C / C++ / MFC

my homework-amicable numbers

9-Mar-07 3:08

neha.agarwal27 wrote:
for sending messeage i have used SendMessage function .

Your secondary thread should not be sending messages directly to the list control (which belongs to the primary thread). Post a message to the primary thread instead, and let it update its controls. See here for more.

"Approved Workmen Are Not Ashamed" - 2 Timothy 2:15

"Judge not by the eye but by the heart." - Native American Proverb

sugaragga9-Mar-07 0:36

sugaragga

9-Mar-07 0:36

Hi I have a homework about finding amicable numbers
[[[[
Amicable numbers:Two numbers are called Amicable(or friendly)if each equals to the sum of the aliquot divisors
of the other.Aliquot divisors mean all the divisors excluding the number itself. For example,

aliquot divisors of number 220 are 1,2,4,5,10,11,20,22,44,55 and 110. The aliquot divisors of number 284 are 1,2,4,71 and 142.

If we represent anamicable pair by(m,n)and sum of aliquot divisors of m and n by(m)and(n)respectively,then for amicable pair(220,284)we get

(m)=(220)=1+2+4+5+10+11+20+22+44+55+110=284=n
(n)=(284)=1+2+4+71+142=220=m

]]]]

my teacher wanted this programs code in C++ without using any arrays(we are allowed to do this with if,while,for,do while).And also the program must be like this:

220 and 284 are amicable numbers.
Number of amicable number less than 1000 is 1.
1184 and 1210 are amicable numbers.
2620 and 2924 are amicable numbers.
5020 and 5564 are amicable numbers.
6232 and 6368 are amicable numbers.
Number of amicable number less than 10000 is 5.
....
....
....
....

It must survive up to 10^10.
Please help me,I will so appreciate... Cry | :((

Bob Flynn9-Mar-07 1:04

Bob Flynn

9-Mar-07 1:04

I'll point you in the right direction to help you do it yourself.

First off you clearly need a function to compute the aliquot divisor of a number.
Second you need to decide how to find the pairs. (assume that you need to detect/avoid duplicates) I think a simple loop can handle this problem.

You need to go through the thought process. You can get help for that here - maybe.

sugaragga9-Mar-07 13:05

sugaragga

9-Mar-07 13:05

I cannot do it by myself.I found these codes in this site but it has an array like int get_sumf(int val).We are not allowed to do that.How can I do it without ant array???

#include <stdio.h>

#define MAX 10000000000

int get_sumf(int val)
{
int sum = 1;
int k;

for (k = 2; k <= val / 2; ++k)
if (val % k == 0)
sum += k;
return sum;
}

int main()
{
int i, k;

for (i = 2; i < MAX; ++i) {
int val = get_sumf(i);
for (k = 0; k < i; ++k)
if (val == k && get_sumf(k) == i)
printf("%d %d\n", i, k);
}
return 0;
}

David Crow9-Mar-07 3:10

9-Mar-07 3:10

sugaragga wrote:
Please help me...

Exactly which part do you need help with? What code do you have in place so far? What doesn't work?

"Approved Workmen Are Not Ashamed" - 2 Timothy 2:15

"Judge not by the eye but by the heart." - Native American Proverb

MSHFlexGrid not getting displayed when run on non vc++ 7.0 platform.

sugaragga12-Mar-07 23:39

sugaragga

12-Mar-07 23:39

how can I insert these informations:
"Number of amicable number less than 1000 is 1."
"Number of amicable number less than 10000 is 5."

like this:

"220 and 284 are amicable numbers.
Number of amicable number less than 1000 is 1.
1184 and 1210 are amicable numbers.
2620 and 2924 are amicable numbers.
5020 and 5564 are amicable numbers.
6232 and 6368 are amicable numbers.
Number of amicable number less than 10000 is 5."
.
I can only write these numbers like:
220 284
1184 1210
2620 2924
5020 5564
6232 6368
....
....

Please help me Cry | :((

praveen kumar agarwal9-Mar-07 0:14

praveen kumar agarwal

9-Mar-07 0:14

I Have developed a project thru Vc++ 7.0. I have used a ocx MSHFlexgrid. Incase i have to upload my project into clients machine where Vc++ 7.0 is not present, then the MSHFlexGrid does not get displayed. Can u provide some solution to this.. if so please email it on praveena@navayuga.co.in /or can u guide me for the same..
Thks
Praveen a.
praveena@navayuga.co.in

Re: MSHFlexGrid not getting displayed when run on non vc++ 7.0 platform.

KaЯl9-Mar-07 3:53

KaЯl

9-Mar-07 3:53

Is the ocx registered on the client machines?

change tab text color

jeepoo9-Mar-07 0:04

jeepoo

9-Mar-07 0:04

how to change tab text color in tab control.give samples plz.

Re: change tab text color

vimarsh puneet9-Mar-07 0:35

vimarsh puneet

9-Mar-07 0:35

you need to make an owner draw tab control

http://www.codeproject.com/tabctrl/customtab.asp

if u didnt understand the code let me know

Re: change tab text color

prathuraj9-Mar-07 0:49

prathuraj

9-Mar-07 0:49

i want to give color to tab caption for each tab in that control.like,if a tab control have two tabs like tab1 and tab2.am want to change tab1 & tab2 to colored one.how to do this.

