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delphi强制TWebBrowser控件使用指定版本显示网页(转贴)

发布于: 2019/6/22 9:55:12   |  发布在: Delphi文章   |  点击:

好久没有用Delphi编程,最近有一个项目需要用到TWebBrowser控件,Delphi7中该控件IE内核是7.0的,但目标网页不支持IE8及以下版本。网上搜索到了解决方案,作个备忘吧,转发该贴。原贴内容如下:(需引用单元文件Registry)

function TFrmmain.WriteAppNameToReg:Boolean;
 var
 reg:TRegistry;
 sPath,sAppName:String;
 Sver:string;
 lenver:Integer;
begin
      Result:=True;
      reg:=TRegistry.Create;
    try
        reg.RootKey:=HKEY_LOCAL_MACHINE;
        sPath:='SOFTWARE\Microsoft\Internet Explorer\MAIN\FeatureControl\FEATURE_BROWSER_EMULATION';
        if isWin64 then
        sPath:='SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\MAIN\FeatureControl\FEATURE_BROWSER_EMULATION';
        if reg.OpenKey(sPath,True) then
        begin
          sAppName:=ExtractFileName(Application.ExeName);
         Sver:=GetIEVersionStr;
         lenver:=StrToInt(leftstr(Sver, Pos('.',Sver)-1));
         // if not reg.ValueExists(sAppName)then
          if lenver<=7 then
            reg.WriteInteger(sAppName,7000)
          else
          if lenver=8 then
          begin
            reg.WriteInteger(sAppName,8000)
          end
          else
          if lenver=9 then
          begin
            reg.WriteInteger(sAppName,9000)
          end
           else
          if lenver=10 then
          begin
            reg.WriteInteger(sAppName,10000)
          end
           else
          if lenver=11 then
          begin
            reg.WriteInteger(sAppName,11001)
          end;  
        end;
        reg.CloseKey;         
    finally
       FreeAndNil(reg);
    end;
function TFrmmain.GetIEVersionStr: string;
var
 Reg: TRegistry; // registry access object
begin
 Result := '';
 Reg := TRegistry.Create;
 try
    Reg.RootKey := Windows.HKEY_LOCAL_MACHINE;
 if Reg.OpenKeyReadOnly('Software\Microsoft\Internet Explorer'then
 begin
  //这儿新版本IE的取值位置不同所以要判断 
   if Reg.ValueExists('svcVersion'then
    Result := Reg.ReadString('svcVersion'
   else
   if Reg.ValueExists('Version'then
    Result := Reg.ReadString('Version');
 end;
 finally
   Reg.Free;
 end;
end;
function TFrmmain.IsWin64:Boolean;<br>//这个是别人写好的,不记得原出处了,见凉
var
 Kernel32Handle:THandle;
 IsWow64Process: function(Handle:Windows.THandle;var Res:Windows.BOOL):Windows.BOOL;stdcall;
 GetNativeSystemInfo:procedure(var lpSystemInfo:TSystemInfo);stdcall;
 isWoW64: Bool;
 SystemInfo: TSystemInfo;
const
 PROCESSOR_ARCHITECTURE_AMD64=9;
 PROCESSOR_ARCHITECTURE_IA64=6;
begin
  Kernel32Handle:=GetModuleHandle('KERNEL32.DLL');
  if Kernel32Handle=0 then
     Kernel32Handle:=LoadLibrary('KERNEL32.DLL');
  if Kernel32Handle<>0 then
  begin
    IsWOW64Process:=GetProcAddress(Kernel32Handle,'IsWow64Process');
    GetNativeSystemInfo:=GetProcAddress(Kernel32Handle,'GetNativeSystemInfo');
    if Assigned(IsWow64Process) then
    begin
      IsWow64Process(GetCurrentProcess,isWoW64);
      Result:=isWoW64 and Assigned(GetNativeSystemInfo);
      if Result then
      begin
         GetNativeSystemInfo(SystemInfo);
         Result:=(SystemInfo.wProcessorArchitecture=PROCESSOR_ARCHITECTURE_AMD64)or
         (SystemInfo.wProcessorArchitecture=PROCESSOR_ARCHITECTURE_IA64);
      end;
    end
    else
    Result:=False;
  end
  else
  Result:=False;
end;

参考了这儿

http://www.cnblogs.com/zhwl/p/3147832.html

 

