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does CFile::Read()return a CString obbject (I don't have MSDN at the moment, that's why I'm asking)
DavidCrow wrote: Just take what is between >> and <<.
How do I do that? with Right/Left functions?
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If you use a CStdioFile you can use the ReadString() function to read the line directly into a CString.
ReadString(input);
then you can do the find on your input
int endtag = input.Find(">>", 0);
Why is common sense not common?
Never argue with an idiot. They will drag you down to their level where they are an expert.
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Oh yeah and the function you want to use for getting that 12345 is the Mid() function.
Why is common sense not common?
Never argue with an idiot. They will drag you down to their level where they are an expert.
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<code>
typedef struct alcPacket
{
char workStationID[20];
char NTLogin[20];
}*alcPacket_t;
</code>
Sender :
<code>
alcPacket_t alcp;
strcpy(alcp->NTLogin,"xyz");
strcpy(alcp->workStation,"yahoo");
nRet = sendto(hSocket,(char*)alcp,sizeof(alcPacket),0,(struct sockaddr*)&stDstAddr,sizeof(stDstAddr));
</code>
Receiver :
<code>
alcPacket_t alcp;
nRet = recvfrom(hSocket,achInBuf,120,0,(struct sockaddr*)&stSrcAddr,&addr_size);
alcp = (alcPacket_t)achInBuf;
printf("%s",alcp->NTLogin);
printf("%s",alcp->workStationID);
</code>
Everthing works fine.. but i get a the output for NTLogin is preceded by a long streak of ÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌxyz
the out put looks like
ÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌxyz
Yahoo
ÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌxyz
yahoo
how can i remove that junk from NTLogin?  what's wrong?
VuNic
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Have you tried
ZeroMemory(alcp, sizeof(alcp);
and then send it?
mfg
Phil
bum... and I thought I´d got rid of all the bugs
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VuNic wrote: alcPacket_t alcp;strcpy(alcp->NTLogin,"xyz");
This looks suspicious. Try:
alcPacket_t alcp;
alcp = new alcPacket;
strcpy(alcp->NTLogin, "xyz");
"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain
"There is no death, only a change of worlds." - Native American Proverb
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sorry for late reply David, just got into this(sock) module in a round robin fashion. hmm but the problem is still there.
i have some fundamental doubt :
<code>
typedef struct alcPacket
{
char workStationID[20];
char NTLogin[20];
}*alcPacket_t;
</code>
Why the sizeof alcPaket shows 120 ?
and in the receiving end, tested the strlen for the
<code>
nRet = recvfrom(hSocket,achInBuf,120,0,(struct sockaddr*)&stSrcAddr,&addr_size);
alcp = (alcPacket_t)achInBuf;
printf("\n%s",alcp->NTLogin);
printf("\n%d",strlen(alcp->NTLogin));
printf("\n%s",alcp->workStationID);
printf("\n%d",strlen(alcp->workStationID));
</code>
It prints the values as
48 for NTLogin WRONG, with that junk characters
11 for Workstation ID.RIGHT
what could be the problem ??
VuNic
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OOOOOOOOPS, i'm really sorry David. it was a GIGO,
i made a worst mistake.. at the sending End,
i have the given the structure as
<br />
typedef struct alcPacket<br />
{<br />
char workStationID[60];<br />
char NTLogin[60];<br />
<br />
}*alcPacket_t;<br />
But while receiving, i used the strcut,
<br />
typedef struct alcPacket<br />
{<br />
char workStationID[20];<br />
char NTLogin[20];<br />
<br />
}*alcPacket_t;<br />
look at char workStationID[60];andchar workStationID[20];
the size is 60 in the former and the size is 20 with the later.
......sorry for the strain i have made to your mind  .............................
VuNic
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VuNic wrote: ......sorry for the strain i have made to your mind .............................
Mine tooo  .. Seen your mail today only... i am don't have access to internet on client site..
"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow
cheers,
Alok Gupta
VC Forum Q&A :- I/ IV
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ohh, just checked your reply alok. never mind, no problem. i wish you have a good time in pune. take care. bye
VuNic
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I just need pointing in the right direction. I've used CFileDialog successfully to open files and read the contents (NB: do I need to specifically close an ifstream, or will it be done automatically once it goes out of scope?)
