How to get the width and height of the Form Template - C / C++ / MFC Discussion Boards

peterchen4-Feb-10 23:59

4-Feb-10 23:59

The comma operator evaluates bot operands, and evaluates to the result of the second one.

So the first operand is evaluated only for its side effects. One common use is:

<br />
while ( (c=getnextthingie(), c!=EOF) )<br />
{<br />
}<br />

here, the first operand has the side effect of calling getnextthingie and assigning the result to c. c!=EOF is evaluated as loop condition.

Personally, I love the idea that Raymond spends his nights posting bad regexs to mailing lists under the pseudonym of Jane Smith. He'd be like a super hero, only more nerdy and less useful. [Trevel]
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Re: C++ return value from function

David Crow4-Feb-10 8:33

David Crow

4-Feb-10 8:33

uus831 wrote:
Can anyone explain what is actually happening in the code above, and why it is even possible to compile such a code? what does return a,b,c actually implies?

See here and here.

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Re: C++ return value from function

fat_boy5-Feb-10 1:17

fat_boy

5-Feb-10 1:17

Er, yeah, if you COULD declare your function as:

int, int, int Test(int a, int b, int c);

You might get 12 bytes on the stack for your return values, but C isnt made this way!

If you realy want to wedge more values into the 32 bits you are given you could cast say a short and two chars into an int.

return (x << 16 + y << 8 + z);

for example, and then pull it apart in the calling code.

Morality is indistinguishable from social proscription

CMiniFrameWnd

Vaclav_4-Feb-10 4:25

Vaclav_

4-Feb-10 4:25

I am using main "standard" property sheets for tabbed application.
I would like to have another property sheet embedded in the main tab(s).
I got as far as using CStatic variable in the page, but now I am stuck.
I tried this (snippet)

     position = pDoc->GetFirstViewPosition();
     COpenHRView *pOpenHR = (COpenHRView*) pDoc->GetNextView(position);

     if(pOpenHR->m_pPropFrame1);
     {
          m_sstv.Detach();     // added this when Attach asserted – no go asserts
          m_sstv.Attach(pOpenHR->m_pPropFrame1->GetSafeHwnd()); // asserts– attach only once
     }

     return CpropertyPage::OnSetActive();

Thanks for reading. Any constructive help as always is appreciated.

CppUnit testing

gregarion4-Feb-10 2:40

gregarion

4-Feb-10 2:40

Hey guys, i am trying to test one of my classes using cppunit.

the class is suppose to extract data out of a certain text file and then displays it...

Code:

void readNasdaq::Nasdaq(fstream&  myfile)
{
    string templine ;
    string line;

    while (getline (myfile,templine) )
    {
        line.append(templine);
    }

    int NasdaqValueID = line.find ("id=\"yfs_l10_^ixic\">" , 0) ;
    int NasdaqValueCount = line.find ("</span></td><td class=\"ticker_down\"><span class=\"streaming-datum\" id=\"yfs_c10_^ixic\">" , 0) ;

    int LocationNasdaqValue = NasdaqValueID + 19 ;
    int LengthOfNasdaqValue = NasdaqValueCount - LocationNasdaqValue ;

string NasdaqValue = line.substr( LocationNasdaqValue , LengthOfNasdaqValue ) ;

   cout << "  " << endl ;
cout << "The Value Index of Nasdaq is " << NasdaqValue << endl ;


int NasdaqValueChangeID = line.find ("id=\"yfs_c10_^ixic\">" , 0 ) ;
int NasdaqValueChangeCount = line.find ("</span></td><td class=\"right_cell ticker_down\"><span class=\"streaming-datum\" id=\"yfs_pp0_^ixic\">" , 0) ;

int LocationNasdaqValueChange = NasdaqValueChangeID + 19 ;
int LengthOfNasdaqValueChange = NasdaqValueChangeCount - LocationNasdaqValueChange ;

string NasdaqValueChange = line.substr (LocationNasdaqValueChange , LengthOfNasdaqValueChange ) ;

cout << "The Value Change for Nasdaq is " << NasdaqValueChange << endl ;

the problem i have with my cppunit is how am i suppose to read the value being outputted and test it...

