Using Filtering Functions in Win32 App - C / C++ / MFC Discussion Boards

Re: Create Bitmap from mousemovement in picturebox MFC

Alain Rist12-Dec-10 10:00

Alain Rist

12-Dec-10 10:00

josipahutar wrote:
so give me advice, how to can create and save the mousemovent into bitmap???

See the Scribble MFC sample[^].
cheers,
AR

When the wise (person) points at the moon the fool looks at the finger (Chinese proverb)

Re: Create Bitmap from mousemovement in picturebox MFC

josipahutar13-Dec-10 7:21

josipahutar

13-Dec-10 7:21

thx your reply sir..
i dont understand because i newbie in MFC.. Confused | :confused:

so can u give me a example about my problem...

Regard's
Johannes

Re: Create Bitmap from mousemovement in picturebox MFC

David Crow13-Dec-10 8:01

David Crow

13-Dec-10 8:01

josipahutar wrote:
so can u give me a example about my problem...

This MFC tutorial gives a little bit of everything, even for newbies.

"One man's wage rise is another man's price increase." - Harold Wilson

"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

"Man who follows car will be exhausted." - Confucius

Re: Create Bitmap from mousemovement in picturebox MFC

Alain Rist13-Dec-10 9:20

Alain Rist

13-Dec-10 9:20

Hi,
The example is the CScribbleView class code for:

virtual void OnDraw(CDC* pDC);  // overridden to draw this view

afx_msg void OnLButtonDown(UINT nFlags, CPoint point);
afx_msg void OnLButtonUp(UINT nFlags, CPoint point);
afx_msg void OnMouseMove(UINT nFlags, CPoint point);

.

If you cannot study this code and understand how it is an answer to your question think of another kind of working area Wink | ;)

cheers,
AR

When the wise (person) points at the moon the fool looks at the finger (Chinese proverb)

[Solved] Speech sample not running.... [modified]

AmbiguousName12-Dec-10 8:01

AmbiguousName

12-Dec-10 8:01

hello guys... i got this small speech api sample and tried to compile but got this error.

error C2440: 'static_cast' : cannot convert from 'void (__thiscall CSpeechDlg::* )(void)' to 'LRESULT (__thiscall CWnd::* )(WPARAM,LPARAM)'

This is where it takes me when hiting on the error.

ON_MESSAGE(WM_RECOEVENT,OnRecoEvent)

This is the function signature of OnRecoEvent

void CSpeechDlg::OnRecoEvent()

And this is what WM_RECOEVENT is..

#define WM_RECOEVENT    WM_USER+5      // Window message used for recognition events

what should I do? thnx

modified on Monday, December 13, 2010 3:44 AM

Re: Speech sample not running....

Richard MacCutchan12-Dec-10 9:37

Richard MacCutchan

12-Dec-10 9:37

Your OnRecoEvent() function is called in response to a Windows message so it must follow the rules as explained in the error message. That is to say, it takes a WPARAM and an LPARAM as input parameters and returns an LRESULT.

Just say 'NO' to evaluated arguments for diadic functions! Ash

Re: Speech sample not running....

Emilio Garavaglia12-Dec-10 9:42

Emilio Garavaglia

12-Dec-10 9:42

The prototype for an ON_MESSAGE invoked member-function should be

LRESULT(::*)(WPARAM, LPARAM)

and not

void(::*)()

as you did.

2 bugs found.
> recompile ...
65534 bugs found.
D'Oh! | :doh:

Using Filtering Functions in Win32 App

Coder-12345612-Dec-10 3:14

Coder-123456

12-Dec-10 3:14

Hi every one,

Have you ever saw minifilter driver source code in WinDDK examples?
I want to write a program like the user app that connects to driver but I want to make Win32 App with dialogs, ...
When I compile it, Free Build Environment reports errors.
for example this is a part of my code:

int WINAPI
WinMain (
    __in HINSTANCE hInstance,
    __in_opt HINSTANCE hPrevInstance,
    __in LPSTR lpCmdLine,
    __in int nCmdShow
)
{
    DWORD requestCount = SCANNER_DEFAULT_REQUEST_COUNT;
    DWORD threadCount = SCANNER_DEFAULT_THREAD_COUNT;
    SCANNER_THREAD_CONTEXT context;
    HANDLE port, completion;
    PSCANNER_MESSAGE msg;
    DWORD threadId;
    HRESULT hr;
    DWORD i, j;
/*Line 277*/HWND h;


    hr = FilterConnectCommunicationPort( ScannerPortName,
                                         0,
                                         NULL,
                                         0,
                                         NULL,
                                         port );

