Re: Copy Constructors - C / C++ / MFC Discussion Boards

David Crow11-May-05 3:21

11-May-05 3:21

Kharfax wrote:
There is any way i can update the libs and .h included in VC 6?

Are you using the newest Visual Studio SP and Platform SDK?

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

Re: updating user32.lib

Kharfax11-May-05 3:30

Kharfax

11-May-05 3:30

Im actually downloading the SP6 but dont say anything about updating the included libraries.

My platform SDK, im almost sure is really old, but i cant find it to download.

Maybe is this "Windows® Server 2003 SP1 Platform SDK"?

Re: updating user32.lib

Kharfax11-May-05 3:44

Kharfax

11-May-05 3:44

Yes... Is that, now i should wait to download 400 MB

Thanks

Re: updating user32.lib

David Crow11-May-05 3:50

David Crow

11-May-05 3:50

Kharfax wrote:
Maybe is this "Windows® Server 2003 SP1 Platform SDK"?

Yes. I'm not sure why MS deciced to give it such a name. If connection speed is the issue and you have access to a library with a broadband connection and a CD burner, see if they will let you download it. If you don't want to download it, you can buy the CD. Seems like it is around $10.

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

error C2664: 'TextOutW' : cannot convert parameter 4 from 'char [10]' to 'const unsigned short *'

zeyun11-May-05 2:40

zeyun

11-May-05 2:40

hi, i'm implementing the dijkstra's algorithm. when i complied the .dll file here comes out teh errors:

error C2664: 'TextOutW' : cannot convert parameter 4 from 'char [10]' to 'const unsigned short *'

could anyone help me deal with it?

Re: error C2664: 'TextOutW' : cannot convert parameter 4 from 'char [10]' to 'const unsigned short *'

RChin11-May-05 2:56

RChin

11-May-05 2:56

Sounds like the dll is being compiled with a UNICODE configuration.
Enclose your string with TEXT() or _T("") and it should work.
This will use the appropriate string type (char or wchar_t) for this function.

I Dream of Absolute Zero

Copy Constructors

bhangie11-May-05 2:38

bhangie

11-May-05 2:38

Hi
How would i write c++ code to make sure that a deep copy
takes place with the following class definition?

class CShop<br />
{<br />
public:<br />
CShop();<br />
~CShop();<br />
<br />
private:<br />
CEmployeeContainer* m_pEmployee;<br />
char* m_strShopName;<br />
};<br />

An explanation will also do rather than code.
Thanks in advance.

Education begins a gentleman,
conversation completes him Wink | ;)

Re: Copy Constructors

Bob Stanneveld11-May-05 3:09

Bob Stanneveld

11-May-05 3:09

Hello,

Your subject is the answer! Just write a copy constructor that copies all elements of the container and the string..

Example code:

<br />
CShop::CShop(const CShop& ShopToCopy)<br />
{<br />
m_pEmployee = new CEmployeeContainer();<br />
for( CEmployeeContainer::iterator i = ShopToCopy->m_pEmployee->begin(); <br />
i != ShopToCopy->m_pEmployee->end(); i++ )<br />
{<br />
m_pEmployee->insert(i);<br />
}<br />
<br />
m_strShopName = new char[strlen(ShopToCopy->m_strShopName) + 1];<br />
strcpy(m_strShopName, ShopToCopy->m_strShopName);<br />
}<br />

Hope this helps

I also got the blogging virus..[^]

Re: Copy Constructors

David Crow11-May-05 3:20

David Crow

11-May-05 3:20

In addition to Bob's reply, I would suggest replacing the char* member variable with a string or CString type instead. That's one less memory management detail to have to worry about.

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

Re: Copy Constructors

bhangie11-May-05 3:30

bhangie

11-May-05 3:30

Ok i will, thanks for the help guys much appreciated.

Thanks.

Education begins a gentleman,
conversation completes him Wink | ;)

ToolTip

javi_jmc11-May-05 2:20

javi_jmc

11-May-05 2:20

Hi everybody,

I have several points in an array.
I want to add a code that permits that : if i stop the mouse upon one of this points on the screen show a ToolTip saying which is the order of the array of this point. How can I do it? I know that if instead of stop the mouse; it was doing button-right of the mouse I would have to call ON_WM_RBUTTONDOWN...but in this case? And if once showed the tooltip I move the mouse...how do I make it disappear? I have had a look to the codes already written...but almost all speaks about controls...and I need any point on the screen.

Thanks

Javier

Re: ToolTip

Max Santos11-May-05 3:15

Max Santos

11-May-05 3:15

The WM_MOUSEMOUSE will give you the poit of the mouse. so...

Maximum Number of Controls

Ritheesh V Shetty11-May-05 2:16

Ritheesh V Shetty

11-May-05 2:16

IS there any limit on the maximum number of controls we can add to a Dialogue box resource in VC++. One of my application needs many controls to be added. But after adding may be around 60-70 controls on that dialogue box, now its not allowing me to add any controls. Please suggest.

Ritheesh V Shetty

Re: Maximum Number of Controls

David Crow11-May-05 3:26

David Crow

11-May-05 3:26

Ritheesh wrote:
IS there any limit on the maximum number of controls we can add to a Dialogue box resource in VC++.

Yes, 255 at design time. If you need more than that, add them at run time.

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

Server not receiving notifications of network events for a socket?

arrya_amit11-May-05 1:17

arrya_amit

11-May-05 1:17

Hi experts

In my server side application i have used WSAAsyncSelect() for the purpose of setting it to non blocking mode.

The function executes successfully(returned value is 0) & waits for the client to connect.

