Re: for loop incrementing (use of continue) - C / C++ / MFC Discussion Boards

chaitanya2210-Mar-06 4:01

10-Mar-06 4:01

can a FOr loop be incremented twice at a time?
such as for(i=1; i<=100;i+2)..
as i need to have only odd numbers. Is it correct?

Re: for loop incrementing

Nish Nishant10-Mar-06 4:03

Nish Nishant

10-Mar-06 4:03

chaitanya22 wrote:
such as for(i=1; i<=100;i+2)..

should be :
for(int i=1; i<100; i+=2){}

Regards,
Nish

Nish’s thoughts on MFC, C++/CLI and .NET (my blog)
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Re: for loop incrementing

Divyang Mithaiwala10-Mar-06 4:34

Divyang Mithaiwala

10-Mar-06 4:34

chaitanya22 wrote:
such as for(i=1; i<=100;i+2)..

Hello chaitanya
for(inintializer;condition;incrementer)

Here in place of incrementer you can put any statement regards of assigment statement.

It is not require that you use only a variable that is use in initializer place. C design a very rich for loop as you never seen before.

Divyang Mithaiwala
System Engineer & Software Developer

Re: for loop incrementing

Rster02111110-Mar-06 5:04

Rster021111

10-Mar-06 5:04

You can even have multiple items in your loop, such as:

for (int i = 2, j = 3; i < 5 && j < 10; i++, j+=3)

da Big_R

Re: for loop incrementing

C^hris L^osinger10-Mar-06 10:57

C^hris L^osinger

10-Mar-06 10:57

or...

int b=0,c=0,q=60,_=q;for(float i=-20,o,O=0,l=0,j,p;j=O*O,p=l*l,
(!_--|(j+p>4)?fputc(b?q+(_/3):10,(i+=!b,p=j=O=l=0,c++,stdout)),
_=q:l=2*O*l+i/20,O=j-p+o),b=c%q,c<2400;o=-2+b*.05);

Cleek | Image Toolkits | Thumbnail maker

Re: for loop incrementing

ThatsAlok10-Mar-06 18:30

ThatsAlok

10-Mar-06 18:30

Chris Losinger wrote:
int b=0,c=0,q=60,_=q;for(float i=-20,o,O=0,l=0,j,p;j=O*O,p=l*l,(!_--|(j+p>4)?fputc(b?q+(_/3):10,(i+=!b,p=j=O=l=0,c++,stdout)),_=q:l=2*O*l+i/20,O=j-p+o),b=c%q,c<2400;o=-2+b*.05);

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Re: for loop incrementing (use of continue)

Koushik Biswas10-Mar-06 9:34

Koushik Biswas

10-Mar-06 9:34

If you do not want to make your for loop look anything other than the ordinary, but still want to skip processing the evens, use the continue keyword...

for( i = 1; i <= 100; i++ )<br />
{<br />
   if( i % 2 == 0 ) continue;<br />
   //....<br />
}

Koushik Biswas

Re: for loop incrementing (use of continue)

Steve Echols10-Mar-06 19:29

Steve Echols

10-Mar-06 19:29

While this code works, it might not be as intuitive, and more importantly, efficient as:

for (int i = 0; i < 100; i += 2)<br />
{<br />
    // do something<br />
}

Might not be important for small loops, but an extra if and % op can add up in big loops.

- delete that;

Re: for loop incrementing

chetan21018312-Mar-06 14:04

chetan210183

12-Mar-06 14:04

Hi chaitanya,

I hope the below link helps u.

http://www.its.strath.ac.uk/courses/c/

Chetan.

Helping others satisfies you...

Side-by-Side configuration problems

LukeV10-Mar-06 2:50

LukeV

10-Mar-06 2:50

Hi!

My app used to work fine on another computer when I was using VS2k3 but since I've been using VS2k5-MFC8 my app just won't start!

I used Dependency Walker to see what was going on and I got this error:

Error: The Side-by-Side configuration information in "c:\myapp.EXE"

I did put all the required files in the folder:

mfc80.dll
mfc80u.dll
mfcm80.dll
mfcm80u.dll
msvcr80.dll

I think this is related to the new manifest file used by Windows to know which dll version your app is using but right now I'm really stuck. I also tried to statically link to MFC with no luck.

Anyone can help me?

Luc

Re: Side-by-Side configuration problems

oshah10-Mar-06 5:55

oshah

10-Mar-06 5:55

In your Microsoft Visual Studio 8\SDK\v2.0\Bootstrapper\Packages\vcredist_x86 folder, there should be a file called vcredist_x86.exe. Run it on the other machine.

Re: Side-by-Side configuration problems

Michael Dunn10-Mar-06 6:35

Michael Dunn

10-Mar-06 6:35

Create a file called "myapp.exe.local" in the same dir as myapp.exe. That will make the DLL loader look in that directory first.
(On second thought, I don't know if the .local file overrides the SxS system. Try it and see)

--Mike--
Visual C++ MVP Cool | :cool:

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barcode and country, shop,...,readers

includeh1010-Mar-06 2:33

includeh10

10-Mar-06 2:33

need general knowledges of barcode.

