C / C++ / MFC Discussion Boards

toxcct2-Mar-06 2:01

2-Mar-06 2:01

if only the 3 bits are important for you there, you don't need to make all the concatenation stuff... only get the last byte (here 0x4B), cast it into an int (char c = array[5]) and mask it : c = c & 0x07

binary to decimal

srija2-Mar-06 5:05

srija

2-Mar-06 5:05

Yes, you are correct, just i used strcat(), it worked for me.
now i got one more problem, how can i represent a binary value of 11100001110 into a decimal?

Re: binary to decimal

David Crow2-Mar-06 6:42

David Crow

2-Mar-06 6:42

srija wrote:
...how can i represent a binary value of 11100001110 into a decimal?

Are you wanting to know how to represent a base-2 number as base-10 instead?

"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

Re: binary to decimal

chaitanya222-Mar-06 6:55

chaitanya22

2-Mar-06 6:55

Can i use atoi function????plz check this??

s[20]=11100001110
int power = 1;
int sum = 0;
for (int i = l-1; i >= 0; l--)
{sum += power * atoi(s[i]);
power = power * 2;
}
printf("%d", sum)

Re: binary to decimal

srija2-Mar-06 7:40

srija

2-Mar-06 7:40

but atoi fuction si not working

Re: binary to decimal

David Crow2-Mar-06 7:42

David Crow

2-Mar-06 7:42

Why go to all of this trouble when strtoul() will work just fine?

"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

Re: binary to decimal

srija2-Mar-06 7:05

srija

2-Mar-06 7:05

yes, i need it so... the value of 11100001110. i,e some 1806 or so...

Re: masking

walter762-Mar-06 1:55

walter76

2-Mar-06 1:55

I am not sure what you mean with masking, but if you like to extract a hexadecimal value from a string and want to set the last 3 bits to 0 you can do it like this:

#include <stdlib.h>
#include <stdio.h>

int main(int argc, char **argv) {
    char myHexString[] = "1A";
    unsigned char myByte = 0x0;
    sscanf(myHexString, "%X", &myByte);
    myByte &= 0xF8; // set the last three bits of the byte to 0
    printf("%d, 0x%x\n", myByte, myByte);
    return 0;
}

Hope that helps you out.

Walter

-- modified at 7:55 Thursday 2nd March, 2006

Custom Recordset

Malli_S2-Mar-06 1:32

Malli_S

2-Mar-06 1:32

Hello Friends !
I wanna to implement custom recordset (with dynamic fields,i.e. not from any table). Here I can do in VB as below :
'ResponseInfo is an ADODB recordset.
Public ResponseInfo As ADODB.Recordset
Set ResponseInfo = New ADODB.Recordset
Do Until <somecondition_overhere>
ResponseInfo.Fields.Append "FieldName", adVarChar, 250
Loop

ResponseInfo.Open
ResponseInfo.AddNew
'some blaa blaa
ResponseRs.MoveFirst

Do Until ResponseRs.EOF
'some blaa blaa code over here
ResponseRs.MoveNext
Loop

hope so, you've got what I wanna to do. Here I'm just building the recordset with dynamic field definitions, no query/table is used to build the recordset. So, I tried the same in VC++ (using #import "msado15.dll") , but it's not working. The open() requires the parameters, is there any other solution for this, so that i can build the recordset with custom columns (not building rset from any table/database).
Please get me some help...!!! Sniff | :^)

-Malli...!

Re: Custom Recordset

Xing Chen2-Mar-06 15:18

Xing Chen

2-Mar-06 15:18

you can specify the SQL query string to _RecordsetPtr after you build the table,like

m_pRecordSet->Open("Select name,caption from users", m_pConnectionString, <br />
			adOpenKeyset, adLockOptimistic, adCmdText);

How to wait untill created process finishes.

9ine2-Mar-06 0:37

9ine

2-Mar-06 0:37

If we luanch console app from win app with createprocess() it returns immediatly while for example if console app takes several secs to execute can we make createprocess() run in blocking mode that is it should not return until console app terminates??

9ine

Re: How to wait untill created process finishes.

Stephen Hewitt2-Mar-06 0:48

Stephen Hewitt

2-Mar-06 0:48

STARTUPINFO si;
PROCESS_INFORMATION pi;

ZeroMemory( &si, sizeof(si) );
si.cb = sizeof(si);
ZeroMemory( &pi, sizeof(pi) );

// Start the child process.
CreateProcess(
NULL,
"C:\\Windows\\Notepad.exe",
NULL,
NULL,
FALSE,
0,
NULL,
NULL,
&si,
&pi );
CloseHandle(pi.hThread);

// Wait until child process exits.
WaitForSingleObject(pi.hProcess, INFINITE);

CloseHandle(pi.hProcess);

Steve

Re: How to wait untill created process finishes.

9ine2-Mar-06 2:06

9ine

2-Mar-06 2:06

Great thanks.
But should we close thread handle before process is terminated?

9ine

Re: How to wait untill created process finishes.

Stephen Hewitt2-Mar-06 2:15

Stephen Hewitt

2-Mar-06 2:15

Closing a thread or process handle doesn't terminate the thread or process.

Steve

Re: How to wait untill created process finishes.

Rick York2-Mar-06 19:44

Rick York

2-Mar-06 19:44

The call to WaitForSingleObject takes a handle to the created process. The function waits until the object is signalled which occurs when the process exits so actually it does wait.

