Re: percentage on progress bar - C / C++ / MFC Discussion Boards

Anthony Mushrow16-Nov-06 1:57

16-Nov-06 1:57

You could do it with a for loop, find the length of the file in bytes (using a while loop or otherwise)

then do a for loop but backwards

for(int i=FileLength; i>=0; i -=1) {

//Read the file i number of bytes

}

Re: How to read file in reverse order?

David Crow16-Nov-06 3:04

David Crow

16-Nov-06 3:04

Why do you need to do this? I would suggest reading the file into a buffer, and then reversing that buffer. It'll be much faster this way.

"Approved Workmen Are Not Ashamed" - 2 Timothy 2:15

"Judge not by the eye but by the heart." - Native American Proverb

Re: How to read file in reverse order?

Maximilien16-Nov-06 3:46

Maximilien

16-Nov-06 3:46

or reading the file and inserting in the buffer at the beginning instead of at the end.

Maximilien Lincourt
Your Head A Splode - Strong Bad

Re: How to read file in reverse order?

David Crow16-Nov-06 4:06

David Crow

16-Nov-06 4:06

Maximilien wrote:
or reading the file and inserting in the buffer at the beginning...

Which is how files are normally read. Confused | :confused:

"Approved Workmen Are Not Ashamed" - 2 Timothy 2:15

"Judge not by the eye but by the heart." - Native American Proverb

Re: How to read file in reverse order?

Maximilien16-Nov-06 13:15

Maximilien

16-Nov-06 13:15

I don't know, if I have to read a file in order, I will read a line ( for example, a text file ) and add the newly read line at the end of my "buffer".

if I want to read the file in reverse order, I might read the file in order and then sort internally what I have read, or try to read the file in reverse (from the end ) and add to the buffer at the end.

Maximilien Lincourt
Your Head A Splode - Strong Bad

Link Errors

fin116-Nov-06 1:19

fin1

16-Nov-06 1:19

Thismay not be the proper forum for this posting so I appoligise in advance if I have got it wrong, but i am hoping that someone can help me with my problem.

The problem is that when using IM with PDFMDD11.lib (thrid party Libraries) and third party lib under VS2005 and I then try to link to the StaticMTDLL IM Libraries I am recieving link errors indicating objects already defined.

I believe that the problem is a conflict of some kind between the PDF image libraries for reading/writing TIFF, PNG, and JPEG files and the Imagemagic Libraries. Can anyone help me put with this and provide a solution if possable.

The errors read.

>log4cppD.lib(CategoryStream.obj) : warning LNK4075: ignoring
'/EDITANDCONTINUE' due to '/INCREMENTAL:NO' specification

1>CORE_DB_magick_.lib(nt-base.obj) : error LNK2005: _DllMain@12 already
defined in MSVCRTD.lib(dllmain.obj)

1>CORE_DB_tiff_.lib(tif_error.obj) : error LNK2005: _TIFFSetErrorHandler
already defined in pdfMDD11.lib(tif_error.obj)

1>CORE_DB_tiff_.lib(tif_error.obj) : error LNK2005: _TIFFError already
defined in pdfMDD11.lib(tif_error.obj)

1>CORE_DB_tiff_.lib(tif_warning.obj) : error LNK2005: _TIFFSetWarningHandler
already defined in pdfMDD11.lib(tif_warning.obj)

1>CORE_DB_tiff_.lib(tif_warning.obj) : error LNK2005: _TIFFWarning already
defined in pdfMDD11.lib(tif_warning.obj)

1>CORE_DB_png_.lib(pngvcrd.obj) : error LNK2005: _png_mmx_support already
defined in pdfMDD11.lib(png.obj)

1>..\..\output\Debug\Controller_win.dll : fatal error LNK1169: one or more
multiply defined symbols found

Options that I have tried include the /FORCE switch usage on the Linker Command line. Any solution ideas would be welcomed

Many thanks

Nigel
Sniff | :^)

percentage on progress bar

Sunshine Always16-Nov-06 1:03

Sunshine Always

16-Nov-06 1:03

hi how to show percentage completion on progress bar?
thanks

Re: percentage on progress bar

Viorel.16-Nov-06 1:27

Viorel.

16-Nov-06 1:27

Maybe you should add a label control (CStatic) near your progress bar, and set its text programmatically? Something like this:

CString s;
s.Format(_T("%i%%"), m_cMyProgressBar.GetPos());
m_cMyLabel.SetWindowText(s);

I hope this helps.

