C / C++ / MFC

yu-jian wrote:

In the kernel Mode, all the program can run, it runs on the ring0 and can visit all the I/O port.

yu-jian wrote:

In the user Mode. only a part of program can be run. It runs on the ring3. Some operations of the program will be fobidden.

msr_codeproject wrote:

Can't we create Kernel Mode drivers with latest operating systems?

msr_codeproject wrote:

And what is the risk involved in using Kernel Mode Drivers?

Jalapeno Bob wrote:

Allowing an array size of zero is a good thing.

template <typename T>
class SimpleArray
{
  T* m_pData;
  int m_iLength;

public:
  SimpleArray() : m_pData(NULL), m_iLength(0) {};
...
};

They sought it with thimbles, they sought it with care;
They pursued it with forks and hope;
They threatened its life with a railway-share;
They charmed it with smiles and soap.

<code>typedef struct _VARIABLE_SIZED_STRUCT {
	//Other members
	BYTE data[0];
} VARIABLE_SIZED_STRUCT, *PVARIABLE_SIZED_STRUCT;

PVARIABLE_SIZED_STRUCT pDynamic = (PVARIABLE_SIZED_STRUCT)malloc(FIELD_OFFSET(VARIABLE_SIZED_STRUCT,data[iSize]));

#define _STATIC_ASSERT(expr) typedef char __static_assert_t[ (expr) ]

struct foo
{
    int number_of_elements_;
    int elements_[];
};

mints555 wrote:

And, if the file is still being used by explorer for writing, the program gives an error.

CFile sour;
CString source=_T("Path to file");

while (!sour.Open(source,CFile::modeRead | CFile::shareDenyNone,NULL))
{
    Sleep(1000);		
}
	
sour.Close();