CString::SetAt - C / C++ / MFC Discussion Boards

Re: Comparing BOOL values

Angel Kid29-Jun-03 3:00

Angel Kid

29-Jun-03 3:00

Maybe you can write your BOOL class and overload the operator "==".

YES, I am here.

Re: Comparing BOOL values

Tibor Blazko29-Jun-03 4:12

Tibor Blazko

29-Jun-03 4:12

(!b1) != (!b2)
looks better?
t!

Re: Comparing BOOL values

Ryan Binns29-Jun-03 4:31

Ryan Binns

29-Jun-03 4:31

I agree with Nick. If you think it looks ugly, write a function (make it inline for speed...). I don't think it looks ugly and is exactly what I would do.

Ryan

Being little and getting pushed around by big guys all my life I guess I compensate by pushing electrons and holes around. What a bully I am, but I do enjoy making subatomic particles hop at my bidding - Roger Wright (2^nd April 2003, The Lounge)

Punctuality is only a virtue for those who aren't smart enough to think of good excuses for being late - John Nichol "Point Of Impact"

Re: Comparing BOOL values

Anonymous29-Jun-03 7:46

Anonymous

29-Jun-03 7:46

I think the == operator disregards the "non zero" value, just assums it like "1". If that happnes, "if (b1 == b2)" is absolutly correct

Re: Comparing BOOL values

Ravi Bhavnani29-Jun-03 8:39

Ravi Bhavnani

29-Jun-03 8:39

I don't think what you wrote is ugly. I'd only add an explicit comment before the if.

// Do "something" if b1 and b2 are both true or both false
if ((b1 && b2) || (!b1 && !b2)) {
   something;
} else {
   something else;
}

/ravi

Let's put "civil" back in "civilization"
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Re: Comparing BOOL values

Anders Molin29-Jun-03 9:48

Anders Molin

29-Jun-03 9:48

That's why I always use bool instead of BOOL Wink | ;)

- Anders

Money talks, but all mine ever says is "Goodbye!"

Re: Comparing BOOL values

Chris Richardson29-Jun-03 12:24

Chris Richardson

29-Jun-03 12:24

I would use bool, but I don't think the following code is all that bad:

// Now, if b1 or b2 is anything other than 0, it will become 0, otherwise it will become 1, so the <code>==</code> operator works as expected.
if( !b1 == !b2 )
{
   // Something.
}
else
{
   // Something else.
}

Chris Richardson
Terrain Software

CString::SetAt

Sunnygirl29-Jun-03 2:53

Sunnygirl

29-Jun-03 2:53

hello @all,

i want to fill a CString. i tried this:

hs1=0;<br />
CString m_strTest1;<br />
CString minus("-");<br />
m_strTest1.SetAt(hs1, 'minus');

but it does not work.
can anybody help me?

thanks,
sunny

Re: CString::SetAt

zeki yugnak29-Jun-03 3:52

zeki yugnak

29-Jun-03 3:52

hi...

you have made an error.

<br />
void SetAt(<br />
   int iChar,<br />
   XCHAR ch<br />
);

CString::SetAt can add only char.not word!!

what do you want to do?

Re: CString::SetAt

Abbas_Riazi29-Jun-03 3:55

Abbas_Riazi

29-Jun-03 3:55

What do you do?

Use this code for filling a CString variable:

CString var=_T("Hello World!");

Now, var filled with "Hello World!" string.

A. Riazi

Re: CString::SetAt

Ryan Binns29-Jun-03 4:34

Ryan Binns

29-Jun-03 4:34

Sunnygirl wrote:
m_strTest1.SetAt(hs1, 'minus');

SetAt() expects a character, not a string. You've given a string but encoded it as a character. This will spit out a compiler warning, and is not correct. Just do this;

CString m_strTest1;
m_strTest1 = "minus";

Hope this helps,

Ryan

Being little and getting pushed around by big guys all my life I guess I compensate by pushing electrons and holes around. What a bully I am, but I do enjoy making subatomic particles hop at my bidding - Roger Wright (2^nd April 2003, The Lounge)

Punctuality is only a virtue for those who aren't smart enough to think of good excuses for being late - John Nichol "Point Of Impact"

Re: CString::SetAt

MAAK29-Jun-03 11:41

MAAK

29-Jun-03 11:41

if you need to insert a string into certain position there is CString::Insert()

CString str;
str.Insert(0, "TEST");

Transmit files by Serial Ports

Angel Kid29-Jun-03 2:14

Angel Kid

29-Jun-03 2:14

Hi,I have a question when I was writing the program about serial communication.
It seems that most articles about serial communication are wrote to the characters transmission.But now I want to transmit files by serial ports,how could I do that.I mean "transmit files" is that copy files on a PC to another.
Is there anyone could give me a method to do that? Thanks very much.

