DDENABLEIRQINFO structure (dxmini.h)
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) |