C / C++ / MFC Discussion Boards

RockyJames27-Oct-06 0:36

27-Oct-06 0:36

Hi,
i wrote a MDI application..i have given an extension .sam..i have serialized the data..saved the document on the disk..When i double click on the file..by default..i want it to be opened by my application..how to do it..?

thanks in before

James

Re: File extension

benjymous27-Oct-06 0:54

benjymous

27-Oct-06 0:54

You need to create a file association

Clickety[^]

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Re: File extension

RockyJames27-Oct-06 1:06

RockyJames

27-Oct-06 1:06

please can you be more clear ,i did not understand it..

Re: File extension

toxcct27-Oct-06 2:30

toxcct

27-Oct-06 2:30

click on the link and read the article man ! Sleepy | :zzz:

it seems to be not the 1st time you have problems to follow given links Unsure | :~

You don't know where to start ? ask a good friend

[VisualCalc 3.0][Flags Beginner's Guide]

Re: File extension

David Crow27-Oct-06 4:07

David Crow

27-Oct-06 4:07

RockyJames wrote:
When i double click on the file..by default..i want it to be opened by my application..how to do it..?

If the application was created by AppWizard, this should happen automatically. There should be a .reg file in your project. You should also have calls to EnableShellOpen() and RegisterShellFileTypes() in the app's InitInstance() method.

"Approved Workmen Are Not Ashamed" - 2 Timothy 2:15

"Judge not by the eye but by the heart." - Native American Proverb

Re: File extension

RockyJames27-Oct-06 18:39

RockyJames

27-Oct-06 18:39

thank q..very much

custum toolbar

keyurbhatnagar26-Oct-06 23:54

keyurbhatnagar

26-Oct-06 23:54

I have to create a toolbar with buttons of different size. I was unable to do that so i am using a dialog bar for the purpose, can some help me to create this custom toolbar

Keyur Bhatnagar

How do i activate different child frames?

keyurbhatnagar26-Oct-06 23:52

keyurbhatnagar

26-Oct-06 23:52

I have an application with different child frames having different views, form view, graphview.., 4 such views, i have a dialog bar through which i want to activate these different views. Can some one help?

Keyur Bhatnagar
Software Engineer

Re: How do i activate different child frames?

Mark Salsbery27-Oct-06 6:28

Mark Salsbery

27-Oct-06 6:28

I like to manage windows like this using a list (CPtrList, CTypedPtrList, etc.) so I always
know what windows are in existence. With only 4 views you can just keep 4 pointer variables
for the windows then use SetFocus or whatever to activate the appropriate window through its
pointer. Way easier than enumerating child windows to find the appropriate window to activate.

Mark

Monitoring/manipulating Packet traffic.

Kobi_Z26-Oct-06 23:02

Kobi_Z

26-Oct-06 23:02

Hi,
Im using Borlan c++ builder, and want to know how can i direct all network traffic from/to my computer through a program which will be like a buffer.
I think its kind of a proxy.

i know how to use ClientSocket / ServerSocket but dont know how to force the traffic into going through such proxy , i tried changing default gateway address but it makes trouble.

good day.

Kobi.

Re: Monitoring/manipulating Packet traffic.

dzolee27-Oct-06 1:50

dzolee

27-Oct-06 1:50

Using "raw socket" is the way to see all incoming/outgoing traffic from your application. I'm not sure if you can manipulate the packets this way, but surely you can see every single packet, even non-data transfer stuff (when a connection is established or terminated)

How to create multiple workspaces for a single project?

swati.ghadage26-Oct-06 22:55

swati.ghadage

26-Oct-06 22:55

Hi,
I want to have multple workspaces for a single project? how should that be done? what extra changes are to be made in the project settings ?

Re: How to create multiple workspaces for a single project?

Sceptic Mole26-Oct-06 23:35

Sceptic Mole

26-Oct-06 23:35

swati.ghadage wrote:
I want to have multple workspaces for a single project? how should that be done? what extra changes are to be made in the project settings ?

It's the other way round. You can create multiple projects for a single workspace (at least in VC++ 6.0). Smile | :)

MSVC++ Enterprise version Vs Standard version

koumodaki26-Oct-06 22:52

koumodaki

26-Oct-06 22:52

What are the differences between Microsoft VC++ 6.0 Enterprise version and Standard version

Re: MSVC++ Enterprise version Vs Standard version

David Crow27-Oct-06 4:16

David Crow

27-Oct-06 4:16

See here.