YES, I am here.

Re: Transmit files by Serial Ports

Abbas_Riazi29-Jun-03 3:50

Abbas_Riazi

29-Jun-03 3:50

It's very simple. Read file character by character and send this character to another PC by your serial interface. Another PC read these character and save them on a new file!

This article[^] has a sample demo for transferring files by Serial Port!

A. Riazi

Re: Transmit files by Serial Ports

Ted Ferenc29-Jun-03 7:30

Ted Ferenc

29-Jun-03 7:30

Just sending characters is Ok for a simple application. To do it "properly" you need to use some protocol to prevent the loss of data, such as XMODEM, YMODEM, KERMIT etc.

I am sure you can easily find a freeware library for XMODEM or YMODEM, with these protocols you can also send the name of the file you are transfering, I can't rember if that one is XMODEM or YMODEM.

Happy hunting

If I have seen further it is by standing on the shoulders of Giants. - Isaac Newton 1676

Modal CFrameWnd

pranavamhari29-Jun-03 1:26

pranavamhari

29-Jun-03 1:26

Hi,

how can i show a CFrameWnd derived class like a modal dialog box (launched from a dialog box)?

The CFrameWnd derived class has a view attached.

regards....

Hari Krishnan

Re: Modal CFrameWnd

valikac29-Jun-03 6:37

valikac

29-Jun-03 6:37

Interesting. Try creating main frame via Create().

Kuphryn

Re: Modal CFrameWnd

pranavamhari29-Jun-03 16:27

pranavamhari

29-Jun-03 16:27

hi,
here is the code to show on command click event of the parent dialog box

CMainFrame* pFrame = new CMainFrame;
// create and load the frame with its resources
pFrame->LoadFrame(IDR_MAINFRAME,
WS_OVERLAPPEDWINDOW | FWS_ADDTOTITLE, NULL,
NULL);
pFrame->ShowWindow(SW_SHOW);
pFrame->UpdateWindow();

i want it here to be modal. Any other ideas ?

Hari Krishnan

Re: Modal CFrameWnd

basementman30-Jun-03 4:49

basementman

30-Jun-03 4:49

Disable your top level window in the OnCreate of your "modal" frame, and re-enble it in the OnDestroy.

onwards and upwards...

missing resource folder? nafxcwd?

DaveE9th28-Jun-03 23:08

DaveE9th

28-Jun-03 23:08

2 questions about VC++:

first, when I close VC++ and then reopen an MFC project in VC++, my resources file is gone...where did it go. I clicked on the .dsw to open my workspace but the resource folder doesn't even show up.

second, I get the following message in my debug window:
"fatal error LNK1104: cannot open file "nafxcwd.lib""
It appears that my library is not linked properly, no? How do I remedy this problem?

tanks much, Dave

OleCreateFromFile and OleCreatePictureIndirect

Florin Ochiana28-Jun-03 22:11

Florin Ochiana

28-Jun-03 22:11

Hi,

I use OleCreateFromFile to create some ole bitmaps at the start of my program. This bitmaps are embeded in some richeditctrl's. The problem is the more bitmaps I have, the longer it takes for my program to load (because it reads the files from the disc).

I want to use OleCreatePictureIndirect which creates ole's from HBITMAPS that I can build from my resource bitmaps, reducing in this way the loading time. But I dont seem to get this function in vc7.0. Can you help me with this, please?

Thanks

-----
We are what we repeatedly do. Excellence, then, is not an act, but a habit.

Creating A Service for Windows

DeepakSharma28-Jun-03 21:47

DeepakSharma

28-Jun-03 21:47

Hi friends,

I have create an SERVICE same as diiffernet service that run on WINDOWS.I want build the service in VC++ so any body plz help me out ,,how should i start for this

Thanks in anticipation

Deepak

Re: Creating A Service for Windows

Nish Nishant28-Jun-03 22:08

Nish Nishant

28-Jun-03 22:08

See :- http://www.codeproject.com/system/serviceskeleton.asp

Nish

"I'm a bit bored at the moment so I'm thinking about writing a new programming language" - Colin Davies

My book :- Summer Love and Some more Cricket [New Win]
Review by Shog⁹ Click here for review[NW]

Re: Creating A Service for Windows

Dudi Avramov28-Jun-03 22:34

Dudi Avramov

28-Jun-03 22:34

Use my Service Wizard intergrated with the Visual Studio IDE.

headers/functions

DaveE9th28-Jun-03 21:11

DaveE9th

28-Jun-03 21:11

I have run into the problem of not knowing which headers files I need to declare with functions I want to use. Is there a way in VC++ to determine which header goes with which function? Also, I would like to know what the hundreds of different standard windows functions do, is there a book or a website that could help me learn?

Thanks

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