warning C4273 - inconsistent dll linkage. dllexport assumed. - C / C++ / MFC Discussion Boards

Re: Form like MS Office assistance in vc++

Anthony_Yio9-Oct-03 2:37

Anthony_Yio

9-Oct-03 2:37

http://www.codeproject.com/miscctrl/csplashscreenex.asp?target=splash[^]

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Re: Form like MS Office assistance in vc++

sunju9-Oct-03 18:49

sunju

9-Oct-03 18:49

Thanks for helping me

If u donot mind go to the MSWord Help and select office assistant,u will find office assistance image character
appear and then click and u will see form appear on the screen(If do searching). I want like that form and button flushing.

Thanks

how to implement a CDragCheckListBox?

Jefferson Liu9-Oct-03 0:14

Jefferson Liu

9-Oct-03 0:14

there is a CCheckListBox, there is a CDragListBox, but how to use functions
of both classes?
thanks

StretchDIBits fit into paper

vancouver7778-Oct-03 23:51

vancouver777

8-Oct-03 23:51

I would like to make my program to fit into paper
when printing out. I know we should deal with that
with this function but I am not sure about parameter
Does anyone know what to put?

BITMAPINFOHEADER *pBMI = (BITMAPINFOHEADER*)(LPVOID)lock;

int nColors = 0;
if( pBMI->biBitCount <= 8 )
nColors = ( 1<< pBMI->biBitCount );
if( b_PrintFit )
{
::StretchDIBits( pDC->GetSafeHdc( ),
pInfo->m_rectDraw.left,
pInfo->m_rectDraw.top,
pBMI->biWidth,
pBMI->biHeight,
0,
0,
pBMI->biWidth,
pBMI->biHeight,
(LPBYTE)pBMI + (pBMI->biSize + nColors * sizeof(RGBQUAD)),
(BITMAPINFO*)pBMI,
DIB_RGB_COLORS,
SRCCOPY);
Thanks
shin

Re: StretchDIBits fit into paper

Alex Dolpfin9-Oct-03 3:06

Alex Dolpfin

9-Oct-03 3:06

10th parameter of StretchDIBits should be a pointer to a buffer containing RGB data of bitmap you want to print.
For eg.

CBitmap bmp;
bmp.LoadBitmap(IDB_SOMEBITMAP);
BITMAP bm;
bmp.GetBitmap(&bm);
bm.bmBits is the pointer you need.

Other parameters may be right or wrong cause I dont know what they mean in your program.

By the way, for printing a bitmap you should to create a printer DC and to calculate destination rectangle with paper resolution.

For more info see MSDN!

qeustions on scrolling window?

ashxly8-Oct-03 23:46

ashxly

8-Oct-03 23:46

recently, i found there is a useful feature in HyperSnap-DX 5, that is capturing the whole scrolled window content into a big bitmap, and I think it is very interesting and try to impliment it in VC,but i failed.I have tried to use ScrollWindowEx, WM_VSCROLL and others, does anynone has any idea on the problem?

Best regard

Re: qeustions on scrolling window?

ashxly9-Oct-03 2:48

ashxly

9-Oct-03 2:48

any ideas???

Waiting...

warning C4273 - inconsistent dll linkage. dllexport assumed.

YaronNir8-Oct-03 23:39

YaronNir

8-Oct-03 23:39

Hi all,

I've created a MFC extention dll project. in the stdafx.h file i've wrote:

#undef _GUI_LIB_EXPORT_
#ifdef _EXPORT_GUI_LIB_	
   #define _GUI_LIB_EXPORT_ __declspec(dllexport)
#else	
   #define _GUI_LIB_EXPORT_ __declspec(dllimport)
#endif

i have 2 exported classes, 1 is a dialog, the other one is a button:

1) class _GUI_LIB_EXPORT_ CMyDlg : public CDialog
2) class _GUI_LIB_EXPORT_ CMyBtn : public CButton

i use an MFC exe project to test my dll.

in the stdafx.h i also write :

#undef _GUI_LIB_EXPORT_
#ifdef _EXPORT_GUI_LIB_	
   #define _GUI_LIB_EXPORT_ __declspec(dllexport)
#else	
   #define _GUI_LIB_EXPORT_ __declspec(dllimport)
#endif

when i compile the exe project (that uses the exported dialog and button classes), it seams to recognize the dialog exported class (CMyDlg) but for the CMyBtn class i get the warning C4273 - inconsistent dll linkage. dllexport assumed.

can any1 help???

i am desparate here..

thanks in advanced,

Yaron

Ask not what your application can do for you,
Ask what you can do for your application

Still got no answer can any1 help plz??????