"Approved Workmen Are Not Ashamed" - 2 Timothy 2:15

"Judge not by the eye but by the heart." - Native American Proverb

Problem with CFileDialog (access violation).

kiranin26-Oct-06 22:42

kiranin

26-Oct-06 22:42

I'm having some nasty problems with the MFC class CFileDialog. I'm simply trying to use it to get the name of a selected file and put it in a text edit box. I have done this many times before and have never had this sort of problem. Here is the code that is producing the error:

void CUpload::OnBrowse() 
{
	// TODO: Add your control notification handler code here

	static TCHAR BASED_CODE szFilter[] = "Windows Setup file (*.exe; *.EXE; *.msi ;*.MSI)|*.exe ;*.EXE;*.msi;*.MSI||";	

	CFileDialog oFileDlg(TRUE,"exe","",OFN_FILEMUSTEXIST|OFN_NOCHANGEDIR, szFilter);	
	oFileDlg.m_ofn.lpstrTitle = "Select the Installable Application";			

	
	if(oFileDlg.DoModal() == IDOK)
	{
		m_strloc = oFileDlg.GetPathName();

		GetDlgItem(IDC_FILELOC)->SetWindowText(m_strloc);
	}	
	

		
}

IDC_FILELOC is the id of the editbox and m_strloc is the variable of the edit box.

When I press the 'browse' (which calls void CUpload::OnBrowse() button the CFileDialog is created and DoModal() is called (causing the dialog to appear). It then lets me select a file. If I press 'Open' it returns IDOK and the file name gets put into the text edit box. If I select 'Cancel' IDCANCEL is returned and anything inside the text edit box is cleared (as it should be). The error doesn't occur untill the destructor is called. Which of course happens when the CFileDialog goes out of scope as soon as the function. Everything I have before then works correctly (I used message boxes to stop determine the point just before it crashes). I even commented out everything but the constructor and still got an error when the destructor is called.

The error message it says when the program crashes when I run it through the debugger says, "Unhandled exception in File Splitter.exe (KERNEL32.DLL): 0xC0000005: Access Violation."

