在没有CGo的情况下从Go调用COM对象方法

在没有CGo的情况下从Go调用COM对象方法

我问go-ole的家伙，就像@kostix建议的那样。

解决方法如下：

d3d9通常没有COM vtbl。例如，它没有IDispatch接口。因此，您不能对d3d9使用go-ole。但是您可以通过编写所有接口来实现。

package mainimport (    "fmt"    "log"    "syscall"    "unsafe")const (    D3D9_SDK_VERSION = 32)var (    libd3d9  = syscall.NewLazyDLL("d3d9.dll")    procDirect3DCreate9 = libd3d9.NewProc("Direct3DCreate9"))type IDirect3D struct {    lpVtbl *IDirect3DVtbl}type IDirect3DVtbl struct {    QueryInterface uintptr    AddRef         uintptr    Release        uintptr    RegisterSoftwareDevice      uintptr    GetAdapterCount  uintptr    GetAdapterIdentifier        uintptr    GetAdapterModeCount         uintptr    EnumAdapterModes uintptr    GetAdapterDisplayMode       uintptr    CheckDeviceType  uintptr    CheckDeviceFormatuintptr    CheckDeviceMultiSampleType  uintptr    CheckDepthStencilMatch      uintptr    CheckDeviceFormatConversion uintptr    GetDeviceCaps    uintptr    GetAdapterMonitoruintptr    CreateDevice     uintptr}func (v *IDirect3D) AddRef() int32 {    ret, _, _ := syscall.Syscall(        v.lpVtbl.AddRef,        1,        uintptr(unsafe.Pointer(v)),        0,        0)    return int32(ret)}func (v *IDirect3D) Release() int32 {    ret, _, _ := syscall.Syscall(        v.lpVtbl.Release,        1,        uintptr(unsafe.Pointer(v)),        0,        0)    return int32(ret)}func (v *IDirect3D) GetAdapterCount() uint32 {    ret, _, _ := syscall.Syscall(        v.lpVtbl.GetAdapterCount,        1,        uintptr(unsafe.Pointer(v)),        0,        0)    return uint32(ret)}func main() {    v, r, err := procDirect3DCreate9.Call(uintptr(D3D9_SDK_VERSION))    if r != 0 && err != nil {        log.Fatal(err)    }    d3d := *((**IDirect3D)(unsafe.Pointer(&v)))    d3d.AddRef()    defer d3d.Release()    fmt.Println(d3d.GetAdapterCount())}

（c）马特恩