目前我想自动运行IE浏览器。我已经成功连接使用以下代码的运行IE(I假设仅存在一个IE一个翼片内)如何在C++ XE2中监听使用IWebBrowser2运行IE的事件?
#include "atl/atlbase.h"
#include <exdisp.h>
#include <mshtml.h>
CComQIPtr<IWebBrowser2> pCurIE;
void __fastcall TForm4::Button3Click(TObject *Sender)
{
bool SuccessToHook = false;
CComPtr<IShellWindows> m_spSHWinds;
if (FAILED(m_spSHWinds.CoCreateInstance(__uuidof(ShellWindows)))){
return ;
}
LONG nCount;
m_spSHWinds->get_Count(&nCount);
ShowMessage(nCount);
for (int i = 0; i < nCount; i++) {
CComPtr<IDispatch> pDisp;
m_spSHWinds->Item(CComVariant(i), &pDisp);
CComQIPtr<IWebBrowser2> pIE(pDisp);
if (pIE == NULL){
continue ;
}
CComPtr<IDispatch> pDispDoc;
pIE->get_Document(&pDispDoc);
CComQIPtr<IHTMLDocument2> pHtmlDoc(pDispDoc);
if (pHtmlDoc){
pCurIE = pIE;
SuccessToHook = true;
break ;
}
}
ShowMessage(SuccessToHook ? "Success to hook." : "Failed to hook.");
}
现在我可以控制当前运行IE像导航和读取的当前状态。但是,当我想在onDocumentComplete事件这样的事件被触发时显示消息。我不知道如何按照我当前的代码来收听活动。一个简单的示例代码与BCB将非常赞赏,因为有一些样本与VC + +,但我的项目是在C++ XE2。
谢谢@Remy Lebeau和this link,我终于解决了我的问题。 我在这里留下我的代码,并希望这可能对别人有帮助。
从TEventDispatcher
#include <exdisp.h>
#include <exdispid.h>
#include <mshtml.h>
#include <mshtmdid.h>
#include <utilcls.h>
//---------------------------------------------------------------------------
class TForm4;
class EventHandler:public TEventDispatcher<EventHandler,&DIID_DWebBrowserEvents2>{
private:
bool connected;
TForm4 *theform;
IUnknown* server;
protected:
HRESULT InvokeEvent(DISPID id, TVariant *params){
switch(id){
case DISPID_DOCUMENTCOMPLETE:
ShowMessage("On Document Complete");
break;
default:
break;
}
}
public:
EventHandler(){
connected = false; //not connected;
theform = false; //backptr to form is null
}
~EventHandler(){
if (connected)
Disconnect();
}
void Connect(TForm4 *form, IUnknown* srv){
server = srv;
theform = form; //back pointer to form to do stuff with it.
server->AddRef(); //addref the server
ConnectEvents(server);
}
void Disconnect(){
DisconnectEvents(server); //disconnect the events
server->Release();
}
};
开始派生的类听
void __fastcall TForm4::Button5Click(TObject *Sender)
{
Event = new EventHandler();
Event->Connect(this, pCurIE);
}
停止监听
void __fastcall TForm4::Button6Click(TObject *Sender)
{
Event->Disconnect();
}
感谢您的回复。我先试试吧! – Willy 2012-07-26 03:25:43
它的工作原理!你已经回答了我很多问题......非常感谢你! – Willy 2012-07-26 07:26:39