Problem with using VC6 dlls in VC7 - C / C++ / MFC Discussion Boards

Stephane Rodriguez.12-Oct-02 0:11

12-Oct-02 0:11

suresh_sathya wrote:
pXMLDoc=NULL;
pXMLDoc->Release();

This does not only produces a memory leak, it also does a very nice GPF! since you are using a null pointer to call Release().
So, first of all, pXMLDoc->Release() must be called before pXMLDoc=NULL;
Otherwise, it does not make much sense to use raw interfaces here, just use CComPtr<IXMLDOMDocument> pXMLDoc; instead. It will even release the object for you.

She's so dirty, she threw a boomerang and it wouldn't even come back.

Re: Increase in Memory size-Could u pl help

suresh_sathya12-Oct-02 0:39

suresh_sathya

12-Oct-02 0:39

I am just trying to parse xml and add some attribute names to my listbox.But when the program comes in for loop,it stops at third line and shows memory error.

Debug assertion failed

CComPtr<ixmldomdocument> pXMLDoc;
CComPtr <ixmldomnamednodemap> pXMLNamedNodeMap=NULL;
CComPtr <ixmldomnodelist> pXMLNodeList=NULL;
CComPtr <ixmldomnode> pXMLAttNode=NULL;
CComPtr <ixmldomnode> pXMLNode=NULL;

HRESULT hr;
CComBSTR bstrName;
CComVariant varValue;
CComVariant varNodeValue;
long lCount;
VARIANT_BOOL bIsSuccessful;

hr = CoInitialize(NULL);
hr = CoCreateInstance(CLSID_DOMDocument, NULL, CLSCTX_INPROC_SERVER,
IID_IXMLDOMDocument, (void**)&pXMLDoc);

if (FAILED(hr))
return(hr);

varValue="testing.xml";

hr=pXMLDoc->load(varValue,&bIsSuccessful);
pXMLDoc->selectNodes((_bstr_t)"DATABASE/TABLE[@Left]",&pXMLNodeList);
long Tablelen;
pXMLNodeList->get_length(&Tablelen);
HWND hListBox=GetDlgItem(hDlg,IDC_LIST);
CComVariant Tablename;

for(int ii=0;ii< Tablelen;ii++)
{

pXMLNodeList->get_item(ii,&pXMLNode);
pXMLNode->get_attributes(&pXMLNamedNodeMap);
pXMLNamedNodeMap->getNamedItem((_bstr_t)"Name",&pXMLNode);
pXMLNode->get_nodeValue(&Tablename);
//SendMessage(hListBox,LB_ADDSTRING,0,(LPARAM)(char *)(_bstr_t)Tablename);

}

Re: Increase in Memory size-Could u pl help

Stephane Rodriguez.12-Oct-02 1:23

Stephane Rodriguez.

12-Oct-02 1:23

There are many errors in this code. The best option is you get your hands on a working msxml sample first (download msxml 3 SDK, or msxml4 SDK, or platform SDK core services).
For instance, this article [^]on codeproject does such things.

She's so dirty, she threw a boomerang and it wouldn't even come back.

The CImageList Problem!

oly200211-Oct-02 23:37

oly2002

11-Oct-02 23:37

I wanted to display 10 bitmaps using CImageList
but why all the bitmaps were black

1.first ,I created a project "Cards",Imported 1,2,...,10
2.and I added variable in CCardsView
CImageList* m_pImageList
and the function

BOOL CCardsView::AddBitmap(UINT nResourceID)
{
CBitmap m_bmp;

if(m_bmp.LoadBitmap(nResourceID))
{
m_pImageList->Add(&m_bmp,RGB(256,256,256));
m_bmp.DeleteObject();

return TRUE;
}

return FALSE;
}

3.CCardsView::CCardsView()
{
// TODO: add construction code here
m_pImageList=new CImageList;
m_pImageList->Create(71,96,ILC_COLORDDB,256,1);

for(int i=1;i<11;i++)
{
AddBitmap(i);
}

}

4.CCardsView::~CCardsView()
{
if(m_pImageList!=NULL)
{
delete m_pImageList;
}
}

5.void CCardsView::OnDraw(CDC* pDC)
{
CCardsDoc* pDoc = GetDocument();
ASSERT_VALID(pDoc);
// TODO: add draw code for native data here

CPoint pos(0,0);

// m_pImageList->SetBkColor(CLR_NONE);
// m_pImageList->SetOverlayImage(0,1);

for(int i=0;i<10;i++)
{
m_pImageList->Draw(pDC,i,pos,ILD_NORMAL);

pos.x+=50;
}
}

Why? Unsure | :~

--oly--

Re: The CImageList Problem!

