C / C++ / MFC

Lambry18-Sep-06 6:27

Lambry

18-Sep-06 6:27

Hi WalderMort !

Your question is very interesting. I have the same problem with my application.

One of the possible solution is to define class as global, and then to use directive "extern" to get access to his members from any other part of your application.

I am using this method, and it work just fine.

ThatsAlok18-Sep-06 18:12

ThatsAlok

18-Sep-06 18:12

Lambry wrote:
One of the possible solution is to define class as global, and then to use directive "extern" to get access to his members from any other part of your application.

you can't share data between two exe.. using that method!

"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
Support CRY- Child Relief and You

Lambry19-Sep-06 0:08

Lambry

19-Sep-06 0:08

Well ... Alok Gupta, may be I understand question of WalderMort in deferent way, but tell me where in the sentences of that post is talking about different *.exe's ?

ThatsAlok19-Sep-06 0:48

ThatsAlok

19-Sep-06 0:48

Lambry wrote:

Well ... Alok Gupta, may be I understand question of WalderMort in deferent way, but tell me where in the sentences of that post is talking about different *.exe's ?

Well it seems.. you get upset, after i pointed something in your comment.. anyways this link might help you....
http://www.codeproject.com/script/comments/forums.asp?msg=1673530&forumid=1647#xx1673530xx[^]

"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
Support CRY- Child Relief and You

Lambry19-Sep-06 4:06

Lambry

19-Sep-06 4:06

Thank You Alok Gupta !

In this case I only can tell:
- How to help to person (like WalderMort) that even cant ask a question in a right way? I am sorry that I lost my time, for nothing. And in addition your time Alok, and lot of space here in Code project. Mad | :mad:

ThatsAlok19-Sep-06 19:07

ThatsAlok

19-Sep-06 19:07

Lambry wrote:
How to help to person (like WalderMort) that even cant ask a question in a right way?

actually.. here knowledge of langauge is problem... actualy people sometime fails to express there problem.. that doesn't mean they are good programmer.. you don't need to be sorry.. actually i posted after reading evrybody comments.. there fore.. might be i commented over your statement.. anyways i am sorry.. if i am rude!

"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
Support CRY- Child Relief and You

Problem with Doc /View

ramanand_bulusu18-Sep-06 4:24

ramanand_bulusu

18-Sep-06 4:24

hi,
i am working as a VC++ devloper.i want to write a method in the doc .which will call the method in the view.can i do like this?plz help me.

Zac Howland18-Sep-06 4:45

Zac Howland

18-Sep-06 4:45

I can almost guarantee this is not how you want to organize this. What exactly are you trying to accomplish (that is, what is being done to the View that you think you want the Document to initiate it?)

If you decide to become a software engineer, you are signing up to have a 1/2" piece of silicon tell you exactly how stupid you really are for 8 hours a day, 5 days a week

Zac

ThatsAlok18-Sep-06 5:06

ThatsAlok

18-Sep-06 5:06

ramanand_bulusu wrote:
ant to write a method in the doc .which will call the method in the view.can i do like this?plz help me.

GetDocument api will work!

"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
Support CRY- Child Relief and You

tanvon malik18-Sep-06 7:24

tanvon malik

18-Sep-06 7:24

ThatsAlok wrote:
GetDocument api will work!

there is no such API called GetDocument.
I again confirmed it from MSDN for my surety.
It is a member function of CView class

Tanvon
the brain behind ...

I Blog here

ThatsAlok18-Sep-06 18:11

ThatsAlok

18-Sep-06 18:11

Tanvon wrote:
there is no such API called GetDocument.
I again confirmed it from MSDN for my surety.
It is a member function of CView class

Isn't i know that.... GetDocument itself imply that it will retrive the pointer to the document class associated with view... isn't are anybody using WIn32 to simulate DOC-View architecture....i believe no..
and tell me what is MFC?.. a thin wrapper over win32!.

here what actual coding of GetDocument gives

_AFXWIN_INLINE CDocument* CView::GetDocument() const
    { ASSERT(this != NULL); return m_pDocument; }

Actually many people here doesn't think what is api and what is funtion....
like for Example if you use FindWindow() it is api... and CWnd::FindWindow() it is function..
but if you refer them ... you will use this api or that api... what is api at end a function which providing
application programming interface

"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
Support CRY- Child Relief and You

tanvon malik19-Sep-06 1:21

tanvon malik

19-Sep-06 1:21

Actyally I have also some unix, Linux background.
And another matter is that I also studied many operatin systems.
And that all things tell, that an API is an
interface which an operating system provides to the outside
world. So in that context every direct function in an operating system
is an API. Actually an API provides an interface for applications programs.
And that way application programs can interact with the operating system.
And libraries comes at a second stage. These libraries also provides us ways to
interact with them, they sometimes also called APIs, but it is not an
approperiate word for that purpose.

