C / C++ / MFC

Re: Help with number to string conversion

23-Feb-09 14:26

Try using the ToString method:

priceDisp->Text = price.ToString();

Also, maybe you could use the correct forum[^] - you're more likely to get the correct answer there.

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

TabascoSauce23-Feb-09 15:32

TabascoSauce

23-Feb-09 15:32

Bah, sorry about the forum Frown | :(

This is the second time I've done this (accident).

Non-Static Member Call Question

Rangarajan Varadan23-Feb-09 12:51

Rangarajan Varadan

23-Feb-09 12:51

Hi All,
I've used the example from the below link to build a small application.
http://www.codeproject.com/KB/cpp/Simple_Tab_Control.aspx

One thing I've tried to add to it, but cannot figure out how is....

When I Click on a particular Tab, I want to jump into a function in that PP's class.

For Example, if I have a btn on tab 2 called "GetData" then I want to run the function CPPTwo::OnBnClickedGetData as soon as I click on the Tab.

I cannot get a pointer to the class from the OnTcnSelchange function, not sure how to get it either.

Any suggestion will be much appreciated.

Cheers
R

Re: Non-Static Member Call Question

Stuart Dootson23-Feb-09 13:53

Re: Non-Static Member Call Question

23-Feb-09 13:53

When a property page is activated, it will be shown - I think it'll be sent the WM_SHOWWINDOW[^] message? Add a handler for that to each of your property page classes and you can call whatever methods you want.

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

David Crow23-Feb-09 16:26

Re: Non-Static Member Call Question

23-Feb-09 16:26

Stuart Dootson wrote:
When a property page is activated, it will be shown - I think it'll be sent the WM_SHOWWINDOW[^] message?

Or the PSN_SETACTIVE notification.

"Old age is like a bank account. You withdraw later in life what you have deposited along the way." - Unknown

"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

Rangarajan Varadan25-Feb-09 10:40

Rangarajan Varadan

25-Feb-09 10:40

Thanks for the suggestions...they got me going in the right track....

Here is the resolution/what I ahve done now to implement what I set out to do....

Scenario is I have a Tabbed application, where each of the tabs are a CPropertyPage (reference: see Venura's Simple Tab Control)

and my objective was to run a member function of a Tab when a user clicks into the Tab

In the Tab's/PP's class add the handler
CPPTwo.h

afx_msg void OnWindowPosChanged(WINDOWPOS *pwp);

CPPTwo.cpp

//... under the event handler section add the Event Handler
BEGIN_MESSAGE_MAP(CPPTwo, CPropertyPage)
.
.
ON_WM_WINDOWPOSCHANGED()
.
.
END_MESSAGE_MAP()

Then add the member function

void CPPTwo::OnWindowPosChanged(WINDOWPOS *pwp)	
{
   //wincore.cpp calls this function if you enter OR leave the tab
   //This below if condition will run only if the tab is cicked in to i.e. Enter Tab
   if ((pwp->flags & SWP_SHOWWINDOW))
   {
      //The code you want to run each time you enter the tab
   }
}

msdn reference: WM_SHOWWINDOW Notification,
http://msdn.microsoft.com/en-us/library/ms632645.aspx
In this if you look under Community Content section you'll see Use WM_WINDOWPOSCHANGED to react to window state changes
This is Raymond Chen's blog.. which is what I followed to acheive what I wanted.
here the link to the blog:
http://blogs.msdn.com/oldnewthing/archive/2008/01/15/7113860.aspx

Cheers
Ranga

-Remember Coding is fun.... coding with bugs makes it even more fun.... Poke tongue | ;-P

read comma delimeted numbers and text mixture in a line [modified]

mrby12323-Feb-09 12:08

Re: read comma delimeted numbers and text mixture in a line

23-Feb-09 12:08

Hi

I would like to read each number (integer and float) and a word (e.g. E1) in between these numbers:

