C / C++ / MFC

10-May-02 5:19

We use MAKEFOURCC(c1,c2,c3,c4) to create a fourcc.

How can we get the four characters back from the FOURCC?

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Prem Kumar10-May-02 5:14

Prem Kumar

10-May-02 5:14

Use reference parameters or pointers
frisco wrote:
MAKEFOURCC(&c1,&c2,&c3,&c4)

Paul M Watt10-May-02 5:17

10-May-02 5:17

How did you know to answer frisco's question before he even asked it Smile | :)

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Zizilamoroso10-May-02 5:29

10-May-02 5:29

That's not what I mean.

FOURCC fourcc; (in fourcc there are four characters)

this gives something like this: 880175460

how can i retrieve the four characters from var fourcc?

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Paul M Watt10-May-02 5:43

Re: simple FOURCC question. [edited]

10-May-02 5:43

I guess Prem Kamur needs to refine his psycic abilities Smile | :)

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Light a man on fire, and he will be warm for the rest of his life!

Paul M Watt10-May-02 5:32

10-May-02 5:32

char *strFourCC = reinterpret_cast<char*>(&fourcc);

Then you could index the four characters. It will not be a valid null terminated string because there is no NULL, but you could still do strFourCC[0] and so on.

Build a man a fire, and he will be warm for a day
Light a man on fire, and he will be warm for the rest of his life!

Zizilamoroso10-May-02 5:56

10-May-02 5:56

I get syntax error on '('.

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Paul M Watt10-May-02 5:55

10-May-02 5:55

Sorry I forgot about the HTML formatting, here you go!

char *strFourCC = reinterpret_cast<char*>(&fourcc);

Build a man a fire, and he will be warm for a day
Light a man on fire, and he will be warm for the rest of his life!

Zizilamoroso10-May-02 6:09

10-May-02 6:09

tnx

that's it allright Smile | :)

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Regular Expression

Aaron Schaefer10-May-02 5:03

Aaron Schaefer

10-May-02 5:03

Hi,

Not sure if this is the right place to ask, but I am trying to use a regex parser to find some text in a text file. How would I write a regular expression that something like:

the word "Theodore" at the beginning of a line, followed by six lines of anything whatsoever, followed by a single lnie that I am iterested in.

I am having trobule matching part about find the next 6 lines with anything whatsoever in them

Thanks,

Aaron

Paul M Watt10-May-02 5:16

10-May-02 5:16

It all depends on the syntax of your parser. But have you tried to make a definition for a line?
I will just use pseudo-code, but it would be something like this:

(0 or more characters) + (1 newline character)

Then in your large expression you could look for your target word, then 6 lines, and search for what ever in the single line that you are interested in.

Build a man a fire, and he will be warm for a day
Light a man on fire, and he will be warm for the rest of his life!

Aaron Schaefer10-May-02 5:18

Aaron Schaefer

10-May-02 5:18

I am using the boost regular expression parser. I'm pretty new to it, I think it's basically like PERL.

How would I make a definition?

Thanks,

Aaron

Paul M Watt10-May-02 5:51

10-May-02 5:51

I am sorry I am not familiar with either of those tools. However if you simply create a string definition to pass your regular expression in the boost kit, you can just create a string and enclose it in ( ).

Then you can construct a larger string from all of the smaller strings. There may be better ways to construct expressions with your parser, if I get a chance to look at boost I may post something a little more concrete.

Good Luck!

Build a man a fire, and he will be warm for a day
Light a man on fire, and he will be warm for the rest of his life!