Basic C++ question. - C / C++ / MFC Discussion Boards

Scott H. Settlemier17-Oct-02 11:44

17-Oct-02 11:44

That reminds me of a question:
How can one determine the process(es) by which
the file is in use? It's be nice to have a little
utility that reports who has what files open.

Re: Delete files that are in use

Joe Woodbury17-Oct-02 17:59

Joe Woodbury

17-Oct-02 17:59

Scott H. Settlemier wrote:
How can one determine the process(es) by which
the file is in use?

http://www.sysinternals.com/[^]

Has just such a utility

Compile error caused bu "#import <netcfgx.dll>"

Tida17-Oct-02 8:38

Tida

17-Oct-02 8:38

Dear all,
I need to use INetCfg COM interface.
so I import it's dll in my project
#import <netcfgx.dll>
but got the following error:
/////////////////
fatal error C1083: Cannot open type library file: 'netcfgx.dll': Error loading type library/DLL.
////////////////////
I can find this netcfgx.dll under the WINNT/system32/

Need Help!

Laura

Re: Compile error caused bu "#import <netcfgx.dll>"

Joaquín M López Muñoz17-Oct-02 8:49

Joaquín M López Muñoz

17-Oct-02 8:49

Try with #import "C:\\WINNT\\system32\\netcfgx.dll".

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

Still doesn't work when using #import "C:\\WINNT\\system32\\netcgfx.dll"

Tida17-Oct-02 9:36

Tida

17-Oct-02 9:36

still doen't work

any other idea?

Re: Compile error caused bu "#import <netcfgx.dll>"

Todd Smith17-Oct-02 11:51

Todd Smith

17-Oct-02 11:51

Here are some other examples. Not sure what you need exactly.

#import "EventSrc\Debug\EventSrc.dll" no_namespace named_guids
#import "..\Bin\SystemCPU.dll" raw_interfaces_only, raw_native_types, no_namespace, named_guids
#import "C:\PROGRAM FILES\MICROSOFT OFFICE\OFFICE\MSO97.DLL" raw_interfaces_only
#import "..\DemoCallback\debug\DemoCallback.dll" named_guids raw_interfaces_only 
#import "..\Server\ES.tlb" no_namespace, named_guids, raw_interfaces_only, raw_native_types
#import "c:\Program Files\Common Files\System\ADO\msado15.dll" no_namespace rename("EOF", "EndOfFile")

Todd Smith

Re: Compile error caused by "#import <netcfgx.dll>"

Tida18-Oct-02 4:49

Tida

18-Oct-02 4:49

It is not the attributes but the dll itself cannot be opened.
( I tried differenct attributes, still doesn't work)

Basic C++ question.

Anonymous17-Oct-02 8:13

Anonymous

17-Oct-02 8:13

If i write this:

char *szFileNameOnly[999];

will all the char pointers be initialized to zero or do i have to do that myself?

Thanks

Re: Basic C++ question.

C^hris L^osinger17-Oct-02 8:16

C^hris L^osinger

17-Oct-02 8:16

you will have to do that yourself. C/C++ doesn't initialize anything for you (unless it has a constructor, or if you're in debug mode using MSVC's compiler).

-c

Alcohol is the anesthesia by which we endure the operation of life.
-- George Bernard Shaw

Smaller Animals Software

Re: Basic C++ question.

Joaquín M López Muñoz17-Oct-02 8:17

Joaquín M López Muñoz

17-Oct-02 8:17

Gosh, you typed faster than me Smile | :)

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

Re: Basic C++ question.

C^hris L^osinger17-Oct-02 8:18

C^hris L^osinger

17-Oct-02 8:18

Alcohol is the anesthesia by which we endure the operation of life.
-- George Bernard Shaw

Smaller Animals Software

Re: Basic C++ question.

Nish Nishant17-Oct-02 8:22

Nish Nishant

17-Oct-02 8:22

Joaquín M López Muñoz wrote:
Gosh, you typed faster than me

Not only did he type faster than you, he also typed thrice as many words as you did Smile | :)

Nish

Author of the romantic comedy

Summer Love and Some more Cricket [New Win]

Review by Shog⁹
Click here for review[NW]

Re: Basic C++ question.

Joaquín M López Muñoz17-Oct-02 8:24

Joaquín M López Muñoz

17-Oct-02 8:24

Come on, add to my frustation Smile | :)

PS: Excellent strings tutorial.

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

Re: Basic C++ question.

Joaquín M López Muñoz17-Oct-02 8:17

Joaquín M López Muñoz

17-Oct-02 8:17

You have to do it yourself.

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

Re: Basic C++ question.

Maximilien17-Oct-02 8:23

Maximilien

17-Oct-02 8:23

You should always initialize variables when declaring them.

Max.

Re: Basic C++ question.

Chris Richardson17-Oct-02 8:26

Chris Richardson

17-Oct-02 8:26

C++ doesn't automatically do it for you, but it does have easy ways for you to do it. This statement will cause all the pointers to be initialized to zero:

char *szFileNameOnly[999] = {0};

Chris Richardson

Re: Basic C++ question.

Anonymous17-Oct-02 9:14

Anonymous

17-Oct-02 9:14

Thanks for you advice. Can this also be done when the variable has already been declared? If so, how? Cause I'm getting an error when trying to do it.

Re: Basic C++ question.

Chris Richardson17-Oct-02 9:18

Chris Richardson

17-Oct-02 9:18

If you want to zero all the pointers after the variable has been declared, you can use memset:

memset( szFileNameOnly, 0, sizeof( szFileNameOnly ) );

Chris Richardson

Unsupported operation ?

ssirisha17-Oct-02 8:09

ssirisha

17-Oct-02 8:09

I have a COM DLL built with VC++6 and it has dialog resources using activex controls such as MsFlexGrid and CTreeCtrl etc.

