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wbgxx wrote: I know atol()is libiary but if I use like this it also has a problem,why?
Sentences like this are rising to the top of the list of most useless statements. If your program does not work in some way, saying "it has a problem", gives us no information to guess what may be wrong. Please try and explain what happens; do you get a compiler error, does it cause an exception, does it return the wrong result, etc?
However, having looked at the code again I see:
NewNode->lNum = stuList[i].atol(stuList[i].lNum);
OK, so let's correct it
NewNode->lNum = atol(stuList[i].lNum);
The atol() function takes a string of digits as input and returns its value as a long variable. Your statement is trying to pass a long as its input parameter which a) is wrong, and b) makes no sense; the value is already a long.
The other problem with Createlist（） is that it returns the pointer to the last structure in your list rather than the first; you need to keep a copy of the first entry added to the head pointer.
MVP 2010 - are they mad?
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Oh!Yes,I see!
very grateful for you !
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(2) Simple - if atol is a library function then use it as such!! 
declare your struct like this:
typedef struct List
{
long lNum;
char cpsName[30];
long lCScore;
long lMathScore;
struct List *next;
}Stu;
And use the function like this:
NewNode->lCScore = stuList[i].atol(stuList[i].lCScore);
NewNode->lCScore = atol(stuList[i].lCScore);
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enhzflep wrote: NewNode->lCScore = atol(stuList[i].lCScore);
Except that stuList[i].lCScore is already a long; as I pointed out in my previous message.
MVP 2010 - are they mad?
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Yes indeed. 
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Wish I had a £1 for every time I've done something similar 
MVP 2010 - are they mad?
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Hello everyone,
I am extremly new to vc++ 6.0 programming and i need to create a drag drop control that would draw an image or say a shape into my window.Can you people please tell me how should i start and where to start from.Name of class or may be library should help.
Thank you in advance.
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hi ,I'm a freshman ,and newer to study c !this is my program!
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define STOP 0
#define TRUE 1
#define OK 1
#define FILE_NAME ("my.text")
typedef struct List
{
long lNum;
char cpsName[30];
long lCScore;
long lMathScore;
long atol(long i);
struct List *next;
}Stu;
Stu stuList[3] =
{
{1, "asd", 32, 44, 0},
{2, "ffg", 66, 66, 0},
{3, "dgd", 55, 44, 0},
};
Stu *CreateList()
{
Stu *head = NULL;
Stu *NewNode = NULL;
int i = 0;
for (i=0; i<3; i++)
{
NewNode = (Stu*)malloc(sizeof(Stu));
NewNode->lNum = stuList[i].atol(stuList[i].lNum);
strncpy(NewNode->cpsName, stuList[i].cpsName, 30);
NewNode->lCScore = stuList[i].atol(stuList[i].lCScore);
NewNode->lMathScore = stuList[i].atol(stuList[i].lMathScore);
NewNode->next = NULL;
if (NULL == head)
{
head = NewNode;
}
else
{
head->next = NewNode;
head = NewNode;
}
}
return head;
}
int SaveToFiles(Stu *head)
{
Stu *p = head;
FILE *fp;
char cFileName[1024] = {0};
//strcpy(cFileName, FILE_NAME);
if ((fp = fopen(FILE_NAME, "wb")) == NULL)
{
printf( "Open file error!\n" );
exit (1);
}
while (p != NULL)
{
if (fwrite(p, sizeof(Stu), 1, fp) == 1)
{
p = p->next;
}
else
{
printf("Write file error!\n");
exit(1);
}
}
//fputs(p, cFileName);
fclose(fp);
printf( "Save file succeed!\n" );
return OK;
}
int OpenFiles()
{
char cFileName[256] = {0};
FILE *fp;
if (0 == (fp = fopen(FILE_NAME, "r")))
{
printf("Open file error!\n");
exit(0);
}
fgets(cFileName, 250, fp);
printf("%s", cFileName);
fclose(fp);
return OK;
}
int main()
{
Stu *head = NULL;
head = CreateList();
SaveToFiles(head);
OpenFiles();
//Print(head);
return 0;
}
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Please read the posting guidelines[^]. For instance, format your code properly using the code tag (otherwise, it is not readable).
Furthermore, you didn't ask any question and you didn't provide any description of the problem you encounter.
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In addition to Cedric's good advice, you should review the CreateList() function, to see what it actually returns.
MVP 2010 - are they mad?
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Hello!
In my MFC programm on Visual C++ 2008 i have the following problem with opening a file for reading:
-------------------------------------------
1) First step i do is to unzip a existing file (sSourceFile) containing my data with CZipArchive
Here to simplify matters without exception handling:
CZipArchive ZipArchive;
ZipArchive.Open(sSourceFile, CZipArchive::zipOpenReadOnly);
for (int i = 0; i < ZipArchive.GetCount(); i++)
{
ZipArchive.SetPassword(key);
ZipArchive.ExtractFile(i, GetProgramPath()); // GetProgramPath() is a own method which returns the current path
}
ZipArchive.Close();
-------------------------------------------
2) After that i rename the unzipped file:
DeleteFile(sTargetFile);
CFile::Rename( sSourceFile, sTargetFile ); // both, sSourceFile and sTargetFile, with full qualified path
So far it works without problems. The sTargetFile exists (reviewed by debugging).
