MultiByte character problem

Similar Threads:

1.Problem with "multibyte or wide character"

2.0xC000005 - Access Violation when trying to save some MultiByte characters to a file by using fwrite

Feel like a dog, I tried everything but couldn't get rid of that error
I refer in subject... :-(

This part of my code should save the content of editbox to a file
(characters need to be saved in multibyte).

void SaveInMultiByte(void)
{
	FILE *stream;
	LPTSTR lpStringInEdit;
	long int StringLength;
	char* CharForSave;
	int numwritten;
	int a;

	StringLength = GetWindowTextLength(hWndMainEditBox)+1;
	lpStringInEdit = (LPTSTR)HeapAlloc(GetProcessHeap(), 0, StringLength
+10);
	MultibyteStringForSave = (char*)malloc(StringLength+10);
	GetWindowText(hWndMainEditBox, lpStringInEdit, StringLength+10);

	wcstombs(MultibyteStringForSave, lpStringInEdit, StringLength);

	if((stream = _wfopen(szFileName, L"wb")) == NULL){
		MessageBox(g_hWnd, TEXT("File couldn't be saved."), TEXT("File
error"), MB_ICONERROR);
		fclose(stream);
		return;
	}

	numwritten = fwrite(MultibyteStringForSave, sizeof(char),
StringLength - 1, stream);      // here I get that access violation

	fclose(stream);

	HeapFree(GetProcessHeap(), 0, lpStringInEdit);
	free(MultibyteStringForSave);

	return;
}

What did I make wrong there?

The strange thing is that I've been getting that error also with
calling the funcs malloc and HeapAlloc approximately 6 hours ago.
After when I get rid of that error by calling funcs malloc and
HeapAlloc it just starts appearing by calling the func fwrite and I
couldn't resolve ths problem out to this moment:-(

I will appreciate any tips.

Thanks in advance.

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I am trying to write a REG_SZ registry value in my OALIoCtlHalInitRegistry() 
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This was what I thought I'd do:

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However this gives me unresolved linker errors, I don't want to include the 
coredll.dll lib in my OAL, I dont think you can do that can you?

So I guess I need a quick and dirty routine to convert an asciiz string to 
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