VideoPortGetAgpServices function (videoagp.h)
The VideoPortGetAgpServices function is obsolete and is supported only for backward compatibility with existing drivers. In its place, driver writers should use VideoPortQueryServices.
VideoPortGetAgpServices returns a list of video port driver-implemented AGP service functions.
Syntax
VIDEOAGP_DEPRECATED BOOLEAN VideoPortGetAgpServices(
[in] IN PVOID HwDeviceExtension,
[in] IN PVIDEO_PORT_AGP_SERVICES AgpServices
);
Parameters
[in] HwDeviceExtension
Pointer to the miniport driver's device extension.
[in] AgpServices
Pointer to an uninitialized, miniport driver-allocated VIDEO_PORT_AGP_SERVICES structure.
Return value
VideoPortGetAgpServices returns TRUE after it successfully initializes the VIDEO_PORT_AGP_SERVICES structure to which AgpServices points; otherwise it returns FALSE.
Remarks
PnP video miniport drivers that can use AGP should call VideoPortGetAgpServices.
The video port driver initializes the VIDEO_PORT_AGP_SERVICES structure as follows:
- All function pointers are initialized to point to the corresponding video port driver-implemented AGP service functions.
- The AllocationLimit field is initialized to the maximum amount of AGP memory that a miniport driver is allowed to commit, in bytes.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Available in Windows 2000 and later versions of the Windows operating systems. |
| Target Platform | Desktop |
| Header | videoagp.h (include Video.h) |
| Library | Videoprt.lib |
| DLL | Videoprt.sys |
| IRQL | PASSIVE_LEVEL |
See also
AgpReleasePhysical