Code:

#include "financetest.h"
#include "finance.h"



CPPUNIT_TEST_SUITE_REGISTRATION (FinanceTest);



void FinanceTest::setUp()
{
    New = " ";
    NewValue = " " ;


}

void FinanceTest::tearDown()
{
    
}

void FinanceTest::testEquals()
{
    
    }

How can i continue from here.. really need some help from this

Re: CppUnit testing

David Crow4-Feb-10 4:46

David Crow

4-Feb-10 4:46

I know it's early, but I'm not seeing what readNasdaq::Nasdaq() has to do with your question.

As I understand it, CppUnit is a framework for creating unit tests in C++. What does this have to do with extracting data out of a text file and displaying it?

Re: CppUnit testing

gregarion4-Feb-10 4:48

gregarion

4-Feb-10 4:48

Sorry, what i meant was to show my class and how it get the information i want to be displayed. I got to use cppunit to test this class to show that it is extracting the right information.

For example, if the class extracts "a" , i will have to compare it to the cppunit test and see if it has the same value also.

The problem i am facing is how do i do a test based on the output.

How to get the width and height of the Form Template

Joschwenk6664-Feb-10 2:21

Joschwenk666

4-Feb-10 2:21

Hallo,

I use a tabbed Dialog, which shows several Dialogs in it. The tabbed Dialog is resized to the size of its MDI Window.

The problem is, that if the MDI Window is resized to a smaller size then the dialog in the tabbed control, the dialog in the tabbed control is not shown completely.

So I want to know not the window rect of the dialog in the tabbed dialog, but the size of my form template, which I designed in the form editor of Visual C++ 6

So my main question is:

Is it possible to get the height and with of my form as it is in the editor, so to speak the size of my, for example, IDD_MAIN_DIALOG resource my CDialog derived class?

Thank you for your help!

Re: How to get the width and height of the Form Template

Abhi Lahare4-Feb-10 6:33

Abhi Lahare

4-Feb-10 6:33

use GetWindowRect() function to get rectangle for the dialog box and then a simple math will solve your problem

Re: How to get the width and height of the Form Template

Joschwenk6664-Feb-10 10:08

Joschwenk666

4-Feb-10 10:08

But the Problem is, that I get the current size of my form with GetWindowRect(). If it has already been scaled to small, some of the form controls will not be shown...I need the height and width of my Form as I see it in the form Editor...

Re: How to get the width and height of the Form Template

Abhi Lahare4-Feb-10 10:49

Abhi Lahare

4-Feb-10 10:49

One way I could think is store your original dialog rectangle in some variable and use those values in InitDialog() Function. The other dirty way, you can check the the dialog box co-ordinates in .rc file. and set the Dialogbox rectangle to those value in InitDilaog fuction().
HTH

Re: How to get the width and height of the Form Template

Graham Breach4-Feb-10 11:09

Graham Breach

4-Feb-10 11:09

The dialog units are not in pixels though - see the GetDialogBaseUnits()[^] function for details.

How to convert a char array to CString?

Member 43997713-Feb-10 23:12

Member 4399771

3-Feb-10 23:12

Hi All,

How to convert a char array into CString? I have one array like this

char charr[1000];
....
drwFile.Read(charr,656); //reading some characters from the file

CString str;

how to store the charr array in to str?

Regards,
Kumar

Re: How to convert a char array to CString?

Cedric Moonen3-Feb-10 23:24

Cedric Moonen

3-Feb-10 23:24

The easy answer is: you don't have to convert, just assign it. But it depends on your UNICODE setting. I suggest you read this article[^] to get a better understanding on character encodings. This will help you a lot in the future.

