自定义类处理消息循环HWND_MESSAGE

来源：互联网发布：php 编译扩展dll 编辑：程序博客网时间：2024/06/05 22:31

LRESULT CALLBACK CCustomMsgObject::__WindowProc(HWND hwnd,UINT uMsg,WPARAM wParam,LPARAM lParam){CCustomMsgObject* pThis = NULL;if (uMsg == WM_NCCREATE) {LPCREATESTRUCT lpCS = reinterpret_cast<LPCREATESTRUCT>(lParam);pThis = static_cast<CCustomMsgObject*>(lpCS->lpCreateParams);ATLASSERT(NULL != pThis);::SetWindowLongPtr(hwnd, GWLP_USERDATA, reinterpret_cast<LONG>(pThis));} else {pThis = reinterpret_cast<CCustomMsgObject*>(::GetWindowLongPtr(hwnd, GWLP_USERDATA));if (NULL == pThis || pThis->m_hWnd != hwnd) {return ::DefWindowProc(hwnd, uMsg, wParam, lParam);}return pThis->HandleMessage(uMsg, wParam, lParam);}return ::DefWindowProc(hwnd, uMsg, wParam, lParam);}LRESULT CCustomMsgObject::HandleMessage(UINT uMsg, WPARAM wParam, LPARAM lParam){if (uMsg == WM_COPYDATA) {if (OnCopyData((HWND)wParam, (COPYDATASTRUCT*)lParam)) {return S_OK;}}return ::DefWindowProc(m_hWnd, uMsg, wParam, lParam);}void CCustomMsgObject::CreateMsgPumpWnd(){if (m_hWnd != NULL) return;HINSTANCE hInst = GetModuleHandle(0);LPCTSTR lpWndClsName = _T("wndClsMsgPumpWnd");WNDCLASS wc = {0};wc.lpszClassName = lpWndClsName;wc.style = CS_NOCLOSE;wc.hInstance = hInst;wc.lpfnWndProc = __WindowProc;ATLVERIFY(RegisterClass(&wc));m_hWnd = CreateWindow(lpWndClsName, 0, 0, 0, 0, 0, 0, HWND_MESSAGE, 0, hInst, this);}

0 0