Re: Problems in Client/Server Implementation of an MFC application - C / C++ / MFC Discussion Boards

Re: problem invoking method of active-x control

Galatei1-Dec-06 0:33

1-Dec-06 0:33

Hi,

It seems that pObj is not created.
Are you certain that this ActiveX control does contain runtime license key? You should check for its availability with GetLicInfo. One of the members of LICINFO structure, fRuntimeKeyAvail, does specify if such license can be obtained, by using RequestLicKey. If there's no runtime license, you have to provide license key, manually.

Also, check hr2 for errors, when creating instance.

Regards

Re: problem invoking method of active-x control

pv_pravin1-Dec-06 18:16

pv_pravin

1-Dec-06 18:16

I am able to get license key. the active-x control is getting instantiated. But problem is with invoking method/properties of the control. I get access violation error.

regarding hr2, it is returning S_OK.

Thanks & Regards,
Praveen A.

using an ADT object [modified]

Spherelin30-Nov-06 22:54

Spherelin

30-Nov-06 22:54

I am working on a C++ class project in MSVC. I have declared:

class Node
{
private:
.
.
.

public
.
.
.
};

now in a separate file, I want to declare:

class Employee
{
private:
Node alphabetagamma; // for example
.
.

public:
.
.
.

};

When I do this I get compile time errors indicating that the compiler does not recognize "Node" as a type of object. I am including the header files correctly in my implementation (.cpp) files. What am I forgetting?

Thanks,
Geoff Cry | :((

-- modified at 5:02 Friday 1st December, 2006

Re: using an ADT object

Cedric Moonen30-Nov-06 23:12

Cedric Moonen

30-Nov-06 23:12

Spherelin wrote:
I am including the header files correctly in my implementation (.cpp) files

If you declare an instance of Node in your header file, then you need of course to include the header file of Node in thie file also (otherwise, the class Node is not recognized).

Cédric Moonen
Software developer

Charting control [v1.1]

Re: using an ADT object

Spherelin30-Nov-06 23:41

Spherelin

30-Nov-06 23:41

okay thanks - that fixed it!

hey so if I am entering a number via a statement like:

cin >> selection

how do I clear cin for the next use.

basically, user is going to enter a number (text entry program...for now). and then the next entry is going to be characters - like a name or state.

Right now, it seems to take the strike of the return key as the second entry.

THanks,
G

Problems in Client/Server Implementation of an MFC application

Vinod Sankaranarayanan30-Nov-06 22:10

Vinod Sankaranarayanan

30-Nov-06 22:10

Dear All,

I am doing a project , which is an MFC application (MDI)
. Now its a standalone application with MS Access as the "Back end". I
have used ADO to made the connection.

Now I want to make this application to work for several clients
at the same time . I also want this application to communicate with 3
different types of Database .

1) MySQL

2) MS SQL Server

3) Oracle

My application should connect with any of the above DB , without making
any problem..

Can I make a general implementation by using ADO ?

What are the precautions I have to take to implement this ?

I think ,I have to face the problems of "concurrent write/reads " to
the DB...How can I overcome this ?

Now I am using Multiple SQL queries for multiple table updations.
Whether I can use transactions to avoid data loss during multiple table
updations...?

But I think MySQL won't support transactions...Is there any other
option?

Can any one pls give me a suggestion ...?

Thanks in advance...

vinsankar

Re: Problems in Client/Server Implementation of an MFC application

Galatei1-Dec-06 0:22

Galatei

1-Dec-06 0:22

Hi,

MySQL DO support transactions. Never doubt in a free software, just because it's free.

Using transactions is exactly what you need to handle concurrent access.

Regards

Re: Problems in Client/Server Implementation of an MFC application

Vinod Sankaranarayanan1-Dec-06 1:30

Vinod Sankaranarayanan

1-Dec-06 1:30

Hi,

Galatei wrote:
MySQL DO support transactions. Never doubt in a free software, just because it's free.

Thanks for correcting me...

I have no doubt over the power of MySQL .

But Is there any other issues I have to handle to implement the Client/Server technology ?

Whether I can port my existing application (uses ADO with ACCESS) to the above implementation without spending much time for development ?

Is there any useful books or articles I have to read before designing it?