Cédric Moonen
Software developer

Charting control [v3.0]
OpenGL game tutorial in C++

Re: How to convert a char array to CString?

Member 43997713-Feb-10 23:46

Member 4399771

3-Feb-10 23:46

Thanks Cedric! The given article is very help full

Can't we convert the char array like this?

Cstring str(charr); //charr is char array

Regards,
Kumar

Re: How to convert a char array to CString?

CPallini3-Feb-10 23:47

CPallini

3-Feb-10 23:47

Yes, the CString constructor is overloaded to accept that.
Smile | :)

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Re: How to convert a char array to CString?

Cedric Moonen3-Feb-10 23:58

Cedric Moonen

3-Feb-10 23:58

As I said in my previous reply, it all depends on your UNICODE setting.
BTW, why don't you just check ? It's one line of code and you can easily verify if it compiles or not. If UNICODE is turned on, the code won't compile.

Cédric Moonen
Software developer

Charting control [v3.0]
OpenGL game tutorial in C++

Re: How to convert a char array to CString?

CPallini4-Feb-10 0:02

CPallini

4-Feb-10 0:02

Nope. It will work. CString constructor automatically handles the conversion,
see [^].
Smile | :)

Re: How to convert a char array to CString?

Code-o-mat4-Feb-10 0:33

Code-o-mat

4-Feb-10 0:33

Just be carefull, your char array has to be null-terminated to be used to initialize a CString like that or even if you use the = operator ( CString str; str = charr; ). Othwerwise it will keep on reading characters till it finds a null character somewhere after your array and which either results in access violation OR you get garbage in your str.

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socket buffer problem

trioum3-Feb-10 23:01

trioum

3-Feb-10 23:01

I have client and server . hundred of client connect to the server . and I am serving the data to the client
but not every client is getting data . why it is happening . I think this is due to winsock internal buffer
is there way to increase winsock internal buffer . i am using TCP/IP socket

Trioum

Re: socket buffer problem

CPallini3-Feb-10 23:46

CPallini

3-Feb-10 23:46

trioum wrote:
I think this is due to winsock internal buffer

I think not.
Smile | :)

Re: socket buffer problem

trioum4-Feb-10 0:23

trioum

4-Feb-10 0:23

then please suggest me some solution

Trioum

Re: socket buffer problem

CPallini4-Feb-10 0:33

CPallini

4-Feb-10 0:33

Without seeing your code I may just suggest you to fix it...
Smile | :)

Re: socket buffer problem

Moak4-Feb-10 0:38

Moak

4-Feb-10 0:38

I agree with CPallini, this is unlikely to be related to an internal buffer. We would need more detailed information to help you with your problem, here are some suggestions to look at:

1) Check in the server code that you are actually sending complete data package to every client, e.g. by comparing that the return value from send() is equal to the number of bytes and that there were no errors. A server should be able to handle a couple of thousand clients, make sure you are not running into a OS specific upper limit.
2) Check in the client code that you are actually connected to the server and debug received data, e.g. print out the number of received bytes from recv(). TCP is a stream oriented protocol, which means that when the server sends 100 bytes you might get 100 bytes or chunks of 2 times 50 bytes etc (this could confuse the receiving side).
3) If you are new to network programming it is always good to start with working examples. Have a look at Beej's guide to networking programming[^] and Winsock Programmer's FAQ[^], there are client/server examples in section 6.

Let me know if that helps Smile | :)

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Re: socket buffer problem

trioum4-Feb-10 0:52

trioum

4-Feb-10 0:52

I am using windows server 2003 and currently 200 clients connected to it regularly.
all clients are connected fine. I am sending the data to the clients frequently .
I am getting data from the data base .and using the timer of 100 miliseconds . as data change
I send the data to the client in loop one by one . every time it monitor on 100 ms for change in
database. some clients not getting data . and on next timer they get the data . problem is
occuring to any client randomly .

Trioum

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