WinAPI : DnsQuery_A and DNS_TYPE_LOC - C / C++ / MFC Discussion Boards

Re: How to get handle to an application?

iohanson14-Jan-07 23:20

14-Jan-07 23:20

You can use EnumWindow function (see MSDN). This way you'll get handles of all toplevel windows from your system. Now if you know some properties of the window you want to maximize(ex. windows name), you can easy find and maximize it.

Re: How to get handle to an application?

pri_skit15-Jan-07 21:08

pri_skit

15-Jan-07 21:08

thanx..

priyank

Re: How to get handle to an application?

#realJSOP14-Jan-07 23:25

#realJSOP

14-Jan-07 23:25

Instead of using ShellExecute, use CreateProcess. You can then eaisly get a handle to the app you executed.

"Why don't you tie a kerosene-soaked rag around your ankles so the ants won't climb up and eat your candy ass..." - Dale Earnhardt, 1997
-----
"...the staggering layers of obscenity in your statement make it a work of art on so many levels." - Jason Jystad, 10/26/2001

Re: How to get handle to an application?

pri_skit15-Jan-07 21:07

pri_skit

15-Jan-07 21:07

thanx..

priyank

Re: How to get handle to an application?

ead mahmoud15-Jan-07 0:53

ead mahmoud

15-Jan-07 0:53

SHELLEXECUTEINFO structure contains a member variable hProcess contains a handle to the new started process, but you mast set fmask to SEE_MASK_NOCLOSEPROCESS. and it will be NULL if no process launched.

Hope this help you.

Programmer/ Eid Mahmoud Taha

Re: How to get handle to an application?

pri_skit15-Jan-07 21:08

pri_skit

15-Jan-07 21:08

thanx..

priyank

Re: How to get handle to an application?

David Crow15-Jan-07 3:30

David Crow

15-Jan-07 3:30

pri_skit wrote:
Actually i am using ShellExecuteEx function...

Can you use ShellExecuteEx() instead?

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

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

WinAPI : DnsQuery_A and DNS_TYPE_LOC

robheffo14-Jan-07 22:55

robheffo

14-Jan-07 22:55

Hello Everyone,

I am doing some looking-up of DNS information with the DnsQuery API function. I can recieve A, MX & SOA Fields perfectly from any given hostname.

When I call DnsQuery_A with a wType of DNS_TYPE_LOC, the call succeeds, but I have no way to get the information I need since the Data union in the DNS_RECORD structure returned by the call has no DNS_LOC_DATA structure defined. I have tried casting the union to a DNS_LOC_DATA but I get invalid data.

Could somone point me in the right direction, I have been searching around for most of the day and I can't find any examples of the DNS_LOC_DATA struct in use, and MSDN also doesn't provide any information that is of use.

Thanks For Any Help!
Robert Heffernan
Albury, NSW

My Code Requesting A Field Data

<br />
dsRet = DnsQuery_A(ndDns->cHostname, DNS_TYPE_A, DNS_QUERY_STANDARD, NULL, &drRecords, NULL);<br />
<br />
if(dsRet != NOERROR)<br />
	return FALSE;<br />
<br />
// drRecords Contains Valid Data Here<br />

My Code Requesting LOC Field Data

<br />
dsRet = DnsQuery_A(ndDns->cHostname, DNS_TYPE_LOC, DNS_QUERY_STANDARD, NULL, &drRecords, NULL);<br />
<br />
if(dsRet != NOERROR)<br />
	return FALSE;<br />
<br />
dlLoc = (DNS_LOC_DATA *)&drRecords->Data; // <-- Doesn't Yield Usable Data<br />

To read IMDB file

Mushtaque Nizamani14-Jan-07 22:53

Mushtaque Nizamani

14-Jan-07 22:53

hi,

I have got an IMDB(In Memory Database) file, and i want to read that data from that file and copy that into database SQL or file using c++. any help?

If this is not the correct forum to ask this question, then i am extremely sorry for that.

Warm Regards,
Mushq

Re: To read IMDB file

David Crow15-Jan-07 3:32

David Crow

15-Jan-07 3:32

You question is way too big to answer in a sentence or two. Break your problem up into several smaller ones. Which part are you needing help with?

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

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

Structures and Member Variables Question

Andy20214-Jan-07 22:25

Andy202

14-Jan-07 22:25

In my Dialog (C++) application I kept getting an exception with the following code, define a strucure and creat a memebr variable of Type as per that stucture.

typedef struct <br />
{<br />
	CString	Name;<br />
	CString	rxChannel;<br />
	CString	txChannel;<br />
	bool		rxChannelDefined;<br />
	bool		txChannelDefined;<br />
}ACONFIGDATA;

But I got an exception (Bad Prt) when I did:-

m_As[Index].txChannel = chanData;

chanData is a CString.
However if I define the structure as follows:-

typedef struct <br />
{<br />
	char		Name[40];<br />
	char		rxChannel[3];<br />
	char		txChannel[3];<br />
	bool		rxChannelDefined;<br />
	bool		txChannelDefined;<br />
}ACONFIGDATA;

And use the following statement, all is fine.
strcpy_s(m_As[Index].txChannel, chanData);
I just want to understand how the exception was caused, please.