YaronNir9-Oct-03 2:59

YaronNir

9-Oct-03 2:59

Re: warning C4273 - inconsistent dll linkage. dllexport assumed.

Anthony_Yio9-Oct-03 3:09

Anthony_Yio

9-Oct-03 3:09

warning C4273 - inconsistent dll linkage. dllexport assumed.

Isn't the class to be dllexport is what is you want? So, it is correct then. Unless you are importing functions from DLLs.

Why use the macro? Just put in like this

class __declspec(dllexport) CMyDlg : public CDialog<br />
{<br />
...

why making yourself confuse?

hope this helps

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Re: warning C4273 - inconsistent dll linkage. dllexport assumed.

YaronNir9-Oct-03 4:27

YaronNir

9-Oct-03 4:27

Thanks man!

That did the trick........

Ask not what your application can do for you,
Ask what you can do for your application

Re: warning C4273 - inconsistent dll linkage. dllexport assumed.

Anthony_Yio9-Oct-03 16:43

Anthony_Yio

9-Oct-03 16:43

glad it helps. Smile | :)

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Re: warning C4273 - inconsistent dll linkage. dllexport assumed.

Abebe9-Oct-03 4:10

Abebe

9-Oct-03 4:10

remove the stuff you wrote in the stdafx.h. In your dll project place "_EXPORT_GUI_LIB_" in the preprocessor definitions (project settings). This way the classes will be exported when you have defined "_EXPORT_GUI_LIB_" and imported if not defined (as in your client project). Hope this explains it a bit.

Er zit een korstje op mijn aars.

MFC ActiveX application crash with no call stack

tidhar8-Oct-03 23:11

tidhar

8-Oct-03 23:11

Hi,

I have an MFC ActiveX application and on a certain scenario (timing dependent I think) it crashes
with either an "Access Violation" or "Invalid Instruction", and the call stack simply shows:
"GUI! _except_list". I don't get any source file where the crash occured, just some disassembly which doesn't look like valid code (About 100 lines of the same code line in assembly - mov
dword... repreated 100 times or more).

I used BoundsChecker with maxium error checking, but it didn't catch anything.

Any ideas how to catch this?

Thanks.

Re: MFC ActiveX application crash with no call stack

Anthony_Yio9-Oct-03 2:59

Anthony_Yio

9-Oct-03 2:59

Check your *.pdb files. This is where your debugger gets the symbols.(source codes) when debugging.

Hope this helps

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Re: MFC ActiveX application crash with no call stack

tidhar9-Oct-03 3:29

tidhar

9-Oct-03 3:29

Hi,

I found the "except_list" string in my PDB, but it doesn't really tell me anything.

Here's a part of the PDB with the except_list in it.
Every line has an address on the left side, but I didn't add those here.

AfxGetApp@@YGPAVCWinApp@@XZ \q??_7CGUIDlg@@6B@* _numega_finalcheck_Y_110455" 8a??0CStatic@@QAE@XZ* ü]??0CDialog@@QAE@IPAVCWnd@@@Z" g___CxxFrameHandler
__except_list g__EH_prolog& Ô?OnCancel@CGUIDlg@@EAEXXZ" W?OnOK@CGUIDlg@@EAEXXZ" ¾\??3CObject@@SGXPAX@Z" Y??1CGUIDlg@@UAE@XZ2 `#?ReleaseInstance@GUI_MsgMngr@@SAXXZF ‰49?UnregisterMsg@GUI_MsgMngr@@QAEXW4MsgID@@W4ObjectID@@HH@Z2 "#?GetInstance@GUI_MsgMngr@@SAPAV1@XZ" 0__imp__DeleteObject@4>

What can I do with this info?

Thanks.

