How can i simple add a JPG image to my Dialog based application - C / C++ / MFC Discussion Boards

Dev Studio AddIn - Getting OnIdle() to work.

John Clayton12-Oct-02 5:27

12-Oct-02 5:27

Hi All - I'd love to know how I can get DevStudio VC6 to fire calls at my Addin's OnIdle() method - or at least to tell me somehow it's not doing anything and that I could do something during idle time.

Since the addin's are not allowed to run their own message pump (aka DevStudio application model is not thread safe) I can't just go ahead and slap a message queue in there with a thread to manage it.

What I've got is a socket connection to another server WITHIN MY ADDIN, and I want to be able to check whether there's any input on the socket during idle time.

I was also wondering if I could create a another thread then kinda 'post' messages across this thread boundary - but it requires that I hook something into the DevStudio message loop - which I don't know how to get hold of.

Any help is massively appreciated! Thank you.

--
John Clayton

Locating *my* icon in the system tray

Taka Muraoka12-Oct-02 3:20

Taka Muraoka

12-Oct-02 3:20

Anyone know how to do this?

Spy shows the system tray as a single window (with no children) so getting the window rect for that is no problem but can I then locate where my icon is within the systray?

Is Winsock XP different??

zbyrat12-Oct-02 2:44

zbyrat

12-Oct-02 2:44

I have very strange behaviour of application. It´s transfer of data with TCP/IP. I´m using ovellaped WSARecv, WSASend. There was no problem on Windows 98, NT 4, 2000...but on XP it doesn´t work. For example, when transferring data block whom size exceed 3760 bytes, on W2000 is complete, but on XP is limited to 3760. I´m talking about tests on local machine, but on network was result similar(i´dont know exactly how many bytes was transferred).
Sorry, my English it´s not very good, but I believe you understand Smile | :)

Re: Is Winsock XP different??

Mike Nordell12-Oct-02 5:56

Mike Nordell

12-Oct-02 5:56

Maybe just the XP stack has a lower MTU? Start by checking that (getsockopt with SO_MAX_MSG_SIZE).

Re: Is Winsock XP different??

zbyrat12-Oct-02 6:22

zbyrat

12-Oct-02 6:22

Thanks but...maybe I said it wrong, I talked about connection oriented socket, not UDP.

Memory leak

suresh_sathya12-Oct-02 2:23

suresh_sathya

12-Oct-02 2:23

Hi i tried to reduce my memory leak.I reduced that,but still only few bytes of memory leak.I checked everything,but still i cant find.Pl anybody can help.Thanks in advance.

HRESULT hr;
IXMLDOMDocument2 *pIXMLDOMDocument2=NULL;
IXMLDOMNodeList *pIXMLDOMNodeList=NULL;
IXMLDOMNode *pIXMLDOMNode=NULL,*pIXMLDOMNode1=NULL;
IXMLDOMNamedNodeMap *pIXMLDOMNamedNodeMap1 = NULL;
VARIANT_BOOL boolvalue;
long Tablelen;
CComVariant Tablename;

hr = CoInitialize(NULL);
hr = CoCreateInstance(CLSID_DOMDocument, NULL, CLSCTX_INPROC_SERVER,
IID_IXMLDOMDocument2, (void**)&pIXMLDOMDocument2);
CComVariant varValue="testing.xml";
if (FAILED(hr))
return(hr);
if(SUCCEEDED(hr))
{

hr=pIXMLDOMDocument2->load(varValue,&boolvalue);
pIXMLDOMDocument2->selectNodes((_bstr_t)"DATABASE/TABLE[@Left]",&pIXMLDOMNodeList);
pIXMLDOMNodeList->get_length(&Tablelen);
HWND hListBox=GetDlgItem(hDlg,IDC_LIST);
pIXMLDOMNodeList->reset();

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

pIXMLDOMNodeList->get_item(i,&pIXMLDOMNode);
pIXMLDOMNode->get_attributes(&pIXMLDOMNamedNodeMap1);
pIXMLDOMNode->Release();
pIXMLDOMNode=NULL;
pIXMLDOMNamedNodeMap1->getNamedItem((_bstr_t)"Name",&pIXMLDOMNode1);
pIXMLDOMNode1->get_nodeValue(&Tablename);
SendMessage(hListBox,LB_ADDSTRING,0,(LPARAM)(char *)(_bstr_t)Tablename);
pIXMLDOMNode1->Release();
pIXMLDOMNode1=NULL;
pIXMLDOMNamedNodeMap1->Release();
pIXMLDOMNamedNodeMap1=NULL;

}

CHECK_AND_RELEASE(pIXMLDOMDocument2);
CHECK_AND_RELEASE(pIXMLDOMNode1);
CHECK_AND_RELEASE(pIXMLDOMNodeList);
CHECK_AND_RELEASE(pIXMLDOMNode);
CHECK_AND_RELEASE(pIXMLDOMNamedNodeMap1);

}

CoUninitialize();

Re: Memory leak

MaximE12-Oct-02 11:29

MaximE

12-Oct-02 11:29

Jesus!!! Does this code work???

