C / C++ / MFC

toxcct7-Aug-08 21:13

7-Aug-08 21:13

you're not supposed to include stdafx.h conditionnally...
this header which you'll find in any MFC program must be included before any other includes in every compilation unit.

I believe you'll have to disable precompiled headers to have a better try, but even that, I'm not sure it will work.

why are you trying to do that ?

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Chesnokov Yuriy7-Aug-08 22:22

Chesnokov Yuriy

7-Aug-08 22:22

I want the cpp file to be VS independent. There are no stdafx.h in Builder C++, and the rest. Only in VS. So you need to either use stdafx.h in every cpp or not to use it

chesnokov

toxcct7-Aug-08 22:27

7-Aug-08 22:27

actually, stdafx.h is not mandatory if your application is not linked to MFC.

also, as I already stated, try to disable Precompiled Header.

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Chesnokov Yuriy7-Aug-08 22:29

Chesnokov Yuriy

7-Aug-08 22:29

it is linked to MFC, the GUI, but the pure C++ lib is not, so you have to put to OS independent lib cpps that stdafx.h

chesnokov

toxcct7-Aug-08 22:32

7-Aug-08 22:32

then, why don't you just gneerate your lib in a non MFC linked DLL ?

that way, your GUI (which is using MFC) will still use stdafx.h like it was, and in your lib sources, you can remove every reference to that file...

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Mark Salsbery8-Aug-08 8:55

Mark Salsbery

8-Aug-08 8:55

Actually, stdafx.h is not required anywhere, even in MFC apps.

The only required header files are the ones your code may need
to compile.

You are free to use or not use pre-compiled headers, and you can
name the associated pre-compiled header file anything you want to.

As mentioned, you need to turn off the use of precompiled headers
or you can change the name in the settings or the name of the file.

stdafx.h has been the default precompiled header file for so long
that many think it's required Smile | :)

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

DWORD PTR [modified]

vikramlinux7-Aug-08 19:52

vikramlinux

7-Aug-08 19:52

HI all,
I have assembly generated code of an simple program

C++ code:

int main(int argc, char* argv[])
{
	int i =10;
	int j =20;
	int k = i+j;

	return 0;
}

some assembly code generated of out it is:

PUBLIC	_main
;	COMDAT _main
_TEXT	SEGMENT
_i$ = -4
_j$ = -8
_k$ = -12
_main	PROC NEAR					; COMDAT

; 8    : {

	push	ebp
	mov	ebp, esp
	sub	esp, 76					; 0000004cH
	push	ebx
	push	esi
	push	edi
	lea	edi, DWORD PTR [ebp-76]
	mov	ecx, 19					; 00000013H
	mov	eax, -858993460				; ccccccccH
	rep stosd

; 9    : 	int i =10;

	mov	DWORD PTR _i$[ebp], 10			; 0000000aH

; 10   : 	int j =20;

	mov	DWORD PTR _j$[ebp], 20			; 00000014H

; 11   : 	int k = i+j;

	mov	eax, DWORD PTR _i$[ebp]
	add	eax, DWORD PTR _j$[ebp]
	mov	DWORD PTR _k$[ebp], eax

; 12   : 
; 13   : 	return 0;

	xor	eax, eax

; 14   : }

My question is:
What is DWORD PTR syntax is
in following line

lea	edi, DWORD PTR [ebp-76]

modified on Friday, August 8, 2008 5:46 AM

SandipG 7-Aug-08 19:56

7-Aug-08 19:56

Does this link[^]
Help??

Regards,
Sandip.

Re: Off Topic

toxcct7-Aug-08 21:11

7-Aug-08 21:11

Vikrams,

you've been asking here for long now.

when will you format your questions and make use of the <pre></pre> tags correctly ?

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Re: Off Topic

vikramlinux7-Aug-08 22:34

vikramlinux

7-Aug-08 22:34

Thanks for the guideline.

