microsoft web brower控件禁止运行脚本方法

重写OnAmbientProperty函数

最新推荐文章于 2022-03-30 20:41:31 发布

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本文介绍如何在控件宿主中重写CWnd::OnAmbientProperty虚函数，以自定义返回给OLE控件的环境属性值。通过设置DLCTL_NO_SCRIPTS等标志，可以控制控件的行为。

首先控件宿主应该先要重写一个虚函数

CWnd::OnAmbientProperty

The framework calls this member function to obtain ambient property values from a window that contains OLE controls.

virtual BOOL OnAmbientProperty(
   COleControlSite* pSite,
   DISPID dispid,
   VARIANT* pvar 
);

Parameters
       
        
         pSite
        
        
         Pointer to the site of the control that requested the ambient property.
        
       
       
        
         dispid
        
        
         The dispatch ID of the requested ambient property.
        
       
       
        
         pvar
        
        
         Pointer to a caller-allocated VARIANT structure, through which the ambient property's value will be returned.
        
       
       
        
           Return Value
        
        
         
         TRUE if the ambient property is supported; FALSE if not.
        
       
       
        
           Remarks
        
        
         
         Override this function to alter the default ambient property values returned by an OLE control container to its controls. 
         Any
          ambient property requests not handled by an overriding function should be forwarded to the base class implementation.
          
          
          
         然后在函数中添加
         	if   (dispid   ==   DISPID_AMBIENT_DLCONTROL) 
	{ 
		pvar-> vt   =   VT_I4; 
		pvar-> lVal   =   DLCTL_NO_SCRIPTS   |   DLCTL_NO_JAVA 
			|   DLCTL_NO_RUNACTIVEXCTLS   |   DLCTL_NO_DLACTIVEXCTLS; 
		
		return   TRUE; 
	}