Re: LoadLibrary(cygx11-6.dll) results in STATUS_ACCESS_VIOLATION

[Alexander Gottwald]

On Sun, 24 Oct 2004, Samer El Boustany wrote:

 note that I am using MSVC 6

I think this is the problem. You can not mix cygwin and msvc program
parts.

bye
ago
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Re: LoadLibrary(cygx11-6.dll) results in STATUS_ACCESS_VIOLATION

[Samer El Boustany]

here's my piece of code:
int main(int argc,char **argv)
{
 HINSTANCE hInst = LoadLibrary(cygwin1.dll);
 void *(*pfdlOpen)(char *,int) = (void *(*)(char
*,int))GetProcAddress(hInst,dlopen);
 int   (*pfdlClose)(void *) =
(int(*)(void*))GetProcAddress(hInst,dlclose);
 void *(*pfdlSym)(void *,const char *) = (void *(*)(void *,const char
*))GetProcAddress(hInst,dlsym);

 void * hXInst = pfdlOpen(cygwin1.dll,RTLD_LAZY);

 if (hInst)
 {
  Display *(*pfXOpenDisplay)(char *) = NULL;

  pfXOpenDisplay = (Display *(*)(char *))pfdlSym(hXInst,XOpenDisplay);
  if(pfXOpenDisplay)
  {
   Display *pxDisplay = NULL;

   pxDisplay = pfXOpenDisplay(127.0.0.1:0.0);
   if(pxDisplay)
   {
   }
   else
   {
printf(Could not connect to X Server);
   }
  }
  pfdlClose(hXInst);
 }
}

note that I am using MSVC 6

thanks
samer
- Original Message -
From: Samer El Boustany [EMAIL PROTECTED]
To: Samer El Boustany [EMAIL PROTECTED]; [EMAIL PROTECTED]
Sent: Sunday, October 24, 2004 11:35 PM
Subject: Re: LoadLibrary(cygx11-6.dll) results in STATUS_ACCESS_VIOLATION


 Thank you for your replies.
 I tried the dlopen and it gets into an inifinite loop. Any idea why?

 thanks
 samer

 Charles Wilson wrote:
 LoadLibrary usually works okay --- but it'd certainly be better, from a
 cygwin POV, to use cygwin1.dll's dlopen() instead. And there is sometimes
a
 good reason to avoid direct linking: what if you want to turn on various
 windowing/GUI modes...e.g. rxvt on cygwin can currently be used without an
 Xserver running, without even having the X libs installed. If $DISPLAY is
 :0, it never tries to load the X stuff, but simply uses Windows GDI. If
the
 Xlibs were linked directly into the app, you'd always have to have the
Xlibs
 installed, even if you didn't want to ever use rxvt in X11 mode.

 - Original Message -
 From: Samer El Boustany [EMAIL PROTECTED]
 To: [EMAIL PROTECTED]
 Sent: Sunday, October 24, 2004 7:49 PM
 Subject: LoadLibrary(cygx11-6.dll) results in STATUS_ACCESS_VIOLATION


  Hi,
  I am trying to write an x client application that will run on a windows
xp
  machine. When I try to load any X related dll (in order to be able to
call
  for example XOpenDisplay) the executable exits whith the message
  5 [main] test3 2820 handle_exceptions: Exception:
STATUS_ACCESS_VIOLATION
  648 [main] test3 2820 open_stackdumpfile: Dumping stack trace to
  test3.exe.tackdump
 
  This dump occurs when the system tries to load the library.
 
  Any help would be appreciated.
 
  thanks
  samer