Nvidia 5500 User Manual

NVIDIA Corporation

Quadro FX 4500/5500 SDI User’s Guide– Version 2.0

HAPTER

API Control

NvGvoDesktopOpen()

//---------------------------------------------------------------------
// Function: NvGvoDesktopOpen
// Description: Open graphics adapter for Graphics to Video operations
//      using the Desktop transparent mode interface. Read
//      operations are permitted in this mode by multiple clients,
//      but write operations are application exclusive.
// Parameters: nAdapterNumber - Graphics adapter number
//      nReserved   - Reserved (must be set to zero)
//      dwClass     - Class interface (NVGVOCLASS_* value)
//      dwAccessRights - Access rights (NVGVO_O_* mask)
//      phGvoHandle   - Pointer to receive handle
// Returns:   NV_OK       - Success
//      NV_ACCESSDENIED - Access denied for requested access
//---------------------------------------------------------------------
NVRESULT NVAPIENTRY NvGvoDesktopOpen(UINT         nAdapterNumber IN,
                UINT         nReserved    IN,
                DWORD        dwClass    IN,
                DWORD        dwAccessRights IN,
                NVGVOHANDLE*     phGvoHandle    OUT);

NvGvoDesktopClose()

//---------------------------------------------------------------------
// Function: NvGvoDesktopClose
// Description: Closes graphics adapter for Graphics to Video operations
//      using the Desktop transparent mode interface.
// Parameters: hGvoHandle - Handle to graphics adapter
//      bGvoRelease - TRUE to release device when handle closes
//            FALSE to remain in desktop mode when handle
//                closes (other clients can open using
//                NvGvoDesktopOpen and release using
//                NvGvoDesktopClose)
// Returns:   NV_OK     - Success
//---------------------------------------------------------------------
NVRESULT NVAPIENTRY NvGvoDesktopClose(NVGVOHANDLE hGvoHandle IN,
                BOOL    bRelease IN);