参考

{

说明
10001 (0x2711)
Internet Explorer 10。网页以IE 10的标准模式展现,页面!DOCTYPE无效
10000 (0x02710)
Internet Explorer 10。在IE 10标准模式中按照网页上!DOCTYPE指令来显示网页。Internet Explorer 10 默认值。
9999 (0x270F)
Windows Internet Explorer 9. 强制IE9显示,忽略!DOCTYPE指令
9000 (0x2328)
Internet Explorer 9. Internet Explorer 9默认值,在IE9标准模式中按照网页上!DOCTYPE指令来显示网页。
8888 (0x22B8)
Internet Explorer 8,强制IE8标准模式显示,忽略!DOCTYPE指令
8000 (0x1F40)
Internet Explorer 8默认设置,在IE8标准模式中按照网页上!DOCTYPE指令展示网页
7000 (0x1B58)
使用WebBrowser Control控件的应用程序所使用的默认值,在IE7标准模式中按照网页上!DOCTYPE指令来展示网页。
}


{
https://msdn.microsoft.com/en-us/library/ee330730(v=vs.85).aspx

Internet Feature Controls (B..C)

 

Updated: July 2012

This article describes feature controls with names that begin with the letters B or C. For links to other feature controls, see Feature Controls.

 

Binary Behavior Security

Microsoft Internet Explorer 6 for Windows XP Service Pack 2 (SP2). The FEATURE_BEHAVIORS allows Binary Behaviors to run more securely. When the feature is enabled, it can be set differently for each security zone by using the URL action flag URLACTION_BEHAVIOR_RUN. For more information, see About URL Security Zones.

By default, this feature is enabled for Windows Internet Explorer and for applications hosting the WebBrowser Control. To disable this feature by using the registry, add the name of your executable file to the following setting.

 

HKEY_LOCAL_MACHINE (or HKEY_CURRENT_USER)    SOFTWARE       Microsoft          Internet Explorer             Main                FeatureControl                   FEATURE_BEHAVIORS                      contoso.exe = (DWORD) 00000000

The feature is enabled when the value is set to (DWORD) 00000001 and disabled when the value is (DWORD) 00000000.

Browser Emulation

Windows Internet Explorer 8 and later. The FEATURE_BROWSER_EMULATION feature defines the default emulation mode for Internet Explorer and supports the following values.

 

Value Description
11001 (0x2AF9 Internet Explorer 11. Webpages are displayed in IE11 edge mode, regardless of the declared !DOCTYPE directive. Failing to declare a !DOCTYPE directive causes the page to load in Quirks.
11000 (0x2AF8) IE11. Webpages containing standards-based !DOCTYPE directives are displayed in IE11 edge mode. Default value for IE11.
10001 (0x2711) Internet Explorer 10. Webpages are displayed in IE10 Standards mode, regardless of the !DOCTYPE directive.
10000 (0x02710) Internet Explorer 10. Webpages containing standards-based !DOCTYPE directives are displayed in IE10 Standards mode. Default value for Internet Explorer 10.
9999 (0x270F) Windows Internet Explorer 9. Webpages are displayed in IE9 Standards mode, regardless of the declared !DOCTYPE directive. Failing to declare a !DOCTYPE directive causes the page to load in Quirks.
9000 (0x2328) Internet Explorer 9. Webpages containing standards-based !DOCTYPE directives are displayed in IE9 mode. Default value for Internet Explorer 9.
Important  In Internet Explorer 10, Webpages containing standards-based !DOCTYPE directives are displayed in IE10 Standards mode.
 
8888 (0x22B8) Webpages are displayed in IE8 Standards mode, regardless of the declared !DOCTYPE directive. Failing to declare a !DOCTYPE directive causes the page to load in Quirks.
8000 (0x1F40) Webpages containing standards-based !DOCTYPE directives are displayed in IE8 mode. Default value for Internet Explorer 8
Important  In Internet Explorer 10, Webpages containing standards-based !DOCTYPE directives are displayed in IE10 Standards mode.
 
7000 (0x1B58) Webpages containing standards-based !DOCTYPE directives are displayed in IE7 Standards mode. Default value for applications hosting the WebBrowser Control.

 

For more information, see Defining Document Compatibility.

To control the value of this feature by using the registry, add the name of your executable file to the following setting and set the value to match the desired setting.

 

HKEY_LOCAL_MACHINE (or HKEY_CURRENT_USER)    SOFTWARE       Microsoft          Internet Explorer             Main                FeatureControl                   FEATURE_BROWSER_EMULATION                      contoso.exe = (DWORD) 00009000

Child Window Clipping

Internet Explorer 9. Internet Explorer 9 optimized the performance of window-drawing routines that involve clipping regions associated with child windows. This helped improve the performance of certain window drawing operations. However, certain applications hosting the WebBrowser Control rely on the previous behavior and do not function correctly when these optimizations are enabled. The FEATURE_ENABLE_CLIPCHILDREN_OPTIMIZATION feature can disable these optimizations.

