通過WinApi調整WebKit COM的大小

Question

我將WebKit作爲COM對象嵌入到純WinApi應用程序中。我想通過獲取WM_WINDOWPOSCHANGED來調整WebKit窗口的大小。

LRESULT CALLBACK CBrowserView::WndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam) 
{ 
    typedef LRESULT (CBrowserView::*PFNPROC)(WPARAM wParam, LPARAM lParam); 
    PFNPROC pfnProc; 
    switch (uMsg) 
    { 
     case WM_WINDOWPOSCHANGED: 
      pfnProc = &CBrowserView::DoWindowPosChanged; 
... 


// CBrowserView::DoWindowPosChanged 

LRESULT CBrowserView::DoWindowPosChanged(WPARAM wParam, LPARAM lParam) 
{ 
    _ASSERT(m_hWnd); 

    WINDOWPOS* pwp = (WINDOWPOS*)lParam; 
    { 
     if (pwp->cx != m_lClientWidth || pwp->cy != m_lClientHeight) 
     { 
      m_lClientWidth = pwp->cx; 
      m_lClientHeight = pwp->cy; 

      if (m_pIWebBrowser) 
      { 
       { 
        RECT rcClient; 
        rcClient.left = 0; 
        rcClient.top = 0; 
        rcClient.right = m_lClientWidth; 
        rcClient.bottom = m_lClientHeight; 

        HRESULT hr = m_pIWebBrowser->initWithFrame(rcClient, 0, 0); 
        if (FAILED(hr)) 
         return E_FAIL; 

        hr = m_pIWebBrowser->mainFrame(&m_mainWebFrame); 
        if (FAILED(hr)) 
         return E_FAIL; 

        BSTR urlBstr = SysAllocString(m_pszFile);; 
        WebKitToUrl(urlBstr, true); 
       } 
      } 
     } 
    } 

    return 0; 
} 

但是，這個工作只有一次，在OnCreate對話框，小部件填充此客戶區。在調整大小失敗時，m_pIWebBrowser-> initWithFrame（rcClient，0，0）返回E_FAIL。

是否有另一種方法來設置m_pIWebBrowser大小？

Answer 1

1 ..應找到Widget HWND。

...

hr = m_pIWebBrowser->QueryInterface(IID_IWebViewPrivate, reinterpret_cast<void**>(&webViewPrivate)); 

if (FAILED(hr)) 
    return E_FAIL; 

hr = webViewPrivate->viewWindow(reinterpret_cast<OLE_HANDLE*>(&m_hudWnd)); 
if (FAILED(hr) || !m_hudWnd) 
    return E_FAIL; 

if (webViewPrivate) 
{ 
    webViewPrivate->Release(); 
    webViewPrivate = NULL; 
} 

...

2 ..使用非標準WINAPI移動|調整窗口大小。

LRESULT CBrowserView::DoWindowPosChanged(WPARAM wParam, LPARAM lParam) 
{ 
    _ASSERT(m_hWnd); 

    WINDOWPOS* pwp = (WINDOWPOS*)lParam; 
    { 
     if (pwp->cx != m_lClientWidth || pwp->cy != m_lClientHeight) 
     { 
      m_lClientWidth = pwp->cx; 
      m_lClientHeight = pwp->cy; 

      if (m_pIWebBrowser && m_hudWnd) 
      { 
       RECT rcClient; 
       rcClient.left = 0; 
       rcClient.top = 0; 
       rcClient.right = m_lClientWidth; 
       rcClient.bottom = m_lClientHeight; 

       ::MoveWindow(m_hudWnd, rcClient.left, rcClient.top, rcClient.right, rcClient.bottom, TRUE); 
      } 
     } 
    } 
    return 0; 
}