在MFC对话框中使用Google地图(续)

    在完成了基本功能以后，接下来就可以实现输入经纬度在地图中显示地点的功能了。这里就要用到VC和JavaScript的混合编程了。

如何在VC中调用JavaScript的函数，以下两个分别是CWebPage类的.h和.cpp文件：

// WebPage.h: interface for the CWebPage class.
//
//////////////////////////////////////////////////////////////////////

#if !defined(AFX_WEBPAGE_H__AEBD50B8_EE66_40AB_8B92_C4EECB9BCD22__INCLUDED_)
#define AFX_WEBPAGE_H__AEBD50B8_EE66_40AB_8B92_C4EECB9BCD22__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000

#include <atlbase.h>
#include <Mshtml.h>

class CWebPage  
{
public:
    CWebPage();
    virtual ~CWebPage();

    bool SetDocument(IDispatch* pDisp);
    LPDISPATCH GetHtmlDocument() const;
    const CString GetLastError() const;
    bool GetJScript(CComPtr<IDispatch>& spDisp);
    bool GetJScripts(CComPtr<IHTMLElementCollection>& spColl);

    CString ScanJScript(CString& strAText, CStringArray& args);

    bool CallJScript(const CString strFunc,CComVariant* pVarResult = NULL);
    bool CallJScript(const CString strFunc,const CString strArg1,CComVariant* pVarResult = NULL);
    bool CallJScript(const CString strFunc,const CString strArg1,const CString strArg2,CComVariant* pVarResult = NULL);
    bool CallJScript(const CString strFunc,const CString strArg1,const CString strArg2,const CString strArg3,CComVariant* pVarResult = NULL);
    bool CallJScript(const CString strFunc,const CStringArray& paramArray,CComVariant* pVarResult = NULL);

protected:


    void ShowError(LPCSTR lpszText);

protected:

    CComPtr<IHTMLDocument2>    m_spDoc;
    CString    m_strError;

};

inline
void CWebPage::ShowError(LPCSTR lpszText)
{
    m_strError = "JSCall Error:\n" + CString(lpszText);
}
inline 
const CString CWebPage::GetLastError() const
{
    return m_strError;
}
inline
LPDISPATCH CWebPage::GetHtmlDocument() const
{
    return m_spDoc;
}

CString GetNextToken(CString& strSrc, const CString strDelim,bool bTrim = false, bool bFindOneOf = true);

#endif // !defined(AFX_WEBPAGE_H__AEBD50B8_EE66_40AB_8B92_C4EECB9BCD22__INCLUDED_)

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