C / C++ / MFC Discussion Boards

Jason Hihn4-Feb-02 3:41

4-Feb-02 3:41

use 'pico' It is very friendly. I use it. I just open a few telnet (or ssh windows, preferably) and launch pico in each for each file I'll be working on. You files are then stored on your unix host. Additionally I keep another window just for running commands and the compiler in.

You can also use Ultra-edit, which can save to FTP as if it were local.

Or you can develop the code on your machine entirely via Cygwin (search google) It is a complete unix environment (including compilers) for Win32. Then you can still use your .Net editor, but you'll still need a window to compile in.

Happy coding

Re: Best UNIX/Linux C++ Editor

Ramon Casellas4-Feb-02 4:40

Ramon Casellas

4-Feb-02 4:40

Something useful may be :

Kdevelop from the KDE group www.kde.org
"The KDevelop-Project was raised in 1998 to build up an easy to use C/C++ IDE (Integrated Development Enviroment) for Unix. Since then, the KDevelop IDE is publicly available under the GPL and supports KDE/Qt, GNOME, plain C and C++ projects..."

http://www.kdevelop.org
http://www.kdevelop.org/graphics/pic_corner/kdevelop-2.0.gif

You may need to install some support libraries from the KDE project. Also, recent versions of QT libraries (portable GUI library, v.3) come with something like a QEditor...

From the web page:
Before you start compiling your freshly downloaded KDevelop version, make sure that you have installed the following programs. Mind that you can get strange errors, if you use older versions. Program/Library Source
for KDevelop 1.3 an installed KDE 1.x http://www.kde.org
for KDevelop 2.0.2 an installed KDE 2.2.x http://www.kde.org
g++2.8/egcs 1.0.3 (or compatible) www.gnu.org
GNU make www.gnu.org
perl 5.004 www.perl.com
autoconf 2.13/automake 1.4
flex 2.5.4

'WS_EX_LAYERED' : undeclared identifier

Sprudling31-Jan-02 17:04

Sprudling

31-Jan-02 17:04

Why am I getting this error? I've got Windows XP and I just downloaded and installed the Platform SDK from Microsoft's website (I didn't include the 64bits stuff thought). In MSDN (July 2000) says that WS_EX_LAYERED is for Windows 2000 only, but don't that include XP too; or doesn't it?

Anyway, if this really is just for Windows 2000, how do I create transparent windows and fancy stuff like that?

Sprudling Confused | :confused:

PS! I have the same problem with the function 'SetLayeredWindowAttributes', which also requires Windows 2000.

Re: 'WS_EX_LAYERED' : undeclared identifier

Rick York31-Jan-02 17:24

Rick York

31-Jan-02 17:24

In the on-line MSDN, it says W2000/XP. XP was not out yet in July 2000. I checked my version of winuser.h and I don't have it defined. I have found that when you have version-specific definitions they are usually protected by target version macros.

Check your headers (find in files) for WS_EX_LAYERED and see what target version macros it is hidden by and then define them in your project options.

Usually the macro is of the form (WINVER >= 0x0z00). If you define WINVER to be 0x0500 then you should be okay. This will target W2000 which could cause problems if your app is to run on earlier versions.

Re: 'WS_EX_LAYERED' : undeclared identifier

Sprudling31-Jan-02 18:05

Sprudling

31-Jan-02 18:05

Now I understand... The headers included with VS 6.0 didn't define WS_EX_LAYERED anywhere. However 'winuser.h' in the Microsoft SDK directory did. I thought the Platform SDK somehow integrated itself to VS 6.0. Atleast it told me it did when I installed it, but I guess that didn't work. So, how do I do this manually?

Sprudling

Re: 'WS_EX_LAYERED' : undeclared identifier

Sprudling31-Jan-02 18:12

Sprudling

31-Jan-02 18:12

Nevermind... It was actually integrated to VS 6.0. I was just me not defining _WIN32_WINNT to something like 0x0500 or above.

Thank you =)

Sprudling

Re: 'WS_EX_LAYERED' : undeclared identifier

Michael Dunn31-Jan-02 18:49

Michael Dunn

31-Jan-02 18:49

Your answer's in the VC forum FAQ.

--Mike--
"Everyone has figured out what 'service pack' really means, so they had to go and change the language. Perhaps this is what Bill was talking about in the 'security is top priority' letter."
-- Daniel Ferguson, 1/31/2002
My really out-of-date homepage
Sonork - 100.10414 AcidHelm
Big fan of Alyson Hannigan.

Anyone Help me? is office automation about....

Kind31-Jan-02 16:14

Kind

31-Jan-02 16:14

I do Excel Automation used "EXCEL9.OLB" in VC++.
but i can't show dialog that new document dialog or chart dialog.

how can do that??

Confused | :confused:

Re: Anyone Help me? is office automation about....

wangyiming31-Jan-02 19:40

wangyiming

31-Jan-02 19:40

Create View who can contian ExcelObject, put the view int the Dialog

convert string to int??

