Re: JPEG to Grayscale conversion - C / C++ / MFC Discussion Boards

I wonder if you are "Googly challenged".

Rajesh R Subramanian1-Nov-07 22:09

Rajesh R Subramanian

1-Nov-07 22:09

Haru[^]

Nobody can give you wiser advice than yourself. - Cicero
.·´¯`·->ßRÅhmmÃ<-·´¯`·.

Re: I wonder if you are "Googly challenged".

c071-Nov-07 22:29

c07

1-Nov-07 22:29

Thanks.
I'm using google as well but I need to find quick solution so I wanted some good suggestions from nice members like you. Smile | :)

Re: I wonder if you are "Googly challenged".

Rajesh R Subramanian1-Nov-07 22:34

Rajesh R Subramanian

1-Nov-07 22:34

c07 wrote:
I'm using google as well but I need to find quick solution so I wanted some good suggestions

In that case, google for iTextSharp, which I found to be good. But it is to be used only with managed code.

Real men drive manual transmission.

Re: I wonder if you are "Googly challenged".

c071-Nov-07 23:03

c07

1-Nov-07 23:03

thanks again..Do you have experience with Acrobat SDK?

Re: I wonder if you are "Googly challenged".

Rajesh R Subramanian1-Nov-07 23:11

Rajesh R Subramanian

1-Nov-07 23:11

No, I have not worked on Acrobat SDK.

Nobody can give you wiser advice than yourself. - Cicero
.·´¯`·->ßRÅhmmÃ<-·´¯`·.

Re: PDF creator

David Crow2-Nov-07 3:11

David Crow

2-Nov-07 3:11

c07 wrote:
Is there any other ways or some open sources?

Try here.

"Normal is getting dressed in clothes that you buy for work and driving through traffic in a car that you are still paying for, in order to get to the job you need to pay for the clothes and the car and the house you leave vacant all day so you can afford to live in it." - Ellen Goodman

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

JPEG to Grayscale conversion [modified]

Rajish Sajayan1-Nov-07 21:34

Rajish Sajayan

1-Nov-07 21:34

Hi,

I have a BYTE pointer it contains the values that i have read from a jpeg file. how can i convert it in to a BYTE pointer of grayscale image.

Thanks in advance

-- modified at 3:39 Friday 2nd November, 2007

Re: JPEG to Grayscale conversion

Nelek1-Nov-07 22:29

Nelek

1-Nov-07 22:29

Take a look in the forum using search. There is a formule to convert RGB into grayscale. Take the value of the RGB byte, use the formule and send it to your grayscale one.

Greetings.

--------
M.D.V.

If something has a solution... Why do we have to worry about?. If it has no solution... For what reason do we have to worry about?

Help me to understand what I'm saying, and I'll explain it better to you

Wink | ;)

Re: JPEG to Grayscale conversion

C^hris L^osinger2-Nov-07 2:29

C^hris L^osinger

2-Nov-07 2:29

Gray = (R + G + B) / 3

or

Gray = Luminance = .299 * R + .587 * G + .114 * B

image processing toolkits | batch image processing

Can anyone tell me Advantage of vc++ over dotnet and vb

yaminisridaran1-Nov-07 21:28

yaminisridaran

1-Nov-07 21:28

Can anyone tell me Advantage of vc++ over dotnet and vb

S.Yamini

Re: Can anyone tell me Advantage of vc++ over dotnet and vb

Nelek1-Nov-07 22:27

Nelek

1-Nov-07 22:27

I dont have used dotnet yet, but I prefer VC++ to VB because in VC++ you can be "more or less" sure about what you are programming. VB is "easy" to code, but the final result has differences with the start code because of the translations of compiler (at last... the VB compiler translates to make the code understandable for the mashine)

Re: Can anyone tell me Advantage of vc++ over dotnet and vb

yaminisridaran1-Nov-07 22:29

yaminisridaran

1-Nov-07 22:29

Is it only the complier is advantage in vc++

S.Yamini

Re: Can anyone tell me Advantage of vc++ over dotnet and vb

Nelek1-Nov-07 23:49

Nelek

1-Nov-07 23:49

????

Re: Can anyone tell me Advantage of vc++ over dotnet and vb

toxcct1-Nov-07 22:59

toxcct

1-Nov-07 22:59

VC++ produces native code.

every .NET languages generate MSIL, which targets only the .NET framework, such as Java does with its byte Code and JRE...