By default, this feature is enabled for Internet Explorer and for applications hosting the WebBrowser Control. To disable this feature by using the registry, add the name of your executable file to the following setting.

 

HKEY_LOCAL_MACHINE (or HKEY_CURRENT_USER)    SOFTWARE       Microsoft          Internet Explorer             Main                FeatureControl                   FEATURE_ENABLE_CLIPCHILDREN_OPTIMIZATION                      contoso.exe = (DWORD) 00000000

The feature is enabled when the value is set to (DWORD) 00000001 and disabled when the value is (DWORD) 00000000.

Circular References in Script Management

Internet Explorer 8 and later. By default, Internet Explorer reduces memory leaks caused by circular references between Internet Explorer and the Microsoft JScript engine, especially in scenarios where a webpage defines an expando and the page is refreshed. If a legacy application no longer functions with these changes, the FEATURE_MANAGE_SCRIPT_CIRCULAR_REFS feature can disable these improvements.

By default, this feature is enabled for Internet Explorer and for applications hosting the WebBrowser Control. To disable this feature by using the registry, add the name of your executable file to the following setting.

 

HKEY_LOCAL_MACHINE (or HKEY_CURRENT_USER)    SOFTWARE       Microsoft          Internet Explorer             Main                FeatureControl                   FEATURE_MANAGE_SCRIPT_CIRCULAR_REFS                      contoso.exe = (DWORD) 00000000

The feature is enabled when the value is set to (DWORD) 00000001 and disabled when the value is (DWORD) 00000000.

Note  Because this feature improves the stability of Internet Explorer, disabling this feature is strongly discouraged.
 

Clipboard Script Control

When enabled, the FEATURE_ENABLE_SCRIPT_PASTE_URLACTION_IF_PROMPT feature allows scripts control over the Clipboard, even when the URLACTION_SCRIPT_PASTE URL action is set to "Prompt." This allows applications hosting the WebBrowser Control to opt out of a specific security check that may be unnecessary for the content displayed by the application. If the content is fully trusted and cannot be modified by any third-party, it may be safe to enable this feature. However, such a design decision should include a full security assessment. For more information, see Threat Modeling.

By default, this feature is disabled for Internet Explorer and enabled for applications hosting the WebBrowser Control. To enable this feature by using the registry, add the name of your executable file to the following setting.

 

HKEY_LOCAL_MACHINE (or HKEY_CURRENT_USER)    SOFTWARE       Microsoft          Internet Explorer             Main                FeatureControl                   FEATURE_ENABLE_SCRIPT_PASTE_URLACTION_IF_PROMPT                      contoso.exe = (DWORD) 00000001

The feature is enabled when the value is set to (DWORD) 00000001 and disabled when the value is (DWORD) 00000000.

Cross Domain Capture Event

The FEATURE_BLOCK_SETCAPTURE_XDOMAIN feature prevents capture events from being propagated to elements in webpages hosted on domains different than the one hosting the page containing the element that triggered the capture event.

By default, this feature is enabled for Internet Explorer 8 and for applications hosting the WebBrowser Control. To disable this feature by using the registry, add the name of your executable file to the following setting.

 

HKEY_LOCAL_MACHINE (or HKEY_CURRENT_USER)    SOFTWARE       Microsoft          Internet Explorer             Main                FeatureControl                   FEATURE_BLOCK_SETCAPTURE_XDOMAIN                      contoso.exe = (DWORD) 00000000

The feature is enabled when the value is set to (DWORD) 00000001 and disabled when the value is (DWORD) 00000000.

Cross Domain Redirection

When enabled, the FEATURE_CROSS DOMAIN_REDIRECT_MITIGATION feature applies cross-domain security to support files loaded by a webpage, including images, JavaScript libraries, Cascading Style Sheets (CSS) files, Microsoft ActiveX controls, and other file-based resources.

Note  For security reasons, this feature should not be changed.
 

By default, this feature is enabled for Internet Explorer 8 and for applications hosting the WebBrowser Control. To disable this feature by using the registry, add the name of your executable to the following setting.

 

HKEY_LOCAL_MACHINE (or HKEY_CURRENT_USER)    SOFTWARE       Microsoft          Internet Explorer             Main                FeatureControl                   FEATURE_CROSS_DOMAIN_REDIRECT_MITIGATION                      contoso.exe = (DWORD) 00000000

The feature is enabled when the value is set to (DWORD) 00000001 and disabled when the value is (DWORD) 00000000.

 


}

TWebBrowser