Re: create file directly - C / C++ / MFC Discussion Boards

Bindas Samanta17-Feb-09 4:14

17-Feb-09 4:14

hello
please help about adaptive niblack binarization algorithm , so thai i can write the c++ code according your algorithm.

Thnking you

Re: adaptive niblack algorithm

Stuart Dootson17-Feb-09 4:31

Stuart Dootson

17-Feb-09 4:31

re-re-re-re-REPOST[^]!!!! And particularly blatant, as your previous post is still on the first page of the forum.

Try doing some research for yourself - a little Googling and some use of Citeseer[^] (the best search engine for academic papers, in my experience) leads me to believe the reference you want is 'Wayne Niblack, An Introduction to Digital Image Processing, pp. 115–116, Prentice Hall, 1986.'

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

Re: adaptive niblack algorithm

SandipG 17-Feb-09 4:54

SandipG

17-Feb-09 4:54

May be again you can paraphrase Einstein [^] Big Grin | :-D

Regards,
Sandip.

Re: adaptive niblack algorithm

Stuart Dootson17-Feb-09 6:02

Stuart Dootson

17-Feb-09 6:02

I wouldn't want to be accused of reposting Big Grin | :-D

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

Re: adaptive niblack algorithm

CPallini17-Feb-09 22:07

CPallini

17-Feb-09 22:07

Stuart Dootson wrote:
re-re-re-re-REPOST[^]!!!!

Nope: this time is adaptive.
Big Grin | :-D

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke

[My articles]

create file directly

josip cagalj17-Feb-09 2:04

josip cagalj

17-Feb-09 2:04

In my app I need to write something in some place on PC.
In my code I call 'std::ofstream' but first I have to make sure that file exist.
If file doesn't exist I need to make an empty file.
Now my question is, after I find out that file doesn't exist can I create it only by specifying full path-name not worrying if some of sub folders exist. It needs to recreate the whole path.
To be more specific the location is 'C:\....\Aplication Data\..".
How to achieve this?
Thanks

Re: create file directly

«_Superman_»17-Feb-09 2:26

«_Superman_»

17-Feb-09 2:26

Use SHCreateDirectory to create the entire path before creating the file.

«_Superman_»

Re: create file directly

Stuart Dootson17-Feb-09 2:44

Stuart Dootson

17-Feb-09 2:44

josip cagalj wrote:
Now my question is, after I find out that file doesn't exist can I create it only by specifying full path-name not worrying if some of sub folders exist. It needs to recreate the whole path.

You'll have to do that separately from the file create.

And even the functions you could use to create a directory (_mkdir or CreateDirectory) will only create a directory if its parent exists. So you're going to have to write something that recurses through a path, creating directories that don't exist in teh appropriate order.

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

Re: create file directly

josip cagalj17-Feb-09 3:23

josip cagalj

17-Feb-09 3:23

Thanks to all of you!

Re: create file directly

«_Superman_»17-Feb-09 4:05

«_Superman_»

17-Feb-09 4:05

Stuart Dootson wrote:
And even the functions you could use to create a directory (_mkdir or CreateDirectory) will only create a directory if its parent exists.

SHCreateDirectory will create the entire path for you.

«_Superman_»

Re: create file directly

Stuart Dootson17-Feb-09 4:15

Stuart Dootson

17-Feb-09 4:15

Thanks - I found that just as I'd pressed the 'Post Message' button and was going to amend my post - but then found you'd beaten me to it!

I was looking in the shlwapi[^] docs for it. Silly me Smile | :)

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

Interface not responding

MsmVc17-Feb-09 1:32

MsmVc

17-Feb-09 1:32

Hi All

Dialog based application not responding when function is call.Function is define in header file.Can any one give me advice how can i solve it?Plz help me

Re: Interface not responding

Cedric Moonen17-Feb-09 1:40

Cedric Moonen

17-Feb-09 1:40

If your function is doing a lenghty operation, then it is normal that your GUI is frozen: your app is not able to process windows messages anymore (so that means not able to respond to events, not repainting itself, ...). You have to execute your function in a separate thread.
Here[^] is an excelent article that will help you understanding everything you need to know.

Cédric Moonen
Software developer

Charting control [v1.5]
OpenGL game tutorial in C++

Re: Interface not responding

MsmVc17-Feb-09 1:51

MsmVc

17-Feb-09 1:51

Thank for nice Article.But I need one more advice forum.Function is define in header file and all thing is doing there.So how can i use there worker thread?Plz help me

Re: Interface not responding

Cedric Moonen17-Feb-09 2:07

Cedric Moonen

17-Feb-09 2:07

You have to create your thread in your dialog class, just before calling the function. You don't have to change your function at all. But I think things will be much clearer once you have read the full article.

Cédric Moonen
Software developer

Charting control [v1.5]
OpenGL game tutorial in C++

Resizing frame

baerten17-Feb-09 0:51

baerten

17-Feb-09 0:51

Hello everybody,

i got a strange problem.
If i resize a frame (within a CFormView) all works great.
Till i replace the View with another one (the frame keeps)
All Size-Events are correctly send to the new active view.
But if I size the frame fast, the view will (sometimes) not get the newest Size-Event.
Then, a ugly mistake like this is provoked :

http://img5.imageshack.us/my.php?image=fehleruu2.jpg[^]

I tested this view already as a initial view (without changing the view into the frame ) in this
case it works also without mistakes.
Only if I replace the initial view with another one, then the second view resizes not correctly.