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Re: Can anyone tell me Advantage of vc++ over dotnet and vb

Hamid_RT2-Nov-07 0:51

Hamid_RT

2-Nov-07 0:51

toxcct is back.;)

Re: Can anyone tell me Advantage of vc++ over dotnet and vb

toxcct2-Nov-07 1:02

toxcct

2-Nov-07 1:02

he never gone far, but he has work to do ! Roll eyes | :rolleyes:

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Re: Can anyone tell me Advantage of vc++ over dotnet and vb

Hamid_RT2-Nov-07 0:51

Hamid_RT

2-Nov-07 0:51

You cant compare Vc++ with vb or donet,or other languagges together each language has its advantage for example C++ is difficult than vb++ but you cant say so vb is better or vice versa or other example: on the vb you have procedure and function but on the c++ you have only function.
I guess you want to start to learning a language,right?

Re: Can anyone tell me Advantage of vc++ over dotnet and vb

Mark Salsbery2-Nov-07 8:24

Mark Salsbery

2-Nov-07 8:24

VC++ is also the only language that lets you produce both native and
CLR code in the same module.

And yes, you can't compare vc++ to "dotnet".

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Excel Automation

LiYS1-Nov-07 21:10

LiYS

1-Nov-07 21:10

Hi all,

The following code snippet will insert a row above the first empty row, and then copy the other row contents to the newly inserted row. The problem is when the last line was invoked the value "ASDF" applies to the entire row instead of only the first cell. How can I set value to specific cell in the newly inserted row?

range = oSheet.get_Range("A1", Missing.Value);
range = range.get_End(Excel.XlDirection.xlDown).get_Offset(1, 0);

range.EntireRow.Insert(Excel.XlInsertShiftDirection.xlShiftDown, Excel.XlInsertFormatOrigin.xlFormatFromLeftOrAbove);

// Move range to the above row, then copy it to the newly inserted row
range = range.EntireRow.get_Offset(-1, 0);
range.get_Offset(-1, 0).Copy(range);
range.Cells.get_Offset(0, 0).set_Value(Missing.Value, "ASDF");

Thanks,

Re: Excel Automation

quakeboy2-Nov-07 1:50

quakeboy

2-Nov-07 1:50

Hi i am not comfortable with C# code.
I have done lot of XL automation and VSTO with vb.net

range.Cells.get_Offset(0, 0).set_Value(Missing.Value, "ASDF");
try using 1,1 instead of 0,0

I actually didnt understand the above part...
But below solution can be helpful

or use at last again
range = oSheet.get_Range("A1", Missing.Value);
range.setValue = "ASDF"
or
range.value = "ASDF" (as it comes in VB.net)

Debugging stored procedures

vishu_av1-Nov-07 20:22

vishu_av

1-Nov-07 20:22

Hi All,
I wish to debug some stored procedures while i am debugging my VC++ code.
Please let me know the steps in detail to accomplish this.

Thanks,

vishu
Bangalore

Re: Debugging stored procedures

Bram van Kampen1-Nov-07 23:45

Bram van Kampen

1-Nov-07 23:45

What on earth is a 'Stored' procedure. Do you have the Source Code? Smile | :)

LateNightsInNewry

Re: Debugging stored procedures

toxcct2-Nov-07 0:29

toxcct

2-Nov-07 0:29

a stored Procedure is a SQL procedure (PL/SQL or like) stored on the database server...

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debug sql stored procedures

vishu_av1-Nov-07 20:18

vishu_av

1-Nov-07 20:18

Hi All,
I wish debug some stored procedures while i am debugging my VC++ code.
Please let me know the steps in details to accomplish this.

Thanks,

vishu
Bangalore

char buffer question

Programm3r1-Nov-07 19:56

Programm3r

1-Nov-07 19:56

Hi all,

I'm busy copying the value of an AnsiString variable into a char buffer that has a size of 20.

char Buf[20]={0};
AnsiString DataString;
...
/* I then copy two zeros in front of it */
strcpy(coidBuf, "00");
...
/* I then add the value to the buffer */
strcat(Buf, DataString.c_str());
...

An example of the output:
Buf: char [20] :0939E9BC : "00260026 " = size equals 22
PS. For some or other reason the actual size does not display when I post it...

So my question is how is it possible to add to the char buffer that is only 20 long but when I inspect the value it is 22 long ?? Confused | :confused:

Thanks in advance
Regards,

The only programmers that are better that C programmers are those who code in 1's and 0's Green Alien | [Alien]

Programm3r
My Blog: ^_^

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