Re: CString/strcpy error - C / C++ / MFC Discussion Boards

Re: SDL window in MFC application.

ThatsAlok1-Jun-06 19:12

ThatsAlok

1-Jun-06 19:12

toxcct wrote:
btw, i assume the entiere responsibility of my words.

Thats MAN word Smile | :)

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers,
Alok Gupta
VC Forum Q&A :- I/ IV
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CString/strcpy error

kitty51-Jun-06 5:07

kitty5

1-Jun-06 5:07

I'm absolutly frustrated!
could a fresh set of eyes tell me why i'm getting this error:
(line 55) error C2664: 'strcpy' : cannot convert parameter 1 from 'char' to 'char *'

int main ()
{
CString sentence;
CString str("1");
CString str1("2.1");
CString num('\xDB');
char spc = ' ';
sentence = str + num + num + str1 + num + num;

for(int index = 0; index < (sentence.GetLength()); index++)
{
if(sentence[index] == num)
strcpy( (sentence[index]), spc); //line 55
}

printf ("%s \n",sentence);

return 0;
}

Thanks so much... Confused & Frustrated

Re: CString/strcpy error [modified]

Viorel.1-Jun-06 5:15

Viorel.

1-Jun-06 5:15

The first parameter of strcpy function must be of pointer type, char *, but you supply sentence[index], which is a character of the string, not a pointer.

From the fragment, it seems that you need to replace a character with another one. For this task, try to use the Replace member function instead of your for loop:

<br />
sentence.Replace(num, spc);<br />

-- modified at 11:22 Thursday 1st June, 2006

Re: CString/strcpy error

Karthickg1-Jun-06 5:18

Karthickg

1-Jun-06 5:18

Dear Kitty!

U cannot copy a character to a string!!!
Instead make that space ' ' as " "(i.e, character as string constant)..
Then hope fully it should work.. Smile | :)

Regards
Karthick

Karthick. G

Re: CString/strcpy error

Zac Howland1-Jun-06 5:41

Zac Howland

1-Jun-06 5:41

kitty5 wrote:
for(int index = 0; index < (sentence.GetLength()); index++)
{
if(sentence[index] == num)
strcpy( (sentence[index]), spc); //line 55
}

The above code is VERY VERY bad! Unfortunately, your compiler won't tell you exactly how bad it is, but I'll give you an alternative:

Replace the entire for-loop with the following:
sentence.Replace(spc, _T(' '));

A better solution would be to re-write the entire function to the following:

<br />
int main ()<br />
{<br />
  CString sentence;<br />
  sentence.Format("1  2.1  ");<br />
  printf("%s \n", (const char*)sentence);<br />
  return 0;<br />
}<br />

If you decide to become a software engineer, you are signing up to have a 1/2" piece of silicon tell you exactly how stupid you really are for 8 hours a day, 5 days a week

Zac

Re: CString/strcpy error

kitty51-Jun-06 5:57

kitty5

1-Jun-06 5:57

Thanks,

Actually I was trying to simulate the output of a load after asking for an input and a current value(in amps) and I'm suppose to get like 0 and 0.5.
But the device kicks out 0'\xDB''\xDB'0.5'\xDB''\xDB'
instead of 0 0.5 .
And sscanf doesn't know what to do with '\xDB'.
I need to just get the 0 and 0.5.

Kitty

Re: CString/strcpy error

Zac Howland1-Jun-06 6:06

Zac Howland

1-Jun-06 6:06

Unless you know exactly how many numbers you will have in there, sscanf isn't a wise choice. You can have strtok do it for you, but the CString::Replace method will work and look cleaner.

If you decide to become a software engineer, you are signing up to have a 1/2" piece of silicon tell you exactly how stupid you really are for 8 hours a day, 5 days a week

Zac

Re: CString/strcpy error

David Crow1-Jun-06 8:49

David Crow

1-Jun-06 8:49

kitty5 wrote:
And sscanf doesn't know what to do with '\xDB'.

Right, sscanf() does not handle multibyte hexadecimal characters.

"The largest fire starts but with the smallest spark." - David Crow

MSHflexgrid hide column question

Tarek Jabri1-Jun-06 5:05

Tarek Jabri

1-Jun-06 5:05

Hi
I am working on mshflexgrid in mfc
i want to know how can i hide a column, setting the width to zero is one solution ,but the user still can resize it and see the hidden column

thanks alot

Capturing a Windows event

Grimes1-Jun-06 4:58

Grimes

1-Jun-06 4:58

Can someone please tell me if it's possible to capture a windows event(like when you receive a message with windows NET SEND) with a program. And if it is can you get like the IP from where the message was sent?

KOM UIT DAAAAA!!!

Re: Capturing a Windows event

Hamid_RT1-Jun-06 5:58

Hamid_RT

1-Jun-06 5:58

See Capture windows messages[^]
maybe it is some helpful to you

whitesky

Re: Capturing a Windows event

Grimes2-Jun-06 9:28

Grimes

2-Jun-06 9:28

Thanx that did help a bit.

KOM UIT DAAAAA!!!