Stephane Rodriguez.12-Oct-02 0:12

Stephane Rodriguez.

12-Oct-02 0:12

RGB(256,256,256) is like RGB(0,0,0). Max channel value is 255.

She's so dirty, she threw a boomerang and it wouldn't even come back.

msado15.tlh problem

stevenson11-Oct-02 23:09

stevenson

11-Oct-02 23:09

hi,

this is the debug result:

f:\projects center\task history\mission 8_13\hydrosrv\debug\msado15.tlh(409) : warning C4146: unary minus operator applied to unsigned type, result still unsigned

and this is the source of warning:

enum RecordCreateOptionsEnum
{
    adCreateCollection = 8192,
    adCreateStructDoc = -2147483648,  //warning here
    adCreateNonCollection = 0,
    adOpenIfExists = 33554432,
    adCreateOverwrite = 67108864,
    adFailIfNotExists = -1
};

tell me how to fix this problem.

Thanks in advance

Extreme programming. Do the No.1

Re: msado15.tlh problem

Stephane Rodriguez.12-Oct-02 0:15

Stephane Rodriguez.

12-Oct-02 0:15

adCreateStructDoc = 0x80000000

She's so dirty, she threw a boomerang and it wouldn't even come back.

Problem with using VC6 dlls in VC7

mariuszpopiolek11-Oct-02 23:06

mariuszpopiolek

11-Oct-02 23:06

Hi
I have some dll set which I'm using in VC7. As long as it was compiled in VC7 everything was fine. Now, when I'm using the same dlls compiled in VC6, my program crashes when I'm trying to execute some code from this dlls. Is this a problem of using import libraries (lib files) from VC6 (I mean that maybe lib files from VC6 cannot be used in VC7), or maybe whole dlls are incompatible (this would be very stupid I think), or maybe this dlls are just buggy(and previous dlls compiled in VC7 are not buggy). If this is a problem of lib files is there a way to convert lib from VC6 to VC7 (I can't recompile this dlls). I know one "easy" solution to my problem: getting back to VC6, but of course it's not a good idea (probably I used some VC7 features and because program is quite big there would be a lot of work to do, additionally I just got used to VC7 and I like it Smile | :)

). Anyone have some hints? Thanks in advance

Mariusz Popiolek

Code Crash!!!

John Bosko11-Oct-02 22:13

John Bosko

11-Oct-02 22:13

Hi,
I've written a code which replaces characters in a string with their respective URLEncode (i.e a " " will be replaced by "+" etc..).
However the code crashes at execution.
Please help!!
Here's the code extract;
Code:
>-----------------------------------------------------------------------------
for(j=0;j

Re: Code Crash!!!

Nish Nishant11-Oct-02 22:21

Nish Nishant

11-Oct-02 22:21

Hmmm

When you post code here, you must use > for > and < for < else your post will get partially swallowed by the browser's html rendering engine.

Nish

Author of the romantic comedy

Summer Love and Some more Cricket [New Win]

Review by Shog⁹
Click here for review[NW]

Re: Code Crash!!!

Stephane Rodriguez.11-Oct-02 23:20

Stephane Rodriguez.

11-Oct-02 23:20

for(j=0;j<one.length();j++)
{
  indxD = one.find_first_of ( " " , 0 );
  one.replace(indxD,1,"%2B",3);
}

From the problem I see, you should escape % and replace it to %%2B, while the length is still 3. (Escaping escape code, weird that!).

She's so dirty, she threw a boomerang and it wouldn't even come back.

Re: Code Crash!!!

Stephane Rodriguez.11-Oct-02 23:32

Stephane Rodriguez.

11-Oct-02 23:32

In addition, your encode routine is completely wrong. Spaces should be replaced with +, while non alphabetical characters should be replaced with their hex ascii representation prefixed with a %.
That's not exactly what you are doing.

It's also questionable because whether you are using javascript (escapeurl), ASP (urlencode), C++ (InternetCanonicalizeUrl, UrlEscape), .NET (HttpUtility.UrlEncode), you've many SAFE ways to do it already. Why reinvent that f***ing squared wheel ? WTF | :WTF:

She's so dirty, she threw a boomerang and it wouldn't even come back.

who is it?

includeh1011-Oct-02 21:12

includeh10

11-Oct-02 21:12

i connect to a server (a game server), now i want to know the server's ip address (i.e. 123.222.111.222) and port the server used, do u think it is possible?

thanks for any info and help.

includeh10

Re: who is it?

