mirror of
https://github.com/Ne0nd0g/go-clr
synced 2026-06-08 11:58:38 +00:00
Ne0nd0g
83 lines
2.1 KiB
Go
83 lines
2.1 KiB
Go
// +build windows
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package clr
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import (
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"fmt"
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"syscall"
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"unsafe"
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)
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type IEnumUnknown struct {
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vtbl *IEnumUnknownVtbl
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}
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// IEnumUnknownVtbl Enumerates objects implementing the root COM interface, IUnknown.
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// Commonly implemented by a component containing multiple objects. For more information, see IEnumUnknown.
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// https://docs.microsoft.com/en-us/windows/win32/api/objidl/nn-objidl-ienumunknown
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type IEnumUnknownVtbl struct {
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QueryInterface uintptr
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AddRef uintptr
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Release uintptr
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// Next Retrieves the specified number of items in the enumeration sequence.
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Next uintptr
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// Skip Skips over the specified number of items in the enumeration sequence.
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Skip uintptr
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// Reset Resets the enumeration sequence to the beginning.
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Reset uintptr
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// Clone Creates a new enumerator that contains the same enumeration state as the current one.
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Clone uintptr
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}
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func (obj *IEnumUnknown) AddRef() uintptr {
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ret, _, _ := syscall.Syscall(
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obj.vtbl.AddRef,
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1,
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uintptr(unsafe.Pointer(obj)),
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0,
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0)
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return ret
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}
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func (obj *IEnumUnknown) Release() uintptr {
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ret, _, _ := syscall.Syscall(
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obj.vtbl.Release,
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1,
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uintptr(unsafe.Pointer(obj)),
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0,
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0)
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return ret
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}
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// Next retrieves the specified number of items in the enumeration sequence.
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// HRESULT Next(
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// ULONG celt,
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// IUnknown **rgelt,
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// ULONG *pceltFetched
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// );
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// https://docs.microsoft.com/en-us/windows/win32/api/objidl/nf-objidl-ienumunknown-next
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func (obj *IEnumUnknown) Next(celt uint32, pEnumRuntime unsafe.Pointer, pceltFetched *uint32) (hresult int, err error) {
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debugPrint("Entering into ienumunknown.Next()...")
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hr, _, err := syscall.Syscall6(
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obj.vtbl.Next,
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4,
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uintptr(unsafe.Pointer(obj)),
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uintptr(celt),
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uintptr(pEnumRuntime),
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uintptr(unsafe.Pointer(pceltFetched)),
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0,
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0,
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)
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if err != syscall.Errno(0) {
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err = fmt.Errorf("there was an error calling the IEnumUnknown::Next method:\r\n%s", err)
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return
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}
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if hr != S_OK && hr != S_FALSE {
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err = fmt.Errorf("the IEnumUnknown::Next method method returned a non-zero HRESULT: 0x%x", hr)
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return
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}
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err = nil
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hresult = int(hr)
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return
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}
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