Re: MFC ActiveX application crash with no call stack

Anthony_Yio9-Oct-03 16:52

Anthony_Yio

9-Oct-03 16:52

You need to have your *.pdb files to be with your *.ocx.
And one more point in case you have forgotten. You need to have your project build in debug mode.

hope this helps

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Re: MFC ActiveX application crash with no call stack

tidhar9-Oct-03 21:32

tidhar

9-Oct-03 21:32

I think I misunderstood your first post. I thought you meant I need to open my PDB file to check it's contents. I guess you meant to make sure I even have a PDB file.
I do have PDB files for each project, and everything is compiled in debug. On "normal" crashes I do get a normal call stack and can debug normally. On this specific crash the only thing in the stack is: "GUI! __except_list" with no source code.
This only happens on my computer. The same version runs fine on other computers in the company, so it's either something specific which is problematic in my computer, or a specific timing sequence that only happens on my computer and causes it to crash.

Thanks anyways.

Windows Service and MFC

Braulio Dez8-Oct-03 23:10

Braulio Dez

8-Oct-03 23:10

Hi,

Some years ago I had to develop an Windows Service, and it didn't used MFC... now I wonder... it's possible to include MFC on a Windows service ?, How can I do that ?

Thanks in advance, Greetings
Braulio

Re: Windows Service and MFC

Anand Paranjpe9-Oct-03 1:08

Anand Paranjpe

9-Oct-03 1:08

Hi,
Create NT Service using ATL COM appwizard.
In StdAfx.h file, include <afx.h> as shown below

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000
#include <afx.h>
//#define STRICT
#ifndef _WIN32_WINNT
#define _WIN32_WINNT 0x0400
#endif

Now u can use MFC in Service Big Grin | :-D

.

Cheers,
Anand

The chosen One Smile | :)

Re: Windows Service and MFC

Atif Mushtaq10-Oct-03 0:23

Atif Mushtaq

10-Oct-03 0:23

There is an easy way aswell , User CreateService API , it's takes an Excutable Name and register that as a service .
Atif

How to invoke IE in VC6.0 console application?

George28-Oct-03 23:00

George2

8-Oct-03 23:00

Hello, everyone!

I want to write a console application using VC++ 6.0 to invoke IE to load a html file which

resides on the same path of my application.

My trouble is, I do not know how to locate the executable file of IE, I want to write a

machine independent application and it is impossible to hard code the path of IE in my

program. Maybe I should read from registry or environment variable?

Who can help? Can you give me a sample?

Thanks in advance,
Geo

Re: How to invoke IE in VC6.0 console application?

Mike Dimmick9-Oct-03 0:29

Mike Dimmick

9-Oct-03 0:29

CreateProcess will look up the path to the executable, although this isn't that advisable (because an attacker could substitute a different IEXPLORE.EXE earlier in the path).

You might be better off using ShellExecuteEx directly on your HTML file, which will load the program registered to open HTML files.

Re: How to invoke IE in VC6.0 console application?

George29-Oct-03 0:37

George2

9-Oct-03 0:37

Thanks, Mike buddy!

I have make a reference of MSDN of ShellExecuteEx. I have never used this function before, and I find the SHELLEXECUTEINFO Structure is too complicated. So, can you tell me how to fill the value of each fields of this structure in my simple example? Smile | :)

regards,
Geo

Re: How to invoke IE in VC6.0 console application?

Mike Dimmick9-Oct-03 1:02

Mike Dimmick

9-Oct-03 1:02

I'd suggest something like:

SHELLEXECUTEINFO sei = { 0 };
sei.cbSize = sizeof( sei );
<font color="green">// Add the SEE_MASK_NOCLOSEPROCESS flag
// if you want to wait until the browser is closed</font>
sei.fMask = SEE_MASK_FLAG_NO_UI | SEE_MASK_FLAG_DDEWAIT;
sei.lpVerb = _T( "open" ); <font color="green">// Could leave NULL</font>
sei.lpFile = _T( "myfile.htm" );
sei.nShow = SW_SHOWNORMAL;

I've used the SEE_MASK_FLAG_NO_UI flag to prevent any message boxes coming up if there's an error. I've also added SEE_MASK_FLAG_DDEWAIT to ensure that launching the file using DDE works - Internet Explorer uses DDE to reuse an existing window if the user has IE configured that way.

You could leave the lpVerb variable set to NULL in order to use the user's default verb (the one in bold when right-clicking an HTML file) but the user could potentially have set this to do something different, rather than Open.

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.