-------------------------------------------
3) Now i want to open the renamed file for reading
CFile file;
file.Open(sTargetFile, CFile::modeRead);
-------------------------------------------
After that on some machines (with Windows 7) i get an CFileException::sharingViolation exception.
But on the most machines it works without an exception.
What is the matter for this exception?
Does the CFile::Rename still block the file?
How i can wait until the file is definitively closed?
Please help me!
modified on Sunday, January 31, 2010 5:51 AM
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good idea, but the problem is a time-critical affair. This means as soon as i have for example a built-in debug message after CFile:Rename and CFile:Open, the problem disappears. So i can not look which process has the file between CFile:Rename and CFile:Open.
Any other help there?
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Quick question - I'm wondering how I can detect when the user presses the enter key on the edit control in my dialogBox(), ie what messages do i need to handle in the dialog procedure?
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WM_COMMAND with LOWORD(wParam) == IDOK and (HWND)lParam == your edit control HWND.
cheers,
AR
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thanks for that! Works beautifully 
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You're welcome
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You may also want to investigate whether the ES_WANTRETURN setting is appropriate to your control.
MVP 2010 - are they mad?
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my control is a single-line edit box, so ES_WANTRETURN won't be needed
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Hi all,
i m using this to set background color of menu.
To change the background color of MenuBar, simply add below's line of code, beginning of mainframe OnCreate
CBrush* NewBrush;
NewBrush = new CBrush;
NewBrush->CreateSolidBrush(RGB(139,137,137));
MENUINFO MenuInfo = {0};
MenuInfo.cbSize = sizeof(MenuInfo);
MenuInfo.hbrBack = *NewBrush; // Brush you want to draw
MenuInfo.fMask = MIM_BACKGROUND;
MenuInfo.dwStyle = MNS_AUTODISMISS;
CMenu* pMenu = this->GetMenu();
if(IsMenu(pMenu->m_hMenu))
{
SetMenuInfo(pMenu->m_hMenu, &MenuInfo);
}
after using this,color of menu bar is changed but the color of menu items not changed.
please tell me how can i change the menu items color.
thanks in advance.
To accomplish great things, we must not only act, but also dream;
not only plan, but also believe.
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Use owner-drawn menus. There are plenty of samples - just search the C++ articles for 'owner-drawn menu'.
L u n a t i c F r i n g e
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Hi,
In my application i have funtion like
char* CTagController :: SendInitialPoints()
{
union UController CON;
memset(CON.Buffer,0,CONSIZE);
CON.S.AlarmPriority =AlarmPriority;
CON.S.AlarmEnable =AlarmEnable;
CON.S.TagIndex =TagIndex;
.
.
.
.
return CON.Buffer;
}
In another function,im using this
char *pConInitData = 0 ;
pConInitData = pTagController->SendInitialPoints();
My problrem is,When i set Common Language Runtime Support (/clr) option in CLR support,
the pConInitData shows some garbage value.
If i set No Common Language Runtime support,then pConInitData returns correct value.
Whats the problem in setting /clr option.
Actually i convert VC6 to VS2008.Actually i want to set that /clr option,because im using some WPF controls in my applcaiton.
Pls help me
Anu
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It looks like you are returning a pointer to an area of memory that is part of a stack variable. Thus, when SendInitialPoints() returns CON is eligible for garbage collection and may disappear. You should allocate your buffer using new to ensure it does not disappear before you have finished with it.
MVP 2010 - are they mad?
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You can either allocate memory for the union on the heap as Richard said or you can create it on the stack from the caller function and pass it into the SendIntialPoints function.
char* CTagController::SendInitialPoints(UController& CON)
{
memset(CON.Buffer,0,CONSIZE);
CON.S.AlarmPriority =AlarmPriority;
CON.S.AlarmEnable =AlarmEnable;
CON.S.TagIndex =TagIndex;
.
.
.
.
return CON.Buffer;
}
This can be called as follows -
char *pConInitData = 0 ;
union UController CON;
pConInitData = pTagController->SendInitialPoints(CON);
In this case you do not need the function to return anything.
So the calling can be as follows -
union UController CON;
pTagController->SendInitialPoints(CON);
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Hi Guys,
I got a txt file which contains html codes in it.
<td class="ticker_name"><a href="http://finance.yahoo.com/q;_ylt=Al7he7j4xkWAM99.PPB7UVFO7sMF;_ylu=X3oDMTE5cnE2OWVuBHBvcwMzBHNlYwNtYXJrZXRTdW1tYXJ5SW5kaWNlcwRzbGsDbmFzZGFx?s=%5EIXIC" >Nasdaq</a></td><td><span class="streaming-datum" id="yfs_l10_^ixic">2,147.35</span></td><td class="ticker_down"><span class="streaming-datum" id="yfs_c10_^ixic">-31.65</span></td><td class="right_cell ticker_down"><span class="streaming-datum" id="yfs_pp0_^ixic">-1.45%</span>
how do i extract the value example 2,147.35 and -31.65 of NASDAQ
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