Re: convert CString to double - C / C++ / MFC Discussion Boards

Re: Save Folder path

S p k 5215-Oct-09 22:49

S p k 521

5-Oct-09 22:49

Hi,

You can make use of _splitpath() after getting the complete path to the file.

Regards,
Suku PK

Re: Save Folder path

David Crow6-Oct-09 3:13

David Crow

6-Oct-09 3:13

raju_Code wrote:

here output is : D:\2009\October\Visual Studio Projects\visual\centerI.TIF

but i need save this file path :
D:\2009\October\Visual Studio Projects\visual\

please how to get folder path ?

Use PathRemoveFileSpec().

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Harmful USB Devices

NetDefender 20095-Oct-09 8:21

NetDefender 2009

5-Oct-09 8:21

how can I write a code for scanning harmful USB devices in a good programming language and with a good GUI.I have a database for the viruses
so when the USB device is connected the software will look up for in the list and if there is a virus tehn it will prompt the user.

Re: Harmful USB Devices

David Crow5-Oct-09 8:24

David Crow

5-Oct-09 8:24

Scanning USB devices is easy enough. How would your code know whether they were harmful?

How to create a program for querying active directory using visual C++

raja 45-Oct-09 4:55

raja 4

5-Oct-09 4:55

Dear Expert,

How to create visual c++ project using ADSI

Re: How to create a program for querying active directory using visual C++

CPallini5-Oct-09 6:57

CPallini

5-Oct-09 6:57

What about documentation [^]?
Smile | :)

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-- Alfonso the Wise, 13th Century King of Castile.

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[My articles]

convert CString to double

soongez5-Oct-09 4:46

soongez

5-Oct-09 4:46

Hey, I know this has been asked many times, and I've researched several solutions like atod etc,

here are some bits from my code.

CString line;
chkfile.ReadString(line)
CString token;
token = line.Tokenize(_T(" "),v);
TRACE(L"token %s\n",token);
TRACE(L"converted %d\n",_tstof(token));

chkfile is a CStdioFile.

the TRACE reads something like

token 66
converted 0

Why is always returning error code 0?

Thanks
soong

Re: convert CString to double

Code-o-mat5-Oct-09 5:11

Code-o-mat

5-Oct-09 5:11

soongez wrote:
TRACE(L"converted %d\n",_tstof(token));

%d expects an integer type
_tstof returns a double

Try with %f or %g or somesuch instead of %d.

> The problem with computers is that they do what you tell them to do and not what you want them to do. <
> Sometimes you just have to hate coding to do it well. <

Re: convert CString to double

Cedric Moonen5-Oct-09 7:50

Cedric Moonen

5-Oct-09 7:50

soongez wrote:
TRACE(L"converted %d\n",_tstof(token));

Wait, so you already have your double in a string but you first want to convert to a float and then back to a string... Why don't use the string directly ?

Cédric Moonen
Software developer

Charting control [v2.0]
OpenGL game tutorial in C++

Re: convert CString to double

soongez5-Oct-09 16:27

soongez

5-Oct-09 16:27

Thanks the %f worked, but I used _tstof because the other double converters would give me errors such as cannot convert CString to char* because 'line' was a CString and I couldn't change it to char* when using ReadLine. I'm still pretty poor in using pointers etc.

The TRACE is just to test if the output is correct, it will be used somewhere else later in the program.

cheers.

Change Background image of mesage box

Pryabu5-Oct-09 2:31

Pryabu

5-Oct-09 2:31

Hi all,

I have created a dialog box with blue background color. i want to change the background color of message box too in that dialog.How to add background image to a message box?

Thanks,

Re: Change Background image of mesage box

CPallini5-Oct-09 2:42

CPallini

5-Oct-09 2:42

AFAIK you cannot do that with standartd message boxes: you've to roll your own version of.
Smile | :)

Re: Change Background image of mesage box

kilt8-Oct-09 23:39

kilt

8-Oct-09 23:39

Of course you can !
simply subclass it

Re: Change Background image of mesage box

CPallini8-Oct-09 23:43

CPallini

8-Oct-09 23:43

How do you 'subclass' the MessageBox function?
Smile | :)

Re: Change Background image of mesage box

David Crow5-Oct-09 6:57

David Crow

5-Oct-09 6:57

Do you need to handle the WM_CTLCOLORDLG message?