Re: percentage on progress bar

David Crow16-Nov-06 3:05

David Crow

16-Nov-06 3:05

See here.

"Approved Workmen Are Not Ashamed" - 2 Timothy 2:15

"Judge not by the eye but by the heart." - Native American Proverb

Re: percentage on progress bar

Hamid_RT16-Nov-06 8:05

Hamid_RT

16-Nov-06 8:05

I saw examples on the codeproject about it did you search on codeproject

WhiteSky

Set IP programmatically [modified]

A_Fa16-Nov-06 0:00

A_Fa

16-Nov-06 0:00

How can I change IP address of my system programmatically ?

Thanks .

Re: Set IP programmatically

TClarke16-Nov-06 0:50

TClarke

16-Nov-06 0:50

the IPM_SETADDRESS message

Tom

Re: Set IP programmatically

TClarke16-Nov-06 0:52

TClarke

16-Nov-06 0:52

No sorry, Ihavn't woken up this morning yet, I was thinking of the IP control Blush | :O

Sorry
Tom

Re: Set IP programmatically

Mila02516-Nov-06 0:57

Mila025

16-Nov-06 0:57

Hi,

try to check this AddIPAddress[^], and analyze the sample

And other view on this issue (I'm not sure if recommended by MS) Changing IPADDRESS[^]