------------------------------------------------------------------------

And Free Build Environment reports: Confused | :confused:

BUILD: Compile and Link for x86
BUILD: Start time: Sun Dec 12 12:27:56 2010
BUILD: Examining d:\av-fsd2\test directory for files to compile.
    d:\av-fsd2\test Invalidating OACR warning log for 'root:x86fre'
BUILD: Compiling and Linking d:\av-fsd2\test directory
Configuring OACR for 'root:x86fre' - &lt;OACR on&gt;
Compiling resources - resource.rc
Compiling - test.c
1>errors in directory d:\av-fsd2\test
1>d:\av-fsd2\test\test.c(277) : error C2220: warning treated as error - no 'obje
ct' file generated
Linking Executable - objfre_win7_x86\i386\test.exe
1>link : error LNK1181: cannot open input file 'd:\av-fsd2\test\objfre_win7_x86\
i386\test.obj'
BUILD: Finish time: Sun Dec 12 12:27:57 2010
BUILD: Done
    4 files compiled - 5 Warnings - 1 Error
    1 executable built - 1 Error

------------------------------------------------------------------------

And this is the content of sources file:

TARGETNAME=test
TARGETTYPE=PROGRAM
TARGET_DESTINATION=dbg\layout
USE_MSVCRT=1
MSC_WARNING_LEVEL=/W4 /WX
MUI=0
MUI_COMMENT=TO_COMMENT, old disabled, owners need to contact MUICore to get new comment and comment code
UMTYPE=windows
UMENTRY=winmain
UMBASE=0x1000000
!if $(_NT_TARGET_VERSION) != $(_NT_TARGET_VERSION_WS03)  
# Use current headers (don't set _NT_TARGET_VERSION)
# Run downlevel to XP
SUBSYSTEM_VERSION=$(SUBSYSTEM_501)
!endif
C_DEFINES = $(C_DEFINES) -DUNICODE -D_UNICODE
INCLUDES=$(INCLUDES);         \
         $(IFSKIT_INC_PATH);  \
         $(DDK_INC_PATH);     \
         ..\inc
TARGETLIBS=\
        $(SDK_LIB_PATH)\kernel32.lib    \
        $(SDK_LIB_PATH)\user32.lib      \
        $(SDK_LIB_PATH)\gdi32.lib       \
        $(SDK_LIB_PATH)\comctl32.lib    \
        $(SDK_LIB_PATH)\cfgmgr32.lib    \
        $(SDK_LIB_PATH)\setupapi.lib
TARGETLIBS= $(TARGETLIBS) \
            $(IFSKIT_LIB_PATH)\fltMgr.lib
 
SOURCES=test.c \
        resource.rc

So does any body know how I can use windows user mode filtering functions in Win32 projects? (not in console mode)

Thanks

Re: Using Filtering Functions in Win32 App

Niklas L12-Dec-10 3:23

Niklas L

12-Dec-10 3:23

And what does row 277 in file d:\av-fsd2\test\test.c say? This is where the error occurs according to the output.

home

Re: Using Filtering Functions in Win32 App

Coder-12345612-Dec-10 5:07

Coder-123456

12-Dec-10 5:07

As you can see I said in the code block #1 (/*Line 277*/).
I mean that when I mix user mode filtering functions with Win32 Project it gives errors. for example in the dialog procedure.