Also i tested if the initial view is also resized (so that wrongly 2 views are sized) but i use a Hidden-Flag to step out the OnSize-Function (but the Size-Event is send anyway to it Frown | :(

)

Big thanks for help Smile | :)

Re: Resizing frame

Stuart Dootson17-Feb-09 1:03

Stuart Dootson

17-Feb-09 1:03

How about handling WM_EXITSIZEMOVE[^] rather than/as well as WM_SIZE?

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

Re: Resizing frame

baerten17-Feb-09 2:29

baerten

17-Feb-09 2:29

Yes, it's a last possibility to "resolve" it,
but if the user holds down the Mouse-Key (for example to continue the sizing) it
seems pretty ugly D'Oh! | :doh:

But thanks for your answer Smile | :)

How to access child window controls?

Abhijit D. Babar17-Feb-09 0:35

Abhijit D. Babar

17-Feb-09 0:35

Hello all,
In my project I am creating a SDI application without Document/View architecture in MFC(Visaul C++ 2008).
Now in it, I am creating a child window using "Create()" method with window style "WS_CHILD" and i am calling this "Create()" method from "OnCreate()" of CMainFrame class.For this newly created child window I have created a new class.Now on this new child window I have added some controls like edit boxes, buttons and these controls are also created by "Create()" method and with "WS_CHILD" style.

Now my actual problem is that when I run the application, child window gets created and I can see the controls added on the child window also but I can not access these controls means these controls are disabled. Can anyone tell how to enable or access these controls on child window.

Thanks and Regards,

Abhijit

Re: How to access child window controls?

Stuart Dootson17-Feb-09 0:57

Stuart Dootson

17-Feb-09 0:57

re-re-re-re-REPOST!!!!

If you didn't get any responses a week ago, how do you expect to get any this week when you have provided no extra information (for example - what classes were used to create your child windows - how about posting some code to illustrate what you're doing!

To paraphrase Einstein, "The definition of insanity is posting the same thing over and over again and expecting different results"

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

use GdiPlus :: Font to SetFont of a static text control or convert GdiPlus :: Font to CFont

_T("No name")17-Feb-09 0:33

_T("No name")

17-Feb-09 0:33

i want to setFont of a CStatic text control. i have GdiPlus::Font i want to use that.. or it will do if i will be able to convert it to same CFont.

any help

thanx

Re: use GdiPlus :: Font to SetFont of a static text control or convert GdiPlus :: Font to CFont [modified]

Nuri Ismail17-Feb-09 3:17

Nuri Ismail

17-Feb-09 3:17

Here is some code for the conversion:

        // You need a Graphics object for the conversion.
        // If you have CDC or Graphics object, use them.
        // If you don't such an objects below is a sample code for their creation
        CDC* pDC = CDC::FromHandle(::GetDC(NULL));
        Gdiplus::Graphics g(pDC->m_hDC);
       
        // Here is the GDI+ Font
        Gdiplus::Font gdipFont(L"Arial", (REAL)8);
 	
        // We will use a LOGFONT structure for the conversion
        LOGFONT lf;
        
        // Get the LOGFONT from the GDI+ Font
#ifdef _UNICODE
	gdipFont.GetLogFontW(&g, &lf);
#else
	gdipFont.GetLogFontA(&g, &lf);
#endif
	
        // Create the font object
	CFont font;
	font.CreateFontIndirect(&lf);

Hope this helps! Smile | :)

modified on Tuesday, February 17, 2009 9:25 AM

User account that connect to a shared folder.

Green Fuze16-Feb-09 23:47

Green Fuze

16-Feb-09 23:47

Hey everybody

I am REALLY stuck with this one! Sigh | :sigh:

I'll describe the problem with a scenario:
(1) Log to computer with user "A".
(2) start->run-> "\\somecomp\somedir\"
(3) user "A" has no access to this "\\somecomp\somedir\", thus windows pops up a window that allows user "A" to log-in to "\\somecomp\somedir\" as a different user.
(4) user "A" enters user/pass of "P" that has permission to the "\\somecomp\somedir\".

The question is:
How can I tell (from user "A"'s computer) that he uses user "P" to get to "\\somecomp\somedir\" ???? Confused | :confused:

Help... please... Smile | :)

Thanks!

Problems with std::ofstream function on std::ios::binary parameter

josip cagalj16-Feb-09 23:35

josip cagalj

16-Feb-09 23:35

Hi,
in my app I have the following code:

std::ofstream f(sPath.GetBuffer(0), std::ios::binary);
f.write((const char *) pBytes, dwSize);
f.close();

I also include 'iostream.h' #include <iostream.h></iostream.h>
I'm getting error:
-error C2027: use of undefined type 'basic_ios<char,struct> >'
-error C2065: 'binary' : undeclared identifier
-error C2079: 'f' uses undefined class 'basic_ofstream<char,struct> >'
-error C2078: too many initializers
-error C2228: left of '.write' must have class/struct/union type
-error C2228: left of '.close' must have class/struct/union type

Help?
Thanks!

P.S. Using vc++ 6 on WinXP SP3

Re: Problems with std::ofstream function on std::ios::binary parameter

Cedric Moonen16-Feb-09 23:41

Cedric Moonen

16-Feb-09 23:41

josip cagalj wrote:
I also include 'iostream.h'

You should include <fstream> also. And iostream.h is deprecated, you should include <iostream> instead (without the .h).

Cédric Moonen
Software developer

Charting control [v1.5]
OpenGL game tutorial in C++

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.