Re: change tab text color

vimarsh puneet11-Mar-07 20:12

vimarsh puneet

11-Mar-07 20:12

see this code

void CEnTabCtrl::DrawItem(LPDRAWITEMSTRUCT lpdis)
{
TC_ITEM tci;
CDC* pDC = CDC::FromHandle(lpdis->hDC);
HIMAGELIST hilTabs = (HIMAGELIST)TabCtrl_GetImageList(GetSafeHwnd());

BOOL bSelected = (lpdis->itemID == (UINT)GetCurSel());
BOOL bColor = (s_dwCustomLook & ETC_COLOR);

CRect rItem(lpdis->rcItem);

if (bSelected)
rItem.bottom -= 1;
else
rItem.bottom += 2;

// tab
// blend from back color to COLOR_3DFACE if 16 bit mode or better
COLORREF crFrom = GetTabColor(bSelected);

if (s_dwCustomLook & ETC_GRADIENT && pDC->GetDeviceCaps(BITSPIXEL) >= 16)
{
COLORREF crTo = bSelected ? ::GetSysColor(COLOR_3DFACE) : Darker(!bColor || m_crBack == -1 ? ::GetSysColor(COLOR_3DFACE) : m_crBack, 0.7f);

int nROrg = GetRValue(crFrom);
int nGOrg = GetGValue(crFrom);
int nBOrg = GetBValue(crFrom);
int nRDiff = GetRValue(crTo) - nROrg;
int nGDiff = GetGValue(crTo) - nGOrg;
int nBDiff = GetBValue(crTo) - nBOrg;

int nHeight = rItem.Height();

for (int nLine = 0; nLine < nHeight; nLine += 2)
{
int nRed = nROrg + (nLine * nRDiff) / nHeight;
int nGreen = nGOrg + (nLine * nGDiff) / nHeight;
int nBlue = nBOrg + (nLine * nBDiff) / nHeight;

pDC->FillSolidRect(CRect(rItem.left, rItem.top + nLine, rItem.right, rItem.top + nLine + 2),
RGB(nRed, nGreen, nBlue));
}
}
else // simple solid fill
pDC->FillSolidRect(rItem, crFrom);

// text & icon
rItem.left += PADDING;
rItem.top += PADDING + (bSelected ? 1 : 0);

pDC->SetBkMode(TRANSPARENT);

CString sTemp;
tci.mask = TCIF_TEXT | TCIF_IMAGE;
tci.pszText = sTemp.GetBuffer(100);
tci.cchTextMax = 99;
GetItem(lpdis->itemID, &tci);
sTemp.ReleaseBuffer();

// icon
if (hilTabs)
{
ImageList_Draw(hilTabs, tci.iImage, *pDC, rItem.left, rItem.top, ILD_TRANSPARENT);
rItem.left += 16 + PADDING;
}

// text
rItem.right -= PADDING;
FormatText(sTemp, pDC, rItem.Width());
COLORREF col;
col=RGB(255,0,0);
pDC->SetTextColor(col);
pDC->DrawText(sTemp, rItem, DT_NOPREFIX | DT_CENTER);
}

how to highlight a Selected text in the editor

SakthiSurya8-Mar-07 23:51

SakthiSurya

8-Mar-07 23:51

Hi,

I am designing an editor in C#. for example in searching for a text(Find)

when the searching text is found it should be highlighted.One more think,

i want to implement line number functionality in my editor.i dont know how

to do .

Please if any one knows help me.

With Thanks
Sakthi

Re: how to highlight a Selected text in the editor

Hamid_RT9-Mar-07 1:11

Hamid_RT

9-Mar-07 1:11

Your code is C++ or C#?

WhiteSky

Re: how to highlight a Selected text in the editor

David Crow9-Mar-07 3:12

Re: how to highlight a Selected text in the editor

9-Mar-07 3:12

SakthiSurya wrote:
I am designing an editor in C#.

Wouldn't you think your question would be better suited here?

"Approved Workmen Are Not Ashamed" - 2 Timothy 2:15

"Judge not by the eye but by the heart." - Native American Proverb

Joan M9-Mar-07 7:09

Joan M

9-Mar-07 7:09

Only a thought: can you use a predesigned editor? you can always attach the scintilla DLL inside your project and then you would have a lot of power without almost effort inside your app.

Hope this helps.

Add item in the list at last.

amitmistry_petlad 8-Mar-07 23:26

amitmistry_petlad

8-Mar-07 23:26

My Listview control is working fine but it add item at first position in the listview(other shift below)I want it to add the item at last.
fot that what should I do?

Amit

prasad_som8-Mar-07 23:31

prasad_som

8-Mar-07 23:31

You need to provide index of item to add. Can you show code you are using ?

Prasad
Notifier using ATL | Operator new[],delete[][^]

amitmistry_petlad 9-Mar-07 0:10

amitmistry_petlad

9-Mar-07 0:10

Sure master!
but if i use the listview count and then according the last count i add one in the count and then try to put in the listview is it ok ?

Amit

_AnsHUMAN_ 8-Mar-07 23:39

_AnsHUMAN_

8-Mar-07 23:39

You can do something like this as per your needs...

LV_ITEM lvitem;
int nIndex = -1;
lvitem.mask = LVIF_TEXT;
lvitem.iItem = i;	    // i is a static variable
lvitem.pszText = "";
lvitem.iSubItem = 0;
lvitem.state = 0;
nIndex=m_ListCtrl .InsertItem(&lvitem);
i++;   // static variable to add the item at the specified position
CString str;
str.Format("%d",i);
m_ListCtrl.SetItemText (nIndex,0,str);   // Set the item text here

Somethings seem HARD to do, until we know how to do them.
Wink | ;-)

_AnShUmAn_

David Crow9-Mar-07 3:13

9-Mar-07 3:13

amitmistry_petlad wrote:
...but it add item at first position in the listview...

Only because you have 0 hardcoded as the item number.

Are you adding items in a for/while loop?

"Approved Workmen Are Not Ashamed" - 2 Timothy 2:15

"Judge not by the eye but by the heart." - Native American Proverb