Re: Structures and Member Variables Question

prasad_som14-Jan-07 22:44

prasad_som

14-Jan-07 22:44

Can you show how you have declared m_As and using it ? Something other than metnioned code might cause problem ?

Prasad
Notifier using ATL | Operator new[],delete[][^]

Re: Structures and Member Variables Question

Andy20215-Jan-07 0:35

Andy202

15-Jan-07 0:35

Declared as

ACONFIGDATA m_As[256];

But when inspected (via breakpoint) all the CStrings were Bad Prts

Re: Structures and Member Variables Question

prasad_som15-Jan-07 1:04

prasad_som

15-Jan-07 1:04

Code seems to be harmless, unless, you are accessing invalid index(out of bounds).

Prasad
Notifier using ATL | Operator new[],delete[][^]

Re: Structures and Member Variables Question

Andy20215-Jan-07 1:12

Andy202

15-Jan-07 1:12

The index was in range so not that prblem.

Re: Structures and Member Variables Question

prasad_som15-Jan-07 1:39

prasad_som

15-Jan-07 1:39

May be you can mail across code. Cant figure out your problem from given info.

Prasad
Notifier using ATL | Operator new[],delete[][^]

Re: Structures and Member Variables Question

#realJSOP14-Jan-07 23:28

#realJSOP

14-Jan-07 23:28

Which object threw the exception - the m_As object or the chanData string variable?

Re: Structures and Member Variables Question

Andy20215-Jan-07 0:38

Andy202

15-Jan-07 0:38

When ever I tried to set any of the CString fields;

e.g. m_As[2].txChannel= "13";

The bool fields were OK, just the CString fields; all Bad Pointers!

Re: Structures and Member Variables Question

#realJSOP15-Jan-07 3:19

#realJSOP

15-Jan-07 3:19

If you're using VS2005, try changing your project's properties to use the multi-byte character set.

create thread in asm block

zon_cpp14-Jan-07 20:06

zon_cpp

14-Jan-07 20:06

hi,
i add a section for my exe file. in my section, i need to create a thread.
because my code in this section is with assembly language in asm block then, i call address of CreateThread api function to create my thtead, and before call, i push necessary parameters. i push address of myThreadFunc lable.
my exe is executed and my tread is created but "don't send" error appears.
is an example or article for my problem?

Zo.Naderi-Iran

Re: create thread in asm block

yeti1114-Jan-07 20:13

yeti11

14-Jan-07 20:13

Would this help?

http://win32assembly.online.fr/tut15.html

Re: create thread in asm block

zon_cpp15-Jan-07 18:27

zon_cpp

15-Jan-07 18:27

thank you

, this article was useful for me.
i call PostMessage api function end of myThreadFun.

Zo.Naderi-Iran

Re: create thread in asm block

yeti1115-Jan-07 21:48

yeti11

15-Jan-07 21:48

you are welcome Wink | ;)

btw, if you didnt check the page; http://win32assembly.online.fr

Iczelion page is great...

casting stl::vector confusion...

yeti1114-Jan-07 19:59

yeti11

14-Jan-07 19:59

In a vector are stored class pointers;

<br />
class sample1 : public mybase<br />
{<br />
}<br />
<br />
vector<sample1*> vec;<br />

I would like to cast it;

<br />
vector<mybase*> *result = (vector<mybase*>*)&vec;<br />

I got a response previously that it is not possible, but i dont understand why.

Actually i am not sure this is a problem for my core dump.

I have been thinking about; if i have pointer stored inside vector, at the end it
is stored as address to something and the address is the same size in any case. So
if i cast it, there should be no changes, but i still got a core dump (it works for
instance in 20 cases, but then one crashes).

Can someone enlighten me what is wrong (or it is correct and i have problem somewhere else?)?

Thank you...

Re: casting stl::vector confusion...

Stephen Hewitt14-Jan-07 20:24

Stephen Hewitt

14-Jan-07 20:24

It's possible but perverse. Technically there is a chance it will be dangerous; for example an explicit specialisation could make the construct unsafe. In practice it could be made to work however.

There is no need to even think about such perversions in your case; a pointer to a derived class can be implicitly cast to a base type. Just use your sample1*s as if they were mybase*s and don't have any casts at all.

Steve

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