June 2003 - openSUSE Programming - openSUSE Mailing Lists

error g++: stray '\240'
by Verdi March 06 Jun '03

06 Jun '03

Hi, I got an error when compiling a C++ file: Host.h:76: error: stray '\240' in program The offending line is simply: static int getTotalHost(); Any ideas? -- -- Verdi March --

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Glade and autoconf problems
by Jason Lotito 04 Jun '03

04 Jun '03

I am having problems compiling output from Glade (using the default settings, except for unselecting gettext support). Running autogen.sh provides the output below. Here are the two final lines, and the suspected errors. Commenting out these lines don't help (obviously). ./configure: line 3988: syntax error near unexpected token `PACKAGE,' ./configure: line 3988: `PKG_CHECK_MODULES(PACKAGE, $pkg_modules)' I am running SuSE 8.2 with latest installs. Any suggestions? Here's the output jason@bambam:~/Projects/cerealblog> autogen.sh **Warning**: I am going to run `configure' with no arguments. If you wish to pass any to it, please specify them on the `./autogen.sh' command line. processing . Running aclocal ... Running autoheader... WARNING: Using auxiliary files such as `acconfig.h', `config.h.bot' WARNING: and `config.h.top', to define templates for `config.h.in' WARNING: is deprecated and discouraged. WARNING: Using the third argument of `AC_DEFINE' and WARNING: `AC_DEFINE_UNQUOTED' allows to define a template without WARNING: `acconfig.h': WARNING: AC_DEFINE([NEED_MAIN], 1, WARNING: [Define if a function `main' is needed.]) WARNING: More sophisticated templates can also be produced, see the WARNING: documentation. Running automake --gnu ... configure.in: installing `./install-sh' configure.in: installing `./mkinstalldirs' configure.in: installing `./missing' Makefile.am: installing `./COPYING' Makefile.am: installing `./INSTALL' src/Makefile.am: installing `./depcomp' Running autoconf ... Running ./configure --enable-maintainer-mode ... checking for a BSD-compatible install... /usr/bin/install -c checking whether build environment is sane... yes checking for gawk... gawk checking whether make sets $(MAKE)... yes checking whether to enable maintainer-specific portions of Makefiles... yes checking for style of include used by make... GNU checking for gcc... gcc checking for C compiler default output... a.out checking whether the C compiler works... yes checking whether we are cross compiling... no checking for suffix of executables... checking for suffix of object files... o checking whether we are using the GNU C compiler... yes checking whether gcc accepts -g... yes checking for gcc option to accept ANSI C... none needed checking dependency style of gcc... gcc3 checking for strerror in -lcposix... no checking for gcc... (cached) gcc checking whether we are using the GNU C compiler... (cached) yes checking whether gcc accepts -g... (cached) yes checking for gcc option to accept ANSI C... (cached) none needed checking dependency style of gcc... (cached) gcc3 checking for gcc option to accept ANSI C... none needed checking how to run the C preprocessor... gcc -E checking for egrep... grep -E checking for ANSI C header files... yes ./configure: line 3988: syntax error near unexpected token `PACKAGE,' ./configure: line 3988: `PKG_CHECK_MODULES(PACKAGE, $pkg_modules)' -- Jason Lotito - www.phpcomplete.com

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generating X-events
by dries 03 Jun '03

03 Jun '03

Hello All, I am trying to make a program that inserts events into the X-Event queue of a certain program. What i try to do is generate an event and use XSendEvent to transmit it to the currently active window. For some reason however, the program 'xev' shows the events i am transmitting. My own program (and other programs as well !) that i am trying to test do not receive the events transmitted. Here is the code i use to transmit a ButtonPress event : memset(&event,0,sizeof(event)); x=random()%320; y=random()%240; event.type = ButtonPress; event.xbutton.serial=serial++; /* follow up nr but where do i get the current value ? */ event.xbutton.time=0; /* where do i get the time ?? */ event.xbutton.x=x; event.xbutton.y=y; event.xbutton.display=display; event.xbutton.subwindow=InputFocus; event.xbutton.window = InputFocus; /* Is this correct ?? (seems to work) */ event.xbutton.x_root=1; event.xbutton.y_root=1; event.xbutton.same_screen=True; event.xbutton.button=1; event.xbutton.state=0x0; /* what exactly is this state ??? */ printf("Generating event : mouse clicked : %d,%d\n",x,y); res = XSendEvent(display,InputFocus,True,ButtonPressMask,&event); printf("Send event res : %d\n",res); XSync(display,False); NOTE: i am trying to send the output to the window that currently has the focus using the InputFocus window !. Here is a line of output of 'xev' when the program is running and the xev window is in focus : ButtonPress event, serial 27, synthetic YES, window 0x1, root 0x0, subw 0x1, time 0, (234,123), root:(1,1), state 0x0, button 1, same_screen YES Note that the serial number of the packet is numbered up, however i don't know what the start value should be (if there is any). When i fix the serial number to 0 the behaviour of the program stays the same. There are a few other options that i don't know how to set and i don't know if they should be set, these are event.xbutton.time, event.xbutton.time, event.xbutton.state, event.xbutton.button. I don't exactly know what they are used for and i don't know if they have something to do with my problem. So, the problem is : i try to generate ButtonPress events, xev sees the events but other programs don't !. Thanx for any help Grtz Dries Pruimboom -- <End of message> -- <End of message>

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examining the heap
by John Lamb 02 Jun '03

02 Jun '03

Does anyone have suggestions for a good way to find out what (local) pointers are pointing at what items on the heap? I have a bug in a program that's almost certainly caused by two pointers pointing to the same object when they should be pointing to separate ones. Treat this as a 'newbie' question. The answer might be a debugger, but I haven't had a bug serious enough to use a debugger in four years - one of the benefits of using c++ - so I've forgotten how to use one. I usually just print variables to stdandard output. -- JDL Non enim propter gloriam, diuicias aut honores pugnamus set propter libertatem solummodo quam Nemo bonus nisi simul cum vita amittit.

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working with bits
by Raúl Gutiérrez Segalés 02 Jun '03

02 Jun '03

Hi, I am trying to do a NOT operation but it doesnt seem to work well: unsigned int i=8; printf("%d \n", ~i); This is suppose to print 247 but I get -9 Any ideas of what am I doing wrong ? BTW, I am just practicing on playing with bits.. Thanks, Raul

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is read() evil in usermode?
by Raúl Gutiérrez Segalés 02 Jun '03

02 Jun '03

Hi, I am writing, done actually, a littl app that carries on a few things that I ask it to do. There is a point where I need my app to wait till I press any key so it can keep moving. I tried with getchar, even doing fflush(stdin) first, but the app goes right throught it, it seems like something forces a bypass over getchar, so I decided to try read() and wait for 1 character. It works great.. but is it elegant and convenient to use a system call for a usermode app ? Shouldnt I use a library wrapper? What glibc function should I use to wait for a return(enter) or any other key to be pressed? This is C. Thanks, Raul

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Fwd: rdmsr and wrmsr library
by Jung Woon Ho 01 Jun '03

01 Jun '03

Hi, I'm trying to use the instructions rdmsr, wrmsr, rdpmc from the user level. However these instructions have to be run with the previlege level 0. Is there any patch available that installs simple system calls that would allow me to read and write to the msr(model specific register) from the user level? _________________________________________________________________ MSN 8 with e-mail virus protection service: 2 months FREE* http://join.msn.com/?page=features/virus

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