Nish Nishant11-Oct-02 22:19

Nish Nishant

11-Oct-02 22:19

includeh10 wrote:
i connect to a server (a game server), now i want to know the server's ip address (i.e. 123.222.111.222) and port the server used, do u think it is possible?

Well, to connect to the server you need the IP address of the server (or domain name) and the listening port. So if you do not know either of them, you wouldn't be in the server in the first place.

Regards,
Nish

Author of the romantic comedy

Summer Love and Some more Cricket [New Win]

Review by Shog⁹
Click here for review[NW]

Re: who is it?

Stephane Rodriguez.11-Oct-02 23:38

Stephane Rodriguez.

11-Oct-02 23:38

try tracert in a dos console.

She's so dirty, she threw a boomerang and it wouldn't even come back.

Re: who is it?

carrie12-Oct-02 0:42

carrie

12-Oct-02 0:42

or try netstat in a dos console to find a list of connections your computer currently has.

A notify icon problem

Kerry Chou11-Oct-02 19:01

Kerry Chou

11-Oct-02 19:01

Hello everyone,
I am writing a application that has a notify icon in the status area. Now I get in trouble in preventing the icon disappearing after the 'explorer.exe' is terminated and restarted. Who can help me? Thanks.

Kerry Chou (STU)

Kerry Chou from STU

Re: A notify icon problem

Nish Nishant11-Oct-02 22:17

Nish Nishant

11-Oct-02 22:17

[already answered you in the newsgroup, but in this case you also get mail notification]

If your main window receives a message whose value is equal to RegisterWindowMessage(TEXT("TaskbarCreated")) then this means the taskbar is being recreated and you should re-add your tray icons. Remember that this message is NOT sent to your tray icon message handler, but it is sent to the application's top level window (usually your main frame window)

Regards,
Nish

Author of the romantic comedy

Summer Love and Some more Cricket [New Win]

Review by Shog⁹
Click here for review[NW]

Re: A notify icon problem

Kerry Chou11-Oct-02 22:58

Kerry Chou

11-Oct-02 22:58

Thank you Nish, I have resolved the problem.
But I can not find any information about the 'lpString' parameter of 'RegisterWindowMessage(LPCTSTR lpString)' function in MSDN, how can I identify the lpString parameter when I want to define a new window message?
Thanks!

Kerry Chou from STU

Re: A notify icon problem

Nish Nishant12-Oct-02 1:19

Nish Nishant

12-Oct-02 1:19

Kerry Chou wrote:
Thank you Nish, I have resolved the problem.
But I can not find any information about the 'lpString' parameter of 'RegisterWindowMessage(LPCTSTR lpString)' function in MSDN, how can I identify the lpString parameter when I want to define a new window message?
Thanks!

Kerry,

RegisterWindowMessage is used to register custom messages. Say you have 3 apps all wanting to communicate to each other. Now you can use RegisterWindowMessage to get a unique message ID. For example RegisterWindowMessage("Kerry's special message") will always return the same unique message ID for an entire session. Now you can broadcast this message to all top level windows and the other programs which are expecting this message can handle it.

Regards,
Nish

Author of the romantic comedy

Summer Love and Some more Cricket [New Win]

Review by Shog⁹
Click here for review[NW]

Dialog Box error

suresh_sathya11-Oct-02 18:44

suresh_sathya

11-Oct-02 18:44

When i show my dialog box iam calling this code in WM_INITDIALOG.I am loading the xml parser whenever i show my dialog box.I think that might be the problem for memory increase.What is the exact error.

IXMLDOMDocument2 *pIXMLDOMDocument2=NULL;
IXMLDOMNodeList *pIXMLDOMNodeList=NULL,*pIXMLDOMNodeList1=NULL;
IXMLDOMNode *pIXMLDOMNode=NULL,*pIXMLDOMNode1=NULL,*nextItem=NULL;
IXMLDOMNamedNodeMap *pIXMLDOMNamedNodeMap1 = NULL;
IClassFactory *pIClassFactory=NULL;

char strpath[300];
GetModuleFileName(NULL,strpath,300);
int len=strlen(strpath);
while(strpath[len]!='\\')
{
len=len-1;

