VC中使用WebBrowser如何模拟网页的onMouseDown事件
先用get_onmousedown,再用Invoke应该是对的呀，返回值hresult竟然是E_INVALIDARG
代码如下：
VARIANT varMouseDown;
varMouseDown.vt = VT_DISPATCH;
pElement->get_onmousedown(&varMouseDown);
IDispatch *pDispMouseDown;
pDispMouseDown = varMouseDown.pdispVal;
HRESULT hresult;
hresult = pDispMouseDown->Invoke(0, IID_NULL, 0, DISPATCH_METHOD, 0, NULL, NULL, 0);
int itest = 0;
[解决办法]
VariantInit没调用，鬼知道里面有什么
[解决办法]
http://www.codeproject.com/Articles/4805/Advanced-customization-of-WebBrowser-Control-in-Di
Advanced customization of WebBrowser Control in Dialog based app.
[解决办法]
varMouseDown.vt = VT_DISPATCH这一行去掉，你设置了dispatch一定要设置lpdispatch的，不然就不匹配了
