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From: --== Alain ==-- on 30 Sep 2006 15:15
Hi,

I'm still working on my DLL and is function to extract strings from the
stringtable stored in the DLL.

it looks like that :
// -- mydll.cpp
extern "C" __declspec(dllexport) LPTSTR GetString(int Index)
{
TCHAR res[2048];
::LoadString(GetModuleHandle(NULL),Index, res, sizeof(res)/sizeof(TCHAR));
LPTSTR Answer(res);
return((Answer));
}
// -- mydll.h
extern "C" __declspec(dllexport) LPTSTR GetString(int Index);

however, on code --> ::LoadString(GetModuleHandle(NULL),Index, res,
sizeof(res)/sizeof(TCHAR));
res is always empty... i guess that issue is with getModuleHandle.
However, after reading some post on internet, it seems correct...so
where is the mistake ?

thx,

Al.
From: Alex Blekhman on 30 Sep 2006 15:38
"--== Alain ==--" wrote:
>
> I'm still working on my DLL and is function to extract
> strings from the stringtable stored in the DLL.
>
> it looks like that :
> // -- mydll.cpp
> extern "C" __declspec(dllexport) LPTSTR GetString(int
> Index)
> {
> TCHAR res[2048];
> ::LoadString(GetModuleHandle(NULL),Index, res,
> sizeof(res)/sizeof(TCHAR));
> LPTSTR Answer(res);
> return((Answer));
> }
> // -- mydll.h
> extern "C" __declspec(dllexport) LPTSTR GetString(int
> Index);
>
> however, on code -->
> ::LoadString(GetModuleHandle(NULL),Index, res,
> sizeof(res)/sizeof(TCHAR));
> res is always empty... i guess that issue is with
> getModuleHandle.
> However, after reading some post on internet, it seems
> correct...so where is the mistake ?


The mistake is that GetModuleHandle(NULL) will return handle
to the module used to create the running process. I.e., your
..EXE file, not .DLL, which contains string table.
Youy could eliminate `GetString' function at all. Just
store somewhere in main program handle to the .DLL and call
CString::LoadString with this handle passed as first
parameter and string index as second.

HTH
Alex

From: --== Alain ==-- on 30 Sep 2006 15:48
Yes i understand but it means to link statically my resource string
table to my exe. i would like to avoid it.

So my question is how can i get the Handle of the DLL ?
thx,

Al.

Alex Blekhman wrote:
> "--== Alain ==--" wrote:
>>
>> I'm still working on my DLL and is function to extract strings from
>> the stringtable stored in the DLL.
>>
>> it looks like that :
>> // -- mydll.cpp
>> extern "C" __declspec(dllexport) LPTSTR GetString(int Index)
>> {
>> TCHAR res[2048];
>> ::LoadString(GetModuleHandle(NULL),Index, res,
>> sizeof(res)/sizeof(TCHAR));
>> LPTSTR Answer(res);
>> return((Answer));
>> }
>> // -- mydll.h
>> extern "C" __declspec(dllexport) LPTSTR GetString(int Index);
>>
>> however, on code --> ::LoadString(GetModuleHandle(NULL),Index, res,
>> sizeof(res)/sizeof(TCHAR));
>> res is always empty... i guess that issue is with getModuleHandle.
>> However, after reading some post on internet, it seems correct...so
>> where is the mistake ?
>
>
> The mistake is that GetModuleHandle(NULL) will return handle to the
> module used to create the running process. I.e., your .EXE file, not
> .DLL, which contains string table.
> Youy could eliminate `GetString' function at all. Just store somewhere
> in main program handle to the .DLL and call CString::LoadString with
> this handle passed as first parameter and string index as second.
>
> HTH
> Alex
From: --== Alain ==-- on 30 Sep 2006 15:57
for now i just send the result from LoadLibrary(DLL_Name);

--== Alain ==-- wrote:
> Yes i understand but it means to link statically my resource string
> table to my exe. i would like to avoid it.
>
> So my question is how can i get the Handle of the DLL ?
> thx,
>
> Al.
>
> Alex Blekhman wrote:
>> "--== Alain ==--" wrote:
>>>
>>> I'm still working on my DLL and is function to extract strings from
>>> the stringtable stored in the DLL.
>>>
>>> it looks like that :
>>> // -- mydll.cpp
>>> extern "C" __declspec(dllexport) LPTSTR GetString(int Index)
>>> {
>>> TCHAR res[2048];
>>> ::LoadString(GetModuleHandle(NULL),Index, res,
>>> sizeof(res)/sizeof(TCHAR));
>>> LPTSTR Answer(res);
>>> return((Answer));
>>> }
>>> // -- mydll.h
>>> extern "C" __declspec(dllexport) LPTSTR GetString(int Index);
>>>
>>> however, on code --> ::LoadString(GetModuleHandle(NULL),Index, res,
>>> sizeof(res)/sizeof(TCHAR));
>>> res is always empty... i guess that issue is with getModuleHandle.
>>> However, after reading some post on internet, it seems correct...so
>>> where is the mistake ?
>>
>>
>> The mistake is that GetModuleHandle(NULL) will return handle to the
>> module used to create the running process. I.e., your .EXE file, not
>> .DLL, which contains string table.
>> Youy could eliminate `GetString' function at all. Just store somewhere
>> in main program handle to the .DLL and call CString::LoadString with
>> this handle passed as first parameter and string index as second.
>>
>> HTH
>> Alex
From: Alex Blekhman on 30 Sep 2006 16:26
"--== Alain ==--" wrote:
> Yes i understand but it means to link statically my
> resource string table to my exe. i would like to avoid it.
>
> So my question is how can i get the Handle of the DLL ?


No, you still can have resource string table in DLL. Just
load the DLL and store its handle somewhere.

HINSTANCE hResInst = ::AfxLoadLibrary(dllName);

CString strMessage;
strMessage.LoadString(hResInst, IDS_MESSAGE);

// ...

::AfxFreeLibrary(hResInst);


HTH
Alex

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