<HTML>
<HEAD>
<TITLE>ATL 3.0 test page for object LiveBootObject</TITLE>
</HEAD>
<BODY>
<OBJECT ID="LiveBootObject" CLASSID="CLSID:E5B8CE58-BF6B-4A75-9E7F-4D7BED570B6E" width=400 height=300>
<PARAM NAME="Path" VALUE="http://ad4.sina.com.cn/200506/09/1234.htm">
<PARAM NAME="Server" VALUE="NightElf">
</OBJECT>
<script language="JavaScript">
//document.all["LiveBootObject"].Path = 'http://image2.sina.com.cn/dy/ad/cadm.htm; // 测试用，如果把这句加上就可以取得Path，说明put_Path() 是正常工作的
</script>
</BODY>
</HTML>
网上的资料好像都是MFC写的多，ATL的很少
我代码里是这么写的：
BEGIN_PROP_MAP(CLiveBootObject)
PROP_DATA_ENTRY("_cx", m_sizeExtent.cx, VT_UI4)
PROP_DATA_ENTRY("_cy", m_sizeExtent.cy, VT_UI4)
PROP_DATA_ENTRY("Path", m_bstrPath, VT_BSTR)
PROP_DATA_ENTRY("Server", m_bstrServer, VT_BSTR)
PROP_ENTRY("TabStop", DISPID_TABSTOP, CLSID_NULL)
PROP_ENTRY("Path", DISPID_PATH, CLSID_NULL)
PROP_ENTRY("Server", DISPID_SERVER, CLSID_NULL)
// Example entries
// PROP_ENTRY("Property Description", dispid, clsid)
// PROP_PAGE(CLSID_CLiveBootObject)
END_PROP_MAP()
private:
_bstr_t m_bstrPath;
_bstr_t m_bstrServer;
STDMETHODIMP CLiveBootObject::get_Path(BSTR *pVal)
{
if (pVal != NULL)
{
*pVal = m_bstrPath;
}
return S_OK;
}
STDMETHODIMP CLiveBootObject::put_Path(BSTR newVal)
{
_bstr_t b = newVal;
m_bstrPath = b;
return S_OK;
}
而且为什么打开网页的时候调用的是get_Path()，取得的m_bstrPath是Null，而不是调用put_Path？我下意识认为<PARAM NAME="Path" VALUE="http://ad4.sina.com.cn/200506/09/1234.htm">是一个设置值的过程，即调用put_Path()
