C / C++ / MFC

Re: Annoying error for me

4-May-09 6:12

Are you sure you're including the correct headers?

David Crow4-May-09 7:59

David Crow

4-May-09 7:59

CodingLover wrote:
Any idea why it's happen there in the code?

Are you including Ntsecapi.h?

"Old age is like a bank account. You withdraw later in life what you have deposited along the way." - Unknown

"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

Convert a in_addr to an IPAddr

I am BATMAN4-May-09 5:30

4-May-09 5:30

In my code I'm trying to call SendARP to get the MAC address of a computer on the local network. I have their IP address in the in_addr data format, but SendARP takes it as an IPAddr.

I looked on MSDN and they don't offer any explicit ways to convert between the two and google searches so far have not proven fruitful.

Anyone done this before?

led mike4-May-09 7:24

led mike

4-May-09 7:24

I am BATMAN wrote:
In my code I'm trying to call SendARP to get the MAC address of a computer on the local network. I have their IP address in the in_addr data format, but SendARP takes it as an IPAddr.

I looked on MSDN and they don't offer any explicit ways to convert between the two and google searches so far have not proven fruitful.

Anyone done this before?

Have you looked at the two definitions? IPAddr and in_addr?

I am BATMAN4-May-09 11:05

4-May-09 11:05

yes, that was sort of vague...are you talking about how it says you can cast an IPAddr to an in_addr? I tried casting the other direction (in_addr to IPAddr) but it throws errors.

Forgive me, this is basically the beginning of my windows C++ programming, up until now it's all been command line linux code. Is there a special way to cast with the win API or something?

led mike4-May-09 11:22

led mike

4-May-09 11:22

I am BATMAN wrote:
Forgive me, this is basically the beginning of my windows C++ programming, up until now it's all been command line linux code. Is there a special way to cast with the win API or something?

Then you need to study beginners material of the language since you need to understand types, structures and unions as well as many, many other things. Trying to explain them to you in a forum is not appropriate.

typedef struct in_addr {
        union {
                struct { UCHAR s_b1,s_b2,s_b3,s_b4; } S_un_b;
                struct { USHORT s_w1,s_w2; } S_un_w;
                ULONG S_addr;
        } S_un;

The S_addr member of the union is the same type as IPAddr.

//
// IP type definitions.
//
typedef ULONG IPAddr;       // An IP address.

I am BATMAN4-May-09 11:20

Cross posting pile of garbage

4-May-09 11:20

Oh ok, it worked when I saved the variable as a IPAddr the same way I was originally saving the in_addr instead of trying to cast between the two. Thanks anyways

wmi Win32_Service

Jack Rong4-May-09 5:21

Jack Rong

4-May-09 5:21

Anybody has idea how to start specific service in remote using WMI C++ API.

Jack Rong

led mike4-May-09 9:22

led mike

4-May-09 9:22

Get the frak off of this site you lazy pile of dung.

Need to change the Default Font of Control in my win32 code

zakkas24834-May-09 3:53

zakkas2483

4-May-09 3:53

Hello all,

I working on one win32 application. I need to change the font of my controls. This can be done by sending WM_SETFONT message to the control. but it need hFont as WPARAM. and to create hFont we need CreateFont() function but it is only available in MFC not in win32. so what is alternative of this.

Re: Need to change the Default Font of Control in my win32 code

Code-o-mat4-May-09 4:04

Code-o-mat

4-May-09 4:04

I believe you are wrong with that, CreateFont, CreateFontIndirect and such API calls can be used without MFC.

> The problem with computers is that they do what you tell them to do and not what you want them to do. <
> Life: great graphics, but the gameplay sux. <

Re: Need to change the Default Font of Control in my win32 code

David Crow4-May-09 4:07

David Crow

4-May-09 4:07

zakkas2483 wrote:
...to create hFont we need CreateFont() function but it is only available in MFC not in win32. so what is alternative of this.

See here.

Re: Need to change the Default Font of Control in my win32 code

zakkas24834-May-09 4:19

zakkas2483

4-May-09 4:19

I m getting Error Message "CreateFont: identifier not found".

Re: Need to change the Default Font of Control in my win32 code

I am BATMAN4-May-09 5:31

Re: Subclassing CFileDialog

4-May-09 5:31

Sounds like you're not including the right files. Check the dependencies for that function.

Subclassing CFileDialog

DougVC4-May-09 3:34

DougVC

4-May-09 3:34

I have derived a subclass from CFileDialog. I would like to check that certain conditions are correct before the dialog is closed. How can I intercept the message to close the dialog? My derived dialog class includes an OnDestroy(), but the dialog is already closed before it is reached.

David Crow4-May-09 3:42

David Crow

4-May-09 3:42

No need to derive from CFileDialog, just supply a hook procedure and set the lpfnHook member. See here for more.

c program in linux

nuttynibbles4-May-09 3:20

nuttynibbles

4-May-09 3:20

hi, i developed c program in windows. how do i make them work in linux environment?? tks..

Rajesh R Subramanian4-May-09 3:24

Rajesh R Subramanian

4-May-09 3:24

Compile it in [insert OS name here] and get the binary for that OS built.

It is a crappy thing, but it's life -^ Carlo Pallini

Cedric Moonen4-May-09 3:49

Cedric Moonen

4-May-09 3:49

In addition to what Rajesh said: this is only possible if you are only using OS independant features (so, no UI for instance). If you are using the Win32 API or the MFC, forget about it (although there are libraries which can be used in order to develop cross-platform UIs).

Cédric Moonen
Software developer

Charting control [v2.0]
OpenGL game tutorial in C++

nuttynibbles4-May-09 6:57

nuttynibbles

4-May-09 6:57

okay.. i just need to do is write a program and compile it without UI.. but because im running on Windows, how do I ensure it run on linux?