We can see "8: Last message" but not printed in wmpaint_display_threeD_proc with. .\winmain_001.cpp Tue Jan 26 11:16:34 2021 369 : case 8: 370 : { 371 : printf("WM_PAINT 012: uMsg: %d starts.\r\n", uMsg); 372 : HDC hdc = BeginPaint(hWnd, p…