KERNEL32! 7c80979d()
CFileDialog::~CFileDialog() + 71 bytes
CUpload::OnBrowse() line 78 + 18 bytes
_AfxDispatchCmdMsg(CCmdTarget * 0x0012f564 {CUpload hWnd=0x00080786}, unsigned int 1004, int 0, void (void)* 0x00401659 CUpload::OnBrowse(void), void * 0x00000000, unsigned int 12, AFX_CMDHANDLERINFO * 0x00000000) line 88
CCmdTarget::OnCmdMsg(unsigned int 1004, int 0, void * 0x00000000, AFX_CMDHANDLERINFO * 0x00000000) line 302 + 39 bytes
CDialog::OnCmdMsg(unsigned int 1004, int 0, void * 0x00000000, AFX_CMDHANDLERINFO * 0x00000000) line 97 + 24 bytes
CWnd::OnCommand(unsigned int 1004, long 133210) line 2088
CWnd::OnWndMsg(unsigned int 273, unsigned int 1004, long 133210, long * 0x0012efe0) line 1597 + 28 bytes
CWnd::WindowProc(unsigned int 273, unsigned int 1004, long 133210) line 1585 + 30 bytes
AfxCallWndProc(CWnd * 0x0012f564 {CUpload hWnd=0x00080786}, HWND__ * 0x00080786, unsigned int 273, unsigned int 1004, long 133210) line 215 + 26 bytes
AfxWndProc(HWND__ * 0x00080786, unsigned int 273, unsigned int 1004, long 133210) line 368
AfxWndProcBase(HWND__ * 0x00080786, unsigned int 273, unsigned int 1004, long 133210) line 220 + 21 bytes
USER32! 77d48709()
USER32! 77d487eb()
USER32! 77d4b743()
USER32! 77d4b7ab()
COMCTL32! 773f6ff6()
COMCTL32! 773f70d8()
COMCTL32! 773f93dd()
USER32! 77d48709()
USER32! 77d487eb()
USER32! 77d489a5()
USER32! 77d489e8()
USER32! 77d6e819()
USER32! 77d65ce2()
CWnd::IsDialogMessageA(tagMSG * 0x004b3228 {msg=0x00000202 wp=0x00000000 lp=0x000a0009}) line 182
CWnd::PreTranslateInput(tagMSG * 0x004b3228 {msg=0x00000202 wp=0x00000000 lp=0x000a0009}) line 3424
CDialog::PreTranslateMessage(tagMSG * 0x004b3228 {msg=0x00000202 wp=0x00000000 lp=0x000a0009}) line 92
CWnd::WalkPreTranslateTree(HWND__ * 0x0007028e, tagMSG * 0x004b3228 {msg=0x00000202 wp=0x00000000 lp=0x000a0009}) line 2667 + 18 bytes
CWinThread::PreTranslateMessage(tagMSG * 0x004b3228 {msg=0x00000202 wp=0x00000000 lp=0x000a0009}) line 665 + 18 bytes
CWinThread::PumpMessage() line 841 + 30 bytes
CWnd::RunModalLoop(unsigned long 4) line 3478 + 19 bytes
CDialog::DoModal() line 536 + 12 bytes
CBookMarks::OnUpload() line 494
_AfxDispatchCmdMsg(CCmdTarget * 0x00d32050 {CBookMarks hWnd=0x00040730}, unsigned int 1029, int 0, void (void)* 0x00402540 CBookMarks::OnUpload(void), void * 0x00000000, unsigned int 12, AFX_CMDHANDLERINFO * 0x00000000) line 88
CCmdTarget::OnCmdMsg(unsigned int 1029, int 0, void * 0x00000000, AFX_CMDHANDLERINFO * 0x00000000) line 302 + 39 bytes
CView::OnCmdMsg(unsigned int 1029, int 0, void * 0x00000000, AFX_CMDHANDLERINFO * 0x00000000) line 159 + 24 bytes
CWnd::OnCommand(unsigned int 1029, long 329478) line 2088
CWnd::OnWndMsg(unsigned int 273, unsigned int 1029, long 329478, long * 0x0012f834) line 1597 + 28 bytes
CWnd::WindowProc(unsigned int 273, unsigned int 1029, long 329478) line 1585 + 30 bytes
AfxCallWndProc(CWnd * 0x00d32050 {CBookMarks hWnd=0x00040730}, HWND__ * 0x00040730, unsigned int 273, unsigned int 1029, long 329478) line 215 + 26 bytes
AfxWndProc(HWND__ * 0x00040730, unsigned int 273, unsigned int 1029, long 329478) line 368
AfxWndProcBase(HWND__ * 0x00040730, unsigned int 273, unsigned int 1029, long 329478) line 220 + 21 bytes
USER32! 77d48709()
USER32! 77d487eb()
USER32! 77d4b743()
USER32! 77d4b7ab()
COMCTL32! 773f6ff6()
COMCTL32! 773f70d8()
COMCTL32! 773f93dd()
USER32! 77d48709()
USER32! 77d487eb()
USER32! 77d4c00e()
USER32! 77d4e366()
CWnd::DefWindowProcA(unsigned int 514, unsigned int 0, long 786520) line 1000 + 32 bytes
CWnd::WindowProc(unsigned int 514, unsigned int 0, long 786520) line 1586 + 26 bytes
AfxCallWndProc(CWnd * 0x00d32150 {CButton hWnd=0x00050706}, HWND__ * 0x00050706, unsigned int 514, unsigned int 0, long 786520) line 215 + 26 bytes
AfxWndProc(HWND__ * 0x00050706, unsigned int 514, unsigned int 0, long 786520) line 368
AfxWndProcBase(HWND__ * 0x00050706, unsigned int 514, unsigned int 0, long 786520) line 220 + 21 bytes
USER32! 77d48709()
USER32! 77d487eb()
USER32! 77d489a5()
USER32! 77d489e8()
USER32! 77d6e819()
USER32! 77d65ce2()
CWnd::IsDialogMessageA(tagMSG * 0x004b3228 {msg=0x00000202 wp=0x00000000 lp=0x000a0009}) line 182
CWnd::PreTranslateInput(tagMSG * 0x004b3228 {msg=0x00000202 wp=0x00000000 lp=0x000a0009}) line 3424
CFormView::PreTranslateMessage(tagMSG * 0x004b3228 {msg=0x00000202 wp=0x00000000 lp=0x000a0009}) line 213
CWnd::WalkPreTranslateTree(HWND__ * 0x0007028e, tagMSG * 0x004b3228 {msg=0x00000202 wp=0x00000000 lp=0x000a0009}) line 2667 + 18 bytes
CWinThread::PreTranslateMessage(tagMSG * 0x004b3228 {msg=0x00000202 wp=0x00000000 lp=0x000a0009}) line 665 + 18 bytes
CWinThread::PumpMessage() line 841 + 30 bytes
CWinThread::Run() line 480 + 11 bytes
CWinApp::Run() line 400
AfxWinMain(HINSTANCE__ * 0x00400000, HINSTANCE__ * 0x00000000, char * 0x00151f04, int 1) line 49 + 11 bytes
WinMain(HINSTANCE__ * 0x00400000, HINSTANCE__ * 0x00000000, char * 0x00151f04, int 1) line 30
WinMainCRTStartup() line 330 + 54 bytes
KERNEL32!

