I feel inadequate ... CButton question. - C / C++ / MFC Discussion Boards

Re: ceil and floor?

C^hris L^osinger27-Feb-03 11:24

C^hris L^osinger

27-Feb-03 11:24

try math.h

-c

When history comes, it always takes you by surprise.

Bobber!

Re: ceil and floor?

Gary Kirkham27-Feb-03 11:24

Gary Kirkham

27-Feb-03 11:24

Did you include the following header file

#include <math.h>

Gary Kirkham

A working Program is one that has only unobserved bugs

I thought I wanted a career, turns out I just wanted paychecks

Re: ceil and floor?

Gary Kirkham27-Feb-03 11:27

Gary Kirkham

27-Feb-03 11:27

I didn't like the greater than less than symbols

#include "math.h"

Gary Kirkham

A working Program is one that has only unobserved bugs

I thought I wanted a career, turns out I just wanted paychecks

Re: ceil and floor?

Jörgen Sigvardsson2-Mar-03 13:30

Jörgen Sigvardsson

2-Mar-03 13:30

You can escape < as < and > as > Smile | :)

--
It's not unusual to be picked up by a klingon woman
It's not unusual to have fun with a klingon
When I see you kicking me around
It's not unusual to see me cry, I wanna die

stdafx.h question

Anonymous27-Feb-03 11:09

Anonymous

27-Feb-03 11:09

I understand that all *.cpp files in Visual C++ must
start with ...

<br />
#include "stdafx.h"<br />

... how can I make my C++ code portable with such
a restriction?

I tried this ...

<br />
#ifndef GNU<br />
#include "stdafx.h"<br />
#endif<br />

... but that doesn't seem to work.

What should I do if I want my code to compile under
more than ONE compiler?

Re: stdafx.h question

Jim A. Johnson27-Feb-03 11:13

Jim A. Johnson

27-Feb-03 11:13

For portable files you probably don'twant to use stdafx.h, which means no precompiled headers. Just set the Precompiled Headers switch for such files to "Not using precompiled headers".

Re: stdafx.h question

Anonymous27-Feb-03 11:16

Anonymous

27-Feb-03 11:16

thanks!

okay how do I do that?

I feel inadequate ... CButton question.

Maximilien27-Feb-03 10:15

Maximilien

27-Feb-03 10:15

I fell so dumb and inadequate today ... yesterday was such a good day!

I have a CButton derived button in a dialog ( a dialog app ) :

// .h
#include "MyButton.h"
//{{AFX_DATA(CTestColorControlDlg)
 CMyButton m_HelpButton;
//}}AFX_DATA

and

// .cpp 
...
void CTestColorControlDlg::DoDataExchange(CDataExchange* pDX)
{
 CDialog::DoDataExchange(pDX);
 //{{AFX_DATA_MAP(CTestColorControlDlg)
 DDX_Control(pDX, IDC_HELP_BUTTON, m_HelpButton);
 //}}AFX_DATA_MAP
}
...

My button is working nicelly, but I don't receive and message for WM_CREATE, or even the OnCreate virtual is not called.

I need to change the button size, from inside the class, at creation time; I don't want to have to manually create the button in the dialog's OnInitDialog just to do it.

Thank yo for helping a programmer in need!

Maximilien Lincourt
For success one must aquire one's self

Re: I feel inadequate ... CButton question.

Dave Bryant27-Feb-03 10:20

Dave Bryant

27-Feb-03 10:20

You don't get the WM_CREATE message because windows creates a normal button first, and then subclasses it in the first call to the DoDataExchange method. When your class is attached to the button, the button has already been created.

You may be able to do want you want in the PreSubclassWindow() virtual method - this is called after the HWND is attached to your button, but before the window procedure has been replaced.

Dave

Re: I feel inadequate ... CButton question.

PJ Arends27-Feb-03 10:21

PJ Arends

27-Feb-03 10:21

Controls created via a dialog template do not recieve the WM_CREATE message. Handle all control initialization in PreSubclassWindow() instead.

HTH

Sonork 100.11743 Chicken Little

"You're obviously a superstar." - Christian Graus about me - 12 Feb '03

Within you lies the power for good - Use it!

Re: I feel inadequate ... CButton question.

Maximilien27-Feb-03 10:24

Maximilien

27-Feb-03 10:24

PJ Arends wrote:
use PreSubclassWindow() instead

Thank You! Oh ! I Love You!!!

Max.

Maximilien Lincourt
For success one must aquire one's self

Re: I feel inadequate ... CButton question.

PJ Arends27-Feb-03 10:35

PJ Arends

27-Feb-03 10:35

Maximilien wrote:
Oh ! I Love You!!!

hmmm, shall we meet for a drink later?;)

Sonork 100.11743 Chicken Little

"You're obviously a superstar." - Christian Graus about me - 12 Feb '03

Within you lies the power for good - Use it!

Re: I feel inadequate ... CButton question.

palbano27-Feb-03 10:33

palbano

27-Feb-03 10:33

u devil u

"No matter where you go, there your are..." - Buckaoo Banzi

-pete

Get desktop folder of all users in computer and their username ?

Wizard_0127-Feb-03 10:10

Wizard_01

27-Feb-03 10:10

Hi, I have simple problem. I need get all users in my computer and for all users get special folder. Ist possible ? (no Common Folder etc)

Wiizi Smile | :)

Re: Get desktop folder of all users in computer and their username ?

