The basic use of CDHtmlDialog (c + + call JS function implementation) __JSONP

From: Qing Pan network-http://www.tsingfun.com/html/2015/dev_0826/CDHtmlDialog_cpp_call_js_interactive.html

"The basic use of CDHtmlDialog (JS call C + + function implementation)"
Based on the above articles, this article expands on its code base:
First, add a C + + button on the main dialog box, as follows:

The operation effect is as follows:

Second, for C + + button to add call JS code:
Jscppinteractive.htm to add a JS function for C + + calls, the code is as follows:

<script type= "Text/javascript" >
function Cppcalljsfunc () {
    alert ("JS Alert pop-up box. ");
}
</script>

Add the following code at the end of the JSCppInteractiveDlg.h:

	HRESULT calljsfunction (ihtmldocument2* pDoc2,
		CString strfunctionname,
		dispparams dispparams,
		variant* Varresult,
		excepinfo* exceptinfo,
		uint* nargerr);
Public:
	afx_msg void OnBnClickedButton1 ();

Add the following code at the end of the JSCppInteractiveDlg.cpp:

void Cjscppinteractivedlg::onbnclickedbutton1 () {//TODO: Add control notification handler code here ihtmldocument2* PDoc = NULL;

	Cdhtmldialog::getdhtmldocument (&pdoc);
	Dispparams param = {0};
	VARIANT Vtret;
Calljsfunction (PDoc, _t ("Cppcalljsfunc"), param, &vtret, null, NULL); HRESULT cjscppinteractivedlg::calljsfunction (ihtmldocument2* pDoc2, CString strfunctionname, Dispparam  S Dispparams, variant* varresult, excepinfo* exceptinfo, uint* nargerr) {IDispatch *pdispscript
	= NULL;
	HRESULT HRESULT;
	HResult = Pdoc2->get_script (&pdispscript);
	if (FAILED (HResult)) {return S_FALSE;   
	} DISPID DISPID;
	CComBSTR objbstrvalue = strfunctionname;
	BSTR Bstrvalue = Objbstrvalue.copy (); 
	Olechar *pszfunct = Bstrvalue; HResult = Pdispscript->getidsofnames (Iid_null, &pszfunct, 1, Locale_system_default, &dispid)
	;
		if (FAILED (HResult)) {pdispscript->release ();
	return hResult; } VARRESULT->VT = Vt_VARIANT;
				HResult = Pdispscript->invoke (DispID, Iid_null, Locale_user_default, Dispatch_method, &dispparams,  
	Varresult, Exceptinfo, Nargerr);

	Pdispscript->release ();
return hResult; }

The final operating effect is as follows:

Engineering code point for this download.