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PDD_SURFCB_UNLOCK callback function (ddrawint.h)

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The DdUnLock callback function releases the lock held on the specified surface.

Syntax

PDD_SURFCB_UNLOCK PddSurfcbUnlock;

DWORD PddSurfcbUnlock(
  PDD_UNLOCKDATA unnamedParam1
)
{...}

Parameters

unnamedParam1

Points to a DD_UNLOCKDATA structure that contains the information required to perform the lock release.

Return value

DdUnLock returns one of the following callback codes:

Remarks

The driver does not need to verify that the memory was previously locked down by DdLock, because DirectDraw does parameter validation before calling this routine.

DdUnLock can be called with a disabled PDEV. A PDEV is disabled or enabled by calling the display driver's DrvAssertMode function. See Managing PDEVs for more information.

Requirements

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

See also

DD_UNLOCKDATA

DdLock