Mazdak27-Feb-03 10:15

Mazdak

27-Feb-03 10:15

Wizard_01 wrote:
I need get all users in my computer

NetLocalGroupGetMembers
NetLocalGroupEnum

Mazy

"And the carpet needs a haircut, and the spotlight looks like a prison break
And the telephone's out of cigarettes, and the balcony is on the make
And the piano has been drinking, the piano has been drinking...not me...not me-Tom Waits

Re: Get desktop folder of all users in computer and their username ?

TigerNinja_28-Feb-03 4:28

TigerNinja_

28-Feb-03 4:28

Wizard_01 wrote:
and for all users get special folder

Look at SHGetFolderPath on MSDN, link below

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/shellcc/platform/shell/reference/functions/shgetfolderpath.asp[^]

R.Bischoff | C++

.NET, Kommst du mit?

Using SHGetFolderPath

TigerNinja_27-Feb-03 9:47

TigerNinja_

27-Feb-03 9:47

Hello,
I am trying to use SHGetFolderPath in MFC app, however, I get error C2065: 'SHGetFolderPath' : undeclared identifier.

I have latest SDK, WinXP, and included the required header file shlobj.h.

if(SUCCEEDED(SHGetFolderPath(NULL, CSIDL_HISTORY, NULL, 0, lpPath)))<br />
		{<br />
			::SetCurrentDirectory(lpPath); 	//set current directory<br />
		}

Why can't the linker find this shell function?

R.Bischoff | C++

.NET, Kommst du mit?

Re: Using SHGetFolderPath

Alvaro Mendez27-Feb-03 10:07

Alvaro Mendez

27-Feb-03 10:07

This is strange. According to my version of MSDN (October 2000), ShGetFolderPath is included in shfolder.h/shfolder.lib. However, my version of VC6 does not come with a shfolder.h. I also did a search for the function in any of the header files, and nothing.

Confused | :confused:

Regards,
Alvaro

The world is a dangerous place, not because of those who do evil, but because of those who look on and do nothing. -- Albert Einstein

Re: Using SHGetFolderPath

palbano27-Feb-03 10:22

palbano

27-Feb-03 10:22

don't know what version of MSDN you have but mine shows

Windows NT/2000: Requires Windows NT 4.0 or later.
Windows 95/98/Me: Requires Windows 95 or later.
Header: Declared in shlobj.h.
Import Library: shell32.lib.

"No matter where you go, there your are..." - Buckaoo Banzi

-pete

Re: Using SHGetFolderPath

PJ Arends27-Feb-03 10:33

PJ Arends

27-Feb-03 10:33

I did a search for *.h file containing 'SHGetFolderPath' and I got it in ShlObj.h and ShFolder.h in Feb 2001 PSDK (last one I got for VC6) and also the same two files in the PSDK that came with VS.NET.

Sonork 100.11743 Chicken Little

"You're obviously a superstar." - Christian Graus about me - 12 Feb '03

Within you lies the power for good - Use it!

Re: Using SHGetFolderPath

TigerNinja_28-Feb-03 4:25

TigerNinja_

28-Feb-03 4:25

PJ Arends wrote:
I did a search for *.h file containing 'SHGetFolderPath'

I found the following in ShlObj.h

SHFOLDERAPI SHGetFolderPathA(HWND hwnd, int csidl, HANDLE hToken, DWORD dwFlags, LPSTR pszPath);<br />
SHFOLDERAPI SHGetFolderPathW(HWND hwnd, int csidl, HANDLE hToken, DWORD dwFlags, LPWSTR pszPath);<br />
#ifdef UNICODE<br />
#define SHGetFolderPath  SHGetFolderPathW<br />
#else<br />
#define SHGetFolderPath  SHGetFolderPathA<br />
#endif // !UNICODE

Sanity check:
I included the shlobj.h file, also, that file is in the SDK, and the SDK source files are in my included paths to search for while linking code.

it still doesn't work, am I missing something obvious?

TIA

R.Bischoff | C++

.NET, Kommst du mit?

Re: Using SHGetFolderPath

PJ Arends28-Feb-03 6:13

PJ Arends

28-Feb-03 6:13

The lines you quoted above are enclosed within:

#if (_WIN32_IE >= 0x500)
...
#endif      // _WIN32_IE >= 0x500

Ensure you have _WIN32_IE properly defined.

HTH

Sonork 100.11743 Chicken Little

"You're obviously a superstar." - Christian Graus about me - 12 Feb '03

Within you lies the power for good - Use it!

Re: Using SHGetFolderPath

Gary R. Wheeler1-Mar-03 2:41

Gary R. Wheeler

1-Mar-03 2:41

If you are getting error C2065, that is a compiler error, not a linker error. You need to make sure the SDK include directories are listed first (Tools menu, Options, ...). You also probably need to define the WINVER variable in stdafx.h to be 0x500 or greater.

Software Zen: delete this;

old fashioned memory access in a visual C++ console application?

codedancer27-Feb-03 8:58

codedancer

27-Feb-03 8:58

I was wondering if one can still use direct video memory access in text mode to write characters to certain screen (screen now-a-days would just be a console window) positions.
In visual C++ 6, is there anything special you have to do to be able to use address 0xB8000000 in this way? I was thinking that the address should still be used for the console windows to maintain backwards compatibility with the old DOS applications, but maybe the console windows used by win32 console applications are quite different from the command line windows?

Thanks

Re: old fashioned memory access in a visual C++ console application?

Erik Juhl27-Feb-03 9:22

Erik Juhl

27-Feb-03 9:22

The console windows are different in that they get the protection of the HAL, so direct video memory access is forbiden. Otherwise, you could access any hardware directly just by running through a console window and that would be a serious breach.

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