How to use Tokenize() wid CStrings in VC6

Cyber Friend1-Jun-06 4:55

Cyber Friend

1-Jun-06 4:55

Hi,
I am not able to use Tokenize() method wid CString objects in my VC6 application while same code was compiled successfully in VC.Net.

int curPos = 0;
CString resToken = strDecimalWords.Tokenize(" ",curPos);
while strDecimalWords which is CString object,contains "1 hundred 23".

but VC compiler is showing this compile time error.
f:\advivr\ivractionmanager.cpp(495) : error C2039: 'Tokenize' : is not a member of 'CString'
Can anyone suggest wat to do.

Regards

Cyber Friend

Re: How to use Tokenize() wid CStrings in VC6

Viorel.1-Jun-06 5:21

Viorel.

1-Jun-06 5:21

Since the Tokenize member function was not yet defined in older MFC library, you have to solve the problem in a different way. I think you have to deal with a series of Find(" ") member functions combined with Mid(...), in a loop.

Re: How to use Tokenize() wid CStrings in VC6

Michael Dunn1-Jun-06 6:56

Michael Dunn

1-Jun-06 6:56

You can use AfxExtractSubString() in VC 6.

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

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Re: How to use Tokenize() wid CStrings in VC6

pgibson0077001-Jun-06 10:33

pgibson007700

1-Jun-06 10:33

How about this little class http://www.codeproject.com/string/ctokenex.asp[^]

FillRect with CBrush question

LukeV1-Jun-06 3:58

LukeV

1-Jun-06 3:58

Hi!

When I call FillRect with a brush created from a bitmap, the rect will get filled but the bitmap is tiled, even though the rect and bitmap size are the same (20 X 20). Is there a reason for that? I thought the bitmap would get displayed correctly!

Screenshot at www.edovia.com/pictures/FillRect.png[^]

<br />
//Draw thumb<br />
    RECT rectThumb;<br />
<br />
    hBitmap = (HBITMAP)LoadImage(NULL, m_szThumb, IMAGE_BITMAP, 0, 0,<br />
		LR_LOADFROMFILE | LR_CREATEDIBSECTION | LR_DEFAULTSIZE | LR_LOADTRANSPARENT);<br />
<br />
    bitmapThumb.Detach();<br />
    bitmapThumb.Attach( hBitmap );<br />
    bitmapThumb.GetBitmap( &bmp );<br />
<br />
    rectThumb.top       = rectFill.bottom;<br />
    rectThumb.bottom    = rectThumb.top + bmp.bmHeight;<br />
    rectThumb.left      = roundf( ( rectClient.Width() - bmp.bmWidth ) / 2 );<br />
    rectThumb.right     = rectThumb.left + bmp.bmWidth;<br />
<br />
    brush.CreatePatternBrush( &bitmapThumb );<br />
    memDC.FillRect( &rectThumb, &brush );<br />
    brush.DeleteObject();<br />

Re: FillRect with CBrush question

Viorel.1-Jun-06 4:11

Viorel.

1-Jun-06 4:11

Description of CreatePatternBrush says that Windows uses only the first 8 rows and columns of pixels from the bitmap you supplied. If you just need to display an image, why do not use bitmap-drawing functions, like BitBlt?

Re: FillRect with CBrush question

LukeV1-Jun-06 4:37

LukeV

1-Jun-06 4:37

BitBlt did the trick... thanks! Smile | :)

Re: FillRect with CBrush question

Sarath C1-Jun-06 4:35

Sarath C

1-Jun-06 4:35

http://www.codeproject.com/gdi/custom_pattern_brush.asp[^]

Sa^Rath.

"Don't Do Different things... Do Things Differently..."

I HATE ADO - newbie

antonaras1-Jun-06 3:47

antonaras

1-Jun-06 3:47

Hi again guys

This ADO is very frastrating as long as i find out one thing and i try to move on
there comes other problems.
This time i have a problem with _bstr_t

i need to give the value of string token to _bstr_t strName

i tryed _bstr_t= token;

but ofcorse i get incompatible error:: error C2440: 'initializing' : cannot convert from 'class std::basic_string<char,struct std::char_traits<char="">,class std::allocator<char> >' to 'class _bstr

Any other way around
Appreciate

Re: I HATE ADO - newbie

Viorel.1-Jun-06 3:51

Viorel.

1-Jun-06 3:51

Token seems to be of type std::string, so try this:

<br />
_bstr_t s = token.c_str();<br />
<br />

Re: I HATE ADO - newbie

antonaras1-Jun-06 3:57

antonaras

1-Jun-06 3:57

YEAH is Working
Thanks men I'm getting so close
Thanks
Thanks
Thanks Big Grin | :-D

SDL in MFC application

Manjunath S1-Jun-06 3:05

Manjunath S

1-Jun-06 3:05

Hi,
I need an SDL window on MFC application with buttons .Please Share any information about this ...

Manjunath S
GESL
Bangalore

Re: SDL in MFC application

David Crow1-Jun-06 3:09

David Crow

1-Jun-06 3:09

Manjunath S wrote:
I need an SDL window...

What's this?

"The largest fire starts but with the smallest spark." - David Crow

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