Current Issues Article Archive
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Unregistered version Tag: test Tag: 218050
Socket questions
Hello !
Some questions about sockets....
I'm trying to do a program that uses sockets, and I have (as usual) some
problems ...
1. When I'm trying out my program I'm getting errors, I think this is
because I'm using the local host as the target adress for the client, and on
the local host the server program is already running, this makes it so that
the client can't bind to the socket, because the server is already bound to
it. How do I fix this ? Any way to set so a socket can be shared, or have I
totally misunderstood the whole socketsthing, don't I need to bind both of
them ?
2. My program is an console application, is there anyway that I can make it
event-driven ? Like for example when a client is trying to connect, pause
what the server is doing, handle the connect request, and then continue with
what it was doing. How could this otherwise be done ? I don't want to use a
while loop that loops infinitely...
TIA Tag: test Tag: 218049
Visual Studio Resource Editor Bugs
Help! I'm an undergraduate doing an MFC assignment using Visual
Studio 7 and the resource editor has suddenly starting doing strange
stuff. I created a number of new menu items, and the Resource.h file
now contains #define statements for them that just don't work, for
instance:
#define ID_EDIT_INCR 0
#define ID_EDIT_ADD 0
All new Menu IDs are given the value of 0 instead of 130 or whatever
they should be. Does some intelligent person out there know why this
is happening, how I can stop it from continuing, or how I can find out
what values they SHOULD be so I can manually change the values in the
Resource.h file? I can't ask my tutor because it's the weekend and I
can't continue work on my assignment until I get this fixed. I've
searched Google archives for hours and can't find anything of use.
Thanks in advance for any help that is offered.
Rowena. Tag: test Tag: 218048
Show own controls in third-party app
Hi,
in my application I start a third-party application from my program.
I want to display some controls (at least a bitmap, which is changed
to display status info, if possible a button as well).
The input focus should remain by the third-party app. My static control
should always be displayed on top.
Any idea? If there is a solution would it be possible to display a button
on top as well where both the button in his region and the third-party
app in the remaining area have input focus.
Thanks in advance,
Thomas Tag: test Tag: 218044
DLL function declaration problem
Hi There,
I have created a DLL in C++. A particular DLL function works fine when
called from a C++ program, however when trying to call the same DLL function
in VB an error is recieved 'Bad DLL Calling Convention'
The function is exported in the DLL as follows:
EXPORT void StartKeyboardHook(LRESULT (*)());
and imported in the VB application as follows:
Public Declare Sub StartKeyboardHook Lib "HooksLIB.dll" (ByVal CallBackFunc
As Long)
The function is then called in vb as follows:
Call StartKeyboardHook(AddressOf KeyPressed)
Any ideas?
Josh Tag: test Tag: 218024
Console Application
Hopefully this is the correct newsgroup.
Learning Visual C++ .Net, I wrote a simple console application in C (using
Win32 Console Application option and Empty project).
Unfortunately, I can only execute it from the IDE using Execute non-debug
(CTRl+F5) option.
If I simply choose run (F5 option), the console window just flashes by and
never remains displayed. Running the .exe file from command line yields the
same result as running it from the IDE with the F5 option namely, the
console window flashes as program is run. Anyhow, how can I create a .exe
file that can be run from a command prompt and yield the same result as
CTRL+F5 option ?
thanks;
-------------------------------------------------------------
Andrew Tag: test Tag: 218009
What does the -MT option really do?
Hi,
Is there a difference in code generation when you have -MT enabled?
If I have some libraries compiled with no -MT, and some with, what are the
possible problems I might have? If I have compiled everything with -MT, but at
the end I force to link with `libc' is this going to work?
Thanks,
Manu Tag: test Tag: 218004
Help needed on how to use CString ....
I'm starting some c++ programming again after being away from it for awhile,
and now I can't get anything to work. I'm working in Visual C++, and I want
to use CString in a simple console application. When I'm trying to do that,
I get this error : LINK : fatal error LNK1104: cannot open file
"nafxcwd.lib"
What is this file ? I don't have one on my computer, and the msdn help for
CString doesn't say anything about it, so where does the error come from ?
Something to do with the compiling ?
TIA Tag: test Tag: 218002
Join the VC++ Team at the PDC!
Hello, and greetings from the Visual C++ team at Microsoft! We would like
to invite you to join us at the Microsoft Professional Developers Conference
2003, in Los Angeles October 26th through 30th! We'll be talking about our
plans for the future of Visual C++ and about Microsoft's ongoing commitment
to C++.