Thanks in advance...

vinsankar

Pasting same file version to multiple cells using ORCA

rp_suman30-Nov-06 21:03

rp_suman

30-Nov-06 21:03

I want to paste the same file version to many files in the "File" table of .MSI file using ORCA tool. But I can paste in a single cell only. I want to paste in multiple cells at a time. I hope somebody knows how to do. Becuase, it is difficult to paste in each cell if there are lot of files.
Thanks in Advance!
Suman

how to get correct ppd file for a given printer?

chandkavi30-Nov-06 20:48

chandkavi

30-Nov-06 20:48

I used the Windows API function GetPrinterDriver() for getting the .ppd file for a specified printer. But for some printers this function is returning a .pdf file instead of .ppd file. can anyone help me to solve this and get a ppd file not pdf file. the following is the code i have written.

Note: In the following code. Only for printer named RIO-219 the Driver Name I am getting is .pdf file , for all others i am getting .ppd files.

void CPrinterDriverInformationDlg::OnBnClickedBtnPrintinfo()
{

// TODO: Add your control notification handler code here
HANDLE hPrinter;
CString strDriverName;
CString strDriverPPDFile;
DWORD dw;
DRIVER_INFO_4* pDriverInfo;
int index = 0;

// The following are the list of printers installed in my system.
const LPWSTR printerTbl[] =
{
L"Rio-219",
L"k2-212",
L"Den-203",
L"gl1010",
L"Hud-224",
NULL
};

while (printerTbl[index] != NULL)
{
if (OpenPrinter(printerTbl[index], &hPrinter, NULL))
{
if (! GetPrinterDriver(hPrinter, NULL, 4, NULL, 0, &dw))
{
BYTE* p = new BYTE[dw];
GetPrinterDriver(hPrinter, NULL, 4, p, dw, &dw);
pDriverInfo = (DRIVER_INFO_4*) p;
strDriverName = pDriverInfo->pName;
strDriverPPDFile = pDriverInfo->pDataFile;
delete [] p;
}

ClosePrinter(hPrinter);
}

++index;
}
}
thank you

Retrieve URLS of all opened browser Windows?

kiranin30-Nov-06 20:45

kiranin

30-Nov-06 20:45

how to retrieve URL's of opened browser windows?

Re: Retrieve URLS of all opened browser Windows?

kanduripavan3-Dec-06 2:08

kanduripavan

3-Dec-06 2:08

hi,
One way i had tried out. Please follow the steps.
1. Enumerate all Destopwindows(Parent is Null)
2. Check the class Name of the window is "CabinetWClass" or "IEFrame"
3. If it is so and the browser is having only one window ie url edit window
then enumerate the child windows of the current window till u recive an edit window and the get the required text.

Like this i tried and got it. If u require any code i can post u later.

Thank you,
Manu

Manu

Re: Retrieve URLS of all opened browser Windows?

kiranin3-Dec-06 7:06

kiranin

3-Dec-06 7:06

plz gimme some more detailed explaination or code..
Anyway thanks for replying me...

Re: Retrieve URLS of all opened browser Windows?

kanduripavan3-Dec-06 21:04

kanduripavan

3-Dec-06 21:04

//[
BOOL CALLBACK EnumChildProc(HWND hwndChild, LPARAM lParam)
{
long lIDChild=0;
char szClasName[_MAX_PATH]={0};
::GetClassName(hwndChild, szClasName,50);
if (strcmp(szClasName,"Edit") ==0) //The Url Edit window (Assumed)
{
char szUrl[_MAX_PATH];//Url String
memset(szUrl, 0, _MAX_PATH);
::SendMessage(hwndChild, WM_GETTEXT, _MAX_PATH, (LPARAM)szUrl);
}

lIDChild = GetWindowLong(hwndChild, GWL_ID);
return TRUE;
}

BOOL CALLBACK EnumProc( HWND hwnd, LPARAM lParam )
{

char szClasName[_MAX_PATH];
DWORD dwThreadId;
HDESK hdesk;

dwThreadId = GetWindowThreadProcessId( hwnd, NULL );
memset(szClasName, 0, _MAX_PATH);
::GetClassName(hwnd, szClasName,50);
if ( (strcmp(szClasName, "CabinetWClass")==0) || (strcmp(szClasName, "IEFrame")==0) )//Explorer or IE window
{
EnumChildWindows(hwnd, EnumChildProc,(LPARAM) NULL); //Enumerate through its child windows
}

hdesk = GetThreadDesktop( dwThreadId );

if( hdesk && hdesk != (HDESK)lParam )
return FALSE;

return TRUE;
}

//]

void CWindTestDlg::OnOK()
{
HDESK hdesk;
hdesk = GetThreadDesktop( GetCurrentThreadId() );
EnumDesktopWindows( hdesk, EnumProc, (LPARAM)hdesk );
return;
}

