C / C++ / MFC Discussion Boards

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Re: Linux operation system !

Stephen Caldwell3-Nov-01 16:45

Stephen Caldwell

3-Nov-01 16:45

No, I'm pretty sure that you can't use MFC with linux. You can however program using the win32 api on linux using Wine. Wine is an implementation of the win32 api for unix systems. You can read more about it at Wine Developement HQ.

Stephen Caldwell
Blackfission, CEO
http://bf.steffc.yi.org:81

Re: Linux operation system !

Nish Nishant3-Nov-01 17:58

Nish Nishant

3-Nov-01 17:58

MFC programs will work on Wine too. As long as the required MFC DLLs are there

Nish

Re: Linux operation system !

Stephen Caldwell3-Nov-01 18:24

Stephen Caldwell

3-Nov-01 18:24

Oh okay, cool. I have been enlightened.

Stephen Caldwell
Blackfission, CEO
http://bf.steffc.yi.org:81

Re: Linux operation system !

Hadi Rezaee4-Nov-01 4:49

Hadi Rezaee

4-Nov-01 4:49

Thanks for your help !

My month article: Game programming by DirectX by Lan Mader.
Please visit in: www.geocities.com/hadi_rezaie/index.html

Hadi Rezaie

Re: Linux operation system !

Hadi Rezaee4-Nov-01 4:50

Hadi Rezaee

4-Nov-01 4:50

Thanks for your help !

My month article: Game programming by DirectX by Lan Mader.
Please visit in: www.geocities.com/hadi_rezaie/index.html

Hadi Rezaie

Re: Linux operation system !

James R. Twine3-Nov-01 18:10

James R. Twine

3-Nov-01 18:10

Wind/U might be a solution for you: http://www.bristol.com/windu/.

Peace!

-=- James.

Re: Linux operation system !

Hadi Rezaee4-Nov-01 4:51

Hadi Rezaee

4-Nov-01 4:51

Thanks for your help !

My month article: Game programming by DirectX by Lan Mader.
Please visit in: www.geocities.com/hadi_rezaie/index.html

Hadi Rezaie

Re: Linux operation system !

Mike Nordell7-Nov-01 1:25

Mike Nordell

7-Nov-01 1:25

Most probably: Yes.
Have a look at WINE.

Using this, I think you can even recompile MFC to use native "winelib".

/Mike

Changing language in Editbox !

Hadi Rezaee3-Nov-01 16:18

Hadi Rezaee

3-Nov-01 16:18

Hi all,
I'm using Win98 SE ...
I have multi language in my operation system, English and Arabic ...
I'm writing Dialog-based program with MFC ...
How can i change language from Arabic to English ?
Please write source code .

My month article: Game programming by DirectX by Lan Mader.
Please visit in: www.geocities.com/hadi_rezaie/index.html

Hadi Rezaie

Menu with a BMP as background

MaTrIX2k23-Nov-01 15:32

MaTrIX2k2

3-Nov-01 15:32

I've seen that some app's use a BMP as menus background, how can i do this? Confused | :confused:

Re: Menu with a BMP as background

Nish Nishant3-Nov-01 18:00

Nish Nishant

3-Nov-01 18:00

Owner-draw it.
You might find some samples here in code project

Nish

Retrieving 48x48 icons in XP

Michael Dunn3-Nov-01 15:30

Michael Dunn

3-Nov-01 15:30

I'm working on an icon handler which, most of the time, gets a file's normal icon with SHGetFileInfo(). Trouble is, SHGetFileInfo can only get 16x16 and 32x32 icons from the system image list (with SHGFILARGEICON and SHGFI_SMALLICON flags). Is there a way to get the 48x48 icons used in tile view? There's got to be a 48x48 system image list.

--Mike--
http://home.inreach.com/mdunn/
#include "witty_sig.h"
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Toolbar Button Update

Steve L.3-Nov-01 9:01

Steve L.

3-Nov-01 9:01

I have a button on my toolbar. At certimes i call a function which changes the bitmap of that button, however the buttons bitmap does not change unless you hover your mouse over the bitmap or dock or undock the toolbar. What code can i add to make it so the button's bitmap changes when i call the function?

<marquee>Raffi

Re: Toolbar Button Update

Christian Graus3-Nov-01 12:18

Christian Graus

3-Nov-01 12:18

From memory when I did it I called SetToolbarButton ( or whatever ) and it updated, although I may have called Invalidate on the button as well. I have a toolbar class on CP that allows setting of buttons though, check that out if you're stuck.

Christian

After all, there's nothing wrong with an elite as long as I'm allowed to be part of it!! - Mike Burston Oct 23, 2001

Re: Toolbar Button Update

Steve L.3-Nov-01 13:38

Steve L.

3-Nov-01 13:38

Fogot to Invalidate. Thanks alot! Smile | :)

<marquee>Raffi

Function name help

Mike Doner3-Nov-01 7:25

Mike Doner

3-Nov-01 7:25

Folks,

I KNOW there is a function I can use to ensure that a directory path exists. Basically, it will enumerate through all the folders in your path, an if it doesn't exist it will create it

UNKNOWNFUNCTIONAME ("C:\Name\Address\PhoneNumber");

If only C:\Name exists, it creates Address and Phone Number.

I'm working in VC6.0.... heelp..