1,1,1,E1,0.13060,-0.40193,-0.90631
7,1,1,A25,0.13060,-0.40193,-0.90631

Using the statement:

char buffer[15];

for (i=0;i<2;i++)
{
fscanf(f_ptr1,"%i,%i,%i,%s,%f,%f,%f\n",&kdum[i],&nlinks[i],&ndih[i],buffer,&cos_xx[i],&cos_yy[i],&cos_zz[i]);
...
}

"buffer" should read only "E1", but it reads: "E1,0.13060,-0.40193,-0.90631"

I need:
kdum[0]= "1"
nlinks[0]="1"
ndih[0]="1"
buffer="E1"
cos_xx[0]="0.13060"
cos_yy[0]="-0.40193"
cos_zz[0]="-0.90631"

kdum[1]= "7"
nlinks[1]="1"
ndih[1]="1"
buffer="A25"
cos_xx[1]="0.13060"
cos_yy[1]="-0.40193"
cos_zz[1]="-0.90631"

Thanks for help

modified on Monday, February 23, 2009 6:33 PM

Stuart Dootson23-Feb-09 12:40

Re: read comma delimeted numbers and text mixture in a line

23-Feb-09 12:40

By default, reading a string using fscanf reads until the next whitespace (that'll be the EOL).

Either change the number of characters read for the string or change the string delimiter. This page of the documentation[^] gives the necessary details.

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

mrby12323-Feb-09 12:47

Re: read comma delimeted numbers and text mixture in a line

23-Feb-09 12:47

I can not change the delimiter. I have to read as they are.

Stuart Dootson23-Feb-09 13:48

Re: read comma delimeted numbers and text mixture in a line

23-Feb-09 13:48

No - change the delimiter that fscanf uses as denoting the end of the string. Did you read the documentation I pointed you at?

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

David Crow23-Feb-09 16:29

Re: read comma delimeted numbers and text mixture in a line

23-Feb-09 16:29

You'd be better off reading the whole line into a string buffer and then tokenizing it. If you can't go that route, then fscanf()'s format argument will need to change. It's easy to do, but very ugly and prone to error.

mrby12323-Feb-09 16:47

Re: read comma delimeted numbers and text mixture in a line

23-Feb-09 16:47

Hi David,

If you can give me some key code fragments for the tokenize, that would be a great help.
Thanks

David Crow24-Feb-09 2:40

Re: read comma delimeted numbers and text mixture in a line

24-Feb-09 2:40

strtok() (C)

AfxExtractSubString() (MFC)

CStringT::Tokenize() (MFC)

C++ does not have a formal string tokenizer, but it's very easy to create one using a vector to hold the tokens. You may also be able to do it via istringstream.

mrby12323-Feb-09 19:05

Re: read comma delimeted numbers and text mixture in a line

23-Feb-09 19:05

after tokenizing, how to convert char to float ?

float ff;
ff = float(strtok(string, seps));

not working

David Crow24-Feb-09 2:23

How to fix the Linking error

24-Feb-09 2:23

mrby123 wrote:
after tokenizing, how to convert char to float ?

Use atof().

SIJUTHOMASP23-Feb-09 10:33

SIJUTHOMASP

23-Feb-09 10:33

Hi,

I have tried to build a project which has written in vc++/MFC. The project last build with 7.10 version and I am trying to build it using VS.Net 2003 and VC++ compiler version 7.1.3088. When it reaches to the part "Linking" start throwing the following type of link errors,

error LNK2005: "private:_thiscall type_info::(classs type...
error LNK2005 _abort already defined in libcmtd.lib(dbgheap.obj)
etc

I am sure , no error is there with the program and it is compiling fine..I would really appreciate if anybody can show me the right way to resolve these type of errors.

Note: I have seen the existing project contains a file with ".odl" extension and I changed to ".idl" because I found while creating a new project it is creating ".idl".

Thanks In Advance.
Rahul

SoftwareDeveloper(.NET)

Re: How to fix the Linking error

Stuart Dootson23-Feb-09 12:37