Just try this. all the best,If any problems please let me know

Manu

want the result of child process

Mushtaque Nizamani30-Nov-06 20:36

Mushtaque Nizamani

30-Nov-06 20:36

I have a command "regsvr32 "c:\temp\temp.dll", I am executing that in my program by WinExec API, but that API only returns the result that it has executed application "RegSvr32.exe" or not, but i don't get the complete result i.e "regsvr32 "c:\temp\temp.dll" i.e temp.dll has been register sucessfully or not, any hint to get the complete result of a child process.

Warm Regards,
Mushq

Re: want the result of child process

Mike_V30-Nov-06 20:48

Mike_V

30-Nov-06 20:48

You need to use CreateProcess instead.

It will give you a process handle in one of the structures you pass it.

If CreateProcess returns successfully, WaitForSingleObject the process handle (assuming you are not in a GUI thread) and then call the magic api function GetExitCodeProcess. Oh - and don't forget to CloseHandle on the returned process and thread handles.

HTH
Mike

Re: want the result of child process

Mushtaque Nizamani2-Dec-06 3:58

Mushtaque Nizamani

2-Dec-06 3:58

It is working perfact. Smile | :)

Mike Thank you very much.

Warm Regards,
Mushq

Re: want the result of child process [modified]

prasad_som30-Nov-06 21:38

prasad_som

30-Nov-06 21:38

I hope you have used this code.

WinExec("regsvr32   c:\\MyDll.dll",0);

If yes, It works perfectly(It show messagebox of succes or failure).

-- modified at 3:45 Friday 1st December, 2006

Prasad
Notifier using ATL | Operator new[],delete[][^]

Re: want the result of child process

Mushtaque Nizamani30-Nov-06 23:06

Mushtaque Nizamani

30-Nov-06 23:06

Dear Parsad, you are 100% right, but the problem is that I want to run that command in silent mode, with out prompting a message box.

Regards,
Mushq

Re: want the result of child process

prasad_som1-Dec-06 1:08

prasad_som

1-Dec-06 1:08

then you need to pass this string.
"regsvr32 /s mydll.dll"

Prasad
Notifier using ATL | Operator new[],delete[][^]

Re: want the result of child process

Mushtaque Nizamani1-Dec-06 1:26

Mushtaque Nizamani

1-Dec-06 1:26

Not necessarily, WinExec("regsvr32 mydll.dll" , SW_HIDE), this can also work for silence.

Re: want the result of child process

prasad_som1-Dec-06 1:41

prasad_som

1-Dec-06 1:41

NO , it wont(Try it with above code). Second parameter is for window based applications.
You need to mention /s.

As mentioned in MSDN, use CreateProcess, with command line options given.

Prasad
Notifier using ATL | Operator new[],delete[][^]

Re: want the result of child process

Mushtaque Nizamani1-Dec-06 1:46

Mushtaque Nizamani

1-Dec-06 1:46

Yes you are right, I am extremely sorry of my previous comments.

Re: want the result of child process

Tony Hill30-Nov-06 23:50

Tony Hill

30-Nov-06 23:50

Would it not be easier to register the dll yourself (see below).

HINSTANCE hDll;
HRESULT  hReply;
HRESULT (FAR *lpDll) (void);

hDll = LoadLibrary(szFile);

if (hDll > (HINSTANCE)32)
{
    if (bRegistering)
    {
        lpDll = (HRESULT (FAR *) (void)) GetProcAddress(hDll, "DllRegisterServer");
    }
    else
    {
        lpDll = (HRESULT (FAR *) (void)) GetProcAddress(hDll, "DllUnregisterServer");
    }
        hReply = (*lpDll)();

        if (hReply != 0)
        {
            // Display register/unregister error message here
        }
    }

    FreeLibrary(hDll);
}
else
{
    // Display Dll load error here
}

Using CString in WIN32 Application.

VCSharp00730-Nov-06 20:00

VCSharp007

30-Nov-06 20:00

How can we use CString in WIN32 Application ??

Thanx in advance.

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