And here is a disassembly immediately surrounding the code that execution stops on.

7C80979D   lock xadd   dword ptr [ecx],eax

Any help regardning this ........

Re: Problem with CFileDialog (access violation).

Rajesh R Subramanian26-Oct-06 23:07

Rajesh R Subramanian

26-Oct-06 23:07

Isn't your question the same as [This^]

kiranin wrote:
m_strloc = oFileDlg.GetPathName();

Use a CString variable here, instead of that member variable Hmmm | :|

Re: Problem with CFileDialog (access violation).

kiranin26-Oct-06 23:44

kiranin

26-Oct-06 23:44

I already tried it but i got same problem...

Re: Problem with CFileDialog (access violation).

Rajesh R Subramanian26-Oct-06 23:46

Rajesh R Subramanian

26-Oct-06 23:46

	CString str;<br />
<br />
	static TCHAR BASED_CODE szFilter[] = "Windows Setup file (*.pdf;*.xml)|*.pdf;*.xml||";<br />
<br />
	CFileDialog oFileDlg(TRUE,"pdf","",OFN_FILEMUSTEXIST|OFN_NOCHANGEDIR, szFilter);<br />
	oFileDlg.m_ofn.lpstrTitle = "Select the Installable Application";<br />
<br />
<br />
	if(oFileDlg.DoModal() == IDOK)<br />
	{<br />
	str = oFileDlg.GetPathName();<br />
<br />
	AfxMessageBox(str);<br />
	}

This should work fine.

Re: Problem with CFileDialog (access violation).

kiranin26-Oct-06 23:57

kiranin

26-Oct-06 23:57

No it is also getting the same problem after displaying in message box

Re: Problem with CFileDialog (access violation).

Rajesh R Subramanian27-Oct-06 0:38

Rajesh R Subramanian

27-Oct-06 0:38

Is there any thing else you have kept after the message box? If not there has to be no problem at all.

Nobody can give you wiser advice than yourself. - Cicero

Re: Problem with CFileDialog (access violation).

kiranin27-Oct-06 0:42

kiranin

27-Oct-06 0:42

nothing else after messageBox

Re: Problem with CFileDialog (access violation).

David Crow27-Oct-06 4:48

David Crow

27-Oct-06 4:48

It has to do with how you've defined _WIN32_WINNT, most likely as 0x0500. The OPENFILENAME structure used by CFileDialog is the smaller sized one. So, use GetOpenFileName() instead.

"Approved Workmen Are Not Ashamed" - 2 Timothy 2:15

"Judge not by the eye but by the heart." - Native American Proverb

Re: Problem with CFileDialog (access violation).

kiranin27-Oct-06 4:53

kiranin

27-Oct-06 4:53

i cant understand what u said
i defined _WIN32_WINNT like follwing
#define _WIN32_WINNT 0x500

Re: Problem with CFileDialog (access violation).

David Crow27-Oct-06 5:16

David Crow

27-Oct-06 5:16

kiranin wrote:
i cant understand what u said

Which part are you not understanding?

"Approved Workmen Are Not Ashamed" - 2 Timothy 2:15

"Judge not by the eye but by the heart." - Native American Proverb

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