C / C++ / MFC Discussion Boards

Re: how can i get CLSID from ProgID in managed c++

Laxman Auti13-Dec-06 20:10

Laxman Auti

13-Dec-06 20:10

Banks K wrote:
I want CLSID from prog id in managed code

Please post on proper forum to get answer. Rose | [Rose]

Knock out 't' from can't,
You can if you think you can
Cool | :cool:

MFC

Bravoone_200612-Dec-06 23:12

Bravoone_2006

12-Dec-06 23:12

How to update just 2 field from my table ?

i whant to edit a field from my database-> table but i dont know how to update just that field!
My database visual fox pro 6.0
Database name : Database_Pers
Table name : city
my string to update in the field city is CString sTemp;
this is :
CDatabase_Pers pPers;
...

pPers.Edit();
pPers.m_city = sTemp;

....This is update ....but if update all i have this error:
SQL:statement too long !
pPers.Update(); <-This generate this error !

Bravoone

Re: MFC

David Crow13-Dec-06 5:41

David Crow

13-Dec-06 5:41

Bravoone_2006 wrote:
SQL:statement too long !

You've still not indicated how long the SQL statement is.

Bravoone_2006 wrote:
pPers.Update(); <-This generate this error !

Step into this method to see what the actual SQL statement looks like. That will go a long way towards finding the problem.

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

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

Re: MFC

Hamid_RT13-Dec-06 18:12

Hamid_RT

13-Dec-06 18:12

if your problem is on sql I suggest aks on sql forum Smile | :)

WhiteSky

about MFC

rajaasif12-Dec-06 23:04

rajaasif

12-Dec-06 23:04

Please can anybody give me any cites from where i could learn MFC

gujar

Re: about MFC

Rajesh R Subramanian12-Dec-06 23:18

Rajesh R Subramanian

12-Dec-06 23:18

You're here already! I don't know a website that's better than the CodeProject to learn MFC. Get a life dude.

Nobody can give you wiser advice than yourself. - Cicero
ப்ரம்மா

Re: about MFC

ShilpiP12-Dec-06 23:45

ShilpiP

12-Dec-06 23:45

I think this site will help u

http://functionx.com/visualc/index.htm[^] Smile | :)

Yes U Can ...If U Can ,Dream it , U can do it ...ICAN

Re: about MFC

Hamid_RT13-Dec-06 0:20

Hamid_RT

13-Dec-06 0:20

www.codeproject.com and www.MSDN.com Smile | :)

WhiteSky

Re: about MFC

Maximilien13-Dec-06 3:42

Maximilien

13-Dec-06 3:42

Seatle ?

Maximilien Lincourt
Your Head A Splode - Strong Bad

How edit the formicon and -text

b43r_3oo312-Dec-06 22:23

b43r_3oo3

12-Dec-06 22:23

Hello,

I have an existing Programm without sources and i want edit the forms icon and text. is there any API Function/Call or something else?

Greetings from germany

How to Set BackGround colors to a CProperty Sheet Tab Controls [modified]

k. satheesh_1712-Dec-06 22:07

k. satheesh_17

12-Dec-06 22:07

Hi all,
I am trying to set some Background colors to CpropertSheet Tab controls.
I have tried Handling
OnPaint
OnCtlColor
OnEraseackground to acheive it.But none is helping
This is a Samble code which i used in EraseBackground handler
CPropertyPage::OnEraseBkgnd(pDC);
CRect rect;
CTabCtrl *tab = internal_sheet.GetTabControl();
tab->GetItemRect(0,&rect);
pDC->FillSolidRect(&rect, RGB(255, 0, 0));
return true;
This also not working

I am also trying to set the Tap position from the default left side to Right
This ModifyStlye(0,TCS_RIGHT); Positioning the tab in the bottom side.
ans the "TCS_VERTICAL" is not showing other tabs.
Please throw some ideas to acheive this.
Rose | [Rose]

-- modified at 4:19 Wednesday 13th December, 2006

Re: How to Set BackGround colors to a CProperty Sheet Tab Controls

Mark Salsbery13-Dec-06 6:12

Mark Salsbery

13-Dec-06 6:12

Does this work?

BOOL CMyPropertyPage::OnEraseBkgnd(CDC* pDC) 
{
   CRect rect;
   GetClientRect(&rect);
   pDC->FillSolidRect(&rect, RGB(255, 0, 0));
   return TRUE;
}

Re: How to Set BackGround colors to a CProperty Sheet Tab Controls

Hamid_RT13-Dec-06 18:09

Hamid_RT

13-Dec-06 18:09

if you use of WM_PAINT what happens?

