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I have created a win32 resource dll which has only string table, also i have included \NOENTRY in linker options in-order to make it as resource only dll
Now I am loading the dll in MFC application and loads fine but when I am try to get the string from the string table it doens't load. Here is my code:
HINSTANCE hinsttance = ::LoadLibrary("SampleEN.dll");
DWORD dwError = GetLastError();
if (!hinsttance)
{
AfxMessageBox("Failed to load");
}
else
{
HINSTANCE hInstResourceClient = AfxGetResourceHandle();
AfxSetResourceHandle(hinsttance);
LPCTSTR lpszName = MAKEINTRESOURCE(1);
HRSRC hrsrc = FindResource(m_hinstLib, lpszName, RT_STRING);
if (hrsrc)
{
TCHAR szTemp[256];
LoadString(m_hinstLib, IDC_STATIC_TOP, szTemp, 255);
}
AfxSetResourceHandle(hInstResourceClient);
}
what could be the problem???
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Super Hornet wrote: HRSRC hrsrc = FindResource(m_hinstLib, lpszName, RT_STRING);
What is m_hinstLib?
It should be hinsttance.
Then use the handle returned by FindResource in a call to LoadResource.
To access the actual resource call LockResource on the handle returned by LoadResource.
«_Superman_»
I love work. It gives me something to do between weekends.
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Actually it's - hinsttance, mistakenly written here as m_hinstLib
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Where exactly does it fail?
Is it the FindResource that is failing or is it LoadString?
Try it without the AfxSetResourceHandle call.
«_Superman_»
I love work. It gives me something to do between weekends.
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Modified code according to your suggestion:
HINSTANCE hinstance = ::LoadLibrary("SampleEN.dll");
if (!hinstance)
{
AfxMessageBox("Failed to load");
}
else
{
HINSTANCE hInstResourceClient = AfxGetResourceHandle();
AfxSetResourceHandle(hinstance);
LPCTSTR lpszName = MAKEINTRESOURCE(1);
HRSRC hrsrc = FindResource(hinstance, lpszName, RT_STRING);
if (hrsrc)
{
HGLOBAL hglobal = LoadResource(hinstance, hrsrc);
LockResource(hglobal);
TCHAR szTemp[256];
LoadString(hinstance, IDC_STATIC_TOP, szTemp, 255);
}
AfxSetResourceHandle(hInstResourceClient);
}
even now the string is empty. I get the error code: 1814 - which says resource couldn't be found. But I have re-verfied that the ID exists in the string table
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I have tried commenting the statement
AfxSetResourceHandle(hinstance); but the same error
The error code 1814 comes after LaodString call
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Now I am able to get the correct value's
The problem is with resource id's, I haven't defined same resource id in dll and in mfc application.
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Super Hornet wrote: m_hinstLib
What's that? Your resource DLL's handle is hinsttance ...
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thank you for pointing the error
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I m doing a database application.
in my OnNewDocument() i have the following code..
HRESULT hr;
try
{
AfxMessageBox("Inside try executed.",NULL,MB_OK); //Excecuted
hr = m_pConnection.CreateInstance(__uuidof(Connection));
AfxMessageBox("Created instance executed.",NULL,MB_OK);
if(SUCCEEDED(hr))
{
AfxMessageBox("If hr succeeded.",NULL,MB_OK);//Not Executed
hr = m_pConnection->Open(_bstr_t(L"Provider=sqloledb;Data Source=C:\\Program Files\\Microsoft SQL Server\\MSSQL\\Data\\LibDB.mdf;"),_bstr_t(L""),_bstr_t(L""),adModeUnknown);
if(SUCCEEDED(hr))
{
AfxMessageBox("Open connection executed.",NULL,MB_OK); //not executed
m_pConnection=TRUE;
}
}
AfxMessageBox("out",NULL,MB_OK);
}
catch(_com_error &e)
{
_bstr_t bstrSource(e.Source());
_bstr_t bstrDescription(e.Description());
TRACE( "Exception thrown for classes generated by #import" );
TRACE( "\tCode = %08lx\n", e.Error());
TRACE( "\tCode meaning = %s\n", e.ErrorMessage());
TRACE( "\tSource = %s\n", (LPCTSTR) bstrSource);
TRACE( "\tDescription = %s\n", (LPCTSTR) bstrDescription);
}
catch(...)
