Please explain the reason of the error - C / C++ / MFC Discussion Boards

Re: retrieve only values from ini file...

David Crow12-Mar-09 6:36

David Crow

12-Mar-09 6:36

See here.

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How to Load Image from url?

SIJUTHOMASP12-Mar-09 0:53

SIJUTHOMASP

12-Mar-09 0:53

HI,

Is there any way to load image from a url. I have one activex control which has been used in the web application and the application will pass an UNC path to the control. From that path, the control will load the image. The activex control has been written in vc++/MFC.

I need to load the image using the url. For eg: http://site/test.tiff. I have modified the code of the activex control and given the url, then it was failing with the error "assertion failure". My confusion is this, when I tried to open the image as url through IE, it could open, but when it is passed to the program it couldn't load.

Will you please help and provide me the way if it is possible. Is there any way to load the image instead of passing the path and directly passing the imgage itself. Any idea why it couldn't load the image from url and only it is loading from UNC path.

Thanks in Advance,
Rahul.

Re: How to Load Image from url?

sashoalm12-Mar-09 5:45

sashoalm

12-Mar-09 5:45

Is this control supposed to be able to load images from the internet? Is this active x control an instance of IE?

I think you ought to download the file to disk and then open it.

There is sufficient light for those who desire to see, and there is sufficient darkness for those of a contrary disposition.
Blaise Pascal

Re: How to Load Image from url?

SIJUTHOMASP12-Mar-09 6:06

SIJUTHOMASP

12-Mar-09 6:06

Hi Sashoalm,

Thanks much for your reply. The control could load images from any unc path or local path (\\server\test\ab.bmp or c:\projects\test\ab.bmp). This is not an instance of IE.

The image files are available in the server location. But if we store that to the client, the client machine will have all the files.

My thought was like if the control could load the image from any virtual folder or url (server) then it would be much helpful. I have seen that the media player ,irfanview etc could able to load the image url in it..

Hence I believe it will be possible with the activex control written in vc++..Really appreciate if can show any way to do this.

Thanks,
Rahul.

SoftwareDeveloper(.NET)

Re: How to Load Image from url?

Hamid_RT12-Mar-09 20:09

Hamid_RT

12-Mar-09 20:09

Is this[^] helpful?

Of one Essence is the human race
thus has Creation put the base
One Limb impacted is sufficient
For all Others to feel the Mace
(Saadi )

Re: How to Load Image from url?

SIJUTHOMASP16-Mar-09 0:42

SIJUTHOMASP

16-Mar-09 0:42

Hi Hamid,

Thanks much for your reply..I will check this and let you know if that example works for me.

Thanks,
Rahul.

SoftwareDeveloper(.NET)

Re: How to Load Image from url?

Hamid_RT16-Mar-09 3:54

Hamid_RT

16-Mar-09 3:54

If my answer was helpul you can give me 5. Big Grin | :-D

Of one Essence is the human race
thus has Creation put the base
One Limb impacted is sufficient
For all Others to feel the Mace
(Saadi )

Please explain the reason of the error

_anil_12-Mar-09 0:23

_anil_

12-Mar-09 0:23

Please explain why the error

<br />
class base <br />
{<br />
public:<br />
	void fun1()<br />
	{<br />
	}<br />
<br />
	virtual void call()<br />
	{<br />
	}<br />
};<br />
<br />
class derive:public base<br />
{<br />
public:<br />
	void call()<br />
	{<br />
		fun1();  // ERROR- function does not take 0 arguments<br />
	}<br />
<br />
	void fun1(int i)<br />
	{<br />
<br />
	}<br />
}<br />

Regards
Anil

Re: Please explain the reason of the error

Stuart Dootson12-Mar-09 0:29

Stuart Dootson

12-Mar-09 0:29

Because fun1 in derive hides the definition of fun1 in base. Use base::fun1(), like this:

class base 
{
public:
void fun1()
{
}

virtual void call()
{
}
};

class derive:public base
{
public:
void call()
{
base::fun1(); // ERROR- function does not take 0 arguments
}

void fun1(int i)
{

}
};

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

Re: Please explain the reason of the error

_anil_12-Mar-09 0:34

_anil_

12-Mar-09 0:34

Why the base::fun1() is needed ?

If the fun1(int i) is not there then there is no error.
Once the overload function is declare its giving the error.

Regards
Anil

Re: Please explain the reason of the error

Stuart Dootson12-Mar-09 0:38

Stuart Dootson

12-Mar-09 0:38

_anil_ wrote:
Why the base::fun1() is needed ?

If the fun1(int i) is not there then there is no error.
Once the overload function is declare its giving the error.

Did you even read my answer? To repeat what I said - the error's because fun1 in derive hides the definition of fun1 in base. It (fun1 in derive) is not an overload, because it's defined in a different scope than fun1 in base.

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

Re: Please explain the reason of the error

_anil_12-Mar-09 0:48

_anil_

12-Mar-09 0:48

Ok Got it. Thanks.