1) do all countries in the world prefer one special barcode format? if yes, what is that?
2) do all shops and factories in one specified country prefer one special barcode format? if yes, what is that?
3) can barcode readers (i.e. used in shops) read multiple barcode formats?

thx

A nice tool for optimizing your Microsoft html-help contents.

Includeh10

Re: barcode and country, shop,...,readers

David Crow10-Mar-06 2:44

David Crow

10-Mar-06 2:44

includeh10 wrote:

1) do all countries in the world prefer one special barcode format? if yes, what is that?

While the UPC is the most popular, the government uses Code 39, books and periodicals use EAN-13, shipping cartons use Code 128 or Interleaved 2 of 5, PDF417 and DataMatrix are used when damage is a possibility.

includeh10 wrote:
3) can barcode readers (i.e. used in shops) read multiple barcode formats?

Yes, hence the name "barcode reader" versus "UPC reader."

"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain

"There is no death, only a change of worlds." - Native American Proverb

Re: barcode and country, shop,...,readers

includeh1010-Mar-06 7:21

includeh10

10-Mar-06 7:21

hi,
thanks. it sounds u r very special in barcode.

do all barcodes have same size in height (and width?), so barcode readers can read formats properly?
what does UPC stand for?

can you give me some good links to study? google offers too many links to choose.

A nice tool for optimizing your Microsoft html-help contents.

Includeh10

-- modified at 13:26 Friday 10th March, 2006

Re: barcode and country, shop,...,readers

David Crow10-Mar-06 7:45

David Crow

10-Mar-06 7:45

includeh10 wrote:
do all barcodes have same size in height (and width?),

No, not at all. The size is determined by several factors like how much room in the paper can be devoted to it, how far away the scanner will be. As long as the barcode is formatted properly, and it is within rage of the scanner, it should be able to be read.

includeh10 wrote:
what does UPC stand for?

Universal Product Code.

includeh10 wrote:
can you give me some good links to study? google offers too many links to choose.

It all depends on what in particular you are looking for. Here is a starting point.

"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain

"There is no death, only a change of worlds." - Native American Proverb

Re: barcode and country, shop,...,readers

includeh1011-Mar-06 2:30

includeh10

11-Mar-06 2:30

Only want to say thanks again.
I will learn from ur link soon.

cheers.

A nice tool for optimizing your Microsoft html-help contents.

Includeh10

Color of scrollbar of a listbox

Ward10-Mar-06 1:40

Ward

10-Mar-06 1:40

Does anyone know how to set the color of the scrollbar of a listbox. I'm using win32. I've already tried several WM_CTLCOLOR... messages, but this did not work.
Changing the colors of buttons and other controls works fine.

Ward

Re: Color of scrollbar of a listbox

Naveen10-Mar-06 1:48

Naveen

10-Mar-06 1:48

Their is no way to change the color of scroll bar in a listbox. The scroll bar in it is Build in.

u can either hide the default scroll bar and put urs

Another method is
http://www.codeproject.com/dialog/coolscroll.asp[^]

nave

Re: Color of scrollbar of a listbox

Nishad S10-Mar-06 1:51

Nishad S

10-Mar-06 1:51

But what about the detours library it uses...?

- NS -

Re: Color of scrollbar of a listbox

Stephen Hewitt10-Mar-06 2:30

Stephen Hewitt

10-Mar-06 2:30

You can't (legally) use Detours in a commercial product - I don't even think you can use it in a free product (again, legally). I haven’t read the license in a while but from memory it’s quite restrictive – I think you can use it for “research” purposes. Also it doesn't work properly on Win95/98/ME (but who cares?!?).

I'd be surprised if you couldn't use subclassing to change the colour of the scrollbars.

Steve

Re: Color of scrollbar of a listbox

Nishad S10-Mar-06 17:44

Nishad S

10-Mar-06 17:44

Stephen Hewitt wrote:
I'd be surprised if you couldn't use subclassing to change the colour of the scrollbars.

But we cannot take the handle of the default scrollbars. It is only a drawing, not a window, right? Further more the system paints it directly, in many cases( like thumb positioning, etc. ). So we cannot use the OnPaint also. That is why the detours is used.

- NS -

set the color to a Button

chetan21018310-Mar-06 1:13

chetan210183

10-Mar-06 1:13

Hi,
Is it possible to set the color to a button in a dialog based application?
I tried using CTLCOLOR_BTN unsuccessfully.

The code which i tried is given below..

HBRUSH CMyDlg::OnCtlColor(CDC* pDC, CWnd* pWnd, UINT nCtlColor)
{
HBRUSH hbr = CDialog::OnCtlColor(pDC, pWnd, nCtlColor);
if (CTLCOLOR_BTN == nCtlColor)
// It worked when i used CTLCOLOR_DLG to change the color of the DialogBox
{
hbr = ::GetSysColorBrush(1);
}

return hbr;
}

Thanks in Adavance..
Chetan.

Helping others satisfies you...

Re: set the color to a Button

Hamid_RT10-Mar-06 1:23

Hamid_RT

10-Mar-06 1:23

I think you want to change color from button you need to
derived from CButton and use WM_DRAWITEM
But for best way you can go examples in CodeProject and
you find your answer

Re: set the color to a Button

chetan21018310-Mar-06 21:35

chetan210183

10-Mar-06 21:35

Thanks a lot for your suggestion.

Helping others satisfies you...

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