Re: How to write assignment operator for a class with constant member variable?

ComplexLifeForm25-Dec-08 4:54

25-Dec-08 4:54

Hello Guys,

Thanks a lot for your response. As far as the class goes it's not a design issue. I just wanted to find out how to write a proper an assignment operator of for a class with contant member. So it was just out of curosity that I wrote a sample class.

Regards
Smile | :)

Image problem ?

Le@rner24-Dec-08 0:24

Le@rner

24-Dec-08 0:24

Hi all,

in printing i want to print a image i m using this code.its works but the imgae displayed very-very small.or its only works for image that is add in resource.

<br />
CBitmap bmp;<br />
if (bmp.LoadBitmap(IDB_BITMAP1)!=0)<br />
{<br />
BITMAP bmpInfo;<br />
CRect rect;<br />
bmp.GetBitmap(&bmpInfo);<br />
<br />
CDC dcMemory;<br />
dcMemory.CreateCompatibleDC(pDC);<br />
<br />
CBitmap* pOldBitmap = dcMemory.SelectObject(&bmp);<br />
<br />
int nX = rect.left + (rect.Width() - bmpInfo.bmWidth) / 2;<br />
int nY = rect.top + (rect.Height() - bmpInfo.bmHeight) / 2;<br />
<br />
pDC->BitBlt(rect.left, rect.top, bmpInfo.bmWidth, bmpInfo.bmHeight, &dcMemory,0, 0, SRCCOPY);<br />
}<br />
<br />

i want to use any image that is browse by any location.please tell me what can i do for this.

thanks in advance.

IN A DAY, WHEN YOU DON'T COME ACROSS ANY PROBLEMS - YOU CAN BE SURE THAT YOU ARE TRAVELLING IN A WRONG PATH

Re: Image problem ?

Naveen24-Dec-08 0:34

Naveen

24-Dec-08 0:34

"_$h@nky_" wrote:
its works but the imgae displayed very-very small.

The problem is that, usually the resolution of the printer DC's are very high, it depends on the dpi of the printer and paper size you choose( . I think you can get the resolution of printer dc using the DocumentProperties() function. Then instead of using the BitBlt, use StretchBlt and strech the image to the required size.

nave

[OpenedFileFinder] [My Blog]

Re: Image problem ?

Le@rner24-Dec-08 0:42

Le@rner

24-Dec-08 0:42

Can u please explain with example.

and please tell me what can i do for Browsed image.

IN A DAY, WHEN YOU DON'T COME ACROSS ANY PROBLEMS - YOU CAN BE SURE THAT YOU ARE TRAVELLING IN A WRONG PATH

Re: Image problem ?

Naveen24-Dec-08 0:48

Naveen

24-Dec-08 0:48

"_$h@nky_" wrote:
and please tell me what can i do for Browsed image.

You mean the image you directly load from the file? There is no difference in printing those images and images in the resource. Only thing is, you have to use the LoadImage() function to load images from the file.

nave

[OpenedFileFinder] [My Blog]

Re: Image problem ?

Hamid_RT24-Dec-08 0:51

Hamid_RT

24-Dec-08 0:51

Change BitlBlt to StretchBlt and see Printing a Document[^].

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: Image problem ?

Code-o-mat24-Dec-08 6:03

Code-o-mat

24-Dec-08 6:03

Just an addition to what Hamid suggested there, when i was working on -let's call it- printing systems i had the pleasure to meet printer drivers which did not support StretchBlt at all, only BitBlt and i had to substitute StretchBlt with creating a memory DC and bitmap the size of the needed target, StretchBlt-ing the original image onto this memory area and then BitBlt this to the printerdc.

> The problem with computers is that they do what you tell them to do and not what you want them to do. <

Re: Image problem ?

KASR124-Dec-08 1:47

KASR1

24-Dec-08 1:47

You could use like below

CString sFileLocation = "C:\\Test\\SomeFile.bmb" \\Get it by browsing.
HBITMAP hBmp = (HBITMAP)LoadImage(NULL, sFileLocation, IMAGE_BITMAP, 0, 0, LR_LOADFROMFILE);

media streaming on a network!