31-Jan-02 15:55

CAN ANYONE tell me please how do you convert a string that you read from standard input to an int.
thank you.

Re: convert string to int??

Tim Smith31-Jan-02 16:03

Tim Smith

31-Jan-02 16:03

atol () is one way.

Tim Smith
Descartes Systems Sciences, Inc.

thanks Tim

marouane miftah el kheir31-Jan-02 16:52

marouane miftah el kheir

31-Jan-02 16:52

you saved my life! Blush | :O

Re: convert string to int??

wabc31-Jan-02 19:31

wabc

31-Jan-02 19:31

you can use "scan" function too!

A stupid question about "Unit" and "Unit conversion" for IPicture stuff..

31-Jan-02 14:06

Hi, everybody,

This may be a stupid question, but I really hope somebody to help me...
I got some trouble about the "unit" and "unit conversion" for rendering an image.

I have read some people's share codes on this web site. Those codes are all for image rendering with the COM interface IPicture. Here are my questions.

1. IPicture::get_Width: Returns the current width of the picture in the picture object. (from MSDN), the API is as follows:

HRESULT get_Width( OLE_XSIZE_HIMETRIC* pwidth //Receives a pointer to width );

My question is, what kind of unit we get from pwidth ? I mean, is pwidth in inch ? or in mini-meter ? or anything else ? Does this IPicture use MM_HIMETRIC coordinate system ?

2. If there are some code segment related to calculate the dimension (in pixels) of an image,

HIMETRIC_INCH is 2540

long hmWidth;
long hmHeight;
m_pPicture->get_Width(&hmWidth); /// m_pPicture is of type pointer to ///IPicture

m_pPicture->get_Height(&hmHeight);

rcResult.cx = MulDiv(hmWidth, pDC->GetDeviceCaps(LOGPIXELSX), HIMETRIC_INCH);
rcResult.cy = MulDiv(hmHeight, pDC->GetDeviceCaps(LOGPIXELSY), HIMETRIC_INCH);

Could anybody explain why HIMETRIC_INCH (2540) is used above ? And explain more about the above formula ? Is hmWidth (or hmHeight) in mini-meter ?

Thanks in advance ! Any reponse will be appreciated !

Re: A stupid question about "Unit" and "Unit conversion" for IPicture stuff..

wangyiming1-Feb-02 15:31

wangyiming

1-Feb-02 15:31

change of pixels to inc or cm

A question regarding SQL server

User 988531-Jan-02 13:43

User 9885

31-Jan-02 13:43

Does SQL Server process two commands through the same connection in parallel or does it perform the commands in a sequential manner (FIFO)? I am using the OLEDB consumer template class (CSession) for connecting to the SQL Server.

I have been trying to locate some material on this for the past one week, but was unsuccessful. I would appreciate any help in this regard very much.

Thank you

Thomas

modified 29-Aug-18 21:01pm.

Re: A question regarding SQL server

Christopher Lord2-Feb-02 15:25

Christopher Lord

2-Feb-02 15:25

Don't quote me, I'm just guessing here, but I would imagine it does something like the following.

A statement parser in its own thread recieves SQL, breaks it into tokens, and converts it to a bytecode or object placed in a quenue.

A pool of workers picks items off this quenune in some manner, perhaps FIFO, perhaps according to a 'statement-complexity' algo so quick requests go through first or something. It gets the data and creates a response object or bytecode and puts it in an output quenue.

Finally, the output engine pops items off and sends the response back to the client.

There might be steps which are better, but with my knowledge, thats how i would build a sql engine.

// Rock

Visual Assist 5b

Jon Sagara31-Jan-02 13:37

Jon Sagara

31-Jan-02 13:37

Has anyone used Visual Assist 5 for VS.NET? I know it's still in beta right now. Is it stable and worth using?

Jon Sagara

What about ?

S van Leent31-Jan-02 12:28

S van Leent

31-Jan-02 12:28

The following class, is a class to make register changes easy. But there is a memory leak, somewhere, and I can't locate it, help me.

CRegisterEx.h

#pragma once

#include "stdafx.h"

class CRegisterEx
{
public:
CRegisterEx(LPCSTR path);
~CRegisterEx(void);

public:
void WriteString(LPCSTR str, LPCSTR subKey = NULL);
LPCSTR ReadString(LPCSTR subKey = NULL);
void WriteInteger(int i, LPCSTR subKey = NULL);
int ReadInteger(LPCSTR subKey);
};

CRegisterEx.cpp

#include "StdAfx.h"
#include "registerex.h"
#include <stdlib.h>

LPCSTR pt;