Re: Off Topic [modified]

toxcct7-Aug-08 22:36

7-Aug-08 22:36

dude, didn't I mention the <pre></pre> tags, and not the <code></code> one ?

BTW, thanks for the effort, but please edit once again...

thanks. it looks better now...

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modified on Friday, August 8, 2008 5:54 AM

Mark Salsbery8-Aug-08 9:00

Mark Salsbery

8-Aug-08 9:00

There are different machine code instructions for accessing memory
depending on what size the data pointed to is. DWORD means a double-word
(4 bytes), and a DWORD PTR indicates a pointer to a double word.

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Dan9-Aug-08 21:31

Dan

9-Aug-08 21:31

DWOD defines the bit size of the memory being used, PTR is a modifier indicating that we are pointing to a memory location.
The following are defined in x86

BYTE - 8 bits
WORD - 16 bits
DWORD - 32 bits ( double word )
QWORD - 64 bits ( quadruple word )
DQWORD - 128 bits ( double quadruple word )

SetWindosLong and CallWindowProc

vikramlinux10-Aug-08 18:51

vikramlinux

10-Aug-08 18:51

Thank a lot all, for your valuable postings.

Reese Wang7-Aug-08 19:51

Reese Wang

7-Aug-08 19:51

//m_wb is WebBorswer AxtiveX
oldproc=(WNDPROC)GetWindowLong(m_wb.m_hWnd,GWL_WNDPROC);
SetWindowLong(m_wb.m_hWnd,GWL_WNDPROC,(LONG)MyProc);
m_wb.Navigate("http://bbs.carsc2c.com",NULL,NULL,NULL,NULL);

LRESULT CALLBACK MyProc(HWND hWnd,UINT uMsg,WPARAM wParam,LPARAM lParam)
{
if(uMsg==WM_RBUTTONDOWN)
return 0;
return CallWindowProc(oldproc,hWnd,uMsg,wParam,lParam);
}

I dont speak eng,Sorry,

No Write!

Re: SetWindosLong and CallWindowProc

Hamid_RT7-Aug-08 23:19

Hamid_RT

7-Aug-08 23:19

Well I can see a code of you but whats problem? can you more explain,please?

Logical Drive

Davitor7-Aug-08 19:21

7-Aug-08 19:21

Hi

I have spend 2hr. for serach the USB information artical.But i got only one artical which is showing only USB Device name.Artical is [code]http://www.codeproject.com/KB/system/HwDetect.aspx[^][/code]

But i need more information about USB like how may file is there and it's name also.Can any help me..Becouse i havn't found any artical from net.Plz help me

SandipG 7-Aug-08 20:11

7-Aug-08 20:11

If you already know the drive you can just access it as normal drive and search files using
1. FindFirstFile/FindNextFile
2. CFileFind
Can you explain more??

Regards,
Sandip.

Davitor7-Aug-08 20:20

7-Aug-08 20:20

Thx's

may i know which type of explain you want to know from me..

SandipG 7-Aug-08 20:23

7-Aug-08 20:23

Davitor wrote:
may i know which type of explain you want to know from me..
But i need more information about USB like how may file is there and it's name also.
Quote Selected Text

You want to find how many files and names of those files rite and what all information have to gathered so far??

Regards,
Sandip.

Davitor7-Aug-08 20:49

7-Aug-08 20:49

ok i want find all file which is present in USB and file type may be any type of extension.Right now i haven't got any more information just i read some artical.If you have some good artical then plz help me.

SandipG 7-Aug-08 21:00

7-Aug-08 21:00

Davitor wrote:
ok i want find all file which is present in USB and file type may be any type of extension.

I assume you have read the article for which you have provided the link. Once you get the Drive for that USB it can be accessed as any other normal drive / folder.

To Get the file information read replies to following post.

Loop through directory[^]

Davitor7-Aug-08 21:09

7-Aug-08 21:09

yes you are right but i am stuck on geting drive name of USB.Plz plz help me to geting drive name of usb..

SandipG 7-Aug-08 21:27