C / C++ / MFC

Re: resizing bitmaps in vc++

4-Mar-07 22:36

Where you have written code for this ?
Overrid WM_ERASEBKGND and simply return TRUE from it.

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

resizing bitmaps in vc++

Susanta5784-Mar-07 22:13

Susanta578

4-Mar-07 22:13

hi i am susanta. I dont know how to resize a bitmap.

I want load a bitmap by clicking a toolbar button and then want to resize it as per my requirement. I m able to load the bitmap but dont know how to resize it...

If anybody knows anything how to do it please help me..

I will be thankful to him

Susanta Ku.Muni

Rajesh R Subramanian4-Mar-07 22:38

Rajesh R Subramanian

4-Mar-07 22:38

Susanta578 wrote:
hi i am susanta.

Oh I see.

Please go through this[^] article. It would help you.

He is no fool who gives what he cannot keep to gain what he cannot lose.
- Jim Elliot

Re: resizing bitmaps in vc++

Hamid_RT5-Mar-07 6:57

Hamid_RT

5-Mar-07 6:57

Susanta578 wrote:
I dont know how to resize a bitmap

A way is you can use of StretchBlt but quality of image will low

WhiteSky

Is my PC standalone or connected to Network

vibindia4-Mar-07 22:01

vibindia

4-Mar-07 22:01

Hi,

How can i find out that an PC is connected to Network or not.
The Idea that i have is to find its IP address.
If the IP is "127.0.0.1" then it's not connected to any network.
Is this idea correct.
Help me to get the wright Concept

WTF | :WTF:

VIBIN

"Fool's run away,where angle's fear to tread"

Sebastian Schneider4-Mar-07 22:39

Sebastian Schneider

4-Mar-07 22:39

Look at the back of your computer. The network card/interface usually has 2 LEDs. One usually means "connected", the other one indicates traffic. If both LEDs are dark, you most probably have a faulty network card.

If you have at least one steady light, you should fire up a command line ("cmd.exe") and display the IP configuration ("ipconfig"). Find your LAN-connection. Look at the IP-Address:

If the IP-address is in the range of 169.254.0.1 to 169.254.255.254 and the Subnet-Mask is 255.255.0.0:
Chances are your (Windows-)computer is configured to obtain an IP-address automatically, but could not reach the DHCP-Server. You are then not in the same network as any computer with a DHCP-assigned IP.

If the IP-address matches one of the following descriptions

10.*.*.*
192.168.*.*
172.16.*.* to 172.31.*.*

you probably have received an IP-address from an DHCP-server, which usually indicates that you are connected to a network.

If you seem to be connected to a network, examine the "Standard Gateway": If this is set to an address in your network, you probably have a problem with a firewall or router blocking your network traffic. If this is set to "nothing", DHCP configuration may have failed.

If everything seems to be ok this far, try pinging a known server in your network by IP-address and by hostname. If the ping at the address is successful, but pinging the hostname fails, your network's DNS-server (if any) might be botched up.

Try issuing "release" and/or "renew" commands with IP-Config (for the correct syntax, see "ipconfig /?".

For more info, try "http://www.windowsnetworking.com[^], http://support.microsoft.com/kb/164015[^], http://www.microsoft.com/technet/network/evaluate/technol/tcpipfund/tcpipfund_ch16.mspx[^], http://support.microsoft.com/kb/172218[^] and the Online Book "TCP/IP Fundamentals"[^].

Cheers,
Sebastian

--
Contra vim mortem non est medicamen in hortem.

Dmitry Khudorozhkov4-Mar-07 23:18

Dmitry Khudorozhkov

4-Mar-07 23:18

Look at the pre-last post at this page:

http://www.codeguru.com/forum/archive/index.php/t-103765.html

It contains the function you need.

-------------------------
Don't worry, be happy Blush | :O

)

Mark Salsbery5-Mar-07 6:51

Mark Salsbery

5-Mar-07 6:51

That function works? hmmm I have my doubts Smile | :)

"Great job, team. Head back to base for debriefing and cocktails."
(Spottswoode "Team America")

Dmitry Khudorozhkov5-Mar-07 7:05

Dmitry Khudorozhkov

5-Mar-07 7:05

It worked a bit ago, when I used it for some project...

Win32 contained a function named [CODE]IsInternetConnection()[/CODE], but I can't find in MSDN. Strange.

-------------------------
Don't worry, be happy Blush | :O

)

Mark Salsbery5-Mar-07 7:11

Mark Salsbery

5-Mar-07 7:11

It probably works but I don't believe it accurately indicated whether a machine is connected to
the internet though....maybe on a specifically configured network...

Actally I just reread it - in the context of dialup maybe it's ok. On a LAN though, I
don't think so.

I was just sceptical, that's all Smile | :)

The OP's question to me is petty vague. Does he want to know if there's a network adapter, if
the cable's plugged in, is there internet access...

Cheers!
Mark

"Great job, team. Head back to base for debriefing and cocktails."
(Spottswoode "Team America")

Dmitry Khudorozhkov5-Mar-07 7:19

Dmitry Khudorozhkov

5-Mar-07 7:19

You're right (to some extent).

If you're accessing internet through NAT/router, you won't get correct results.

But function works ok for direct connection... that was the question, I guess Smile | :)

Best regards,

Dmitry.

