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DDENABLEIRQINFO structure (dxmini.h)

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The DDENABLEIRQINFO structure contains the information required to enable interrupts.

Syntax

typedef struct _DDENABLEIRQINFO {
  DWORD           dwIRQSources;
  DWORD           dwLine;
  PDX_IRQCALLBACK IRQCallback;
  PDX_IRQDATA     lpIRQData;
} DDENABLEIRQINFO, *PDDENABLEIRQINFO;

Members

dwIRQSources

Indicates the interrupts that should be enabled. This member can be one or more of the following values:

Flag Meaning
DDIRQ_DISPLAY_VSYNC The device can generate IRQs based on the display V-sync.
DDIRQ_VPORT0_LINE The device can generate IRQs based on a programmable line for hardware video port number 0.
DDIRQ_VPORT0_VSYNC The device can generate V-sync IRQs for hardware video port number 0.
DDIRQ_VPORT1_LINE The device can generate IRQs based on a programmable line for hardware video port number 1.
DDIRQ_VPORT1_VSYNC The device can generate V-sync IRQs for hardware video port number 1.
DDIRQ_VPORT2_LINE The device can generate IRQs based on a programmable line for hardware video port number 2.
DDIRQ_VPORT2_VSYNC The device can generate V-sync IRQs for hardware video port number 2.
DDIRQ_VPORT3_LINE The device can generate IRQs based on a programmable line for hardware video port number 3.
DDIRQ_VPORT3_VSYNC The device can generate V-sync IRQs for hardware video port number 3.
DDIRQ_VPORT4_LINE The device can generate IRQs based on a programmable line for hardware video port number 4.
DDIRQ_VPORT4_VSYNC The device can generate V-sync IRQs for hardware video port number 4.
DDIRQ_VPORT5_LINE The device can generate IRQs based on a programmable line for hardware video port number 5.
DDIRQ_VPORT5_VSYNC The device can generate V-sync IRQs for hardware video port number 5.
DDIRQ_VPORT6_LINE The device can generate IRQs based on a programmable line for hardware video port number 6.
DDIRQ_VPORT6_VSYNC The device can generate V-sync IRQs for hardware video port number 6.
DDIRQ_VPORT7_LINE The device can generate IRQs based on a programmable line for hardware video port number 7.
DDIRQ_VPORT7_VSYNC The device can generate V-sync IRQs for hardware video port number 7.
DDIRQ_VPORT8_LINE The device can generate IRQs based on a programmable line for hardware video port number 8.
DDIRQ_VPORT8_VSYNC The device can generate V-sync IRQs for hardware video port number 8.
DDIRQ_VPORT9_LINE The device can generate IRQs based on a programmable line for hardware video port number 9.
DDIRQ_VPORT9_VSYNC The device can generate V-sync IRQs for hardware video port number 9.

dwLine

Indicates which line should generate the IRQ. If the hardware does not have the ability to generate an IRQ based on a programmable line, the value in this member is meaningless.

IRQCallback

Points to an IRQCallback that the video miniport driver calls when the miniport driver is managing IRQs, and an IRQ occurs.

lpIRQData

Points to the data to be sent to IRQCallback when IRQCallback is called.

Remarks

The dwIRQSources member of this structure does not use the DDIRQ_BUSMASTER flag. However, the DDIRQ_BUSMASTER flag can be set in the dwIrqFlags member of the DX_IRQDATA structure. The driver passes this DX_IRQDATA to the IRQCallback function when an IRQ occurs.

Requirements

Requirement Value
Header dxmini.h (include Dxmini.h)

See also

DX_IRQDATA

DxEnableIRQ

IRQCallback