根据图中显示的从属关系，顺藤摸瓜，最内层的窗口“Internet Explorer_Server”的句柄就是我们需要的东西。为了简化问题，我这里使用了来自MSDN Magazine资深专栏撰稿人Paul Dilascia的CFindWnd类，非常好用。
| ////////////////////////////////////////////////////////////////
// MSDN Magazine -- August 2003
// If this code works, it was written by Paul DiLascia.
// If not, I don't know who wrote it.
// Compiles with Visual Studio .NET on Windows XP. Tab size=3.
//
// ---
// This class encapsulates the process of finding a window with a given class name
// as a descendant of a given window. To use it, instantiate like so:
//
// CFindWnd fw(hwndParent,classname);
//
// fw.m_hWnd will be the HWND of the desired window, if found.
//
class CFindWnd {
private:
//////////////////
// This private function is used with EnumChildWindows to find the child
// with a given class name. Returns FALSE if found (to stop enumerating).
//
static BOOL CALLBACK FindChildClassHwnd(HWND hwndParent, LPARAM lParam) {
CFindWnd *pfw = (CFindWnd*)lParam;
HWND hwnd = FindWindowEx(hwndParent, NULL, pfw->m_classname, NULL);
if (hwnd) {
pfw->m_hWnd = hwnd; // found: save it
return FALSE; // stop enumerating
}
EnumChildWindows(hwndParent, FindChildClassHwnd, lParam); // recurse
return TRUE; // keep looking
}
public:
LPCSTR m_classname; // class name to look for
HWND m_hWnd; // HWND if found
// ctor does the work--just instantiate and go
CFindWnd(HWND hwndParent, LPCSTR classname)
: m_hWnd(NULL), m_classname(classname)
{
FindChildClassHwnd(hwndParent, (LPARAM)this);
}
}; |
再写一个函数InvokeIEServerCommand，调用就很方便了，《Internet Explorer 编程简述（四）“添加到收藏夹”对话框》中最后给出的方法就是从这里来的。
| void CMyHtmlView::InvokeIEServerCommand(int nID)
{
CFindWnd FindIEWnd( m_wndBrowser.m_hWnd, "Internet Explorer_Server");
::SendMessage( FindIEWnd.m_hWnd, WM_COMMAND, MAKEWPARAM(LOWORD(nID), 0x0), 0 );
} |
|
