diff options
Diffstat (limited to 'src/activeqt/control/qaxserverbase.cpp')
| -rw-r--r-- | src/activeqt/control/qaxserverbase.cpp | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/src/activeqt/control/qaxserverbase.cpp b/src/activeqt/control/qaxserverbase.cpp index cbdf538..2eb0a77 100644 --- a/src/activeqt/control/qaxserverbase.cpp +++ b/src/activeqt/control/qaxserverbase.cpp @@ -1621,14 +1621,24 @@ HWND QAxServerBase::create(HWND hWndParent, RECT& rcPos) atom = RegisterClass(&wcTemp); } LeaveCriticalSection(&createWindowSection); - if (!atom && GetLastError() != ERROR_CLASS_ALREADY_EXISTS) - return 0; + if (!atom) { + const DWORD errorCode = GetLastError(); + if (errorCode != ERROR_CLASS_ALREADY_EXISTS) { + qErrnoWarning(int(errorCode), "%s: RegisterClass() failed", __FUNCTION__); + return nullptr; + } + } Q_ASSERT(!m_hWnd); HWND hWnd = ::CreateWindow(reinterpret_cast<const wchar_t *>(cn.utf16()), 0, WS_CHILD | WS_CLIPCHILDREN | WS_CLIPSIBLINGS, rcPos.left, rcPos.top, rcPos.right - rcPos.left, rcPos.bottom - rcPos.top, hWndParent, 0, hInst, this); + // m_hWnd is assigned in reponse to WM_CREATE + if (!hWnd) { + qErrnoWarning("%s: CreateWindow() failed", __FUNCTION__); + return nullptr; + } Q_ASSERT(m_hWnd == hWnd); @@ -3804,7 +3814,10 @@ HRESULT QAxServerBase::internalActivate() if (!::IsChild(m_hWnd, ::GetFocus()) && qt.widget->focusPolicy() != Qt::NoFocus) ::SetFocus(m_hWnd); } else { - create(hwndParent, rcPos); + if (!create(hwndParent, rcPos)) { + qWarning("%s: Window creation failed.", __FUNCTION__); + return E_FAIL; + } } } |