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I have been putting it off for a month now because i couldnt find a real good place to start studying for this. So i figured I would ask you all here if you recommend some nice places or books to read to work with Internet programming using Windows Sockets or (if you think it is better) any other socket programming.
obviously if at all possible I'd like to study Windows sockets 2, but 1.1 is ok I guess. Remember before you say go read MSDN I am really new to Internet/Network Programming, so something that will guide me is truly the most helpful.
Thanks
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CNewbie wrote: Remember before you say go read MSDN I am really new to Internet/Network Programming, so something that will guide me is truly the most helpful.
What does being new have to do with (not) reading MSDN? In addition to that, I would suggest Googling for specific topics, and perusing this section of CP.
"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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Learn winsock programming via books. I highly recommend Network Programming for Microsoft Windows Second Edition by Anthony Jones and Jim Ohmund.
Check out my website for software development links.
http://www.dslextreme.com/users/kuphryn/links.html[^]
Kuphryn
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Thanks Waldermort for your contribution. I wish to capture keys from the keyboard using system-wide windows hooks. I'm not using MFC but Visual Studio's WIN32 Application and DLL. I don't know how to capture keys such as * . + @ # % & etc. How can I do this?
I'm using the following:
if (((keyvalue>=0x41) && (keyvalue<=0x5A)) || (key==VK_SPACE))
to capture keys a..z and the spc key.
Thanks
Ev Scott
EvScott
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you would have to trap and test the value of your WM_CHAR message. You would normally do this in your message loop and send the chars to your winproc.
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Sorry, but how would I do this?
EvScott
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Who can i Know that my Application Supports Doc/View Architecture? using which function call ?
Pls help me Sir
Fly Like An Eagle With MIGHTY POWER.
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if you have the source code, just look at it, otherwise, I'm not certain from an external point of view that it possible ?
Maximilien Lincourt
Your Head A Splode - Strong Bad
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I am working on some project and can't overcome some errors. I can't understand how typecast is done in C++/C. What if we convert smaller type to bigger - how is it done? And bigger to smaller? Do we just truncate the data to biggest one or... what?
I would be grateful if you could explain that to me.
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Netvisdom wrote: What if we convert smaller type to bigger
No problem. In fact, some types are automatically promoted.
Netvisdom wrote: how is it done?
char c;
int n = c; Netvisdom wrote: And bigger to smaller?
There is potential loss of data.
"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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Thanks, but I ment what there would be if we convert, for example, int to char - truncated or maximum number? And what about other convertion cases?
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Netvisdom wrote: ...but I ment what there would be if we convert, for example, int to char...
There would be loss of data if the int value was 128 or greater.
Netvisdom wrote: And what about other convertion cases?
Such as?
"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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I think he is asking, if you cast an int down to a char, does the char take on the value of the least significant byte of the original int, or does the char take on the value of the highest value that a char can hold.
For instance, if the int held the value 50, then it's clear that the char would take on the value 50, but if the int held the value 356, would the char take on the value 128 since 128 is the highest number a char can hold?
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Troposphere wrote: ...but if the int held the value 356, would the char take on the value 128 since 128 is the highest number a char can hold?
No, it would "wrap" all the way back around to (positive) 100. The leftmost 16 bits would go away. A better example would be if the int value was something like 200. The resulting char value would be -56. The leftmost 16 bits still go away, but now the sign bit is 1, indicating a negative.
"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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 I am not able to read & write to serial port in WINDOWS CE using embedded visual c++. i am including the code i have tried.it showing no.of bytes written as 1 but while reading it is showing as no.of bytes read as 0.
//writing
DWORD dwError,dwNumBytesWritten;
int rc;
HANDLE hPort;
BYTE B;
TCHAR* pFileName = TEXT("COM1:");
B='a';
hPort =CreateFile(pFileName,GENERIC_READ| GENERIC_WRITE,0,NULL,OPEN_EXISTING,0,NULL);
rc=WriteFile (hPort,&B,1,&dwNumBytesWritten,NULL);
CloseHandle (hPort);
//reading
DWORD dwError,dwNumBytesRead;
int rc;
HANDLE hPort;
BYTE B;
TCHAR* pFileName = TEXT("COM2:");
hPort =CreateFile(pFileName,GENERIC_READ| GENERIC_WRITE,0,NULL,OPEN_EXISTING,0,NULL);
rc=ReadFile (hPort,&B,1,&dwNumBytesRead,NULL);
MessageBox(NULL,TEXT(""+B),NULL,MB_OK);
CloseHandle (hPort);
can anyone please halp me
Thanks for your reply in advance.
Neha
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I'm looking for a quick template or sample code to write a quick "installer" type program in (not managed) C++ to install items to the PROGRAMS folder that simply are links to a website.
For example, START / ALL PROGRAMS / MY FOLDER / Link 1, Link 2, etc.
Does anyone have anything like this?
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See here and here.
"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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A link to CodeGuru?!! Blasphemy!!
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I'm using toolbars in a couple dialogs (actually property pages). I can get them transparent by setting that in OnErase in the derived CToolbar class, but I always get a border on the top.