The conference is nearly sold out, so don't wait to register. You can find
information about the conference at http://msdn.microsoft.com/events/pdc/.
It is another opportunity to voice your opinions directly to the people who
create the product! If you plan to attend PDC and would meet with the
Visual C++ team privately, please let me know!
April Reagan
Release Manager
Visual C++ .NET
Voice: 425-706-9811
http://msdn.microsoft.com/visualc Tag: test Tag: 217993
How to discover if an input string is unicode or ansi???
Hello,
having an application that receives input from users I'd need to be able to
discover if an input string is unicode or ansi and this since on w9x and wME
unicode is not supported (unless the Microsoft Layer for Unicode is
available on the client). Is there a way to discover if a provided input
string is unicode or ansi?
Regards,
Bob Rock Tag: test Tag: 217990
Where to put an object, Imported files
I am putting together a library of usefull functions that
I'd like to include in other projects. I have the
following "set" object that I wan't do define in this
library.
set<char> set_numeric; // declared in a .h file
set_numeric.insert('0');
set_numeric.insert('1');
...
set_numeric.insert('9');
What I've been trying to figure out is where to put the
initialization for the object. I tried putting it in
a .cpp file but there isn't an entry point to the file to
cause the object to initialize with the values.
Any pointers.
Craig Tag: test Tag: 217984
What is the counter part of CreateControl?
If an ActiveX control is created/linked dynamically via
CreateControl, what should I do to release it?
If I don't do anything, the app will exit without calling
the destructor of the control. Tag: test Tag: 217979
SysStringByteLen sometimes is 2x what it should
In my visual basic routine, I am calling a C++ dll that (at one point) has
to convert my bstr (VB string) to char. I have discovered that after a
while (???) the length of the value in the string is exactly 2x what is
should be. I am not sure what is causing this because I allocate all of
these strings thru visual basic. According to the "help" on
sysStringByteLen the value returned can be either the length of the string
or (if re-allocated) the allocated length of the string. It is not clear
what is going on. Maybe an expert here can tell me how to avoid this
problem. In the mean time I changed my code from
===from this====
b = SysStringByteLen(tdoa[i].srcvrnum2);
for(j=0;j<=b;j++) tde[i].rcvrname2[j] = tdoa[i].srcvrnum2[j];
====to this====
wchar_t wt;
b = SysStringByteLen(tdoa[i].srcvrnum2);
for(j=0;j<=b;j++){
wt = tdoa[i].srcvrnum2[j];
tde[i].rcvrname2[j] = wt;
if (wt == 0)break;
}
and this seems to fix the problem but I am not holding my breath.
When hitting "F1" on SysStringByteLen i got a mention of fstrlen but that
routine does not seem to be in the msdn index.
When i set a breakpoint after the b= i will see exactly 2x what the visual C
debugger shows. This does not occur ever time, but only if I call the dll a
2nd time or from a section of my VB code where a class was destroyed and
then allocated a 2nd or 3rd time. Is there any sure way to get the length
of the string and not get the 2x value?
BTW: the code "from this" traps in a library somewhere as the byte count of
2x goes past some boundary. If it didnt trap then the null terminating
character would have worked just fine. The problem is the program fault off
in the code that does the copy ie: "tde[i].rcvrname2[j] =
tdoa[i].srcvrnum2[j]; When debugging this problem, if I move the
instruction pointer so as to go to the next loop i can eventually stop out
and get the correct answer. It could be that when i let the test for the
loop be "j<=b" that b must be exactly on some boundary that traps. Normally
j must increment to the value of b so as to pick up the null terminating
character.
--
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======================================================================= Tag: test Tag: 217969
LoadKeyboardLayout fails
Hi,
when the System locale is Arabic-Saudi arabia and I change the keyboard
layout to Arabic(Saudi arabia) it works
// this code works (it changes to Arabic(Saudi Arabia)
if (LoadKeyboardLayout("00000401", 1)==NULL)
AfxMessageBox("FAILED");
when the System locale is Arabic-Jordan and I change the keyboard layout to
Arabic(Jordan) it DOESNT works
// this code DOEST works (it changes to Arabic(Jordan)
if (LoadKeyboardLayout("00002c01", 1)==NULL)
AfxMessageBox("FAILED");
Why is it so?
-PE Tag: test Tag: 217967
unlink
why would unlink return an error 13 for a file created by the same app,
using file_attrib_normal, opened the same way and the time of trying to
delete it, that is currently not opened? Tag: test Tag: 217963
Determine if I run under a clustered server!?
