JS调用C++
1.注册C++函数。
//注册回调函数宏
//根据不同需要支持注册两个函数原型，注意CONNECT_JS_CALL_SIMPLE_HANDLER中注册的函数
//需要提前和HTML调用协调好，参数必须都为字符，负责会引起未知问题
#define CONNECT_JS_CALL_HANDLER(name, func, pContext) do
{
if (!CBKCallBackFuncContainer::GetFuncPtr()->NameId(L#name))
CBKCallBackFuncContainer::GetFuncPtr()->ConnectJSFuncHandler(L#name, (JSCallbackFunction)&func, FALSE, pContext);
} while (FALSE);
CONNECT_JS_CALL_HANDLER(OpenCustomStockDlg, (JSCallbackFunction)&OpenCustomStockDlg, this);
2.被调函数声明。
static int OpenCustomStockDlg(DISPPARAMS* params, VARIANT* retval , void* pContext);
3.被调函数实现。
int CXXWindow::OpenCustomStockDlg(DISPPARAMS* params, VARIANT* retval , void* pContext)
{
CFinancialMainWindow* _pThis = static_cast<CFinancialMainWindow*>(pContext);
ATLASSERT(_pThis);
CString strCur = "0";
if (params->cArgs == 1)
{
strCur = params->rgvarg[0];
}
//_pThis->OpenLogingSetDlg(StrToLong(strCur));
CString strPara = _pThis->Get_SignPara();
CustomStockSynchronous dlgCustomStock(strPara);
dlgCustomStock.DoModal();
return 0;
}
4.html编写
<HTML>
<HEAD><TITLE>js 按键记录</TITLE>
</HEAD>
<script type="text/javascript">
function $(s){return document.getElementById(s)?document.getElementById(s):s;}
function keypress(e)
{
var e=e||event;
var currKey=e.keyCode||e.which||e.charCode;
if (currKey == 27)//ESC = 27
{
if (external != undefined)
{
external.KeyElvesClose("clear"); //关掉键盘精灵界面，传clear则清空键盘精灵字符串，不传或者为空则只关闭界面
}
}
else
{
if (external != undefined )
{
external.OpenCustomStockDlg(currKey); //向键盘精灵传字符
}
}
$("test1").focus();//设置焦点
}
</script>
<body >
<input type="text" />
<p>文本框内按键触发键盘精灵</p>
</body>
</HTML>