Thx.
doner@obtain.com

Re: Function name help

Rainer Mangold3-Nov-01 8:13

Rainer Mangold

3-Nov-01 8:13

There is a function

MakeSureDirectoryPathExists(PCSTR Pathname)

This function however is located in dbghelp.dll which you can /nedd to Wink | ;)

distribute with your application. for more information have a look in MSDN Platform SDK

cheers

Rainer

Re: Function name help

#realJSOP4-Nov-01 2:27

#realJSOP

4-Nov-01 2:27

I use this:

#include <io.h>

BOOL FileExists(CString fn)
{
   BOOL exists = FALSE;
   if (!fn.IsEmpty())) 
   {
      int status = _access((const char*)fn, 0);
      if (status == 0)
      {
         exists = TRUE;
      }
   }
   return exists;
}

"...the staggering layers of obscenity in your statement make it a work of art on so many levels." - Jason Jystad, 10/26/2001

CInternetSession difficulty

Richard Stringer3-Nov-01 7:25

Richard Stringer

3-Nov-01 7:25

Is there any way when using CInternetSession OpenURL to tell if the file requested is not found. I am using the following:

CInternetSession session;
CStdioFile *remote = session.OpenURL(url,1,INTERNET_FLAG_TRANSFER_BINARY|INTERNET_FLAG_RELOAD);

No matter what I send as a url if it is a valid address the remote file is opens with no errors as far as I can tell. Problem is in place of the file I want to download what I am getting is the default page sent by the server when a file cannot be found. Since I am replacing a critical application file this can be big troubles.

Is there a solution or a better way to get files in the background.

Thanks

Richard

If you pick up a starving dog and make him prosperous, he will not bite you. This is the principal difference between a dog and a man.
- Pudd'nhead Wilson's Calendar

abstract class - guru wanted

3-Nov-01 5:49

I have a class with an abstract member function-

virtual void foo( obj& ) = 0;

and I have implemented this in the derived class. However, whenever I try and call a member function (which incidentally is derived from the base class publically also) from within the derived class one, I get an error message that the this argument (which I understand is passed implicitly in any member function call) discards qualifiers. Im not sure what im doing wrong and what these qualifiers are even...

thanks in advance,
Chris M

Re: abstract class - guru wanted

Michael Dunn3-Nov-01 8:24

Michael Dunn

3-Nov-01 8:24

It would help if you post the code and the error message. It's probably talking about "CV-qualifiers" which means "const" and "volatile". If you call a method that specifies a const this pointer, you can't then call another method that doesn't have a const this. For example:

class xyz
{
  int nonconstthis() { return 1; }
  int constthis() const { return nonconstthis(); } // error here
};

--Mike--
http://home.inreach.com/mdunn/
#include "witty_sig.h"
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TransparentBlt/AlphaBlend Error

Chambers3-Nov-01 5:38

Chambers

3-Nov-01 5:38

Hi all, having succesfully created/loaded a 24-bit DIBSection and managed to access "the bits", I now need to display it transparently. The program loads a DIBSection from file (so say a photo), and I want to then draw another 24-bit DIBSection over it. However, using BitBlt it just copies the bitmap over it (obviously since I use the SRCCOPY flag), black background included, and you can`t see the photo anymore. Having looked at Christians article I tried using the following code to incorporate TransparentBlt :

HBITMAP hOldBitmap = (HBITMAP)dcMem.SelectObject(bm);
TransparentBlt(pDC->m_hDC,0,0,bm.bmWidth,bm.bmHeight,dcMem.m_hDC,0,0,bm.bmWidth,bm.bmHeight,0);
dcMem.SelectObject(hOldBitmap);
dcMem.DeleteDC();

However, I get the following error message:

BitmapView.obj : error LNK2001 : unresolved external symbol _imp_TransparentBlt@44
Debug/Dissertation.exe: fatal error LNK1120:1 unresolved externals
Error executing Link.exe
Dissertation.exe - 2 error(s), 0 warning(s)

Also, I have noticed in the MSDN that TransparentBlt should only be used with 4 or 8 bit bitmaps, and have tried using AlphaBlend, which is supposed to be for 32-bit bitmaps, but I get a similar message. Can someone please tell me where me or my computer are going wrong? Much appreciated.

Alan. Confused | :confused:

P.S. Any chance you know how to initialise a 24-bit DIBSection so that its background is white, not black? (Without iterating through "the bits") I`ve asked this question a couple of times, no-one seems to have a clue.

AEGC

Re: TransparentBlt/AlphaBlend Error

Christian Graus3-Nov-01 11:58

Christian Graus

3-Nov-01 11:58

TO make it white just select the DIBSection into a CDC and bltblt onto it using WHITENESS instead of SCRCCOPY.

My code for TransparentBlting is called TransparentBltU, you're trying to use the standard windows function, and for some reason you're finding the header but not the library. I assume you're talking the code from WDJ. Internally that function shows how to generate a mask on the fly.

Christian

After all, there's nothing wrong with an elite as long as I'm allowed to be part of it!! - Mike Burston Oct 23, 2001

Re: TransparentBlt/AlphaBlend Error

Chambers4-Nov-01 2:08

Chambers

4-Nov-01 2:08

How do i get the library? do i have to re-install it? Would you mind if I used an implementation of your code from the WDJ site? (I was talking about that - couldn`t remember site name off top of my head though).

Cheers for the response, again, Christian,
Alan. Big Grin | :-D

AEGC

ADO GLOBAL CONNECTION

3-Nov-01 5:23

HI.
I´m developing a database application using ADO and, although it´s a large program i don´t want to use more than 2 or 3 open connections.
The problem is that i can´t define a global connection pointer, right now, i can only make it work creating a new con in every cpp file.
I´ve tryed defining a global pointer in every way i know but I´m allways getting memory or even weirder errors.
Can anyone help me out?

Pedro Besteiro
LSI systems integration

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