C / C++ / MFC

4288 wrote:

but if I insert the OnPaint handler with Visual Studio, the control won't even show

Usef Marzbani wrote:

For example I don't know what "MaxBufferSize" means and so on...

    VARIANT DataValues[4];
    V_R4( &DataValues[0]) = 0.0;

led mike wrote:

VARIANT DataValues[4];
V_R4( &DataValues[0]) = 0.0;

Eurosid wrote:

The examples I'm looking show that you verify it's OK by doing this sort of thing:

#define V_UNION(X, Y)   ((X)->Y)
#define V_VT(X)         ((X)->vt)
#define V_R4(X)          V_UNION(X, fltVal)

VARIANT var;
VariantInit (&var);
V_VT(&var) = VT_R4;
V_R4(&var) = 0.0;

V_UNION(&var,ftlVal) = 0.0;

(&var)->ftlVal = 0.0;

if (1)
{
   //  pretty guaranteed to get here
} else {
   // not likely...
}

if (a=0)
{
   //  pretty unlikely to get here
} else {
   // 
}

V_R4(&blah) = a number

Iain Clarke wrote:

Here endeth the lesson.

Iain.

CString CMyClass::GetDefaultConnect()
{
return CString(_T("Connection String"));
}

CString strConnectionString= CString((_T("Connection String")));
CString CMyClass::GetDefaultConnect()
{
 return strConnectionString;
}