I've also edited this so that a "Save as" dialog comes up. But I'm not sure what the proper way to then write to this file. I've set the PROMPTOVERWRITE flag like this
CFileDialog fileBrowser(FALSE,".csv",NULL,OFN_OVERWRITEPROMPT,"Comma Separated Value Files (*.csv)|*.csv|",NULL);
int ret = fileBrowser.DoModal();
if(IDOK == ret) then write stuff to the file
so I want to know the proper way to write data to this file, presumably using an ofstream? do i then need to set ios::trunc to make sure if they overwrite the file it erases the old contents properly?
I can probably make this work, I just wanted to make sure I wasn't being a complete muppet
tia
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ldsdbomber wrote: I want to know the proper way to write data to this file
Well, you should know, your're designing the application and the file structure. Right? 
Seriously, what do you mean by "proper"?
Just to be sure:
The CFileDialog class is simply for getting a filename and a path to a file that you either wants to read or write. The CFileDialog class does not perform any read or write operations on the file selected by the user. The OFN_OVERWRITEPROMPT flag only instructs the CFileDialog to warn the user if you opened a "SaveAs" dialog and the user selected an existing file. It has nothing to do with how the file is opened later.
BTW, you need an extra '|' at the end of your filter string.
--
Roger
It's supposed to be hard, otherwise anybody could do it!
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Hi All,
I have created a window using the Win32 api functions. Now I created a message loop inside a member function of the class like so:
{<br />
UINT uMsg = 0;<br />
<br />
while (true)<br />
{<br />
if (::PeekMessage ((LPMSG) (&uMsg), m_hWnd, 0, 0, PM_REMOVE))<br />
{<br />
::TranslateMessage((LPMSG) (&uMsg));<br />
::DispatchMessage((LPMSG) (&uMsg));<br />
}<br />
else<br />
{<br />
if (MessageQueueEmpty () == FAILURE)<br />
{<br />
return FAILURE;<br />
}<br />
}<br />
}<br />
<br />
return SUCCESS;<br />
}<br />
However after the first iteration, this becomes NULL. If I make uMsg static, it works fine.
Why??
regards,
Rich
"Programming today is a race between software engineers striving to build bigger and
better idiot-proof programs, and the Universe trying to produce bigger and better idiots.
So far the Universe is winning." -- Rich Cook
-- modified at 10:24 Thursday 2nd March, 2006
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This code has a few problems. Here’s is an edited down version of your code which shows the biggest:
UINT uMsg = 0;
::PeekMessage((LPMSG)(&uMsg), m_hWnd, 0, 0, PM_REMOVE)
The first parameter to PeekMesage is a LPMSG but your variable is of type UINT. You would get a compiler error if you tried the following code:
::PeekMessage(&uMsg, m_hWnd, 0, 0, PM_REMOVE)
You "solve" this by adding the following C-style cast:
(LPMSG)
This will never work, all you've done with this cast is say to the compiler, "Yeah I know a LPMSG isn't the same as a UINT* and you normally wouldn't compile this code but I'm the man, just blindly push ahead and compile it anyway". The problem is a UINT isn't a MSG, cast or no cast.
Here's what it should look like (edited down version):
MSG m;
::PeekMessage(&m, m_hWnd, 0, 0, PM_REMOVE)
A word of advice:
Never use C-style casts (a type in brackets). Always use function style casts instead. When you find yourself tempted to write (UINT)i write static_cast<UINT>(i) instead. If the cast doesn't make sense the compiler will complain (you can still get into trouble but the chances are a lot less). If you want to make the compiler do what you say as a C-style cast does use a reinterpret_cast. Casts are ugly (but occasionally necessary) and generally indicate a design flaw. The function style casts syntax allows you to spot casts more easily. Also C-style casts are not fine grained enough where as function style casts come in four types: dynamic_cast, static_cast, reinterpret_cast, const_cast so it is clearer and harder to abuse.
