C / C++ / MFC Discussion Boards

Re: convert string to bool

Mukesh Kumar24-May-08 0:24

Mukesh Kumar

24-May-08 0:24

Thank God

Mukesh Kumar
Software Engineer

Re: convert string to bool

Jijo.Raj24-May-08 0:54

Jijo.Raj

24-May-08 0:54

A bit more tuned one.

string str1="true";
string str2="false";
bool str;

// The == operator already return bool.
str = str1 == "true";

Thanks & Regards,
Jijo.

________________________________

http://weseetips.com - Visual C++ technical tips.

Re: convert string to bool

CPallini24-May-08 2:09

CPallini

24-May-08 2:09

Jijo raj wrote:
// The == operator already return bool.

Good point, you're right.
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

Re: convert string to bool

Jijo.Raj24-May-08 2:36

Jijo.Raj

24-May-08 2:36

Thanks Pallini. Smile | :)

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http://weseetips.com[^] Visual C++ tips and tricks. Updated daily.

Any way to display the "square meter" within a string?

followait23-May-08 21:52

followait

23-May-08 21:52

like this:

|\   /| 2
| \ / |
|  V  |

Re: Any way to display the "square meter" within a string?

Garth J Lancaster23-May-08 22:05

Garth J Lancaster

23-May-08 22:05

not really sure I know what you're asking ...

a 'string' is just a sequence of characters - to display/render that string as output you could use a RTF text control or similar - then you might either be able to display a superscript character if there's any char-sets that support it, or use font-size properties, ie a big-font and a little font

you could look at something like http://www.codeproject.com/KB/static/xhtmlstatic.aspx[^]

for example, in which case your string is

"M<SUP> 2 </SUP > "

just had another thought, again, it depends on what you're doing with this string of characters. But you could use "M^2" where the understanding is that '^' means to the power of ..

'g'

Re: Any way to display the "square meter" within a string?

followait23-May-08 23:35

followait

23-May-08 23:35

Can I encode it in a CString object?

Re: Any way to display the "square meter" within a string?

Michael Schubert23-May-08 22:23

Michael Schubert

23-May-08 22:23

Like this: "m²" ?

Use charmap.exe to get the superscript "2".

Re: Any way to display the "square meter" within a string?

followait23-May-08 23:34

followait

23-May-08 23:34

Yes, can't encode it in a CString object?

I tried to copy m² to my program, it doesn't work, coz the source file is not unicode, and the project's compilation option is for string is MBCS.

Re: Any way to display the "square meter" within a string? [modified]

Michael Schubert24-May-08 0:19

Michael Schubert

24-May-08 0:19

OK, try this:

CString str = _T("m\xB2");

Edit: I just realised that this only works for CP1252 locale (English, German, French, etc.).

modified on Saturday, May 24, 2008 7:03 AM

Re: Any way to display the "square meter" within a string?

followait25-May-08 6:12

followait

25-May-08 6:12

Thanks very much.
It's done, my app is unicode.

Re: Any way to display the "square meter" within a string?

Rajkumar R24-May-08 5:36

Rajkumar R

24-May-08 5:36

you can draw the string appropriate to achieve it, may this one helpful [Extended version of ExtTextOut supporting the subscripts and superscripts
^]

Renaming a file

pl_kode23-May-08 21:14

pl_kode

23-May-08 21:14

I have two strings and I do the following...

string old_path; // this is like C:\\folder\\file.txt
string new_path; // this is like C:\\folder\\file1.txt

rename(old_path_newpath)

Doing this I get the following error. How do I overcome this error.

error C2664: 'rename' : cannot convert parameter 1 from 'class std::basic_string<char,struct std::char_traits<char="">,class std::allocator<char> >' to 'const char *'
        No user-defined-conversion operator available that can perform this conversion, or the operator cannot be called
</char></char,struct>

THANKS

Re: Renaming a file

Garth J Lancaster23-May-08 21:30

Garth J Lancaster

23-May-08 21:30

try :-

rename(old_path.c_str(), new_path.c_str() );

notice the c_str() - that effectively gives you a const char * from the string

Im presuming rename(old_path_newpath) was a typo ..