Mustapha Rédouane23-Dec-08 23:34

Mustapha Rédouane

23-Dec-08 23:34

Guys! where are the experts when you need them?!

i'm not an expert on this stuff! but i have to work on the audio-video calls in the chat project i have!!

do anyone have ideas about video and audio streaming on a network??

any ideas about using DirectShow??

Re: media streaming on a network!

Naveen24-Dec-08 0:25

Naveen

24-Dec-08 0:25

Mind Machine wrote:
Guys! where are the experts when you need them?!

Ho....I stepped out for a tea.

Mind Machine wrote:
do anyone have ideas about video and audio streaming on a network??

Many of us had. And they have put those ideas as articles in code project. Do you mind having a search among those articles?

nave

[OpenedFileFinder] [My Blog]

Re: media streaming on a network!

Varghese Paul M24-Dec-08 0:25

Varghese Paul M

24-Dec-08 0:25

I think, RTP is the protocol you are looking for.
You may need some codecs also to minimize the bandwidth usage.
Try exploring the SIP (Session Initiation Protocol) standard which will give you an idea of calls over the network with media streaming. You can also go through codecs G.723 and G.711A-Law and G.711Mu-Law where windows have built in support and can be accessed via ACM (Audio compression manager).

Good luck

cheers
Varghese Paul

Re: media streaming on a network!

Hamid_RT24-Dec-08 0:58

Hamid_RT

24-Dec-08 0:58

Mind Machine wrote:
Guys! where are the experts when you need them?!

[code]
Dont worry,they see you and they are thinking!
[/code]

Did you see audio-video[^]?

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 )

Print Dialog "Print To File"

Paresh Chitte23-Dec-08 22:41

Paresh Chitte

23-Dec-08 22:41

Hi,

Programmatically, Instead of standard printer, I want to print report to a file ("Print To File" option in Print Dialog). I use IWebBrowser to navigate the report in my code.

1. I have a report file, XML and XSL based report, viewable in IE.
2. In my program, I use IWebBrowser to navigate report in background, before sending it to standard printer.
3. Now I want to print this report to a file programmaticaly, ("Print To File").

Please refer sample code below,

void PrintReport(CString strReportName, OLECMDEXECOPT enumPrompt)
{
::OleInitialize(NULL);
	
void PrintReport(CString strReportName, OLECMDEXECOPT enumPrompt)
{
::OleInitialize(NULL);
	
try
    {
        SHDocVw::IWebBrowserAppPtr ptrWebBrowserApp(__uuidof(SHDocVw::InternetExplorer));
        SHDocVw::IWebBrowser2Ptr ptrWebBrowser = ptrWebBrowserApp;
		
        _variant_t vtDummy;
        HRESULT hr = E_FAIL;
		
	BSTR bUrl = strReportName.AllocSysString();
		
        hr = ptrWebBrowser->Navigate(bUrl, &vtDummy, &vtDummy, &vtDummy, &vtDummy);
		
	VARIANT_BOOL bBool = ptrWebBrowser->Busy;
        while(ptrWebBrowser->Busy == VARIANT_TRUE)
        {
            ::Sleep(1000);
        }
		
        IOleCommandTargetPtr ptrOleCmdTarget = ptrWebBrowser->Document;
	<big>// Here I want to "Print To File" directly, without any prompt.</big>
	hr = ptrOleCmdTarget->Exec(NULL, OLECMDID_PRINT, OLECMDEXECOPT_DONTPROMPTUSER /*OLECMDEXECOPT_PROMPTUSER*/, NULL,NULL);
    }
    catch(_com_error& e)
    {
         _ftprintf(stderr,
             _T("Error: 0x%08X (%s); Source: %ls; Desc: %ls"),
             e.Error(), e.ErrorMessage(),
             LPCWSTR(e.Source()), LPCWSTR(e.Description())
    			);
    } 
	::OleUninitialize();
}

Any help would be highly appreciable.

Regards,
Paresh.

