The DIPERIODIC structure contains type-specific information for effects that are marked as DIEFT_PERIODIC.
The structure describes a periodic effect.
A pointer to a single DIPERIODIC structure for an effect is passed in the lpvTypeSpecificParams member of the DIEFFECT structure.
typedef struct {
DWORD dwMagnitude;
LONG lOffset;
DWORD dwPhase;
DWORD dwPeriod;
} DIPERIODIC, *LPDIPERIODIC;
typedef const DIPERIODIC *LPCDIPERIODIC;
A device driver may not provide support for all values in the dwPhase member. In this case the value will be rounded off to the nearest supported value.
Windows NT: Use version 5.0 or later.
Windows: Use Windows 95 or later. Available as a redistributable for Windows 95.
Windows CE: Unsupported.
Header: Declared in dinput.h.