Re: Using Filtering Functions in Win32 App

Niklas L12-Dec-10 8:09

Niklas L

12-Dec-10 8:09

Ok, sorry. What does it give without the /WX switch?

home

Re: Using Filtering Functions in Win32 App

Coder-12345612-Dec-10 21:27

Coder-123456

12-Dec-10 21:27

I think the problem does not belong to line 277 (declaration of HWND h) maybe it is due to the next line, means FilterConnectCommunicationPort calling.
I suggest please make a Win32 project and use functions like FilterConnectCommunicationPort or FilterGetMessage or FilterReplyMessage in the e.g. mail dialog procedure and finally compile it with WinDDK and tell me the result.

How can use Socket Connection Timeout?

Le@rner11-Dec-10 1:40

Le@rner

11-Dec-10 1:40

Hi all,

Is it possilbe to set socket connection timeout? For e.g. If I want to connect to some host with socket connection within 5 seconds if I cant connect within 5 seconds,function return from this point without process further operation.

I have checked socket class, apprently I cant find out some way for connection timeout ? Can anybody help me regarding this?

i m using this for socket connection

WSADATA wsaData;
	if (WSAStartup(MAKEWORD(1, 1), &wsaData) != 0)
	{
		int i = WSAGetLastError();
		
	}

	sock = socket(AF_INET,SOCK_STREAM,0);
	if(sock==-1)
	{
		int i = WSAGetLastError();
		
	}

	USES_CONVERSION;
	struct sockaddr_in my_addr;
	memset(&my_addr,0,sizeof(my_addr));

	my_addr.sin_family = AF_INET; // host byte order
	my_addr.sin_port = htons(MYPORT); // short, network byte order
	LPSTR lpszAscii = T2A((LPTSTR)ServerName);
	my_addr.sin_addr.s_addr = inet_addr(lpszAscii);
	if (my_addr.sin_addr.s_addr == INADDR_NONE)
	{
		LPHOSTENT lphost;
		lphost = gethostbyname(lpszAscii);
		if (lphost != NULL)
		{
			my_addr.sin_addr.s_addr = ((LPIN_ADDR)lphost->h_addr)->s_addr;
		}
		else
		{
			WSASetLastError(WSAEINVAL);
			return WSAEINVAL;
		}
	}
	if(connect(sock,(struct sockaddr *)&my_addr,sizeof(struct sockaddr))==-1)
	{
		return FALSE;
	}

please help me for this.

thanks in advance.

Re: How can use Socket Connection Timeout?

yu-jian15-Dec-10 3:13

yu-jian

15-Dec-10 3:13

I use the fcntl(sock, F_SETFD, O_NONBLOCK);
to set the socket non-block after the socket has beed created.

you can get the system timer before create socket connection, then check if timeout when read once buffer.
If timeout return or throw TimneoutException.

Re: How can use Socket Connection Timeout?

Le@rner15-Dec-10 17:19

Le@rner

15-Dec-10 17:19

yu-jian wrote:
fcntl(sock, F_SETFD, O_NONBLOCK);

how can u use this.
this is not available in mfc vc++.

User defined message , exeption at the handler return [modified]

timbk10-Dec-10 3:05

timbk

10-Dec-10 3:05

Hello, Im using a dialog based app (VC++ 6), with a main dialog and his child dialog (modals dialogs).
And i have to use a user defined message to send a message to the parent dialog. When i'm debugging, in the handler of this message (in the parent dialog) i get this exception in the return sentence "Unhandled exception in Myapp.exe (MFC42D.DLL):0xc0000005: Acces Violation

Parent dialog header, declaration of Handler:

       .
       .
afx_msg LRESULT OnMsjGuardarConfig(WPARAM wParam, LPARAM lParam);
       .
       .

Parent dialog header, Declared Mesagge map:

       .
       .
afx_msg void OnMsjGuardarConfig();
       .
       .

Parent dialog source, file Message map:

       .
       .
ON_MESSAGE(WM_MsjGuardarConfig, OnMsjGuardarConfig)
       .
       .

