how to search for header files

usanet21 · n00b Joined: 20 Feb 2003 Posts: 24

hi, just wanna ask how to i search for header files in linux
What i mean is like lets say i want to know where <termios.h> is located, how do i serach for??

count · Posted: Mon Mar 24, 2003 4:50 am Post subject:

usanet21 · n00b Joined: 20 Feb 2003 Posts: 24

hi, does anyone knows how to include this junk of code into GLADE??
i just need to know how to include it together.

Listing 1 - Opening a serial port.

#include <stdio.h> /* Standard input/output definitions */
#include <string.h> /* String function definitions */
#include <unistd.h> /* UNIX standard function definitions */
#include <fcntl.h> /* File control definitions */
#include <errno.h> /* Error number definitions */
#include <termios.h> /* POSIX terminal control definitions */

/*
* 'open_port()' - Open serial port 1.
*
* Returns the file descriptor on success or -1 on error.
*/

int
open_port(void)
{
int fd; /* File descriptor for the port */

fd = open("/dev/ttyS0", O_RDWR | O_NOCTTY | O_NDELAY);
if (fd == -1)
{
/*
* Could not open the port.
*/

perror("open_port: Unable to open /dev/ttyS0 - ");
}
else
fcntl(fd, F_SETFL, 0);

return (fd);
}

count · Posted: Mon Mar 24, 2003 5:21 am Post subject:

Well, you dont actually code in Glade. It is just an interface designer.

Do you mean "does anyone know how to include this junk of code into Glade generated code?"
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- Joseph Monti
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usanet21 · n00b Joined: 20 Feb 2003 Posts: 24

yeah thats right, what i meant was how to include this junk of code into Glade generated code?

The code had no error one..i copy it from a website. what error i had now is it says:
no previous prototype for 'open_port'
'fd' undeclared

i mean i checked everything already..can someone pls help...it would begretaly appreciated

count · Posted: Mon Mar 24, 2003 2:13 pm Post subject:

You can put that function in ${projectdir}/src/support.c and place the function prototype in ${projectdir}/src/support.h. This way you will be able to use the function pretty much anywhere in your GUI.

How you want to call the function open_port() really depends on where you want to do it.

Do you want it to happen when the application starts? or Do you want it to happen whan a button is pressed?

For when the application starts put it in ${projectdir}/src/main.c

For when a button is pressed you need to add a clicked signal to the button in Glade. All signal functions are put in ${projectdir}/src/callbacks.c.

Wherever you call the open_port() function you need to make sure you see #include "support.h", which will probably bee there.

Does this help?
_________________
- Joseph Monti
_________________
This message is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation. For more info visit http://joemonti.org/