Tanvon
the brain behind ...

I Blog here

Using GDI+ load from Buffer [modified]

tanvon malik18-Sep-06 7:16

tanvon malik

18-Sep-06 7:16

this is not a good practice, You should not call a particular view from a document, because it makes document to depend on a specific view, And document view articture tells us that we may have multiple view,and documents so we should not make decument to depend on a specific view.

You can do so
1: call UpdateAllViews() from your document, with a hint.
2: this will call OnUpdate() in all views (if more than one)
3: in OnUpdate in your view class watch that specific hint and call that view class method you want to call

Tanvon
the brain behind ...

I Blog here

Partition Tabel

EpicYeti18-Sep-06 4:19

EpicYeti

18-Sep-06 4:19

Hi,

I have a win98 system and I am in need of being able to read the partition table. I'm not sure if this is specificaly a c++ question, but I am writing the code in c++. I've looked up DeviceIoControl(...), which has a IOCTL_DISK_GET_PARTITION_INFO_EX control code. That would be awesome, except it is only supported in win2k/XP systems.

In win98 you have to use VxD and DOS interupt functions with DeviceIoControl(...). Again that would be fine, but I haven't been able to find an old dos int. that will give me the partition table. Does anyone know of one, or know a better way to do this? Thanks.

-(not so epic)yeti

Re: Partition Tabel

Steve S18-Sep-06 5:34

Steve S

18-Sep-06 5:34

Hmm. From memory,
Int 13h is the Disk I/O one, and you'd want the first sector of the relevant disk, which should be where the MBR and partition table is.

ax = 0x0201
cx = 0x0001
dx = 0x0080 (1st HDD, 2nd = 0x81 etc)
es:bx is data buffer

CF (carry) set if an error occurred.

Disk sector should be 512 bytes.

Win9x might need you to 'lock' the volume using an Int 21h call, but I can't remember the details, since all this is so old.... Smile | :)

Steve S
Developer for hire

SakoEBS18-Sep-06 4:17

SakoEBS

18-Sep-06 4:17

I'm writing an application that grabs images from an IP Camera. These images are in the JPEG format.

I want to be able to display these images in an MFC dialog. It currently works using iPicture to load the buffered images and display them.

I want to try using GDI+. I noticed that GDI+ can load an image from a file. However, I can not find any references on how to do this with a buffer. Is this possible?

-- modified at 10:34 Monday 18th September, 2006

I forgot to add that I'm storing the image in a Byte Buffer.

Re: Using GDI+ load from Buffer

bob1697218-Sep-06 5:10

bob16972

18-Sep-06 5:10

Bitmap::FromStream works nicely

Look into CreateStreamOnHGlobal for how to get the BYTE buffer into a stream object (IStream interface)

Re: Using GDI+ load from Buffer

SakoEBS18-Sep-06 6:17

SakoEBS

18-Sep-06 6:17

Thanks!

caption bar

radhika2818-Sep-06 4:12

radhika28

18-Sep-06 4:12

hi,
I an sdi application how can we change the title of the application in the caption bar.

Radhika.

Re: caption bar [modified]

toxcct18-Sep-06 4:14

toxcct

18-Sep-06 4:14

::AfxGetMainWnd()->SetWindowText(_T("new caption"));

TOXCCT >>> GEII power

[VisualCalc 3.0 updated ][Flags Beginner's Guide new! ]

radhika2818-Sep-06 4:17

radhika28

18-Sep-06 4:17

hi, where should we code that statement.

Thanks,
Radhika.

toxcct18-Sep-06 4:19

toxcct

18-Sep-06 4:19

radhika28 wrote:
hi, where should we code that statement.

where you want to change the application caption...

TOXCCT >>> GEII power

[VisualCalc 3.0 updated ][Flags Beginner's Guide new! ]

Nish Nishant18-Sep-06 4:20

Nish Nishant

18-Sep-06 4:20

toxcct wrote:
::AfxGetInstanceHandle()->SetWindowText(_T("new caption"));

Did you mean AfxGetMainWnd, Tox?

Regards,
Nish

Nish’s thoughts on MFC, C++/CLI and .NET (my blog)
Currently working on C++/CLI in Action for Manning Publications.
Also visit the Ultimate Toolbox blog (New)

toxcct18-Sep-06 4:22

toxcct

18-Sep-06 4:22

oops

modified ! thanks a bunch for the correction

TOXCCT >>> GEII power

[VisualCalc 3.0 updated ][Flags Beginner's Guide new! ]