cstring - C / C++ / MFC Discussion Boards

JennK24-Jan-07 3:50

24-Jan-07 3:50

I never read over my message sorry it didn't make much sense. I tried an accelerator but for some reason nothing seemed to happen. Do you know how exactly to do it???

How to get refernce count on file handle

pavan_sw24-Jan-07 1:00

pavan_sw

24-Jan-07 1:00

How to get reference count on File handle... I mean how many process opened the paticular file...

Re: How to get refernce count on file handle

KarstenK24-Jan-07 2:28

KarstenK

24-Jan-07 2:28

The best is to open a file only for reading and writing and than giving it free. Other things are bad style.

Greetings from Germany

Re: How to get refernce count on file handle

Mark Salsbery24-Jan-07 6:09

Mark Salsbery

24-Jan-07 6:09

I don't see any API that exposes a handle's reference count.

Mark

need help in computer graphics..

makaveli_0724-Jan-07 0:54

makaveli_07

24-Jan-07 0:54

i need to help in open gl programming in visual c++..can i post my doubt here..is this the right place...pls reply me as soon as possible...

Re: need help in computer graphics..

El Corazon24-Jan-07 1:51

El Corazon

24-Jan-07 1:51

makaveli_07 wrote:
can i post my doubt here..

please don't cross post... though I can understand the reasons why asking in every forum with some of the heavy handed dealings with posters recently....

If the question is about specific implimentation, how to write the code, or what code to write, or how to use the API in C++ this is the "best" not necessarily the only fit.

_________________________
Asu no koto o ieba, tenjo de nezumi ga warau.
Talk about things of tomorrow and the mice in the ceiling laugh. (Japanese Proverb)

Drawing unicode text in a dialog window

Jogeboy24-Jan-07 0:41

Jogeboy

24-Jan-07 0:41

I need to write some unicode text (using ScriptString API) in a dialog window. In main window I would place the drawing stuff in WM_PAINT, but how to deal with dialogs? Do I need to create some owner-drawn element and catch WM_DRAWITEM? If so, which owner-drawn element? I have never created custom controls, hope this won't end up with doing something that challenging.

If you can give also some advice how to make Unicode text's bacground transparent / custom color, if it is possible with a huge amount of work?

Thanks, and try to be as clarify as you can, I have very little WinAPI/ScriptString/Uniscribe/Unicode/whatever experiences.

cstring

zoobiskuit24-Jan-07 0:35

zoobiskuit

24-Jan-07 0:35

i have an assignent to read txt from a file and then remove the extra spaces in the txt. so far i can open the file and display the text. i can't come up with a way of removing the spaces. i have been advised so far to either use strcmp, which i am not sure where that is going to get me, and to 'assign' the individual text to an array and then rejoin the array without the spaces. i firstly don't know how to assign the text to an array. when i try i get an error when compiling saying that i can't convert from 'string' to 'const char*'. can someone please help. i am new so please be gentle.
my code so far:
#include <iostream>
#include <fstream>
#include <string>

using std::cout;
using std::endl;
using std::string;
using std::getline;

int main ()
{
string myStringErrors;

std::ifstream file("Lab1.txt"); //name of orignal file

if (!file)
{
std::cerr<<"Can't open file"<

Re: cstring

toxcct24-Jan-07 0:39

toxcct

24-Jan-07 0:39

use std::string::c_str() to get the C-style string contained in the std::string object

also, please use the <pre></pre> html tags in your messages when you post some code samples in the forum

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Re: cstring

zoobiskuit24-Jan-07 1:15

zoobiskuit

24-Jan-07 1:15

i am not sure what you mean by that. how do i use std::string::c_str? what goes in the ()? thanks for the code posting help.

Re: cstring

toxcct24-Jan-07 1:36

toxcct

24-Jan-07 1:36

you put nothing in the parenthesis, this function receives no parameters :

std::string str = "hello";
 
char* psz = str.c_str();
 
printf("%s", psz);

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Re: cstring

zoobiskuit24-Jan-07 2:10

zoobiskuit

24-Jan-07 2:10

thanx

Re: cstring [modified]

jhwurmbach24-Jan-07 1:16

jhwurmbach

24-Jan-07 1:16

zoobiskuit wrote:
i can't convert from 'string' to 'const char*'

This is done by using std::strings member-function c_str(), which returns a const char* to the string contained.
You can the go through this const c-string on a char by char basis and copy anything save the extra spaces to another string.

Hope this helps.

P.S.:
"The light at the end of the tunnel is the light of the oncoming train"
or
"Due to the present economic uncertanities, the light at the end of the tunnel will be switched of until further notice"
Cool | :cool:

-- modified at 7:41 Wednesday 24th January, 2007: fixed typo(notive -> notice)

"We trained hard, but it seemed that every time we were beginning to form up into teams we would be reorganised. I was to learn later in life that we tend to meet any new situation by reorganising: and a wonderful method it can be for creating the illusion of progress, while producing confusion, inefficiency and demoralisation."