How to convert bianry data to Base64

Dark_eye23-Dec-08 21:33

Dark_eye

23-Dec-08 21:33

Hello, all I am working with Dev-Cpp, and I have the folowing code to read a file:

#include <fstream.h>
   ...
   char buffer[100];
   ifstream myFile ("data.bin", ios::in | ios::binary);
   myFile.read (buffer, 100);
   if (!myFile) {
       // An error occurred!
       // myFile.gcount() returns the number of bytes read.
       // calling myFile.clear() will reset the stream state
       // so it is usable again.
   }
   ...
   if (!myFile.read (buffer, 100)) {
       // Same effect as above
   }</fstream.h>

now, I have the base64 class from here: www.adp-gmbh.ch/cpp/common/base64.html[^]

How I can convert the buffer into base64?

Re: How to convert bianry data to Base64

Richard Andrew x6424-Dec-08 5:19

Richard Andrew x64

24-Dec-08 5:19

From looking at the code you linked to, it looks like you would do the following:

std::string EncodedString;

if ( myFile.read ( buffer, 100 ) )
{
     EncodedString = base64_encode( buffer, 100 );
}

// EncodedString now contains the base64 data!

Re: How to convert bianry data to Base64 [modified]

Dark_eye24-Dec-08 6:28

Dark_eye

24-Dec-08 6:28

WOW!!!
How near i was!!!
Thank you a lot!!!!

Now, a little problem, how I can get the size of the file, to get all the base64?

modified on Wednesday, December 24, 2008 12:44 PM

Re: How to convert bianry data to Base64

Richard Andrew x6424-Dec-08 7:07

Richard Andrew x64

24-Dec-08 7:07

I'm not familiar with the class you're using to read the file, so I'm afraid I can't help you there. But have a good holiday!

Re: How to convert bianry data to Base64

Member 419459324-Dec-08 15:22

Member 4194593

24-Dec-08 15:22

Well, base 64 means that there are 64 characters in the character set. It takes 6 bits to represent the characters 0-63, so multiply the number of bytes by 8, and divide by 6 to get the converted character count (probably need to add 63 to the byte count times 8 before dividing to catch any partial character at the end).

Dave.

Re: How to convert bianry data to Base64 [modified]

Dark_eye24-Dec-08 22:40

Dark_eye

24-Dec-08 22:40

Thanks for your help, but I was meaning the size of the file, to dinamically adjust the size of the char array and the second parameter of the read command.

Happy holidays for you too

EDIT: Solved I got the size with the stat() function, now it is working flawless.

Thank a lot, CodeProject is great!!

modified on Thursday, December 25, 2008 6:04 AM

Re: How to convert bianry data to Base64

CPallini24-Dec-08 5:22

CPallini

24-Dec-08 5:22

Possibly reading a Good C/C++ tutorial: you've to pieces of code already done. Is it so difficult to glue them a bit?
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]

Re: How to convert bianry data to Base64

Hamid_RT24-Dec-08 6:28

Hamid_RT

24-Dec-08 6:28

Hi
Did you get my mail?

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 convert bianry data to Base64

Dark_eye24-Dec-08 23:35

Dark_eye

24-Dec-08 23:35

No I have not received any email, Send it Directly to admin@d-eye.es

C++

Shashi.Shinde23-Dec-08 20:56

Shashi.Shinde

23-Dec-08 20:56

Hi,
Actually i want to make an C++ application whose purpose is to do Database Operation .
And here MS Access will be my database.

So please help me out as soon as possible.

Thank you,
Shashi

Re: C++

Chandrasekharan P23-Dec-08 21:38

Chandrasekharan P

23-Dec-08 21:38

who is stopping you from doing the application??

Re: C++

Shashi.Shinde23-Dec-08 22:12

Shashi.Shinde

23-Dec-08 22:12

God bless U!

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

C / C++ / MFC

Guys! where are the experts when you need them?!

do anyone have ideas about video and audio streaming on a network?? any ideas about using DirectShow??

do anyone have ideas about video and audio streaming on a network??

any ideas about using DirectShow??