I've played around with the flags to try and get rid of that top border, no luck, and I think I've forgotten everything I've tried at this point - brain fry  Here's the code that creates the toolbar:
m_Toolbar.CreateEx(this, TBSTYLE_FLAT | TBSTYLE_TRANSPARENT, WS_CHILD | WS_VISIBLE | CBRS_TOP | CBRS_TOOLTIPS | CBRS_FLYBY | CBRS_SIZE_FIXED);
Any ideas how to get rid of that top line/border?
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Hi, me again...
a few days a go I posted a problem with showing tooltips in a modeless dialog in a dll. I got a hint which seems to solve the problem.
I have done several tests in the meantime and unfortunatelly there is still a small problem with the tooltip.
To setup the tooltips for the modeless dialog in my dll I use this function:
//////////////////////////////////////////
void CMyDialog::SetToolTip(CWnd* pWnd, LPCTSTR lpszText)
{
if((pWnd != NULL) && (m_pTip != NULL)){
TOOLINFO ti;
ti.cbSize = sizeof(TOOLINFO);
ti.lpszText = (LPTSTR)lpszText;
ti.hinst = AfxGetInstanceHandle();
ti.hwnd = pWnd->m_hWnd;
ti.uFlags = TTF_SUBCLASS | TTF_IDISHWND;
ti.uId = (UINT)pWnd->m_hWnd;
m_pTip->SendMessage(TTM_ADDTOOL, 0, (LPARAM)&ti);
}
}
//////////////////////////////////////////
THe tooltip is shown and this works without (!) any call to CMyDialog::PreTranslateMessage(MSG* pMsg) and RelayEvent. But I need this call, because there is an MFC bug with tooltips for disabled controls and I used in my other modal dialogs this code:
//////////////////////////////////////////
BOOL CMyDialog::PreTranslateMessage(MSG* pMsg)
{
TRACE("PreTranslateMessage\n");
if(m_pTip != NULL){
// The following code is a workaround for a MFC tooltip bug which
// prevents the popup of a tooltip for a disabled control in a modal dialog.
// Transate the message based on TTM_WINDOWFROMPOINT
MSG msg = *pMsg;
msg.hwnd = (HWND)m_pTip->SendMessage(TTM_WINDOWFROMPOINT, 0, (LPARAM)&msg.pt);
CPoint pt = pMsg->pt;
if((msg.message >= WM_MOUSEFIRST) && (msg.message <= WM_MOUSELAST))
::ScreenToClient(msg.hwnd, &pt);
msg.lParam = MAKELONG(pt.x, pt.y);
// Let the ToolTip process this message.
m_pTip->RelayEvent(&msg);
} // if
return CDialog::PreTranslateMessage(pMsg);
}
//////////////////////////////////////////
Then I tried to use the message hook which was neccessary to use accellerators in CMyDialog to call PreTranslateMessage:
//////////////////////////////////////////
// Hook procedure for WH_GETMESSAGE hook type.
LRESULT CALLBACK GetMessageProc(int nCode, WPARAM wParam, LPARAM lParam)
// If this is a keystrokes message, translate it in controls'
// PreTranslateMessage().
LPMSG lpMsg = (LPMSG)lParam;
if((nCode >= 0) &&
(PM_REMOVE == wParam) &&
(lpMsg->message >= WM_KEYFIRST && lpMsg->message <= WM_KEYLAST) &&
(AfxGetApp()->PreTranslateMessage((LPMSG)lParam)) == TRUE){
// The value returned from this hookproc is ignored, and it cannot
// be used to tell Windows the message has been handled. To avoid
// further processing, convert the message to WM_NULL before
// returning.
lpMsg->message = WM_NULL;
lpMsg->lParam = 0L;
lpMsg->wParam = 0;
}
// Process WM_MOUSE messages for tooltips here ????
if((nCode >= 0) &&
(PM_REMOVE == wParam) &&
(lpMsg->message >= WM_MOUSEFIRST && lpMsg->message <= WM_MOUSELAST) &&
(AfxGetApp()->PreTranslateMessage((LPMSG)lParam)) == TRUE){
// Do nothing ???
}
// Passes the hook information to the next hook procedure in
// the current hook chain.
return ::CallNextHookEx(g_hHook, nCode, wParam, lParam);
}
//////////////////////////////////////////
When I use the above code the tooltips for disabled controls work, but something with the mousemessage handling is wrong, because CCombobox controls can't be opened (They open very short and automatically close again).
Does anyone know how to solve my problem?? I think somehow I must call RelayEvent of the tooltip.
THX
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Is it safe to say that every user-mode process is a child of either the Services Controller (services.exe) or the Shell (explorer.exe) ??
Does the User32::ShellExecute function ultimately resolve to a call to CreateProcess, or does ShellExecute ultimately create the given process with calls to native functions??
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I have an edit box on my property page that I want to check to make sure the user is putting the proper data in. In order to do this I use OnKillFocus() and set the focus back to edit box which has a problem. This works fine.
My problem is that when I switch to a different page on my property sheet, it does not keep the previous page up front. I still get the message box that I throw for errors, but the page still becomes inactive. I tried to use a ShowWindow(SW_SHOWNORMAL) but it looks like the new tab is still selected even though it show the contents of the previous tab.
Thanks in advance!
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In the OnKillActive() method, what value are you returning?
"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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