Code for getting list of all running services on pc

virz2-Mar-06 0:34

virz

2-Mar-06 0:34

hello...
I am working on VC++ programming.....I want code for getting list of all Services running on computer
Plz help me..
Reply me as early as possible

Thanking You.
Sincerely,
VIRAL PATEL

Re: Code for getting list of all running services on pc

Monty²2-Mar-06 0:56

Monty²

2-Mar-06 0:56

Not sure if this is what you need
but a list of services installed can be seen here

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services

C makes it easy to shoot yourself in the foot; C++ makes it harder, but when you do, it blows away your whole leg

Re: Code for getting list of all running services on pc

Naveen2-Mar-06 1:06

Naveen

2-Mar-06 1:06

if u want to get all the runnig process use the Api EnumProcesses()

nave

Re: Code for getting list of all running services on pc

ThatsAlok2-Mar-06 18:24

ThatsAlok

2-Mar-06 18:24

virz wrote:
want code for getting list of all Services running on computer

Try this http://www.codeproject.com/system/AMFSServiceManager.asp[^]

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers,
Alok Gupta
VC Forum Q&A :- I/ IV

drive info

sundar_mca2-Mar-06 0:19

sundar_mca

2-Mar-06 0:19

Hello i have a button if i press the button it should open explorer window and it should not show the D:drive its should be restricted to access.
how can i do that please help me

Re: drive info

ThatsAlok2-Mar-06 18:45

ThatsAlok

2-Mar-06 18:45

sundar_mca wrote:
it should not show the D:drive its should be restricted to access.

http://www.codeproject.com/system/SysUtil.asp

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers,
Alok Gupta
VC Forum Q&A :- I/ IV

Help with IHttpNegotiate

acroitor2-Mar-06 0:06

acroitor

2-Mar-06 0:06

Hi people,
I need some help with IHttpNegotiate interface.
I have a BHO that also implements IBindStatusCallback and IHttpNegotiate interfaces. Also it implements IDispatch interface to catch DWebBrowserEvents2. So in IDispatch's Invoke method I create a URLMoniker, as url I pass the url entered in the browser and bind it to my instance of IBindStatusCallback. I was expecting that IHttpNegotiate's BeginningTransaction method will get called for every request done by browser while loading the given url, I mean for requests to css,jscript,image, etc. but it only gets called for request done for the url itself. Can someone advise how to catch all the requests ?
Thanks.

Here is a bit of code where I create and register the URLMoniker:

<br />
STDMETHODIMP CIEPlugin::Invoke(DISPID dispidMember, REFIID riid, LCID lcid, WORD wFlags,<br />
                                         DISPPARAMS* pDispParams, VARIANT* pvarResult,<br />
                                         EXCEPINFO*  pExcepInfo,  UINT* puArgErr)<br />
{		<br />
	switch (dispidMember)<br />
	{<br />
		case DISPID_NAVIGATECOMPLETE2 :		<br />
			BSTR url;<br />
			m_spWebBrowser2->get_LocationURL(&url);<br />
//============================Moniker code=========================<br />
			DWebBrowserEvents2 *pstm;<br />
			IMoniker* ppmk;<br />
			CreateURLMoniker(NULL, url, &ppmk);			<br />
			IBindCtx *pbc;<br />
			CreateAsyncBindCtx(0, this, NULL, &pbc);<br />
			RegisterBindStatusCallback(pbc, this, NULL, 0); <br />
			ppmk->BindToObject(pbc, NULL, DIID_DWebBrowserEvents2,(void**)&pstm);		<br />
//=================================================================<br />
			break;<br />
		default:<br />
			break;<br />
	}<br />
	return S_OK;<br />
}<br />
//==== IHttpNegotiate method<br />
HRESULT CIEPlugin::BeginningTransaction (LPCWSTR szURL, LPCWSTR szHeaders, DWORD dwReserved, LPWSTR *pszAdditionalHeaders)<br />
{<br />
	MessageBox(NULL, bstr_t(szHeaders), "B", MB_OK);<br />
	return S_OK;<br />
}<br />

CSocket ASSERTS on Close

Sarath C1-Mar-06 23:48

Sarath C

1-Mar-06 23:48

Hi All,
when im closing a socket, the windows socket library ASSERTS.
when I debugged the code it is happening byb the following statment at CAsyncSocket::Close function.
"VERIFY(AsyncSelect(0))"

I could not find out the problem. can u help me?

regards
Sarath

Sarath

CWnd::CreateControl error when create .NET control

JohanOdin1-Mar-06 23:46

JohanOdin

1-Mar-06 23:46

I'm trying to use the CWnd::CreateControl method to create an .NET UserControl. Everything is ok until the control (window) is closed.

It seems that it is some reference count problem because the code stops at an ASSERT in the CCmdTarget class.

I provide an example. The client is built in VS 6.0 and the usercontrol is built in .NET 2005.

http://www.codeguru.com/forum/attachment.php?attachmentid=14627

Anyone else that have had the same problem. Please help me with this.

converting Hex to int

chaitanya221-Mar-06 23:04

chaitanya22

1-Mar-06 23:04

Hi,
How to convert an array of Hex values to int in Visual C, is there any function for converting?

chaitu

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