<br />
(_bstr_t)"DATABASE/TABLE[@Left]"<br />

What is this? Never, never do like this. Do:

<br />
_bstr_t(OLESTR("DATABASE/TABLE[@Left]"))<br />

<br />
pIXMLDOMNode->Release();<br />
pIXMLDOMNode=NULL;<br />

It's not bad, but pIXMLDOMNode = 0 is enough.

<br />
(LPARAM)(char *)(_bstr_t)Tablename<br />

Should be:

<br />
reinterpret_cast<LPARAM>(static_cast<TCHAR*>(_bstr_t(Tablename)))<br />

Such a bad cast should be explicit.

<br />
pIXMLDOMNode->get_attributes(&pIXMLDOMNamedNodeMap1);<br />

You are working with very smart pointer. Instead, do like this:

<br />
pIXMLDOMNamedNodeMap1 = pIXMLDOMNode->attributes;<br />

What is:

<br />
CHECK_AND_RELEASE(pIXMLDOMDocument2);<br />

May be it a:

<br />
#define CHECK_AND_RELEASE(x) x->AddRef()<br />

I don't know.

Summary.
1. Never, never use c-casts (like (_bstr_t)x, (LPARAM)y, etc). They are the worst evil, unless you damn sure that you do. It's very hard to find a bug in a such code.
2. Read about _com_ptr_t. Learn how it's intended to use.
3. Avoid macros.
4. Optional, but strongly recommended. Get a Stroustrup.

How can i simple add a JPG image to my Dialog based application

whofmans12-Oct-02 1:54

whofmans

12-Oct-02 1:54

Hello,

I have programmed a dialog based application and now i want to add a nice jpg image in the dialog.
Does someone know a simple way? Or does someone know a place where i can download a Control, which i can add to my project.

Thank you,

Willem

Sorry for my bad english..

Re: How can i simple add a JPG image to my Dialog based application

Michael P Butler12-Oct-02 2:00

Michael P Butler

12-Oct-02 2:00

This may be of some use,

http://www.codeproject.com/bitmap/cximage.asp[^]

Michael

"I've died for a living in the movies and tv.
But the hardest thing I'll ever do is watch my leading ladies,
Kiss some other guy while I'm bandaging my knee."
-- The Unknown Stuntman

Re: How can i simple add a JPG image to my Dialog based application

Nish Nishant12-Oct-02 2:06

Nish Nishant

12-Oct-02 2:06

If you can use GDI+ just put this in the WM_PAINT handler :-

CPaintDC dc(this); 
Graphics g(dc.m_hDC);
g.DrawImage(pimg,0,0);

pimg is an Image* (use Image::FromFile to load a JPG into pimg)

Nish

Author of the romantic comedy

Summer Love and Some more Cricket [New Win]

Review by Shog⁹
Click here for review[NW]

Copy - rename

Brakanjan12-Oct-02 1:49

Brakanjan

12-Oct-02 1:49

hi
is there a way to copy a file to the same directory and renaming the file all in one. I've tried CFile::Copy, then rename, then copy again, but it seems a bit clumsy...

Thanks

Re: Copy - rename

Nish Nishant12-Oct-02 2:09

Nish Nishant

12-Oct-02 2:09

Adrian2 wrote:
is there a way to copy a file to the same directory and renaming the file all in one. I've tried CFile::Copy, then rename, then copy again, but it seems a bit clumsy...

What exactly do you want to accomplish? Say you have a folder :- c:\abc. Now say you have a file one.gif. You want to copy c:\abc\one.gif to c:abc\two.gif and then rename one.gif to something else??? Is that what you want to do? If so, copy abc.gif to one.gif. Now rename abc.gif to whatever.gif! Pardon me if I misinterpreted your requirement.