}
strpath[len]='\0';

int retval=PathFileExists(strcat(strpath,"\\testing.xml"));

if(retval)
{

try
{

HRESULT hr;
CoInitialize(NULL);
hr=CoGetClassObject(CLSID_DOMDocument,CLSCTX_SERVER,NULL,IID_IClassFactory, (LPVOID*)(&pIClassFactory));
pIClassFactory->CreateInstance(NULL,IID_IXMLDOMDocument, (LPVOID*)(&pIXMLDOMDocument2));

if(SUCCEEDED(hr))
{

HWND BrowserWindow=(HWND)GetCommandLine();
DestroyWindow(BrowserWindow);
VARIANT_BOOL boolvalue;
VARIANT myvar;

myvar.vt=VT_BSTR;
myvar.bstrVal=L"testing.xml";

VARIANT Fieldname;
Fieldname.vt=VT_BSTR;
pIXMLDOMDocument2->put_async(FALSE);
VARIANT Tablename;
Tablename.vt=VT_BSTR;
HRESULT hrload;
long Tablelen;

hrload=pIXMLDOMDocument2->load((_variant_t)myvar.bstrVal,&boolvalue);
pIXMLDOMDocument2->selectNodes((_bstr_t)"DATABASE/TABLE",&pIXMLDOMNodeList);
pIXMLDOMNodeList->get_length(&TotTablelen);

hrload=pIXMLDOMDocument2->load((_variant_t)myvar.bstrVal,&boolvalue);
pIXMLDOMDocument2->selectNodes((_bstr_t)"DATABASE/TABLE[@Left]",&pIXMLDOMNodeList);
pIXMLDOMNodeList->get_length(&Tablelen);
HWND hListBox=GetDlgItem(hDlg,IDC_LIST);

for(int i=0;i< Tablelen;i++)
{

pIXMLDOMNodeList->get_item(i,&pIXMLDOMNode);
pIXMLDOMNode->get_attributes(&pIXMLDOMNamedNodeMap1);
pIXMLDOMNamedNodeMap1->getNamedItem((_bstr_t)"Name",&pIXMLDOMNode);
pIXMLDOMNode->get_nodeValue(&Tablename);
SendMessage(hListBox,LB_ADDSTRING,0,(LPARAM)(char *)(_bstr_t)Tablename);

}
}
}
catch (_com_error &e)
{
MessageBox(NULL,(char*)e.Description(),NULL,MB_OK);
}

}
CHECK_AND_RELEASE(pIXMLDOMDocument2);
CHECK_AND_RELEASE(pIXMLDOMNodeList);
CHECK_AND_RELEASE(pIXMLDOMNodeList1);
CHECK_AND_RELEASE(pIXMLDOMNamedNodeMap1);
CHECK_AND_RELEASE(pIXMLDOMNode);
CHECK_AND_RELEASE(pIXMLDOMNode1);
CHECK_AND_RELEASE(nextItem);
CoUninitialize();

}

Re: Dialog Box error

Michael Dunn11-Oct-02 19:48

Michael Dunn

11-Oct-02 19:48

What are you asking about? What error is happening? Or are you wondering why your memory usage goes up?
The code has a lot of errors in it, such as:

Use PathRemoveFileName() and PathAppend() to make the XML name; your current code is not DBCS-safe.
Use CoCreateInstance() to create the XML parser object in one call.
CLSCTX_SERVER isn't a valid constant, should be CLSCTX_INPROC_SERVER.
You don't initialize your VARIANTs.
L"testing.xml" is not a BSTR

and so on.

--Mike--
Just released - 1ClickPicGrabber - Grab & organize pictures from your favorite web pages, with 1 click!
My really out-of-date homepage
Sonork-100.19012 Acid_Helm

How we by pass Window Printer Dialog?

Anonymous11-Oct-02 17:16

Anonymous

11-Oct-02 17:16

Hi,

We are using these with VC+ 6.0:

<br />
OnPrint()<br />
{<br />
    CPrintDialog printDlg(FALSE);<br />
<br />
    if (printDlg.DoModal() == IDCANCEL)     // Get printer settings from user<br />
        return;<br />
    ----------------<br />
}<br />

So if we choose OK then it will Print, Cancel then not (return)

What can we do to print immediately ... without having to select OK button ... any trick to skip this without confirm?

Thanks

Re: How we by pass Window Printer Dialog?

Paul M Watt11-Oct-02 18:11

Paul M Watt

11-Oct-02 18:11

Look at CView::OnPreparePrinting

Build a man a fire, and he will be warm for a day
Light a man on fire, and he will be warm for the rest of his life!

Re: How we by pass Window Printer Dialog?

Anonymous12-Oct-02 12:04

Anonymous

12-Oct-02 12:04

Hi,

Thanks for the tip, I will ry.

Regards,

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