-----------
Mila

Re: Set IP programmatically

TClarke16-Nov-06 2:11

TClarke

16-Nov-06 2:11

Here is another way of doing it, Sorry about earlier

<br />
//**************************************************************************<br />
//<br />
// Description:<br />
//              Call EnableStatic method of Win32_NetworkAdapterConfiguration<br />
//<br />
// Note:<br />
//              The index property of the network adapter instance should be <br />
//              changed depending<br />
//              on your target system. Usually on NT4 systems the index of<br />
//              the ethernet<br />
//              adapter is 1 and on a win2k system the index is 0.<br />
//              The EnableStatic method is not supported on Win9x platforms<br />
//<br />
**************************************************************************<br />
<br />
#define POLARITY<br />
#define _WIN32_DCOM<br />
<br />
#include <br />
#include <br />
using namespace std;<br />
#include <br />
#include <br />
#include <br />
#include <br />
#include <br />
#include <br />
<br />
#include <br />
<br />
//int main(int iArgCnt, char ** argv)<br />
int WMIEnableStatic()<br />
{<br />
    IWbemLocator *pLocator = NULL;<br />
    IWbemServices *pNamespace = 0;<br />
    IWbemClassObject * pClass = NULL;<br />
    IWbemClassObject * pOutInst = NULL;<br />
    IWbemClassObject * pInClass = NULL;<br />
    IWbemClassObject * pInInst = NULL;<br />
  <br />
    BSTR path = SysAllocString(L"root\\cimv2");<br />
    BSTR ClassPath = SysAllocString(L"Win32_NetWorkAdapterConfiguration");<br />
    BSTR InstancePath =<br />
SysAllocString(L"Win32_NetWorkAdapterConfiguration.Index='1'");<br />
    BSTR MethodName = SysAllocString(L"EnableStatic");<br />
    BSTR ArgName1 = SysAllocString(L"IPAddress");<br />
    BSTR ArgName2 = SysAllocString(L"SubNetMask");<br />
<br />
    // Initialize COM and connect up to CIMOM<br />
<br />
    HRESULT hr = CoInitializeEx(0, COINIT_MULTITHREADED); <br />
<br />
        hr = CoInitializeSecurity(NULL, -1, NULL, NULL,<br />
        RPC_C_AUTHN_LEVEL_CONNECT, <br />
        RPC_C_IMP_LEVEL_IMPERSONATE, <br />
        NULL, EOAC_NONE, 0<br />
        );<br />
<br />
    hr = CoCreateInstance(CLSID_WbemLocator, 0, CLSCTX_INPROC_SERVER,<br />
            IID_IWbemLocator, (LPVOID *) &pLocator);<br />
<br />
    hr = pLocator->ConnectServer(path, NULL, NULL, NULL, 0, NULL, NULL,<br />
&pNamespace);<br />
<br />
    if(hr != WBEM_S_NO_ERROR)<br />
        return 1;<br />
<br />
    cout << "Connected to WMI" << endl;<br />
        <br />
    // Set the proxy so that impersonation of the client occurs.<br />
    hr = CoSetProxyBlanket(pNamespace,<br />
       RPC_C_AUTHN_WINNT,<br />
       RPC_C_AUTHZ_NONE,<br />
       NULL,<br />
       RPC_C_AUTHN_LEVEL_CALL,<br />
       RPC_C_IMP_LEVEL_IMPERSONATE,<br />
       NULL,<br />
       EOAC_NONE<br />
    );<br />
<br />
    <br />
    // Get the class object<br />
<br />
    hr = pNamespace->GetObject(ClassPath, 0, NULL, &pClass, NULL);<br />
    if(hr != WBEM_S_NO_ERROR)<br />
        return 1;<br />
<br />
<br />
    // Get the input argument and set the property<br />
<br />
    hr = pClass->GetMethod(MethodName, 0, &pInClass, NULL); <br />
    if(hr != WBEM_S_NO_ERROR)<br />
        return 1;<br />
<br />
    hr = pInClass->SpawnInstance(0, &pInInst);<br />
    if(hr != WBEM_S_NO_ERROR)<br />
        return 1;<br />
<br />
<br />
        BSTR ip;<br />
        ip = SysAllocString(L"10.0.0.3");<br />
<br />
        BSTR mask;<br />
        mask = SysAllocString(L"255.255.255.0");<br />
<br />
        long index[]={0};<br />
<br />
        SAFEARRAY *ip_list;<br />
        ip_list = SafeArrayCreateVector(VT_BSTR,0,1);<br />
        SafeArrayPutElement(ip_list,index,ip);<br />
        <br />
        SAFEARRAY *mask_list;<br />
        mask_list = SafeArrayCreateVector(VT_BSTR,0,1);<br />
        SafeArrayPutElement(mask_list,index,mask);<br />
<br />
    VARIANT arg1;<br />
    arg1.vt = VT_ARRAY|VT_BSTR;<br />
    arg1.parray = ip_list;<br />
    hr = pInInst->Put(ArgName1, 0, &arg1, 0);<br />
<br />
    VARIANT arg2;<br />
    arg2.vt = VT_ARRAY|VT_BSTR;;<br />
    arg2.parray = mask_list;<br />
    hr = pInInst->Put(ArgName2, 0, &arg2, 0);<br />
<br />
    // Call the method<br />
<br />
    hr = pNamespace->ExecMethod(InstancePath, MethodName, 0, NULL, pInInst,<br />
&pOutInst, NULL);<br />
    if(hr != WBEM_S_NO_ERROR){<br />
                cout << "ExecMethod failed " << hr;<br />
        return 1;<br />
        }<br />
    <br />
        // Get the EnableStatic method return value <br />
<br />
        VARIANT ret_value;<br />
        BSTR strReturnValue = SysAllocString(L"ReturnValue");<br />
        hr = pOutInst->Get(strReturnValue, 0, &ret_value, 0, 0);<br />
        long ret = V_I4(&ret_value);<br />
        if(ret != 0) {<br />
                cout << "EnableStatic failed with return code = " << ret;<br />
        }else{<br />
                cout << "EnableStatic succeeded" << endl;<br />
        }<br />
<br />
    // Free up resources<br />
<br />
        SysFreeString(strReturnValue);<br />
        VariantClear(&ret_value);<br />
        SysFreeString(ip);<br />
        SysFreeString(mask);<br />
        SafeArrayDestroy(ip_list);<br />
        SafeArrayDestroy(mask_list);<br />
        VariantClear(&arg1);<br />
    VariantClear(&arg2);<br />
<br />
    SysFreeString(path);<br />
    SysFreeString(ClassPath);<br />
        SysFreeString(InstancePath);<br />
    SysFreeString(MethodName);<br />
    SysFreeString(ArgName1);<br />
    SysFreeString(ArgName2);<br />
<br />
    pClass->Release();<br />
    pInInst->Release();<br />
    pInClass->Release();<br />
    pOutInst->Release();<br />
    pLocator->Release();<br />
    pNamespace->Release();<br />
    CoUninitialize();<br />
    return 0;<br />
}

Hope this helps a bit more Smile | :)

Tom

use <pre>

toxcct16-Nov-06 2:16

toxcct

16-Nov-06 2:16

edit you post and use the <pre></pre> tags around your code.

