windows - Delphi 2010中的CoInternet IsFeatureEnabled

Question

我试图在单击WebBrowser控件中的链接时停用烦人的声音，而无需更改用户注册表。我发现可以通过CoInternetIsFeatureEnabled来完成此操作的文档，也解释了here。但是我不知道如何在Delphi 2010上实现它，因为在项目中包含URLMon单元并且在那里没有太多文档后，出现“未声明的标识符”错误。

有任何想法吗？

Answer 1

D2010的UrlMon.pas副本中不包括CoInternetIsFeatureEnabled()和CoInternetSetFeatureEnabled()。您将必须手动声明它们，例如:

const
  GET_FEATURE_FROM_THREAD = $00000001;
  GET_FEATURE_FROM_PROCESS = $00000002;
  GET_FEATURE_FROM_REGISTRY = $00000004;
  GET_FEATURE_FROM_THREAD_LOCALMACHINE = $00000008;
  GET_FEATURE_FROM_THREAD_INTRANET = $00000010;
  GET_FEATURE_FROM_THREAD_TRUSTED = $00000020;
  GET_FEATURE_FROM_THREAD_INTERNET = $00000040;
  GET_FEATURE_FROM_THREAD_RESTRICTED = $00000080;

  SET_FEATURE_ON_THREAD = $00000001;
  SET_FEATURE_ON_PROCESS = $00000002;
  SET_FEATURE_IN_REGISTRY = $00000004;
  SET_FEATURE_ON_THREAD_LOCALMACHINE = $00000008;
  SET_FEATURE_ON_THREAD_INTRANET = $00000010;
  SET_FEATURE_ON_THREAD_TRUSTED = $00000020;
  SET_FEATURE_ON_THREAD_INTERNET = $00000040;
  SET_FEATURE_ON_THREAD_RESTRICTED = $00000080; 

type
  INTERNETFEATURELIST = (
    FEATURE_OBJECT_CACHING,
    FEATURE_ZONE_ELEVATION,
    FEATURE_MIME_HANDLING,
    FEATURE_MIME_SNIFFING,
    FEATURE_WINDOW_RESTRICTIONS,
    FEATURE_WEBOC_POPUPMANAGEMENT,
    FEATURE_BEHAVIORS,
    FEATURE_DISABLE_MK_PROTOCOL,
    FEATURE_LOCALMACHINE_LOCKDOWN,
    FEATURE_SECURITYBAND,
    FEATURE_RESTRICT_ACTIVEXINSTALL,
    FEATURE_VALIDATE_NAVIGATE_URL,
    FEATURE_RESTRICT_FILEDOWNLOAD,
    FEATURE_ADDON_MANAGEMENT,
    FEATURE_PROTOCOL_LOCKDOWN,
    FEATURE_HTTP_USERNAME_PASSWORD_DISABLE,
    FEATURE_SAFE_BINDTOOBJECT,
    FEATURE_UNC_SAVEDFILECHECK,
    FEATURE_GET_URL_DOM_FILEPATH_UNENCODED,
    FEATURE_TABBED_BROWSING,
    FEATURE_SSLUX,
    FEATURE_DISABLE_NAVIGATION_SOUNDS,
    FEATURE_DISABLE_LEGACY_COMPRESSION,
    FEATURE_FORCE_ADDR_AND_STATUS,
    FEATURE_XMLHTTP,
    FEATURE_DISABLE_TELNET_PROTOCOL,
    FEATURE_FEEDS,
    FEATURE_BLOCK_INPUT_PROMPTS,
    FEATURE_ENTRY_COUNT
  );

function CoInternetIsFeatureEnabled(FeatureEntry: INTERNETFEATURELIST; dwFlags: DWORD): HRESULT; stdcall; external 'urlmon.dll'
function CoInternetSetFeatureEnabled(FeatureEntry: INTERNETFEATURELIST; dwFlags: DWORD; fEnable: BOOL): HRESULT; stdcall; external 'urlmon.dll'

begin
  if CoInternetIsFeatureEnabled(FEATURE_DISABLE_NAVIGATION_SOUNDS, GET_FEATURE_FROM_PROCESS) = S_FALSE then
    CoInternetSetFeatureEnabled(FEATURE_DISABLE_NAVIGATION_SOUNDS, SET_FEATURE_ON_PROCESS, True); 
end;