is over 3 months old you know? :p
C# is an abombination to children of proceduaral languages :S
Get with the program...this is the 21st Century!
21st century is the age of tick wasting JIT garbage?
lol i just notice that dis post os 3 months old, in that time he probably learned c++ already
Well said sir...but the advantages are present...and things are getting better...but well said!!Quote:
Originally Posted by aidanjt
Yeah, lost ticks mean a lot in 99.9% of the apps out there running on 3GHz desktops.Quote:
Originally Posted by aidanjt
But I forgot you write time critical sensor stuff for nuclear power plants and such like. Why don't you just stick to machine code and be done with it?
After all what's the point in making things easy? Christ it means everyone might be able to do it! Ahgghh, my aura, my aura!
Use the right tool for the right job. C++ has its place, but it's a different place to that of C#. I don't think learning C# is really any more valid than C++ - better to learn both or just C++ if you can only learn one.