thanks you Suspicious | :suss:

You don't know where to start ? ask a good friend

[VisualCalc 3.0][Flags Beginner's Guide]

Re: use <pre>

TClarke16-Nov-06 3:30

TClarke

16-Nov-06 3:30

As you prefer

//**************************************************************************
//
// Description:
// Call EnableStatic method of Win32_NetworkAdapterConfiguration
//
// Note:
// The index property of the network adapter instance should be 
// changed depending
// on your target system. Usually on NT4 systems the index of
// the ethernet
// adapter is 1 and on a win2k system the index is 0.
// The EnableStatic method is not supported on Win9x platforms
//
**************************************************************************

#define POLARITY
#define _WIN32_DCOM

#include 
#include 
using namespace std;
#include 
#include 
#include 
#include 
#include 
#include 

#include 

//int main(int iArgCnt, char ** argv)
int WMIEnableStatic()
{
IWbemLocator *pLocator = NULL;
IWbemServices *pNamespace = 0;
IWbemClassObject * pClass = NULL;
IWbemClassObject * pOutInst = NULL;
IWbemClassObject * pInClass = NULL;
IWbemClassObject * pInInst = NULL;

BSTR path = SysAllocString(L"root\\cimv2");
BSTR ClassPath = SysAllocString(L"Win32_NetWorkAdapterConfiguration");
BSTR InstancePath =
SysAllocString(L"Win32_NetWorkAdapterConfiguration.Index='1'");
BSTR MethodName = SysAllocString(L"EnableStatic");
BSTR ArgName1 = SysAllocString(L"IPAddress");
BSTR ArgName2 = SysAllocString(L"SubNetMask");

// Initialize COM and connect up to CIMOM

HRESULT hr = CoInitializeEx(0, COINIT_MULTITHREADED); 

hr = CoInitializeSecurity(NULL, -1, NULL, NULL,
RPC_C_AUTHN_LEVEL_CONNECT, 
RPC_C_IMP_LEVEL_IMPERSONATE, 
NULL, EOAC_NONE, 0
);

hr = CoCreateInstance(CLSID_WbemLocator, 0, CLSCTX_INPROC_SERVER,
IID_IWbemLocator, (LPVOID *) &pLocator);

hr = pLocator->ConnectServer(path, NULL, NULL, NULL, 0, NULL, NULL,
&pNamespace);

if(hr != WBEM_S_NO_ERROR)
return 1;

cout << "Connected to WMI" << endl;

// Set the proxy so that impersonation of the client occurs.
hr = CoSetProxyBlanket(pNamespace,
RPC_C_AUTHN_WINNT,
RPC_C_AUTHZ_NONE,
NULL,
RPC_C_AUTHN_LEVEL_CALL,
RPC_C_IMP_LEVEL_IMPERSONATE,
NULL,
EOAC_NONE
);


// Get the class object

hr = pNamespace->GetObject(ClassPath, 0, NULL, &pClass, NULL);
if(hr != WBEM_S_NO_ERROR)
return 1;


// Get the input argument and set the property

hr = pClass->GetMethod(MethodName, 0, &pInClass, NULL); 
if(hr != WBEM_S_NO_ERROR)
return 1;

hr = pInClass->SpawnInstance(0, &pInInst);
if(hr != WBEM_S_NO_ERROR)
return 1;


BSTR ip;
ip = SysAllocString(L"10.0.0.3");

BSTR mask;
mask = SysAllocString(L"255.255.255.0");

long index[]={0};

SAFEARRAY *ip_list;
ip_list = SafeArrayCreateVector(VT_BSTR,0,1);
SafeArrayPutElement(ip_list,index,ip);

SAFEARRAY *mask_list;
mask_list = SafeArrayCreateVector(VT_BSTR,0,1);
SafeArrayPutElement(mask_list,index,mask);

VARIANT arg1;
arg1.vt = VT_ARRAY|VT_BSTR;
arg1.parray = ip_list;
hr = pInInst->Put(ArgName1, 0, &arg1, 0);

VARIANT arg2;
arg2.vt = VT_ARRAY|VT_BSTR;;
arg2.parray = mask_list;
hr = pInInst->Put(ArgName2, 0, &arg2, 0);

