DirectX SDK

DISEQUENCE_COMPARE

The DISEQUENCE_COMPARE macro compares two DirectInput sequence numbers, compensating for wrap around.

DISEQUENCE_COMPARE(dwSequence1, cmp, dwSequence2) \
                ((int)((dwSequence1) - (dwSequence2)) cmp 0)

Parameters

dwSequence1: First sequence number to compare.
cmp: One of the following comparison operators: ==, !=, <, >, <=, or >=.
dwSequence2: Second sequence number to compare.

Return Values

Returns a nonzero value if the result of the comparison specified by the cmp parameter is true, or 0 otherwise.

Remarks

The following example checks whether the dwSequence1 parameter value precedes the dwSequence2 parameter value chronologically:

BOOL Sooner = (DISEQUENCE_COMPARE(dwSequence1, <, dwSequence2));

Requirements

  Windows NT/2000: Requires Windows 2000.
  Windows 95/98: Requires Windows 95 or later. Available as a redistributable for Windows 95.
  Header: Declared in dinput.h.