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PDX_GETIRQINFO callback function (dxmini.h)

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The DxGetIRQInfo callback function indicates that the driver manages the interrupt request.

Syntax

PDX_GETIRQINFO PdxGetirqinfo;

DWORD PdxGetirqinfo(
  PVOID unnamedParam1,
  PVOID unnamedParam2,
  PDDGETIRQINFO unnamedParam3
)
{...}

Parameters

unnamedParam1

Points to the miniport driver's device extension.

unnamedParam2

Reserved for system use.

unnamedParam3

Points to a DDGETIRQINFO structure that contains the interrupt request information.

Return value

DxGetIrqInfo returns DX_OK if it succeeds; otherwise, it returns one of the following error values:

Remarks

Because the miniport driver must always manage the IRQ, this function must always set the dwFlags member of the DDGETIRQINFO structure at GetIrqInfo to IRQINFO_HANDLED. If any other flag is set, this function will fail.

Requirements

Requirement Value
Target Platform Desktop
Header dxmini.h (include Dxmini.h)

See also

DDGETIRQINFO