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hi im aswin,
i need help recording CSocket. i want to know the difference between csocket and CAsyncSocket and which is the best to use.
1) When i use CSocket if one application acts as a server and other as client if the client disconnect abruptly how do i know that.
2) How do i make sure client has received correct datat the server has sen.
3) how do i send file using CSocket which may be more then 1 MB.
4) how do i make sure that a port isnt used by any other application.
5) Consider i use create command with port 1102. but when i use getport method i see that it shows different port.
plz help me in this situation as this is my first day in a company after graduating this april.
Regards
Aswin.N.Paranji
India
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1) I have never used CSocket, but I would suggest that CAsyncSocket provides what you need here and will be easier to use - just override the OnClose function, set the AsyncSelect flags, and you will be notified when the remote client disconnects.
2) You dont need to do anything. TCP/IP ensures that the data is correct.
3) Just send it, theres nothing special you need to do because its 1MB.
4) Try and open the port. If it fails look at the error code and see if it indicates the port is in use. If you want to know beforehand then you can try and connect to the port and expect a failure - a success means the port is open.
5) I cannot see a getport function within CSocket or CAsyncSocket - what are you using to obtain the information? If you create a socket on a port then, provided its not in use, thats the port that will be used.
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sorry i use getpeername function within casyncsocket.
i would be happy if you can explain me what is blocking.
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Hi:
In ClistCtrl,I want to change the icon of some item.And I try :
m_ctrlListDevice.SetItem(nItem,0,0,NULL,1,0,0,0);
but nothing happen.The icon isn't changed. Why? How could I do to change the icon?
Thanks
Benben
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Shouldn't it be:
m_ctrlListDevice.SetItem(nItem, 0, LVIF_IMAGE, "", 1, 0, 0, 0); This assumes, of course, that m_ctrlListDevice.SetImageList() has been previously called and that at least two images exist in the list.
Five birds are sitting on a fence.
Three of them decide to fly off.
How many are left?
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Thanks.MSDN doesn't tell me this clearly.
Thanks
Benben
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hi all,
whats the major difference between a Service and a Exe
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Service is in fact an exe that is running under the Service Control Manager (SCM) context = do not need some user to start it interactivelly. It's called daemon at uni*es.
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hi Everybody
my problem regarding insert section and key name in ini file using map.i have done all this by using vector
but i want to it compatible with map.i have used two structure given belowusing vector
// st_key
// This structure stores the definition of a key. A key is a named identifier
// that is associated with a value. It may or may not have a comment. All comments
// must PRECEDE the key on the line in the config file.
typedef struct st_key
{
t_Str szKey;
t_Str szValue;
t_Str szComment;
st_key()
{
szKey = t_Str("");
szValue = t_Str("");
szComment = t_Str("");
}
} t_Key;
typedef std::vector<t_key> KeyList;
typedef KeyList::iterator KeyItor;
// st_section
// This structure stores the definition of a section. A section contains any number
// of keys (see st_keys), and may or may not have a comment. Like keys, all
// comments must precede the section.
typedef struct st_section
{
t_Str szName;
t_Str szComment;
KeyList Keys;
st_section()
{
szName = t_Str("");
szComment = t_Str("");
Keys.clear();
}
} t_Section;
typedef std::vector<t_section> SectionList;
typedef SectionList::iterator SectionItor;
/// General Purpose Utility Functions ///////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////////
void Report(e_DebugLevel DebugLevel, char *fmt, ...);
t_Str GetNextWord(t_Str& CommandLine);
int CompareNoCase(t_Str str1, t_Str str2);
void Trim(t_Str& szStr);
int WriteLn(fstream& stream, char* fmt, ...);
fefgfgfgfgfg
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Dear Friends ,
I am creating a toolband for IE and i need to change the text on the timer tick after a interval of 10 seconds.I tried doing it using
TBBUTTONINFO but it seems nothing is happening.Here is the code for that.
void CKBToolBarCtrl::OnTimer(UINT ID)
{
char str[10]="test";
LPSTR pszBuf=str;
TBBUTTONINFO tbi;
tbi.dwMask = TBIF_TEXT;
tbi.cbSize = sizeof (TBBUTTONINFO);
tbi.pszText = (unsigned short *)pszBuf;
tbi.cchText = sizeof (pokerstr);
CToolBarCtrl::SetButtonInfo(ID_BUTTON1, &tbi);
}
one more problem i am facing when i try to assign pszBuf to tbi.pszText without casting it gives me error unable to convert from char* to unsigned short* , however when i write the same code for simple MFC application everything works fine.
Any help will be heartly appreciated.
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HI,
I have a MFC DLL project.This created DLL sits in the third party exe.
One of the statement in the DLL code:
************************************************************************************
STRING str = STRING(GetModuleHandle("X.dll"), 0x409, STR_PROGRAMD);
where
// MessageId: STR_PROGRAMD
// MessageText:
// UMDC_PROGRAMD%0
#define STR_PROGRAMD ((DWORD)0x00001006L) in msgtable.h file
************************************************************************************
but the the variable str is returning "FormatMessage() failed for 100001006"
Getlasterror() returns "1813- The specified resource type cannot be found in the image file"
Pls help what could be the problem??
Thnks in advance
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At a guess, it looks like the code is trying to load a string resource from the string table of the DLL, but the string is not present. Try opening the DLL as resources in VC and check to see whether a string entry with tht ID number exists.
Roger Allen - Sonork 100.10016
If your dead and reading this, then you have no life!