I have two main applications(AppSimple and AppWithLotOfDlgResources) that can use this dll.
When I use AppSimple to call this Dll, it works fine both in Debug and Release modes.

The problem is when I use AppWithLotOfDlgResources application as the calling program, I am getting "Unsupported operation" only in RELEASE build.

Q. Is there some kind of a conflict in resources between the DLL and the AppWithLotOfDlgResources ?

Please help
Thanks

Another CView question

ns17-Oct-02 8:01

17-Oct-02 8:01

When I do stuff like:

POSITION pos = pDoc->GetFirstViewPosition();
while (pos!=NULL)
{
CView* pView = pDoc->GetNextView(pos);

I dont have the second view created or instantiated. Yet the code still works. Is this weird? Does the doc automatically know which views it has even if I dont do:

pChild = (CMDIChildWnd*) pTemplate->CreateNewFrame(pDoc, NULL );

if( pChild == NULL ) return FALSE;

pChild->MDIActivate();


pTemplate->InitialUpdateFrame( pChild, pDoc);

on it? (I do the createframe when I switch views). Am I creating the view here? I've used the first snippet even when the second snippet has not been executed..and it works

Appreciate your help,
ns

GetOpenFileName returns invalid parameter...

Anonymous17-Oct-02 7:58

Anonymous

17-Oct-02 7:58

here's my OPENFILENAME struct:

char szFileNames[(MAX_PATH+1)*1000+1];

ofn.lStructSize = sizeof(ofn);
ofn.hwndOwner = ghWnd;
ofn.hInstance = ghInstance;
ofn.lpstrFilter = "All Files (*.*)\0*.*\0";;
ofn.lpstrCustomFilter = NULL;
ofn.nMaxCustFilter = NULL;
ofn.nFilterIndex = 1;
ofn.lpstrFile = szFileNames;
ofn.nMaxFile = (MAX_PATH+1)*1000+1;
ofn.lpstrFileTitle = NULL;
ofn.nMaxFileTitle = NULL;
ofn.lpstrInitialDir = "C:\\";
ofn.lpstrTitle = "Open File(s)";
ofn.Flags = OFN_ENABLESIZING | OFN_FILEMUSTEXIST | OFN_HIDEREADONLY | OFN_PATHMUSTEXIST | OFN_ALLOWMULTISELECT | OFN_EXPLORER | OFN_NODEREFERENCELINKS | OFN_NONETWORKBUTTON;
ofn.nFileOffset = NULL;
ofn.nFileExtension = NULL;
ofn.lpstrDefExt = "*.*";
ofn.lCustData = NULL;
ofn.lpfnHook = NULL;
ofn.lpTemplateName = NULL;

ghWnd is a valid handle to my main window and ghInstance is also a valid handle to my apps memory block

When i run the GetOpenFileName function it returns false, and a call to GetLastError returns "invalid parameter", what am i doing wrong?

Thanks

Button::SetIcon()

Ruca17-Oct-02 7:53

Ruca

17-Oct-02 7:53

Hi,
I am using VC++ 7.0 and am trying to load an icon, which I have as one of my resources, into my button. The button is created dynamically.
Here is the code that I have:
button->Create("SMS", WS_CHILD | WS_VISIBLE | BS_FLAT | BS_ICON,
CRect(0,0,0,0), &m_wndStatusBar, IDC_BUTTON_STATUS_BAR);
button->SetIcon(::LoadIcon(NULL, MAKEINTRESOURCE(IDI_ICON1) ) );

This does not seem to work. I know it worked in VC++ 6.0.

Can anyone help me out here?

Thanking you in anticipation

Rui

Re: Button::SetIcon()

alannx21-Aug-12 15:48

alannx

21-Aug-12 15:48

m_ctrlViewList.SetIcon(AfxGetApp()->LoadIcon(IDI_VIEW_LIST));

which m_ctrlViewList is a CButton, more...the icon size is in 32 pixel

==================
BTW, if you want set a other size of icon, like 16*16 size, you can code like this..

//.h file
CImageList m_ButtonImages;

//.cpp file
m_ButtonImages.Create(16,16,ILC_COLOR32 ,2,2); //create you icon list

m_ButtonImages.Add(AfxGetApp()->LoadIcon(IDI_VIEW_ICON ));
m_ButtonImages.Add(AfxGetApp()->LoadIcon(IDI_VIEW_LIST ));

m_ctrlViewIcon.SetIcon( m_ButtonImages.ExtractIcon(0));
m_ctrlViewList.SetIcon(m_ButtonImages.ExtractIcon(1));

modified 21-Aug-12 22:10pm.

CView* pView

ns17-Oct-02 7:49

17-Oct-02 7:49

THis is what I want to do: clear a listbox in view2, and repopulate it.

POSITION pos = pDoc->GetFirstViewPosition();
while (pos!=NULL)
{
    CView* pView = pDoc->GetNextView(pos);
    ASSERT_VALID(pView);

    pView->m_list1.DeleteAllItems();

    pView->PostMessage(WM_COMMAND, IDC_BUTTONHIDEV2,0);
}

THis line gives an error error C2039: 'm_list1' : is not a member of 'CView'
pView->m_list1.DeleteAllItems();

My View class is called TView1. How do I make this work?

Appreciate your help,
ns

Re: CView* pView

Joaquín M López Muñoz17-Oct-02 7:56

Joaquín M López Muñoz

17-Oct-02 7:56

TView1* pView = (TView1 *)(pDoc->GetNextView(pos));

or if you like the C++ cast syntax:

TView1* pView = static_cast<TView1 *>(pDoc->GetNextView(pos));

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

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