// Code generated by 'go generate'; DO NOT EDIT.

package com

import (
	"syscall"
	"unsafe"

	"github.com/dblohm7/wingoes"
	"golang.org/x/sys/windows"
)

var _ unsafe.Pointer

// Do the interface allocations only once for common
// Errno values.
const (
	errnoERROR_IO_PENDING = 997
)

var (
	errERROR_IO_PENDING error = syscall.Errno(errnoERROR_IO_PENDING)
	errERROR_EINVAL     error = syscall.EINVAL
)

// errnoErr returns common boxed Errno values, to prevent
// allocations at runtime.
func errnoErr(e syscall.Errno) error {
	switch e {
	case 0:
		return errERROR_EINVAL
	case errnoERROR_IO_PENDING:
		return errERROR_IO_PENDING
	}
	// TODO: add more here, after collecting data on the common
	// error values see on Windows. (perhaps when running
	// all.bat?)
	return e
}

var (
	modole32    = windows.NewLazySystemDLL("ole32.dll")
	modoleaut32 = windows.NewLazySystemDLL("oleaut32.dll")
	modshlwapi  = windows.NewLazySystemDLL("shlwapi.dll")

	procCoCreateInstance     = modole32.NewProc("CoCreateInstance")
	procCoGetApartmentType   = modole32.NewProc("CoGetApartmentType")
	procCoIncrementMTAUsage  = modole32.NewProc("CoIncrementMTAUsage")
	procCoInitializeEx       = modole32.NewProc("CoInitializeEx")
	procCoInitializeSecurity = modole32.NewProc("CoInitializeSecurity")
	procSetOaNoCache         = modoleaut32.NewProc("SetOaNoCache")
	procSHCreateMemStream    = modshlwapi.NewProc("SHCreateMemStream")
)

func coCreateInstance(clsid *CLSID, unkOuter *IUnknownABI, clsctx coCLSCTX, iid *IID, ppv **IUnknownABI) (hr wingoes.HRESULT) {
	r0, _, _ := syscall.SyscallN(procCoCreateInstance.Addr(), uintptr(unsafe.Pointer(clsid)), uintptr(unsafe.Pointer(unkOuter)), uintptr(clsctx), uintptr(unsafe.Pointer(iid)), uintptr(unsafe.Pointer(ppv)))
	hr = wingoes.HRESULT(r0)
	return
}

func coGetApartmentType(aptType *coAPTTYPE, qual *coAPTTYPEQUALIFIER) (hr wingoes.HRESULT) {
	r0, _, _ := syscall.SyscallN(procCoGetApartmentType.Addr(), uintptr(unsafe.Pointer(aptType)), uintptr(unsafe.Pointer(qual)))
	hr = wingoes.HRESULT(r0)
	return
}

func coIncrementMTAUsage(cookie *coMTAUsageCookie) (hr wingoes.HRESULT) {
	r0, _, _ := syscall.SyscallN(procCoIncrementMTAUsage.Addr(), uintptr(unsafe.Pointer(cookie)))
	hr = wingoes.HRESULT(r0)
	return
}

func coInitializeEx(reserved uintptr, flags uint32) (hr wingoes.HRESULT) {
	r0, _, _ := syscall.SyscallN(procCoInitializeEx.Addr(), uintptr(reserved), uintptr(flags))
	hr = wingoes.HRESULT(r0)
	return
}

func coInitializeSecurity(sd *windows.SECURITY_DESCRIPTOR, authSvcLen int32, authSvc *soleAuthenticationService, reserved1 uintptr, authnLevel rpcAuthnLevel, impLevel rpcImpersonationLevel, authList *soleAuthenticationList, capabilities authCapabilities, reserved2 uintptr) (hr wingoes.HRESULT) {
	r0, _, _ := syscall.SyscallN(procCoInitializeSecurity.Addr(), uintptr(unsafe.Pointer(sd)), uintptr(authSvcLen), uintptr(unsafe.Pointer(authSvc)), uintptr(reserved1), uintptr(authnLevel), uintptr(impLevel), uintptr(unsafe.Pointer(authList)), uintptr(capabilities), uintptr(reserved2))
	hr = wingoes.HRESULT(r0)
	return
}

func setOaNoCache() {
	syscall.SyscallN(procSetOaNoCache.Addr())
	return
}

func shCreateMemStream(pInit *byte, cbInit uint32) (stream *IUnknownABI) {
	r0, _, _ := syscall.SyscallN(procSHCreateMemStream.Addr(), uintptr(unsafe.Pointer(pInit)), uintptr(cbInit))
	stream = (*IUnknownABI)(unsafe.Pointer(r0))
	return
}