When window is minimized set browser size to 0x0 to reduce resource usage

[cztomczak]

There are changes in cefclient in regards to WM_RESIZE event. When window is minimized browser size is set to 0x0 to reduce resource usage. See example code from cefclient:

LRESULT CALLBACK RootWindowWin::RootWndProc(HWND hWnd, UINT message,
                                            WPARAM wParam, LPARAM lParam) {
...
  case WM_SIZE:
      self->OnSize(wParam == SIZE_MINIMIZED);
      break;
...
}
void RootWindowWin::OnSize(bool minimized) {
  if (minimized) {
    // Notify the browser window that it was hidden and do nothing further.
    if (browser_window_)
      browser_window_->Hide();
    return;
  }

  if (browser_window_)
    browser_window_->Show();

  ...
}

void BrowserWindowStdWin::Show() {
  REQUIRE_MAIN_THREAD();

  HWND hwnd = GetWindowHandle();
  if (hwnd && !::IsWindowVisible(hwnd))
    ShowWindow(hwnd, SW_SHOW);
}

void BrowserWindowStdWin::Hide() {
  REQUIRE_MAIN_THREAD();

  HWND hwnd = GetWindowHandle();
  if (hwnd) {
    // When the frame window is minimized set the browser window size to 0x0 to
    // reduce resource usage.
    SetWindowPos(hwnd, NULL,
        0, 0, 0, 0, SWP_NOZORDER | SWP_NOMOVE | SWP_NOACTIVATE);
  }
}