IWebBrowser2在没有焦点时响应滚轮事件_win32 iwebbrowser2响应鼠标和键盘-优快云博客

本文介绍了一种方法来操控IE浏览器控件，并实现了对WM_MOUSEWHEEL消息的截获与转发，使外部窗口能控制IE控件内的页面滚动。

首先, 获得IE控件窗口句柄, 父窗口调用EnumChildWindows, 回调函数代码:

BOOL CALLBACK CWebDialog::EnumChildProc(HWND hwnd, LPARAM lParam) { CWebDialog* webDialog = (CWebDialog*)(lParam); return webDialog->EnumChildProc(hwnd); } BOOL CWebDialog::EnumChildProc(HWND hwnd) { // 窗口类别名 TCHAR classname[200]; GetClassName(hwnd, classname, _countof(classname)); // 窗口类型 DWORD style = 0; style = (DWORD)GetWindowLong(hwnd, GWL_STYLE); // 查找IE控件窗口 if (CString(_T("Internet Explorer_Server")).Compare(classname) == 0) { m_htmlWindow = hwnd; } return true; }

其次, 截获WM_MOUSEWHEEL事件

BOOL CXXXView::PreTranslateMessage(MSG* pMsg) { if (pMsg->message == WM_MOUSEWHEEL) { if (m_dlgXXX.Scroll(pMsg)) { return TRUE; } } return CXXXDialog::PreTranslateMessage(pMsg); }

再次, 转发WM_MOUSEWHEEL事件

BOOL CWebDialog::Scroll(MSG* pMsg) { if (pMsg->message == WM_MOUSEWHEEL && m_htmlWindow != NULL && m_htmlWindow != pMsg->hwnd) { ::PostMessage(m_htmlWindow, WM_MOUSEWHEEL, pMsg->wParam, pMsg->lParam); return TRUE; } return FALSE; }

最后, 感谢许冬、周宏杰的帮助!