CRegisterEx::CRegisterEx(LPCSTR path)
{
pt = path;
path = NULL;
}

CRegisterEx::~CRegisterEx(void)
{
pt = NULL;
}

// Main course, are made for public use, but are also used inside

void CRegisterEx::WriteString(LPCSTR str, LPCSTR subKey)
{
CString insidePath = pt;
if (subKey)
{
insidePath = insidePath + "\\" + subKey;
}
LPCSTR realPath = (LPCSTR)insidePath;
RegSetValue(HKEY_CURRENT_USER, _T(realPath), REG_SZ, _T(str), sizeof(realPath));
realPath = NULL;
}

LPCSTR CRegisterEx::ReadString(LPCSTR subKey)
{
CString insidePath = pt;
if (subKey)
{
insidePath = insidePath + "\\" + subKey;
}
LPCSTR realPath = (LPCSTR)insidePath;
TCHAR str[2048];
LONG strValue = sizeof(str);
RegQueryValue(HKEY_CURRENT_USER, _T(realPath), str, &strValue);
#pragma warning (disable : 4172)
return (LPCSTR)str;
}

// now we go real public

void CRegisterEx::WriteInteger(int i, LPCSTR subKey)
{
char buffer[2048];
_itoa(i, buffer, 10);
LPCSTR str = (LPCSTR)buffer;
WriteString(str, subKey);
}

int CRegisterEx::ReadInteger(LPCSTR subKey)
{
LPCSTR str = ReadString(subKey);
int i = atoi(str);
return i;
}

N.B. I use CString, so you should load the MFC/ATL/WTL version of it, else, you must change this yourself (if you did so, please notify me, so it's fully win32)

LPCSTR Dutch = "Double Dutch Smile | :)

Re: Register class, but I can't find memory leak of 1 byte, please help!

Joaquín M López Muñoz1-Feb-02 9:19

Joaquín M López Muñoz

1-Feb-02 9:19

Your code has several bugs: (maybe one of them is causing the leak)

RegSetValue(HKEY_CURRENT_USER, _T(realPath), REG_SZ, _T(str), sizeof(realPath));

Here, sizeof(realPath) equals 4 (the size of a pointer) which is not what you want; use srtlen(realPath)instead.

TCHAR str[2048];
LONG strValue = sizeof(str);
RegQueryValue(HKEY_CURRENT_USER, _T(realPath), str, &strValue);
#pragma warning (disable : 4172)
return (LPCSTR)str;

Here you're returning a pointer to a char buffer constructed on the stack; this pointer becomes invalid as soon as the function exits (the buffer goes out of scope). I suggest you change the prototype of ReadString to return a CString and rewrite that portion of code like this:

TCHAR str[2048];
LONG strValue = sizeof(str);
RegQueryValue(HKEY_CURRENT_USER, _T(realPath), str, &strValue);
#pragma warning (disable : 4172)
return CString(str); // this takes care of allocating dynamic memory (which does not go out of scope)

Hope this helps.

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

Re: Register class, but I can't find memory leak of 1 byte, please help!

S van Leent1-Feb-02 10:43

S van Leent

1-Feb-02 10:43

Well, the problems are solved. I will upload the finished CRegisterEx when there are enough methods to be used.

LPCSTR Dutch = "Double Dutch Smile | :)

Learning STL

31-Jan-02 11:37

Can anyone recommend a good book for a c++ programmer wanting to learn STL?

Thanks

OMG | :OMG:

Re: Learning STL

Jon Sagara31-Jan-02 12:20

Jon Sagara

31-Jan-02 12:20

Christian Graus recommended the following:

"And you'll never regret it. Do you have any books ? I recommend STL tutorial
and Reference or Generic Programming and the STL ( probably the latter as it's a
better reference and moves faster ), and you will *need* Effective STL by Scott
Meyers, probably the best book I bought this year."

HTH

Jon Sagara

What about ?

Lost Macro/Add-in tab

David Chamberlain31-Jan-02 11:31

David Chamberlain

31-Jan-02 11:31

I'm getting back to development mode, and I find that the Tools/Customize window in VS6 no longer has a Macro/Add-in tab. Anyone have an idea what happened? The only tools that I know I was using were the Resource Organizer and the code-reformatter, both available on CP.

I loaded SP5 again, which was already installed, and re-booted, and still nothing.

Any words of wisdom (applicable to this problem) would be appreciated.

Dave

"You can say that again." -- Dept. of Redundancy Dept.

MSDN Jan 2002 with Visual Studio 6?

Ron Olson31-Jan-02 10:05

Ron Olson

31-Jan-02 10:05

Hey all-

For several years now, the standard M.O. for me has been that when a new version of MSDN was released, I would uninstall the previous version, then install the new version, and all would be ok from VS' standpoint.

I just installed MSDN for Jan2002 and have been greeted by a "MSDN not installed. Please install MSDN" error from within VisualStudio 6. I chose the same directory and such as I always have, but all of a sudden VS isn't finding it. Presumably it *should* work with 6, as I have found nothing in the documentation to say that it doesn't work, but perhaps I have to fiddle with the registry to have VS find it?

Thanks for any info,

Ron

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