(ref EVRInitError peError, EVRApplicationType eApplicationType)

(ref EVRInitError peError, EVRApplicationType eApplicationType)

(ref EVRInitError peError, EVRApplicationType eApplicationType,[In, MarshalAs(UnmanagedType.LPStr)] string pSt

(ref EVRInitError peError, EVRApplicationType eApplicationType, string pchStartupInfo)

(ulong ulOverlayHandle)

(string pchAppKey)

()

()

()

(uint nDriver)

()

()

()

(ulong ulOverlayHandle)

()

([In, MarshalAs(UnmanagedType.LPStr)] string pchInterfaceVersion)

(string pchInterfaceVersion)

()

()

()

(ulong ulOverlayHandle)

()

()

()

()

(uint unDeviceIndex)

()

(ulong ulOverlayHandle)

(string pchAppKey)

(string pchMimeType,string pchArgs)

(string pchAppKey)

(string pchBinaryPath,string pchArguments,string pchWorkingDirectory)

(string pchTemplateAppKey,string pchNewAppKey,AppOverrideKeys_t [] pKeys)

(int textureId,IntPtr pDstTexture)

(string pchRenderModelName,ref IntPtr ppRenderModel)

(string pchResourceName,string pchBuffer,uint unBufferLen)

(int textureId,IntPtr pD3D11Device,ref IntPtr ppD3D11Texture2D)

(int textureId,ref IntPtr ppTexture)

(IntPtr glSharedTextureHandle)

(string pchPath,EIOBufferMode mode,uint unElementSize,uint unElements,ref ulong pulBuffer)

(string pchAppKey,ulong ulActionSetHandle,ulong ulDeviceHandle,bool bShowOnDesktop)

(string pchAppKey)

(uint unDeviceIndex)

(ETrackingUniverseOrigin eOrigin,ref VREvent_t pEvent,uint uncbVREvent,ref TrackedDevicePose_t pTrackedDeviceP

(ulong ulOverlayHandle,ref VREvent_t pEvent,uint uncbVREvent)

(ulong ulOverlayHandle,ref VREvent_t pvrEvent)