LRESULT CALLBACK WndMainProc (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
switch (message)
{
case WM_GRAPHNOTIFY:
HandleGraphEvent();
break;
case WM_SIZE:
ResizeVideoWindow();
break;
case WM_WINDOWPOSCHANGED:
ChangePreviewState(! (IsIconic(hwnd)));
break;
case WM_CLOSE:
// Hide the main window while the graph is destroyed
ShowWindow(ghApp, SW_HIDE);
CloseInterfaces(); // Stop capturing and release interfaces
break;
case WM_DESTROY:
PostQuitMessage(0);
return 0;
}
// Pass this message to the video window for notification of system changes
if (g_pVW)
g_pVW->NotifyOwnerMessage((LONG_PTR) hwnd, message, wParam, lParam);
return DefWindowProc (hwnd , message, wParam, lParam);
}
HRESULT CAccessSys::SetupVideoWindow(HWND h)
{
HRESULT hr;
// Set the video window to be a child of the main window
hr = p_video_window->put_Owner((OAHWND)h);
if (FAILED(hr))
return hr;
hr = p_video_window->put_MessageDrain((OAHWND)h);
if (FAILED(hr))
return hr;
// Set video window style
hr = p_video_window->put_WindowStyle(WS_CHILD | WS_CLIPCHILDREN);
if (FAILED(hr))
return hr;
// Use helper function to position video window in client rect
// of main application window
ResizeVideoWindow(h);
// Make the video window visible, now that it is properly positioned
hr = p_video_window->put_Visible(OATRUE);
if (FAILED(hr))
return hr;
return hr;
}
HRESULT SetupVideoWindow(void)
{
HRESULT hr;
// Set the video window to be a child of the main window
hr = g_pVW->put_Owner((OAHWND)ghApp);
if (FAILED(hr))
return hr;
// Set video window style
hr = g_pVW->put_WindowStyle(WS_CHILD | WS_CLIPCHILDREN);
if (FAILED(hr))
return hr;
// Use helper function to position video window in client rect
// of main application window
ResizeVideoWindow();
// Make the video window visible, now that it is properly positioned
hr = g_pVW->put_Visible(OATRUE);
if (FAILED(hr))
return hr;
return hr;
}
HRESULT CCaptureVideo::SetupVideoWindow()
{
HRESULT hr;
hr = m_pVW->put_Owner((OAHWND)m_hWnd);
if (FAILED(hr))return hr;
hr = m_pVW->put_WindowStyle(WS_CHILD | WS_CLIPCHILDREN);
if (FAILED(hr))return hr;
ResizeVideoWindow();
hr = m_pVW->put_Visible(OATRUE);
return hr;
}