-- Caius Petronius, Roman Consul, 66 A.D.

Re: cstring

S Douglas24-Jan-07 1:31

S Douglas

24-Jan-07 1:31

jhwurmbach wrote:
"Due to the present economic uncertanities, the light at the end of the tunnel will be switched of until further notive"

I'd love to help, but unfortunatley I have prior commitments monitoring the length of my grass. :Andrew Bleakley:

How do i compile a cpp program using cl.exe ?

Sakthiu24-Jan-07 0:27

Sakthiu

24-Jan-07 0:27

Hi,

I need to compile a cpp program using cl.exe

How do i compile a cpp program using cl.exe ?

Thanks.

Re: How do i compile a cpp program using cl.exe ?

toxcct24-Jan-07 0:34

toxcct

24-Jan-07 0:34

you don't need to start a new thread again and again Sleepy | :zzz:

have you tried to type cl.exe /? in command line to have the syntax ?
and as it might be a bit too huge, have you looked in the msdn ? the information is obviously there

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Re: How do i compile a cpp program using cl.exe ?

Sakthiu24-Jan-07 0:42

Sakthiu

24-Jan-07 0:42

Can you give the msdn link ?

Thanks.

Re: How do i compile a cpp program using cl.exe ?

toxcct24-Jan-07 0:43

toxcct

24-Jan-07 0:43

can't you search for it ?

here is what a search for "cl.exe command line" on the MSDN gave me : http://msdn2.microsoft.com/ru-ru/library/610ecb4h.aspx[^]

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Re: How do i compile a cpp program using cl.exe ?

Sakthiu24-Jan-07 1:03

Sakthiu

24-Jan-07 1:03

I thought you would have different ideas .

Thats d reason i asked you that link.

I have seen that link before. Still i need more articles about it.

Thanks.

Nice things do nice works

Re: How do i compile a cpp program using cl.exe ?

toxcct24-Jan-07 1:37

toxcct

24-Jan-07 1:37

what don't you have in it ?
what are you trying to do that it doesn't explain ?

if you don't give us a concrete example, we won't be able to help much

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Re: How do i compile a cpp program using cl.exe ?

David Crow24-Jan-07 4:27

David Crow

24-Jan-07 4:27

Sakthiu wrote:
How do i compile a cpp program using cl.exe ?

How about:

cl somefile.cpp

Obviously this is a very simplistic example. You'll need to add your own compiler switches (as has already been given to you).

"Approved Workmen Are Not Ashamed" - 2 Timothy 2:15

"Judge not by the eye but by the heart." - Native American Proverb

help in win32 for communication between child dialogs [modified]

amitmistry_petlad 24-Jan-07 0:05

amitmistry_petlad

24-Jan-07 0:05

Hello!!
i have multiple childs in my application.
some calls at click events and some are static.
I want to communicate two child dialog. event created dialog communicate with static dialog
e.g.
suppose i have one child dialog which contian the listview control (static dialog or global dialog).
now when i click on menu item dialog .its create new dynamic dialog which contain combo box.
on the CBN_SELCHANGE event. i open the fileopen dialog and i want to add file in the listview containg dialog(static dialog).

can any body help me?

Thank you

modified at 8:13 Wednesday 24th January, 2007

For that i have written the following code.

POINT point; 
point.x=126;
point.y=83; 
							
HWND hwndListboxDlg = ChildWindowFromPoint(GetParent(hDlg),point); 
HWND hwndListbox = GetDlgItem(hwndListboxDlg,IDC_LIST4);
LRESULT iCount=ListView_GetItemCount(hwndListbox);

When i debug the application its find the handle for hwndListboxDlg ,but unable to find the
IDC_LIST4.

Amit

-- modified at 8:20 Wednesday 24th January, 2007

[GDI] x-offset when using Graphics::DrawString(...) [modified]

_NielsB24-Jan-07 0:01

_NielsB

24-Jan-07 0:01

Hello!

I am using the following Function to draw text to a screen:

Status DrawString( const WCHAR *string,
    INT length,
    const Font *font,
    const PointF &origin,
    const StringFormat *stringFormat,
    const Brush *brush
);

Works fine, but there is one major problem : even if I use PointF(0,0) as origin, the text is displayed with an x-offset (the concrete width in pixel seems to depend on the Font-Object I use within the DrawString - Function).

Any Solution about that? Is this a known bug or even a feature? Wink | ;)

Thanks in advance!

-- modified at 6:43 Wednesday 24th January, 2007

Re: [GDI] x-offset when using Graphics::DrawString(...)

Mark Salsbery24-Jan-07 6:24

Mark Salsbery

24-Jan-07 6:24

_NielsB wrote:
the text is displayed with an x-offset

How much of an x offset?

Re: [GDI] x-offset when using Graphics::DrawString(...)

_NielsB25-Jan-07 0:58

_NielsB

25-Jan-07 0:58

As I wrote, it seems to depends on the Font that is in use within the function call.

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