{
TRACE( "*** Unhandled Exception ***" );
}
return TRUE;
}
In the above code the if(SUCCEEDED(hr)) block is not executed.What could be the reason ?
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An hint is given by the hr value.
If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.
This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke
[My articles]
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vital_parsley2000 wrote: if(SUCCEEDED(hr)) block is not executed.What could be the reason ?
Get the hr value and pass it to FormatMessage function. You will get the cause.
To convert an HRESULT to DWORD you can use the following code snippet!
BOOL WIN32_FROM_HRESULT(HRESULT hr, OUT DWORD *pdwWin32)
{
if ((hr & 0xFFFF0000) == MAKE_HRESULT(SEVERITY_ERROR, FACILITY_WIN32)) {
*pdwWin32 = HRESULT_CODE(hr);
return TRUE;
}
if (hr == S_OK) {
*pdwWin32 = HRESULT_CODE(hr);
return TRUE;
}
return FALSE;
}
I found this from here
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where do i insert this
code ?
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vital_parsley2000 wrote: where do i insert this code ?
 In your source files, dear!
It is a function, you can either put it in your .cpp file or .h file in global scope or add as a member function in your class.
Am I missing something ?
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Another Tip:
Put the variable hr in the debug watch window, append ", hr" (without the quotes) to it to have Visual C++ translate it for you!
Or you can use pseudo variable $err as $err,hr in Watch window.The $err pseudo variable provides the value, and the hr format specifier tells the watch window to format it as an error code.
http://i.msdn.microsoft.com/dd252945.fig05_L(en-us).gif[^]
modified on Thursday, May 14, 2009 2:21 AM
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vital_parsley2000 wrote: In the above code the if(SUCCEEDED(hr)) block is not executed.
Which one?
vital_parsley2000 wrote: What could be the reason ?
CreateInstance() or Open() failed and control did not return to the subsequent if() statement.
"Old age is like a bank account. You withdraw later in life what you have deposited along the way." - Unknown
"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
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Hi,
I'm developing an application and i would display data from database(access, sqlserver, oracle) in a bcg grid.
So can someone help me by a simple example of code or how can i do for this.
Thank you very much.
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is this solution will work with SqlServer and Oracle database ?
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khaliloenit wrote: is this solution will work with SqlServer and Oracle database ?
Had you bothered to go through the links given to you, then you would have noticed the answer to your same exact question in the CP article:
"The sample has been tested with both MS Access and SQL Server, in theory you should be able to use it against all data sources that support OLE-DB."
It is a crappy thing, but it's life -^ Carlo Pallini
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Sorry, but there is a solution with BCG Grid?
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Please i try to use MS DataGrid in the Using MS DataGrid control with ADO[^] but i work with VS2003 and i don't find where i can add the Microsoft datagrid control with ADO !!!!?
So can you help me
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Below is the code to append Bstr, but in debug mode it gives error
' ::SysFreeString(dest); ' and in release mode if i dont write ' ::SysFreeString(dest); ' it corrupts heap. What optimization i do.
BSTR StringAppend(const BSTR dest,const BSTR src)
{
long destLen=::SysStringByteLen(dest);
long srcLen=::SysStringByteLen(src);
BSTR st3 = ::SysAllocStringByteLen(NULL,destLen+srcLen);
try
{
if(st3==NULL)
{
throw "Insufficient Memory";
}
else
{
wcscpy(st3, dest);
wcscat(st3, src);
::SysFreeString(dest);// here it gives error in debug mode
}
}
catch(char * error)
{
throw error;
}
return st3;
}
“You will never be a leader unless you first learn to follow and be led.”
–Tiorio
"Coming together is a beginning, staying together is progress, and working together is success." Henry Ford
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A const BSTR dest ?
Why const ?
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Why are you freeing dest?
If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.
This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke
[My articles]
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