Framework library function. This function creates a temporary XLOPER containing a "missing" argument. It is used to simulate a missing argument when calling Microsoft Excel.
Returns a missing LPXLOPER (xltypeMissing).
TempMissing(void);
This function has no arguments.
This example uses the TempMissing function to provide a missing argument to xlcWorkspace, which causes Microsoft Excel to switch to the next sheet.
\SAMPLES\EXAMPLE\EXAMPLE.C
short WINAPI TempMissingExample(void)
{
    XLOPER xBool;
    xBool.xltype = xltypeBool;
    xBool.val.bool = 0;
    Excel(xlcWorkspace, 0, 4, TempMissing(),
        TempMissing(),TempMissing(),
        (LPXLOPER)&xBool);
    return 1;
}