// Call the method

hr = pNamespace->ExecMethod(InstancePath, MethodName, 0, NULL, pInInst,
&pOutInst, NULL);
if(hr != WBEM_S_NO_ERROR){
cout << "ExecMethod failed " << hr;
return 1;
}

// Get the EnableStatic method return value 

VARIANT ret_value;
BSTR strReturnValue = SysAllocString(L"ReturnValue");
hr = pOutInst->Get(strReturnValue, 0, &ret_value, 0, 0);
long ret = V_I4(&ret_value);
if(ret != 0) {
cout << "EnableStatic failed with return code = " << ret;
}else{
cout << "EnableStatic succeeded" << endl;
}

// Free up resources

SysFreeString(strReturnValue);
VariantClear(&ret_value);
SysFreeString(ip);
SysFreeString(mask);
SafeArrayDestroy(ip_list);
SafeArrayDestroy(mask_list);
VariantClear(&arg1);
VariantClear(&arg2);

SysFreeString(path);
SysFreeString(ClassPath);
SysFreeString(InstancePath);
SysFreeString(MethodName);
SysFreeString(ArgName1);
SysFreeString(ArgName2);

pClass->Release();
pInInst->Release();
pInClass->Release();
pOutInst->Release();
pLocator->Release();
pNamespace->Release();
CoUninitialize();
return 0;
}

I've never used these before. What's the deal? the code seemed to apear as it should Confused | :confused:

tom

Re: use <pre>

TClarke16-Nov-06 3:32

TClarke

16-Nov-06 3:32

Why did you suggest I did that?

It looks terrible, all the formatting has gone!

Confused | :confused:

Tom

Re: use <pre>

toxcct16-Nov-06 3:38

toxcct

16-Nov-06 3:38

first of all, i told you to EDIT the existing post, to resposting again and again a huge bloc of code.

moreover, why i told you to use it? because Chris asks us to[^] (see 5.)! the code samples should be embraced by pre tags.

at last, it DOES PRESERVE the formating, but you used it wrongly.
if you want to see the empty lines, place at least a space on those lines.
and if you want to see some indentation, just put some spaces at the beginning ot your lines, and you'll see the spaces that doesn't appear in normal case...

oh, i was forgetting : when you put some #include statement, use the < and > html codes to print < >, otherwise, your include headers will be understood as html tags too.

You don't know where to start ? ask a good friend

[VisualCalc 3.0][Flags Beginner's Guide]

Re: use <pre>

TClarke16-Nov-06 4:12

TClarke

16-Nov-06 4:12

Thanks to your advice I also noted Chris said:

"Be courteous and DON'T SHOUT. Everyone here helps because they enjoy helping others, not because it's their job."

But, before this gets more out of shape. I agree what you said was completly valid as far as the response protocols I employed is concerned (That won't happen again) but the way you said it did not inspire me to seek to thoroughly correct myself.

Sorry if I pressed your buttons though.

Tom

Rose | [Rose]

Re: use <pre>

toxcct16-Nov-06 4:31

toxcct

16-Nov-06 4:31

i don't think i shouted though. i simply insisted on some words.

you could have said so if my sentence was all in caps...

btw, sorry if i hurted you, but loading the boards with huge posts and reposts is not helping...

You don't know where to start ? ask a good friend

[VisualCalc 3.0][Flags Beginner's Guide]

Re: use <pre>

Mark Salsbery16-Nov-06 4:52

Mark Salsbery

16-Nov-06 4:52

heh! Good post though!

I'm sure glad there's .NET for WMI - doing it in straight C/C++ is wordy! Smile | :)

Re: use <pre>

TClarke16-Nov-06 5:01

TClarke

16-Nov-06 5:01

Thanks Mark Smile | :)

Re: use <pre>

A_Fa17-Nov-06 20:25

A_Fa

17-Nov-06 20:25

Thanks friends TClarke,toxcct and Mila025 for your guide .

funtion over-loading error

odesh15-Nov-06 23:37

odesh

15-Nov-06 23:37

The following won't compile with the following error :
error C2660: 'B::f()' : function does not take 2 arguments

class A{<br />
public:<br />
	virtual void f(int a, int b);	<br />
};<br />
<br />
class B : public A{<br />
	virtual void f(int a)<br />
	{<br />
		f(a, 1);<br />
	}<br />
};

I fail to see the logic error !!! can anyway shed some light ? D'Oh! | :doh:

Odesh

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