Re: Change Background image of mesage box

Hans Dietrich5-Oct-09 13:58

Hans Dietrich

5-Oct-09 13:58

Do you mean message box as in MessageBox(), or message box as in an IDC_STATIC text control?

Best wishes,
Hans

[Hans Dietrich Software]

Can We make ContextMenu as "sytem modal"

Aabid5-Oct-09 2:01

Aabid

5-Oct-09 2:01

Hi
Can Context menu be system modal, so that if any tool tip appears,it should display behind my context menu not above it...

Thanks

Re: Can We make ContextMenu as "sytem modal"

Iain Clarke, Warrior Programmer5-Oct-09 8:50

Iain Clarke, Warrior Programmer

5-Oct-09 8:50

1/ I doubt it.
2/ How long is this menu appearing for? Yikes...
3/ If there was an answer, how long before your competitor says "Can I make my tooltip system modal, so no menu appears on top of it?"

Point 2 is the main one - a menu is a temporary thing.

If you *really* want to do your thing, make a window with lines of text that disappears when you click on one. You don't have to actually use the menu functionality of windows. It will be more work, but tough. You want something way aways from the norm, you have to do it manually.

Iain.

I have now moved to Sweden for love (awwww).
If you're in Scandinavia and want an MVP on the payroll (or happy with a remote worker), or need contract work done, give me a job! http://cv.imcsoft.co.uk/[^]

problem with sizeof()

KASR15-Oct-09 1:18

KASR1

5-Oct-09 1:18

const char* str = "C:\\Documents and Settings\\Test\\TestData";
int i = sizeof(str);

i always 4. why?

Re: problem with sizeof()

Rajesh R Subramanian5-Oct-09 1:23

Rajesh R Subramanian

5-Oct-09 1:23

KASR1 wrote:
const char* str = "C:\\Documents and Settings\\Test\\TestData";
int i = sizeof(str);

i always 4. why?

Because str is a pointer and with sizeof(str), you're NOT finding the length of the string that str is pointing to.

If you need the length of the string, use strlen (or yet better use TCHAR and _tcslen)

It is a crappy thing, but it's life -^ Carlo Pallini

Re: problem with sizeof()

KASR15-Oct-09 1:54

KASR1

5-Oct-09 1:54

i have replaced with strlen() it works fine.

Re: problem with sizeof()

Code-o-mat5-Oct-09 1:31

Code-o-mat

5-Oct-09 1:31

Aside of what Rajesh R Subramanian suggested you can also try:

const char str[] = {"C:\\Documents and Settings\\Test\\TestData"};
int i = sizeof(str); //Note that this will also include the terminating NULL character

> The problem with computers is that they do what you tell them to do and not what you want them to do. <
> Sometimes you just have to hate coding to do it well. <

Re: problem with sizeof()

Nemanja Trifunovic5-Oct-09 7:23

Nemanja Trifunovic

5-Oct-09 7:23

Code-o-mat wrote:
const char str[] = {"C:\\Documents and Settings\\Test\\TestData"};

No need for curly braces here.

utf8-cpp

Re: problem with sizeof()

Code-o-mat5-Oct-09 8:02

Code-o-mat

5-Oct-09 8:02

But they don't hurt either.

> The problem with computers is that they do what you tell them to do and not what you want them to do. <
> Sometimes you just have to hate coding to do it well. <

Re: problem with sizeof()

Cedric Moonen5-Oct-09 1:32

Cedric Moonen

5-Oct-09 1:32

str is a char*, and a pointer has always a size of 4 bytes. sizeof returns the size of the pointer in this case, not the content. As Rajesh mentioned, you should use strlen instead.

Cédric Moonen
Software developer

Charting control [v2.0]
OpenGL game tutorial in C++

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