-------------------------
Don't worry, be happy Blush | :O

)

vector to std::string

Programm3r4-Mar-07 21:32

4-Mar-07 21:32

Hi all,

I have the following class, with structure and function:

class CIniFile
{
public:
	struct Record
	{
		string Comments;
		char Commented;
		string Section;
		string Key;
		string Value;
	};
        static vector<Record> GetSection(string SectionName, string FileName);

So now I call the function:

vector<CIniFile::Record> s = CIniFile::GetSection("Client Files",IniFileName);

My question is how can convert s to a string ?? Or is there another way of getting it to a string or char*.
Many Thanx
Regards,

The only programmers that are better than C programmers are those who code in 1's and 0's..... Smile | :)

Programm3r
My Blog: ^_^

prasad_som4-Mar-07 21:40

4-Mar-07 21:40

Programm3r wrote:
My question is how can convert s to a string ??

Can you explain a little clearer ?
Do you want to know , how to access members of Record in the class ?

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

Programm3r4-Mar-07 21:50

4-Mar-07 21:50

prasad_som wrote:
Do you want to know , how to access members of Record in the class ?

Yes, but I think I solved the problem thanx prasad_som.... Cool | :cool:

The only programmers that are better than C programmers are those who code in 1's and 0's..... Smile | :)

Programm3r
My Blog: ^_^

prasad_som4-Mar-07 21:51

4-Mar-07 21:51

Programm3r wrote:
problem

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

Programm3r4-Mar-07 21:40

4-Mar-07 21:40

Sorry stupid question ...

std::string v = s[0].Value;

Thanx anyway .... D'Oh! | :doh:

Regards,

The only programmers that are better than C programmers are those who code in 1's and 0's..... Smile | :)

Programm3r
My Blog: ^_^

error LNK2019

Programm3r4-Mar-07 23:35

4-Mar-07 23:35

Hi all,

When I call the function in my dll, I receive the following error:

Error 39 error LNK2019: unresolved external symbol "public: static class std::vector<struct cinifile::record,class="" std::allocator<struct="" cinifile::record=""> > __cdecl CIniFile::GetSection(class std::basic_string<char,struct std::char_traits<char="">,class std::allocator<char> >,class std::basic_string<char,struct std::char_traits<char="">,class std::allocator<char> >)" (?GetSection@CIniFile@@SA?AV?$vector@URecord@CIniFile@@V?$allocator@URecord@CIniFile@@@std@@@std@@V?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@3@0@Z) referenced in function "public: bool __thiscall TCP32CLIENT::setApplicationParameters(void)" (?setApplicationParameters@TCP32CLIENT@@QAE_NXZ) TCP32Client.obj

What am I doing wrong ?? Confused | :confused:

Many thanx
Regards,

The only programmers that are better than C programmers are those who code in 1's and 0's..... Smile | :)

Programm3r
My Blog: ^_^

Re: error LNK2019

Programm3r4-Mar-07 23:58

4-Mar-07 23:58

It seems like I forgot to export the function in the other dll (in the def file), but it's working now ....

Thanx anyway
Regards,

The only programmers that are better than C programmers are those who code in 1's and 0's..... Smile | :)

Programm3r
My Blog: ^_^

Re: error LNK2019

prasad_som4-Mar-07 23:58

4-Mar-07 23:58

Do you mean , this function is in dll and you are using it ?
You need to link its .lib in to client lib,. Have you dont this ?

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

Re: error LNK2019

Programm3r5-Mar-07 0:10

5-Mar-07 0:10

Yes, I have already link the lib file. It's actually one dll calling another, but in the one dll I forgot to export one of the functions. When I changed the dll so that it exports the function everything seems to be working. But thanx alot for your input prasad.

Regards,

The only programmers that are better than C programmers are those who code in 1's and 0's..... Smile | :)

Programm3r
My Blog: ^_^

corruption of the heap

Programm3r5-Mar-07 0:41

Re: corruption of the heap

5-Mar-07 0:41

Ok, it's like problems are following me today ....
I keep receiving a "corruption of the heap" error.
dbgdel.cpp

_free_dbg( pUserData, pHead->nBlockUse );

pBlockHeaderNext = 0x003a6be0 {pBlockHeaderNext=0x003a3718 pBlockHeaderPrev=0x003a6600 szFileName=0x00000000 <bad ptr=""> ...}
pBlockHeaderPrev = 0x00000000 {pBlockHeaderNext=??? pBlockHeaderPrev=??? szFileName=??? ...}
gap = 0x003a661c "ýýýýtransactions.txt"

Disassembly

_free_dbg( pUserData, pHead->nBlockUse );
10040BE7 mov edx,dword ptr [ebp-1Ch]
10040BEA mov eax,dword ptr [edx+14h]
10040BED push eax
10040BEE mov ecx,dword ptr [ebp+8]
10040BF1 push ecx
10040BF2 call @ILT+4355(__free_dbg) (10034108h)
10040BF7 add esp,8

I know there could be alot of this that might cause this, but what would be the most obvious??

Thanx again .... Sigh | :sigh:

Regards,

The only programmers that are better than C programmers are those who code in 1's and 0's..... Smile | :)

Programm3r
My Blog: ^_^

prasad_som5-Mar-07 1:00

Re: corruption of the heap [MOD]

5-Mar-07 1:00

Possibley you are deleting corrupted memory. Actually, call stack should show you where it is occuring.

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

Programm3r5-Mar-07 1:15