Now when i execute my client application, it is able to connect successfully to the server but the server donot receives any notification that the client wants to connect.

Wher am i going wrong.
Waiting for suggestions.

Server side code:

BOOL CDpDlg::OnInitDialog()
{
CDialog::OnInitDialog();

// Add "About..." menu item to system menu.

// IDM_ABOUTBOX must be in the system command range.
ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
ASSERT(IDM_ABOUTBOX < 0xF000);

CMenu* pSysMenu = GetSystemMenu(FALSE);
if (pSysMenu != NULL)
{
CString strAboutMenu;
strAboutMenu.LoadString(IDS_ABOUTBOX);
if (!strAboutMenu.IsEmpty())
{
pSysMenu->AppendMenu(MF_SEPARATOR);
pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
}
}

// Set the icon for this dialog. The framework does this automatically
// when the application's main window is not a dialog
SetIcon(m_hIcon, TRUE); // Set big icon
SetIcon(m_hIcon, FALSE); // Set small icon

SOCKET server;
WSADATA wsaData;

sockaddr_in local;

WORD wVersionRequested = MAKEWORD(2,2);

int wsaret = WSAStartup(wVersionRequested, &wsaData);

if(wsaret != 0)
AfxMessageBox(_T("WSAStartup() failed!"));
else
{
AfxMessageBox(_T("Winsock version 2.2 dll loaded."));

local.sin_family = AF_INET;
local.sin_addr.s_addr = INADDR_ANY;
local.sin_port = htons((u_short)40000);

server = socket(AF_INET, SOCK_STREAM, 0);

if(server == INVALID_SOCKET)
{
AfxMessageBox(_T("Server socket cud not be created"));
return 0;
}
else
AfxMessageBox(_T("Server socket successfully created at the specified port no."));

if(bind(server,(sockaddr*)&local,sizeof(local))!=0)
{
AfxMessageBox(_T("bind() function has failed"));
return 0;
}
else
AfxMessageBox(_T("bind() function has successfully executed!"));

if(listen(server,2)!=0)
{
AfxMessageBox(_T("Server socket has failed to listen for any incoming connections"));
return 0;
}

if (WSAAsyncSelect(server, m_hWnd, WM_WINSOCK_NOTIFY, FD_READ | FD_WRITE | FD_CONNECT | FD_CLOSE) == SOCKET_ERROR)
AfxMessageBox(_T("WSAAsyncSelect() failed to xecute!"));
else
AfxMessageBox(_T("WSAAsyncSelect() xecuted successfully"));

}

return TRUE; // return TRUE unless you set the focus to a control
}
__________________

Re: Server not receiving notifications of network events for a socket?

arrya_amit11-May-05 20:43

arrya_amit

11-May-05 20:43

Hi guys
Can any body provide me with any suggestions.

Regards

how to use apihook to hide a file or directory?

sharkmouse11-May-05 0:43

sharkmouse

11-May-05 0:43

hello,
i want to use the apihook to hide a specific file or directory,not let any user to see the file and directory expect me?
what can i do?

Re: how to use apihook to hide a file or directory?

David Crow11-May-05 3:29

David Crow

11-May-05 3:29

I'm curious what a hook has to do with hiding a file/directory. Just change the security permissions of the object so that only you, or a group to which you belong, can access the object.

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

Win32SDK Printer

Rolandjr11-May-05 0:37

Rolandjr

11-May-05 0:37

Hi all,
this is roland working in S/W Comp. in pune I am doing a project in SDK which is related to desktop in which I also used printer for that i have taken a handle of printer.. i want the o/p as when user selects a perticular area on dektop he should get only that selected area on paper after printing...I am getting print on paper but problem is that print which i get is very small .. i am not getting WYSIWYG effect on paper. the print image gets compressed ...why this happen ? i am tring this from yesterday so plz can anybody help me for this solution.....
i hope i will get sol. from someone
thanking you
Roland

Re: Win32SDK Printer

Anonymous11-May-05 1:01

Anonymous

11-May-05 1:01

The print resolution of the printer (typically 600 pixels per inch) is much greate r than that of the screen (typically 72 pixels per inch) so you must use StretchBlt if you want it to appear tyhe same physical size on the higher resolution device.

Start program hidden on startup

ddmcr11-May-05 0:34

ddmcr

11-May-05 0:34

I have a dialog-based app which runs in tray and loads at windows startup, but problem is i don't want to abuse user by showing up this dialog at every startup so i need it to start hidden(in tray) .

Can anyone help??

Regards

m0n0

Re: Start program hidden on startup

ThatsAlok11-May-05 0:40

ThatsAlok

11-May-05 0:40

Giorgi Moniava wrote:
start hidden(in tray) .

Hide you dialog by techniques Demonstarted in this article->
http://www.codeproject.com/dialog/dlgboxtricks.asp[^]

Write Code for Shell Tray icon in the OnInitDialog handller to show Tray Icon at Startup of your application.

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers,
Alok Gupta

Re: Start program hidden on startup

ddmcr11-May-05 0:50

ddmcr

11-May-05 0:50

My problem is not to start dialog hidden or create a tray icon, my problem is to do that only at windows startup .
I want that when windows starts the dialog was simply launched in tray .

Regards,

Re: Start program hidden on startup

ThatsAlok11-May-05 1:01

ThatsAlok

11-May-05 1:01

Giorgi Moniava wrote:
I want that when windows starts the dialog was simply launched in tray .

Till I Understand, you want to hide you Dialog only at startup otherwise it always start in shown state , Right!

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers,
Alok Gupta

Re: Start program hidden on startup

ddmcr11-May-05 1:05

ddmcr

11-May-05 1:05

Yes right !

m0n0

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