Parent dialog source, file definition of the handler:

LRESULT CCalibracionDlg::OnMsjGuardarConfig(WPARAM wParam, LPARAM lParam)
{
  //i do some stuffs 
return 0; // ==> here is exception !!!!
}

Defining the user defined message in StdAfx.h:

           .
           .
#define WM_MsjGuardarConfig WM_USER+1 // 
           .
           .

Posting the message in the child dialog:

void CConfiguracionDlg::OnBUTTONGuadar() 
{
	GetParent()->;PostMessage(WM_MsjGuardarConfig,NULL,NULL); //
}

Probably is some newbie problem , but i can't fix it until now. Frown | :(

Thanks in advance!!

modified on Friday, December 10, 2010 10:25 AM

Re: User defined message , exeption at the hander return

Cool_Dev10-Dec-10 3:25

Cool_Dev

10-Dec-10 3:25

timbk wrote:
//i do some stuffs

what are the stuffs you do there?

timbk wrote:
afx_msg void OnMsjGuardarConfig();

what is this meant for, though it may not be the reason for your problem.?

Re: User defined message , exeption at the hander return

timbk10-Dec-10 4:09

timbk

10-Dec-10 4:09

Cool_Dev wrote:
timbk wrote:
//i do some stuffs

what are the stuffs you do there?

At the moment nothing , all code inside es comented, so this is how it looks now:

LRESULT CCalibracionDlg::OnMsjGuardarConfig(WPARAM wParam, LPARAM lParam)
{
return 0; // ==> here is the exception !!
}

Cool_Dev wrote:

timbk wrote:
afx_msg void OnMsjGuardarConfig();

what is this meant for, though it may not be the reason for your problem.?

I'm not sure to understand very weel this question, but anyway , this piece of code that you quote is in the header file of parent dialog let say's MydialogDlg.h :

            .
            .
protected:
	HICON m_hIcon;

	// Generated message map functions
	//{{AFX_MSG(CCalibracionDlg)
            .
            .           
 	afx_msg void OnSetfocusEditSens7();
	afx_msg void OnSetfocusEditSens8();
	afx_msg void OnConfiguracion();
	afx_msg void OnMsjGuardarConfig();
            .
            .
        //}}AFX_MSG
	DECLARE_MESSAGE_MAP()

Re: User defined message , exeption at the hander return

Maximilien10-Dec-10 3:48

Maximilien

10-Dec-10 3:48

timbk wrote:
afx_msg void OnMsjGuardarConfig();

shouldn't that be :

LRESULT OnMsjGuardarConfig(WPARAM wParam, LPARAM lParam);

Watched code never compiles.

Re: User defined message , exeption at the hander return

timbk10-Dec-10 4:24

timbk

10-Dec-10 4:24

Maximilien wrote:
timbk wrote:
afx_msg void OnMsjGuardarConfig();

shouldn't that be :

LRESULT OnMsjGuardarConfig(WPARAM wParam, LPARAM lParam);

Ok , I tried with this:

LRESULT OnMsjGuardarConfig(WPARAM wParam, LPARAM lParam);

instead of

afx_msg LRESULT OnMsjGuardarConfig(WPARAM wParam, LPARAM lParam);

and besides :

afx_msg void OnMsjGuardarConfig();

instead of

afx_msg void OnMsjGuardarConfig();

Is this what you meant?
No erros compiling, but I get the same exception.

Re: User defined message , exeption at the handler return

«_Superman_»10-Dec-10 7:50

«_Superman_»

10-Dec-10 7:50

Use WM_APP + 1 instead of WM_USER + 1.

«_Superman_»
I love work. It gives me something to do between weekends.

Microsoft MVP (Visual C++)

Polymorphism in C

Re: User defined message , exeption at the handler return

timbk10-Dec-10 7:56

timbk

10-Dec-10 7:56

«_Superman_» wrote:
Use WM_APP + 1 instead of WM_USER + 1.

Thanks for your answer, I did what you said, but i get the same exception.

