// Function: OnCommand // Handles WM_COMMAND messages (Menu, toolbar, etc) void MainWindow::OnCommand(HWND hwnd, int id, HWND hCtl, UINT codeNotify) { switch(id) { case IDM_FILE_EXIT: PostQuitMessage(0); break; case IDM_FILE_CLEAR: InvalidateRect(hwnd, &Recto, FALSE); InvalidateRect(hwnd, &Recto, TRUE); break; case IDM_HELP_ABOUT: AboutDialog* dlg = new AboutDialog(); dlg->Run(m_hInstance, hwnd); delete dlg; dlg = NULL; break; } }