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In addition to Roger's suggestion, look into the AFX_MANAGE_STATE() macro. By default, resource templates come from the main application. Since your resource is actually in the DLL, the module state needs to be changed to that of the DLL.
Five birds are sitting on a fence.
Three of them decide to fly off.
How many are left?
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Hi Mr.Alexander !
I need to writing a Dial-Up Server project in Win98 by vc++.
I wrote a program by TAPI 2.0 that it's can do :
1) wait for call .
2) answer to call .
3) send and receive data .
But problem is here that I can not set over modems(client & server ) TCP/IP protocol (I can't set IP over modems that connecte together.)
If could help, please let me know.
A BIG thanks in advance.
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Umm..
A modem usually connects to the serial port of your computer. It, by itself, does not use TCP/IP protocol, and doing that is impossible. After all, a serial port can only belong to a single computer.
So, you cannot use TCP/IP protocol over a modem connection unless you write respective software. This software would be responsible for checking if a modem connection is open (a serial connection), then it creates a virtual network interface and binds this interface to the serial connection. Now, each TCP/IP packet your computer sends is routed through the modem connection. You can consider it like a small LAN running over a phone line. The software is responsible for handling it.
I do not know if there are any software examples which are used to do dial-up networking connections. Windows already has a functioning support for this, so how about allowing it to do the job ? Just setup the computers to use dial-up networking and create a connection between the two computers. Then just use Windows Sockets to open a connection, assuming that the target computer is running a software that is listening to such connections from the "virtual network".
-Antti Keskinen
----------------------------------------------
The definition of impossible is strictly dependant
on what we think is possible.
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I know how to use the mschart ActiveX control under VC++6 but I can't figure how to use it once it is put in a dialog box. The file MsChart.h created by Visual Studio .NET appear very different that the one that was generated when using VC++6.
I have searched this site and been googling for a while, but I could not find any code sample showing how to set the data, modify the axes ...
Did anybody manage to do it?
Could someone point me to a VC++.NET sample showing how to use the MsChart?
Thank you in advance.
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HI,
I have a MFC DLL project.This created DLL sits in the third party exe.
One of the statement in the DLL code:
************************************************************************************
STRING str = STRING(GetModuleHandle("X.dll"), 0x409, STR_PROGRAMD);
where
// MessageId: STR_PROGRAMD
// MessageText:
// UMDC_PROGRAMD%0
#define STR_PROGRAMD ((DWORD)0x00001006L) in msgtable.h file
************************************************************************************
but the the variable str is returning "FormatMessage() failed for 100001006"
Pls help what could be the problem??
Thnks in advance
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Hi guys,
I have a List control in which i have to do some manipulation based on the horzontal movement of Scroll bar..The issue is for that i need the handle of the ScrollBar.But when i use GetScrollBarCtrl() I always always get NULL.So any idea.
Note:Base on the horizontal movemeent of Scrollbar i have to hide/show some columns in Listctrl
cheers,
Super
------------------------------------------
Too much of good is bad,mix some evil in it
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GetScrollBarCtrl() is a CWnd overridable which allows replacement scrollbars to be used instead of the WS_HSCROLL and the WS_VSCROLL window styles which will be in use for the list control. If you need to read the values you should be able to use the scrollbar access function directly using the SB_HORZ and SB_VERT parameters depending on whether you need the horizontal or vertical scroll bar data.
e.g.
int hPos = m_ListCtrl.GetScrollPos(SB_HORZ);
Roger Allen - Sonork 100.10016
If your dead and reading this, then you have no life!
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Hi CPians!
What is the right way for declaring a constant pointer on a constant unsigned char ?
const unsigned char table[]= ... ;
const unsigned char *ptable = table;
This is what I thought, but when I try to do something like :
typedef const struct
{
unsigned int ID;
unsigned char *IDAdr;
} IDstruct;
IDstruct table[] = { 21, table };
It brings me the error "line ## : not an adress constant" -> I understand that as my pointer not being declared as "constant", but only as a pointer on a constant... How should I do to get a constant pointer ?
Thanks a lot.
~RaGE();
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You don't have the cdecl program on your system?
$ cdecl
Type `help' or `?' for help
cdecl> declare ptable as constant pointer to constant unsigned char
const unsigned char * const ptable
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try this , this will make pointer of ur struct constant
typedef struct { unsigned int ID; unsigned char *IDAdr;} IDstruct,const LPIDstruct;
Abhishek Srivastava
Software Engg (VC++)
India ,Noida
Mobile no 9891492921 
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Thanks for your answer, unfortunately I am not allowed to modify this declaration (extern code).
~RaGE();
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To declare a constant (unchanging) pointer to a constant (unchanging) unsigned char, you would use a call like:
const unsigned char* const ptrChar = &someCharVariable;
Remember that constants must always be defined upon declaration. This means that you can do
const int iNumber = 10;
but trying a
const int iNumber;
iNumber = 10;
will fail.
In a nutshell, placing a const after the pointer type (char* const... )means that the pointer is constant, so you cannot change the address it points to after declaration. Placing a const after the pointer name (const char* ...) means that you cannot modify the memory at the address where the pointer currently points. Placing both means that you can't modify either the address pointed to, or the contents of that address.
Hope this helps.
-Antti Keskinen
----------------------------------------------
The definition of impossible is strictly dependant
on what we think is possible.
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Hi all,
I want to implement the bezier curve in my program. Can any one say about whether any direct functions available for drawing the bezier curve using GDI. I
Prakash
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