WhiteSky

A timed loop

aquawicket12-Dec-06 22:05

aquawicket

12-Dec-06 22:05

Hey,,,

I have a fer function that wait for input for a while...
at the moment... I code it simple like this...

for(i=0; i<50000000; i++){

//waiting for input

}

As Processes inside the loop are changing, the loop takes longer and shorter amounts of time to complete.. 3sec to 50sec.

what the easiest way to set up a timed loop that loops the same amount of time every time?

Example:

While ( time < 10Seconds ){

//wait for input
}

Re: A timed loop

namy112-Dec-06 22:15

namy1

12-Dec-06 22:15

Hi!!,
u can put a counter inside the loop that increments to a particular no every time
e.g.
int count=0
for(i=1;i<=50000000;i++)
count = count+i

Re: A timed loop

aquawicket12-Dec-06 22:19

aquawicket

12-Dec-06 22:19

Later I'll be adding a "wait time option" so I gotta go by time... Just looking for the easiest way to code in a timer into a loop.

Re: A timed loop

aquawicket12-Dec-06 22:52

aquawicket

12-Dec-06 22:52

Ok.. I think I figured out the easiest way Smile | :)

DWORD dwStart = GetTickCount();
while( GetTickCount() - dwStart < WAITTIME ){

//loop for WAITTIME milliseconds
}

Re: A timed loop

CPallini12-Dec-06 23:07

CPallini

12-Dec-06 23:07

What about WM_TIMER ?

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.

Regarding parameter by reference in copy constructor

Karismatic12-Dec-06 22:04

Karismatic

12-Dec-06 22:04

I am confused that why we have to pass a reference of same class type into a copy constructor? I searched a lot but i am not able to find out the exact answer.So,plz if anybody can forward me the relevant answer of this question then plz forward it as soon as possible.Please specify the reason.

thanks..

Re: Regarding parameter by reference in copy constructor [modified]

prasad_som12-Dec-06 22:16

prasad_som

12-Dec-06 22:16

For that you need to know, in which cases copy ~~contructor~~ constructor get called.
One of the place where it is called is when we pass parameter by value.
Thats why, to avoid recursive call, prameter to copy constructor is passed by reference.

-- modified at 4:48 Wednesday 13th December, 2006

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

Re: Regarding parameter by reference in copy constructor

Rajesh R Subramanian12-Dec-06 22:19

Rajesh R Subramanian

12-Dec-06 22:19

pan_angel wrote:
why we have to pass a reference of same class type into a copy constructor?

Obviously you'd.

Read it here[^]. I suggest you to read a good book on c++ or rather on the object oriented paradigm.

Nobody can give you wiser advice than yourself. - Cicero
ப்ரம்மா

Re: Regarding parameter by reference in copy constructor

Mark Salsbery13-Dec-06 6:23

Mark Salsbery

13-Dec-06 6:23

pan_angel wrote:
I am confused that why we have to pass a reference of same class type into a copy constructor?

Which part are you confused about: the reference has to be the same class or that you have to
pass a reference?

The reference has to be the same class because it is a copy constructor - used to construct a copy
of an object of the class, as it's name implies.

The reference has to be there because it's the only way to access the object which needs to be
copied.

array of structure

namy112-Dec-06 22:02

namy1

12-Dec-06 22:02

Hello everyone,
I am creating an array of structure as
struct Table
{
RFC_CHAR fieldname[35],
fieldvalue[255];
};
Table t2[2];
Now i m initialising this array in a funtion and i want the funtion to return this structure
as well as in another function i want to recieve this array and finally i want a pointer to point to this function
please tell me how can i do this Rose | [Rose]

Re: array of structure

CPallini12-Dec-06 23:00

CPallini

12-Dec-06 23:00

And what is the question?

Maybe you don't know how to pass the array?
Then have a look at the following code snippet:

<br />
void testStruct(Table *tp)<br />
{<br />
	tp[0].fieldname = ...<br />
<br />
}<br />

hope that helps...

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.

Re: array of structure

namy112-Dec-06 23:20

namy1

12-Dec-06 23:20

no i dont want to pass the array to a function
i have created array of a structure and initialised it in function A and A returns this array
the struct is declared global
now in function B i want to call funtion A and take its return value which would be the array in an array variable Cry | :((

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