delphi – 检查W10上的Windows版本

>您使用的XE8 RTL之前的Windows 10等都不了解Windows 10.
>您的可执行文件不表现为支持Windows 10,因此,TOSVersion依赖的GetVersionEx将会涉及版本.

这样XE8更新1就会发生,我相信更改版本检测使用NetWkstaGetInfo不受此版本的限制.虽然调用NetWkstaGetInfo确实泄漏内存,但这可能不重要,因为它只被调用一次.

与此相关的一些链接：

> Operating system version changes in Windows 8.1 and Windows Server 2012 R2
> Why Windows 8.1 Sometimes Tells You It Is Windows 8.0
> GetVersionEx
> Targeting your application for Windows
>还有很多更多….

如果您绝对必须向用户报告版本,那么您有各种选项：

>将supportsOS选项添加到您的清单,并包含Windows 10的GUID.这样可以让GetVersionEx从撒谎.然后使用TOSVersion的修改版本或其他方法来获取版本.
>使用WMI查询.
>调用NetServerGetInfo.
>调用NetWkstaGetInfo.
>调用RtlGetVersion.

这个问题的更多细节：How to detect true Windows version?虽然注意到接受的答案是过时的.

作为WMI方法的一个例子,您可以使用以下代码：

function OperatingSystemDisplayName: string;

  function GetWMIObject(const objectName: string): IDispatch;
  var
    chEaten: Integer;
    BindCtx: IBindCtx;
    Moniker: IMoniker;
  begin
    OleCheck(CreateBindCtx(0,bindCtx));
    OleCheck(MkParseDisplayName(BindCtx,PChar(objectName),chEaten,Moniker));
    OleCheck(Moniker.BindToObject(BindCtx,nil,IDispatch,Result));
  end;

  function VarToString(const Value: OleVariant): string;
  begin
    if VarIsStr(Value) then begin
      Result := Trim(Value);
    end else begin
      Result := '';
    end;
  end;

  function FullVersionString(const Item: OleVariant): string;
  var
    Caption,ServicePack,Version,Architecture: string;
  begin
    Caption := VarToString(Item.Caption);
    ServicePack := VarToString(Item.CSDVersion);
    Version := VarToString(Item.Version);
    Architecture := ArchitectureDisplayName(SystemArchitecture);
    Result := Caption;
    if ServicePack <> '' then begin
      Result := Result + ' ' + ServicePack;
    end;
    Result := Result + ',version ' + Version + ',' + Architecture;
  end;

var
  objWMIService: OleVariant;
  colItems: OleVariant;
  Item: OleVariant;
  oEnum: IEnumvariant;
  iValue: LongWord;

begin
  Try
    objWMIService := GetWMIObject('winmgmts:localhostrootcimv2');
    colItems := objWMIService.ExecQuery('SELECT Caption,CSDVersion,Version FROM Win32_OperatingSystem','WQL',0);
    oEnum := IUnknown(colItems._NewEnum) as IEnumVariant;
    if oEnum.Next(1,Item,iValue)=0 then begin
      Result := FullVersionString(Item);
      exit;
    end;
  Except
    // yes,I know this is nasty,but come what may I want to use the fallback code below should the WMI code fail
  End;

  (* Fallback,relies on the deprecated function GetVersionEx,reports erroneous values
     when manifest does not contain supportedOS matching the executing system *)
  Result := TOSVersion.ToString;
end;