'g'

Re: Renaming a file

Hamid_RT23-May-08 22:06

Hamid_RT

23-May-08 22:06

Except this error you can use of SHFileOperation instead rename.

Re: Renaming a file

Garth J Lancaster23-May-08 22:11

Garth J Lancaster

23-May-08 22:11

if he cant figure out how to use a relatively simple API like rename(), do you honestly think he's going to be able to figure out SHFileOperation ?

I dont think so ...

(even I use a wrapper class around SHFileOperation to make it simpler)

'g'

Re: Renaming a file

Hamid_RT24-May-08 5:17

Hamid_RT

24-May-08 5:17

No my answer was genraly SHFileOperation is better than rename not for solve problem.

VC++ 6.0 MMSYSTEM.LIB??

Bob Macklin23-May-08 17:11

Bob Macklin

23-May-08 17:11

I have both VC++ 3.0 and 5.0.

When I compiled a program wit 6.0 it asked for "MMSYSTEM.LIB".

Does VC++ 6.0 have a "MMSYSTEM.LIB" file? VC++ 3.0 does have the file but it is only for 15 bit applications.

Bob Macklin
Seattle, Wa.

it's not exist "MMSYSTEM.LIB" in VC++ 6.0 setup dir.

Jack Lu23-May-08 19:18

Jack Lu

23-May-08 19:18

Re: VC++ 6.0 MMSYSTEM.LIB??

Garth J Lancaster23-May-08 21:45

Garth J Lancaster

23-May-08 21:45

Im pretty sure in vc6 you need WINMM.LIB instead of MMSYSTEM.LIB (although the header include is MMSYSTEM.h - go figure) ...

this link :- http://www.codeproject.com/KB/audio-video/volumeclasses.aspx?display=PrintAll&fid=158&df=90&mpp=25&noise=3&sort=Position&view=Quick&fr=26[^]

to an article here on CP (by Alex Chmut in case the link doesnt work) would tend to indicate as much ..

ps .. where did you acquire vc6 from - in an earlier post I though you indicated you didnt have it and couldnt afford it .. none of my business, you must be a resourceful chap

'g'

Re: VC++ 6.0 MMSYSTEM.LIB??

Bob Macklin24-May-08 4:56

Bob Macklin

24-May-08 4:56

With VC++ 5.0 I had to manually point the compiler ti "winmm.lib" when in DEBUG mode. Then the application ran as expected.

But when I ran the compiler in RELEASE mode it bitched because it could not find "MMSYSTEM.LIB". So I copied "WINMM.LIB" to "MMSYSTEM.LIB" and it compiled fine. But the application hung on one of the functions provided by "WINMM.LIB" when executed. The function that hung was "waveInStart()".

So this says the problem is in VC++ 5.0.

I can live with this problem by leaving the app in DEBUG mode.

Thanks for the help.

Bob Macklin
Seattle, Wa.

Re: VC++ 6.0 MMSYSTEM.LIB??

Michael Schubert24-May-08 6:59

Michael Schubert

24-May-08 6:59

You have to point the linker for both configurations (Debug and Release) to "winmm.lib". Copying "WINMM.LIB" to "MMSYSTEM.LIB" does not make sense.

Re: VC++ 6.0 MMSYSTEM.LIB??

Michael Schubert24-May-08 6:48

Michael Schubert

24-May-08 6:48

There is no "mmsystem.lib" shipping with VC6. Maybe you're confusing this with "mmsystem.dll" which is part of Windows?

Re: VC++ 6.0 MMSYSTEM.LIB??

Bob Macklin24-May-08 12:52

Bob Macklin

24-May-08 12:52

I have had this system for 10 years and I have never found out how to modify the link list in the IDE.

Multiple dialogs in an application

Lord Kixdemp23-May-08 13:34

Lord Kixdemp

23-May-08 13:34

Hello everyone!

It's been a while since I had to bother you guys with such a noob question, but I couldn't find an answer anywhere. Frown | :(

I want to have two MFC dialog windows open at the same time, both usable by the user. I don't mind using threads.

Any hints? Thanks in advance.

Windows Calculator told me I will die at 28. Frown | :(

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.