PDD_SURFCB_GETBLTSTATUS callback function (ddrawint.h)

The DdGetBltStatus callback function queries the blit status of the specified surface.

Syntax

PDD_SURFCB_GETBLTSTATUS PddSurfcbGetbltstatus;

DWORD PddSurfcbGetbltstatus(
  PDD_GETBLTSTATUSDATA unnamedParam1
)
{...}

Parameters

unnamedParam1

Points to a DD_GETBLTSTATUSDATA structure that contains the information required to perform the blit status query.

Return value

DdGetBltStatus returns one of the following callback codes:

Remarks

The blit status that the driver returns is based on the dwFlags member of the structure that lpGetBltStatus points to, as follows:

  • If the flag is DDGBS_CANBLT, the driver should determine whether the surface is currently involved in a flip. If a flip is not in progress and if the hardware is otherwise capable of currently accepting a blit request, the driver should return DD_OK in the ddRVal member of the structure that lpGetBltStatus points to. If a flip is in progress or if the hardware cannot currently accept another blit request, the driver should set the ddRVal member to DDERR_WASSTILLDRAWING.
  • If the flag is DDGBS_ISBLTDONE, the driver should set ddRVal to DDERR_WASSTILLDRAWING if a blit is currently in progress; otherwise it should return DD_OK.

Requirements

   
Target Platform Desktop
Header ddrawint.h (include Winddi.h)

See also

DD_GETBLTSTATUSDATA

DdBlt