Nish

Author of the romantic comedy

Summer Love and Some more Cricket [New Win]

Review by Shog⁹
Click here for review[NW]

Re: Copy - rename

Brakanjan12-Oct-02 2:25

Brakanjan

12-Oct-02 2:25

jip

c:\file1.txt must become c:file2.txt

Re: Copy - rename

Nish Nishant12-Oct-02 3:50

Nish Nishant

12-Oct-02 3:50

MoveFile("c:\\file1.txt","c:\\file2.txt");

Nish

Author of the romantic comedy

Summer Love and Some more Cricket [New Win]

Review by Shog⁹
Click here for review[NW]

Re: Copy - rename

Maximilien12-Oct-02 5:31

Maximilien

12-Oct-02 5:31

Or use ShFileOperation, which I think let you move/copy files when they are open.

how to develop web stress test software?

ricklau12-Oct-02 1:02

ricklau

12-Oct-02 1:02

I'm preparing to develop a web stress testing software.Could someone give me some advices, such as how to realistically reproduce multiple
browsers requesting pages from a web application, what technologies should we adopt...
Our software is aiming to realize three main fonctions:
1. simulate a request to the web server, and trace the process, in order to see if the web
application works normally. If there is a problem, we could know where is it. web server?
database? etc
2. automatize the test, that means to set the test automatically executed in a fix time.
3. simulate multiple users send the request to a website simultaneously, to verify if the web
application works properly under a given enough great number of users.

Thanks a lots!

rick

LOVE LING

Re: how to develop web stress test software?

Nish Nishant12-Oct-02 1:06

Nish Nishant

12-Oct-02 1:06

ricklau wrote:
3. simulate multiple users send the request to a website simultaneously, to verify if the web
application works properly under a given enough great number of users.

This can be done using multiple threads. Start n threads and get them all to attack a particular portion of the web site at the same time.

ricklau wrote:
2. automatize the test, that means to set the test automatically executed in a fix time.

You can either feed in a predefined set of URLs. Or you can parse the URLs in a web page and go to each of them automatically. And you'd also have to populate the form text and other fields with random data (sounds rather like a lot of work to me).

ricklau wrote:
1. simulate a request to the web server, and trace the process, in order to see if the web
application works normally. If there is a problem, we could know where is it. web server?
database? etc

I doubt if you can locate the error precisely. It might be a db error but the error might be due to buggy server side scripting.

Regards,
Nish

Author of the romantic comedy

Summer Love and Some more Cricket [New Win]

Review by Shog⁹
Click here for review[NW]

Re: how to develop web stress test software?

Daniel Turini12-Oct-02 7:08

Daniel Turini

12-Oct-02 7:08

Maybe what you need is taking a look at this:

http://www.windowswebsolutions.com/Articles/Index.cfm?ArticleID=7237[^]

My latest articles:
XOR tricks for RAID data protection
Win32 process suspend/resume tool

capture keystoke and screenshot in DOS mode

shitij12-Oct-02 1:00

shitij

12-Oct-02 1:00

Hi there,
I want to capture screenshot as well as keystrokes pressed in DOS mode. I have worked on Windows API for achieving these results. It is working fine in case of windows application. I just want to know why it is not happening in DOS promp mode. Is there anyway to achieve this.
I need expert guidance from all of you before reaching any conclusion on this part.
Thanks in advance,
Shitij.

Capture fields in active window

shitij12-Oct-02 0:58

shitij

12-Oct-02 0:58

Hi there,
I want to capture text and password field for an active window. Is there anyway to achieve this.
Thanks in advance,
Shitij.

Re: Capture fields in active window

Nish Nishant12-Oct-02 1:02

Nish Nishant

12-Oct-02 1:02

shitij wrote:
I want to capture text and password field for an active window. Is there anyway to achieve this.

Post a WM_GETTEXT to those child windows!

Nish

Author of the romantic comedy

Summer Love and Some more Cricket [New Win]

Review by Shog⁹
Click here for review[NW]

Re: how to develop web stress test software?

Stephane Rodriguez.12-Oct-02 0:20

Stephane Rodriguez.

12-Oct-02 0:20

You probably didn't googled before posting.

MS free stress tools[^]

http://webtool.rte.microsoft.com/comparison.htm
http://www.paessler.com/WebStress/webstress.htm

...

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

Increase in Memory size

suresh_sathya11-Oct-02 23:54

suresh_sathya

11-Oct-02 23:54

I just write this code in my initdialog of my dialogbox.so whenever i open this code,the memory size is increased.iam writing this code in win32application.Not an MFC Code.What might be the reason for memory leak above.

IXMLDOMDocument* pXMLDoc=NULL;
IXMLDOMNamedNodeMap* pXMLNamedNodeMap=NULL;
IXMLDOMNodeList* pXMLNodeList=NULL;
IXMLDOMNode* pXMLAttNode=NULL;
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);

if(hr)
{
pXMLDoc=NULL;
pXMLDoc->Release();
}

CoUninitialize();

Re: Increase in Memory size

Stephane Rodriguez.12-Oct-02 0:11

Stephane Rodriguez.

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);

}

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