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Hello,
i have simple question, think of a common prototype like
int FuncName(int var);
now, what does it mean if i put a conclusive "=0" on it, like
int FuncName(int var) = 0;
Thanks in advance!
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it gave me this error
error C2072: 'FuncName' : initialization of a function
this is declaration of a pure function of a class. that means that the implementation of the method is not in this class and must be implemented in the derived class.
I have lost more blood shaving than on the battlefield - Adolf Hitler
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Thanks, but ..
let's think that it is already implemented in a derived class, i only want to know what i does!!
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Its a way to declare that the base class will not implement the function the derived class have to do it before they make object of the class.
plus pure virtual functions in the base class means you cant make an object of the baseclass.
There are lot of other concepts behind pure virtual functions, read some good book on it to be more clear.
pure virtual functions are the foundations of COM
I have lost more blood shaving than on the battlefield - Adolf Hitler
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Thank you for your help!
But, please delete your citation of Adolf Hitler, there's nothing good associated with Adolf Hitler! It my be funny if you tell the citation once, but it is absolutely wrong to use it as a footnote!
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I agree he was worst living being ever walked on the earth, but you should agree with me that he was the Best leader ever walked on the earth to motivate his people,
Dont worry i will remove it soon  I keep changing my sig every now n then.
I have lost more blood shaving than on the battlefield - Adolf Hitler
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Mr.Prakash wrote:
...you should agree with me that he was the Best leader ever walked on the earth to motivate his people,
If you consider fear to be a motivator. A better leader uses love and compassion, never force. Hands down, the title of best-leader-ever-walked-on-the-earth-to-motivate-his-people goes to Christ Jesus.
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DavidCrow wrote:
Hands down, the title of best-leader-ever-walked-on-the-earth-to-motivate-his-people goes to Christ Jesus.
correct.
Some ppl will say he never existed that depends on beliver and non beliver.
ok about Hitler
He alone cannot spread fear, He had loyal ppl to do that, and he motivated ppl to be loyal to him. Its well know that he could move ppl emotionally with his speech.
Fear was for nor german ppl.
P.R.A.K.A.S.H
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Mr.Prakash wrote:
Its a way to declare that the base class will not implement the function the derived class have to do it before they make object of the class.
Though the base class can still provide an implementation that derived classes can use.
Mr.Prakash wrote:
pure virtual functions in the base class means you cant make an object of the baseclass.
Correct.
Kevin
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Kevin McFarlane wrote:
Though the base class can still provide an implementation that derived classes can use.
are you sure about pure virtual functions ?
I have lost more blood shaving than on the battlefield - Adolf Hitler
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Mr.Prakash wrote:
are you sure about pure virtual functions ?
Yes. There's an example somewhere in Scott Meyers's Effective C++.
I don't think a similar thing is possible in Java or C# though.
Kevin
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In what units MsFlexGrid is measured self?
If I ask MsFlexGrid, for CellHeight it return some
not pixel size, about 12-15 times more than pixels.
What is this units and how to convert it pixels?
thanks you
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I'm pretty sure it uses twips.
20 twips = 1 point, 72 points = 1 inch
1440 twips = 1 inch
To convert to pixels, you need to know how many pixels to the inch, after which it's just plugging numbers into a formula
Hint: GetDeviceCaps(hDC, LOGPIXELSX) returns number of pixels per inch width-ways, and most monitors have 'square' pixels.
Steve S
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No.
A pixel is a variable sized thing, depending on the resolution of the output device, whereas a point is (or at least, should be) a fixed size, namely 1/72 of an inch.
Hence in 12 point Arial text, the character cell is 1/6 (= 12/72) of an inch in height. (I did a printing course when I was at college - which involved cases of cold metal characters, so I also learned why line spacing is called 'leading', and why you sometimes space characters or words horizontally by distances called either em or en.
Steve S
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How to implement method for the conversion of color's lightness without conversion to HSL and back to RGB?
Best regards,
Eugene Pustovoyt
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I want to test my application under disk full conditions. Is there a good utility that can use up my available disk space?
Todd Smith
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Windows OS
I have lost more blood shaving than on the battlefield - Adolf Hitler
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How about SetFilePointer() followed by SetEndOfFile()?
"The pointy end goes in the other man." - Antonio Banderas (Zorro, 1998)
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Trying to get 4723 bytes of an oracle clob using ADO in vc++, when getting the recordset i am getting 4723 bytes but am getting 996 null chars after every good 996 chars.
Problem is occuring on a windows client against an oracle for linux server
Anyone have any clue why the data is getting corrupted via ado
If i use ole/db to get the data everything is fine. However this particular customer requires using ado recordsets
Any help is greatly appreciated
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sounds like it might be a unicode thing ... ur getting "space" for 16bit chars but ur only getting 8bit chars
maybe?
"there is no spoon"
biz stuff about me
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Hi,
I have a main window in which I am displaying a bitmap using BitBlt in WM_PAINT.
In this window I have a 3 static controls.
I want to make them transperent ie: only their text appears.
I am using WM_CTLCOLORSTATIC for setting font and text color.
We need to return Brush from the WM_CTLCOLORSTATIC message...
I am using SetBkMode(hDC,TRANSPARENT)in this message and returning HOLLOW_BRUSH
Now in one of this static control I am changing its text using SetWindowText(...) frequently.
The problem is that all the text i m changing is looking all overlapped....
(I know this thing happens when one uses SS_SIMPLE style of static control ... I am not using this style)
what can be the problem.
Can anybody help me with this.
modified 21-Apr-21 21:01pm.
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I just noticed Platform SDK: January 2004 Edition is available on Microsofts website. However, when I go to download it it just shows me the old SDK. Is it not available for download yet? I desperately need to get and even if I pay for it I still have to wait 2 weeks to get the CDs.
Any information?
Thanks
[Update]
I just went to order the CD and all I see available is the order SDK's, the new one is still not there!
[/Update]
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