Regards
Anil

Re: Please explain the reason of the error

CPallini12-Mar-09 0:40

CPallini

12-Mar-09 0:40

With your fun1(int) in derived class you're hiding the base class fun1. See here [^].
Smile | :)

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]

how to trap sound using cpp.

Markandaiya Harsh11-Mar-09 23:40

Markandaiya Harsh

11-Mar-09 23:40

hi I want to make a project on c++ dat will give the beats of tabla in fixed "taala" and "laya" can anyone help me by teachung me how to trap sound using cpp??

Re: how to trap sound using cpp.

Cedric Moonen11-Mar-09 23:57

Cedric Moonen

11-Mar-09 23:57

Markandaiya Harsh wrote:
I want to make a project on c++ dat will give the beats of tabla in fixed "taala" and "laya"

I'm sorry but I don't understand anything of the second part of your sentence. What is a tabla, a talla and a laya ?
Please, when asking a question keep in mind that we don't have any idea of what you are trying to do. So, try to be as clear as possible when asking your question.

Cédric Moonen
Software developer

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

Re: how to trap sound using cpp.

Jijo.Raj12-Mar-09 0:03

Jijo.Raj

12-Mar-09 0:03

Hi Cedric,

Tabla[^] is an Indian musical instrument.

Taala and Laya are related with music. To be precise,

taala: the beat set for a particular composition (a measure of time). taaLas have cycles of a defined number of beats and rarely change within a song.
laya : The term for tempo in Indian music.

Now please answer the guy. Big Grin | :-D

Regards,
Jijo.

_____________________________________________________

http://weseetips.com[^] Visual C++ tips and tricks. Updated daily.

fuzzy controller in AVR ATMega16

adamharika11-Mar-09 22:26

adamharika

11-Mar-09 22:26

Hellow,,,
any one know how to make a fuzzy logic code in C and inject it to an AVR ATMega16 mico controller???
thanx lot Smile | :)

Re: fuzzy controller in AVR ATMega16

CPallini11-Mar-09 22:48

CPallini

11-Mar-09 22:48

Full code at www.cpallini.free.fuzzy.avr.codez.com.

Or you may prefer to read forum guidelines [^], before posting .

Smile | :)

Re: fuzzy controller in AVR ATMega16

SandipG 12-Mar-09 0:11

SandipG

12-Mar-09 0:11

CPallini wrote:
Full code at www.cpallini.free.fuzzy.avr.codez.com.

Sir ,Link does not work Big Grin | :-D

Please its really urgentzzzzz sir.. Big Grin | :-D

Regards,
Sandip.

Re: fuzzy controller in AVR ATMega16

zahra-6519-Jul-13 9:38

zahra-65

19-Jul-13 9:38

hi..
I want to write it by codevision ...

can any one help me??? D'Oh! | :doh:

CRichEditCtrl::StreamOut property

amit.code11-Mar-09 22:22

amit.code

11-Mar-09 22:22

Hi .. I am using CRichEditCtrl::StreamOut function to get the rtf of richedit control in cstring variable, but its not returning multibyte character(chinese, korean)which i entered as text in richedit control. Is there any flag needs to be set to get this values.
Thanks

amit

Re: CRichEditCtrl::StreamOut property

Stuart Dootson12-Mar-09 0:26

Stuart Dootson

12-Mar-09 0:26

This worked for me:

DWORD __stdcall EditStreamCallback(DWORD_PTR dwCookie, LPBYTE pbBuff, LONG cb, LONG *pcb)
{
   LPCWSTR a = LPCWSTR(pbBuff);
   // Manipulate a
   return 0;
}

   // In a message handler
   EDITSTREAM es = { 100, 0, &EditStreamCallback };
   rich_.StreamOut(SF_TEXT|SF_UNICODE, es);

The important bit is specifying the SF_UNICODE flag in conjunction with the SF_TEXT flag.

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

ChangeWindowMessageFilter

Van Binh11-Mar-09 21:51

Van Binh

11-Mar-09 21:51

Hi all,

I am trying to use WM_COPYDATA to implement IPC between my global hook dll and my main application. It works well with almost of applications on Vista except IE7 Protected mode. I successed to call ChangeWindowMessageFilter to allow my main application receive this message from lower integrity processes but my main application still could not receive this message from IE7 if it is running in protected mode. Are there anyone who successed in sending message from IE7 protected mode to higher integrity processes? Please help me!

Thank you and regard.

Need Help for PropertySheet or TabCtrl.

Le@rner11-Mar-09 21:38

Le@rner

11-Mar-09 21:38

Hi all,

I want to create Propertysheet that is having 10 propertys pages.
I want to assign some validation here like every Property page having a edit ctrl the validation is that property sheet sholud not close when user press Ok Button of prperty sheet and anyone edit box is empty
and this gives message box and focus on particular edit box ctrl.

please tell me how can i hanle OK button.

if it is possible in TabCtrl please tell me.

Please explain me with example.

thanks in advance.

To accomplish great things, we must not only act, but also dream;
not only plan, but also believe.

Re: Need Help for PropertySheet or TabCtrl.

wo will rock you11-Mar-09 22:23

wo will rock you

11-Mar-09 22:23

when you press OK button,you get every propertys pages to check it.

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