Steve
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Hi Steve,
Thanks for the answer. Very helpful even though I can't believe I didn't see it.
thanks again,
Rich
"Programming today is a race between software engineers striving to build bigger and
better idiot-proof programs, and the Universe trying to produce bigger and better idiots.
So far the Universe is winning." -- Rich Cook
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Hi,
I am using a richedit as a chat buffer.
When a new chat message is received, I use this:
chat_window_rich.SetSel(GetWindowTextLength(chat_window_rich), -1);
chat_window_rich.SetSelectionCharFormat(cf);
chat_window_rich.ReplaceSel(buff);
Where buff is the new text, and cf is the color and formatting of the new text.
However, for some reason, sometimes if a person has text highlighted and a message is received, some or all of the highlighted text will just delete. I have no idea what could be causing it.
I also have a check to see if the user is scrolled up, in which case I turn off redraw and manually set the scroll position back to where it should be. Could this also be part of the problem? People say that they see the problem more often when they are scrolled up.
Thanks!
Kelly Ryan
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Hi,
I am writing a prog that needs to store info on a specific USB dongle.
In order to do that, I need the drive letter of the dongle.
I have the vendor ID & the product ID of the dongle...
Thanks!
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Does anyone know "offhand" how I can intercept when the user clicks on a Tab (Tabcontrol) on a propertysheet (that is not in wizard mode,) or uses the keyboard to navigate between property pages on a property sheet. I would like (under certain circumstances) to disable the user from changing between property pages on the property sheet, but stll be able to do this programatically. Thanks in advance
Phil
bum... and I thought I´d got rid of all the bugs
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Oh well... solved the problem myself in the end... here is what I came up with incase anyone has a similar situation.
Override the PreTranslateMessage function in your CPropertySheet derived class...
BOOL CmyDerivedClass::PreTranslateMessage(MSG* px_msg){
if(m_bStopUserClickingonTabs &&
(px_msg->message == WM_LBUTTONDOWN || px_msg->message == WM_LBUTTONUP))
{
// Get the Tabl Control
// ********************
CTabCtrl* pTabCtrl = GetTabControl();
ASSERT(NULL != pTabCtrl && ::IsWindow(pTabCtrl->m_hWnd));
if(NULL != pTabCtrl && ::IsWindow(pTabCtrl->m_hWnd)){
CRect rect;
pTabCtrl->GetClientRect(&rect);
if(rect.PtInRect(px_msg->pt)){
return TRUE;
}
}
}
// Call the base class
// *******************
return CPropertySheet::PreTranslateMessage(px_msg);
}
This will not of course stop the user using the keybaord to switch between property pages, but this is sufficiant for my needs. If anyone has a more "elegant" method, then please, drop a line...
mfg
Phil
bum... and I thought I´d got rid of all the bugs
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Does it still use microsoft dll ??
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if you are talking about MFC, then the answer is no. But you can develop core win api applications with it.
if you are looking for a good toolkit, try QT from trolltech. it is free for developing non-commercial applications and it supports mingw as a compiler. if you are not lucky with QT, you can hava a look at wxwindows.
hope that helps you out.
walter
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hello I have a problem using mapi.
I want to send mail using the mapi functions
I use MapiLogon(NULL,NULL,NULL, MAPI_NEW_SESSION, 0, &sessionHandle); like this
then I get ready the Mesaje Mapi Structure then I use
MapiSend(0,0,Message,0,0)
and I get an error with don't send bla bla bla.
Can some one tell me what steps am I missing ?
gabby
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euacela wrote: and I get an error with don't send bla bla bla.
Can some one tell me what steps am I missing ?
Not without knowing what the exact error is, and what statement is causing it.
"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain
"There is no death, only a change of worlds." - Native American Proverb
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euacela wrote: hello I have a problem using mapi.
Hain Eucela,
AFAI remember, you have said you not going come back for your problem on this site ...? what the transformation... do u remember my word last time... we are social animals we someway and otherway need guidence or help of other people.... hope you go my point this time
"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow
cheers,
Alok Gupta
VC Forum Q&A :- I/ IV
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