LPDDHALSURFCB_UPDATEOVERLAY (Windows Embedded CE 6.0)

1/6/2010

This callback function repositions or modifies the visual attributes of an overlay surface.

Syntax

DWORD (* LPDDHALSURFCB_UPDATEOVERLAY)(
  LPDDHAL_UPDATEOVERLAYDATA lpuod
);

Parameters

• lpuod
  [in, out] Pointer to a DDHAL_UPDATEOVERLAYDATA structure that the driver uses to update the overlay surface.

Return Value

Returns one of the following values:

• DDHAL_DRIVER_HANDLED
• DDHAL_DRIVER_NOTHANDLED

Remarks

DirectDraw passes color-key information to the UpdateOverlay callback function only if DDCAPS_OVERLAYCANTCLIP in DDCAPS.dwCaps is TRUE.

Requirements

See Also

Reference

DDHAL_UPDATEOVERLAYDATA

Concepts

DirectDrawSurface Callback Functions
DDHAL Callback Return Values
DDHAL Callback Return Values

Other Resources

DDCAPS