Added information

timbk10-Dec-10 8:09

timbk

10-Dec-10 8:09

When the exception comes up, i have this debug log:

Loaded 'ntdll.dll', no matching symbolic information found.
Loaded 'C:\WINDOWS\system32\kernel32.dll', no matching symbolic information found.
Loaded 'C:\WINDOWS\system32\inpout32.dll', no matching symbolic information found.
Loaded 'C:\WINDOWS\system32\advapi32.dll', no matching symbolic information found.
Loaded 'C:\WINDOWS\system32\rpcrt4.dll', no matching symbolic information found.
Loaded 'C:\WINDOWS\system32\secur32.dll', no matching symbolic information found.
Loaded 'C:\WINDOWS\system32\MFC42D.DLL', no matching symbolic information found.
Loaded 'C:\WINDOWS\system32\MSVCRTD.DLL', no matching symbolic information found.
Loaded 'C:\WINDOWS\system32\gdi32.dll', no matching symbolic information found.
Loaded 'C:\WINDOWS\system32\user32.dll', no matching symbolic information found.
Loaded symbols for 'C:\WINDOWS\system32\MFCO42D.DLL'
Loaded 'C:\WINDOWS\system32\imm32.dll', no matching symbolic information found.
Loaded 'C:\WINDOWS\system32\mfc42loc.dll', no matching symbolic information found.
Loaded 'C:\WINDOWS\system32\comctl32.dll', no matching symbolic information found.
Loaded 'C:\WINDOWS\system32\msvcrt.dll', no matching symbolic information found.
Loaded 'C:\WINDOWS\system32\shlwapi.dll', no matching symbolic information found.
Loaded 'C:\WINDOWS\system32\uxtheme.dll', no matching symbolic information found.
Loaded 'C:\WINDOWS\system32\MSCTF.dll', no matching symbolic information found.
Loaded 'C:\WINDOWS\system32\version.dll', no matching symbolic information found.
Loaded 'C:\WINDOWS\system32\MSCTFIME.IME', no matching symbolic information found.
Loaded 'C:\WINDOWS\system32\ole32.dll', no matching symbolic information found.
Loaded 'C:\Archivos de programa\Internet Download Manager\idmmkb.dll', no matching symbolic information found.
Warning: dialog data checkbox value (2117840950) out of range. //I can't find why , all checkboxes  seems ok. 
Warning: dialog data checkbox value (1598735280) out of range. //I can't find why , all checkboxes  seems ok
First-chance exception in Calibracion.exe (MFC42D.DLL): 0xC0000005: Access Violation.

Look at the warnings about checkboxes , there were a lot more , but once i saved the file generated by Myapp, all these checkboxes warnings desappeared , but these two not, i can't find them.

Another thing , when the exception comes up the debugger jumps to a asembler code :

5F430BE2   call        dword ptr [eax+98h] // jump to this line.
5F430BE8   test        eax,eax
5F430BEA   je          5F430BF3
5F430BEC   mov         eax,1
5F430BF1   jmp         5F430C01
5F430BF3   mov         ecx,dword ptr [ebp-4]
5F430BF6   cmp         ecx,dword ptr [ebp+8]
5F430BF9   jne         5F430BFD
5F430BFB   jmp         5F430BFF
5F430BFD   jmp         5F430BB1
5F430BFF   xor         eax,eax
.
.

More Added Info

timbk10-Dec-10 9:30

timbk

10-Dec-10 9:30

The ecxeption is a first chance exception :First-chance exception in MyApp.exe (MFC42D.DLL): 0xC0000005: Access Violation.

The app runs without any exception, but after the PostMessage is sent to the parent dialog , the child dialog do some things wrong , dones't work fine, but there isn't any errors messages.

Re: More Added Info

Richard MacCutchan10-Dec-10 23:01

Richard MacCutchan

10-Dec-10 23:01

You have some conflicting statements here, you cannot say the app works without exception when an exception has occurred.

You also say "the child dialog do some things wrong". So, find out why it is doing those things and fix the program. You need to spend time with your debugger finding out why the exception occurs, and why the other errors happen. From the information you have provided it is impossible to guess what your code is doing.

Just say 'NO' to evaluated arguments for diadic functions! Ash

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