Re: Drawing with offset - C / C++ / MFC Discussion Boards

ok thank you i will try

Who do you think you are, God?

(I was worried that you missed a certain poster's rants.)

To your knees! (to hear the softly spoken magic spells) $Shucks | :-\$

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]

Hi I'm making a simple drawing program I used offset to set up a specific drawing.
The picture drawn with offset moves on the screen when i draw another picture everything drawn with this function moves by one pixel permanently on the screen. Cant find source of this problem.
It is an MFC aplication.

CS2::CS2(CPoint Start, CPoint End, COLORREF aColor)
{
	m_PunktP = Start;
	m_PunktD = End;
	m_Color = aColor;
	m_Pen = 1;
	m_EnclRect = CRect(Start, End);
	m_EnclRect.NormalizeRect();
}

CS2::~CS2(void)
{
}
void CS2::Draw(CDC* pDC)
{
	CPen aPen;
	POINT pt;
	if(!aPen.CreatePen(PS_SOLID, m_Pen, m_Color))
	{
		AfxMessageBox(_T("Pen creation failed"), MB_OK);
		AfxAbort();
	}
	CPen* pOldPen = pDC->SelectObject(&aPen);
	pDC->MoveTo(m_PunktP);
	pt.x = 0;
	pt.y = 63;
	m_PunktP.Offset(pt);
	pDC->LineTo(m_PunktP);
	[...]
	pt.x = 0;
	pt.y = -13;
	m_PunktP.Offset(pt);
	pDC->LineTo(m_PunktP);
	pt.x = -32;
	pt.y = 13;
	m_PunktP.Offset(pt);
	pDC->LineTo(m_PunktP);
	pDC->SelectObject(pOldPen);
}

modified on Friday, March 26, 2010 9:33 AM

Please post code snippets using the code block button.
Could you please elaborate a bit?
(I'm not sure I got you) You're trying to draw shapes at the mouse pointer position and are you in trouble because of too many drawings take place?
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]

No it moves pemanently torwards lower right when I draw more pictures theyre just slipping off screen Unsure | :~

That's probably because your 'offsetting' m_PunktP on every Draw call (albeit you aren't actually using a 1-pixel offset).
What do you intend to do, instead?

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]

I think the problem are those lines m_PunktP.Offset(pt);.
You are changing the value of this point with every call and because its a member variable this value is also changed with every call to Draw.

(I hope I understood your problem in the right way, not sure about this.)

Greetings
Covean

Ok thanks a lot guys I got it I was drawing with coordinates it was enough to make a drawing close with -1 coordiante if starting position was (x,y) the total ending position had to be (x-1, y-1); else it moved by the difrence.
thank again cya

Hello everybody,

I have a class with one member function and member variable declared in the header file.
I have compiled my code and created obj file.
When I opened the obj file I saw the decorated member function in the obj file.
But I couldn't find the member variable in the obj file.
I want to know whether compiler keep the member declared in my class in obj file or not?

Please help me.

-aji

Well the class member is of course there. Anyway using dumpbin I may hardly find it (I assigned a fancy bit pattern to). In fact there is no symbolic name (or I failed to grab it).
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]

If it's a member function then it will not need a decorated name, as it is merely defined by the compiler as an offset into the object. When an object is instantiated the code will refer to it by its memory address, and the variable will be located by the offset value.

txtspeak is the realm of 9 year old children, not developers. Christian Graus

Hi,

I need to parse a file which has spaces and tabs with some entries that i need to pull.
I'm using sscanf function.
How do I ensure that I skip the spaces and tabs which could be in randon number.
What could be a regular expression for this?

Well, skipping blanks and tabs is very simple. You may code you own implementation for.
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]

I did not ask for simplicity or complexity but rather a solution.

The solution is in your hands (well in your brain). Write a function to skip balnks and tabs (you're supposed to be a software developer).

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]

I guess you are not a software developer but rather a philoshpher who thinks about those sentences.
I need a urgent fix and dont want to travel googling. I guess the forum is to get answer and not to fight around and highjacking

tom groezer wrote:
I guess you are not a software developer but rather a philoshpher who thinks about those sentences.

Your guess is wrong: I'm actually a clown.

tom groezer wrote:
I need a urgent fix and dont want to travel googling.

Do you really need google for that? Do you realize it is pretty basic stuff?

tom groezer wrote:
I guess the forum is to get answer and not to fight around and highjacking

I suppose the forum should help, not give you code with a spoon.

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]

R u a manager or something or r u not in your good MOODS.
Get the crap out i will find it for myself : That will provide some breather to you.
Have a nice evening Smile | :)

tom groezer wrote:
R u a manager or something or r u not in your good MOODS.

Broken keyboard, eh?
Well, sometimes I really would like to be a manager, you know, just to kick in the ass the lazy developers...

tom groezer wrote:
Have a nice evening

Thanks (actually it's, morning here).

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]

That means you are not one Best of luck on your journey of becoming a a******le. Parese the space in between now Smile | :)

)

tom groezer wrote:
a******le. Parese the space in between

I'm not able to skip the blanks and the tabs, please provide me code... $Shucks | :-\$

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]

U r a real dumb physivally if not in software world if you r not able to decode that mr AH

U r a real dumb physivally if not in software world if you r not able to decode that mr AH
bahut sulag rahi hein tumhari lekin

Ranting in your mother language won't help you, my dear...
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]