Hi,
after looking for text or examples for a while I have to admit that I didn't
found quite much, except the standard description of MSCS, but that doesn't
really help.
Do any of you have an example of how to determine if I am running under a
clustered server with vc++, something like IsTerminalServicesEnabled() with
TSE, or a hint where I could have a look at? (Where I would prefer the hint,
because I would have to do the work :) )
Would really appreciate some help.
Thanks in advance and regards from Berlin
Ian Tag: test Tag: 217961
Problems with CButton
Hi,
I have done my own class derived from CButton. What my class does is lets
the button move over the form when the button is clicked , but
WM_LBUTTONDOWN doesn't work. I have solved this problem using
PreTranslateMessage, but if I do CMyButton array[3]; I can't know the id of
the button.
Someone can help me?
Thanks, Tag: test Tag: 217957
TCHAR pointer manipulation
Hi,
Considering a UNICODE application, the pointer 'pc' shown below will be
advanced 1 byte or 1 wchar_t (2 bytes) ?
_TCHAR c;
_TCHAR* pc;
pc = &c;
pc++;
How can I manipulate byte boundaries of a wchar_t ?
------
Rafael Pivato Tag: test Tag: 217937
Exception Memory Cleanup
Hi,
The buffer will be automatically deallocated in this case:
void myfunc()
{
char* buffer;
buffer = new char[size];
throw CMyException("Testing!");
}
----
Rafael Pivato Tag: test Tag: 217936
Detect when text is selected in an Edit Control
Hi,
I would like to know when a user makes a selection in a edit control on a
dialog.
It seems that the edit control doesn't send any messages to it's parent when
user selects some or all the text in the control. I need to know when user
makes selection, because I want to enable a button only when some text is
selected (eg. Open selected URL).
Is there a known method to detect this (except a timer which checks the edit
control every second)?
Thanks,
F Tag: test Tag: 217930
Detect when text is selected in an Edit Control
Hi,
I would like to know when a user makes a selection in a edit control on a
dialog.
It seems that the edit control doesn't send any messages to it's parent when
user selects some or all the text in the control. I need to know when user
makes selection, because I want to enable a button only when some text is
selected (eg. Open selected URL).
Is there a known method to detect this (except a timer which checks the edit
control every second)?
Thanks,
F Tag: test Tag: 217929
bit fileds question
Is it legal in a class to mix bit fields and common data members?
For example
struct mixed
{
size_t fixed : 1;
size_t priority : 4;
size_t shift : 4;
size_t size : sizeof(size_t)*8 - 9;
double d;
std::string s;
};
What does the compiler do if bit fields are not contiguous? Will it use many
size_t, one for each group?
size_t fixed : 1;
size_t priority : 4;
double d;
std::string s;
size_t shift : 4;
size_t size : sizeof(size_t)*8 - 9;
--
Every idea yields an answer
-- Abercrombie Smith Tag: test Tag: 217925
Newbie question
Hi,
I have just started working in VC++. I want to know how to save a file as a
text file.
In a dialog box i'm entering a person's age and name and i want to save it
as a text file.
Please help !
Gary Tag: test Tag: 217923
DLL help
Hi,
Can anyone tell me how to use a DLL file? I've compiled a DLL file that has
class Class1;. I want to create this declare this class inside another
program's code. Below is my code for the other program.
Thanks in advance,
Tim.
#include <stdio.h>
#using "temp.dll"
int main() {
Class1 c; // Class1 : undeclared identifier
// syntax error : missing ';' before identifier 'c'
// 'c' : undeclared identifier
return 0;
} Tag: test Tag: 217921
Check that security patch
--oygchpvlk
Content-Type: multipart/related; boundary="sudklujxrkukjf";
type="multipart/alternative"
--sudklujxrkukjf
Content-Type: multipart/alternative; boundary="nyeyqkukjtrwr"
--nyeyqkukjtrwr
Content-Type: text/plain
Content-Transfer-Encoding: quoted-printable
Microsoft Customer
this is the latest version of security update, the
"October 2003, Cumulative Patch" update which resolves
all known security vulnerabilities affecting
MS Internet Explorer, MS Outlook and MS Outlook Express
as well as three newly discovered vulnerabilities.
Install now to help protect your computer
from these vulnerabilities, the most serious of which could
allow an attacker to run code on your computer.
This update includes the functionality =
of all previously released patches.
System requirements: Windows 95/98/Me/2000/NT/XP
This update applies to:
- MS Internet Explorer, version 4.01 and later
- MS Outlook, version 8.00 and later
- MS Outlook Ex