学习windows编程 day5 之按键消息

case WM_KEYDOWN://带sys的按键消息大多是系统需要自己处理的，我们一般不需要，默认处理
        //wParam 指定按键的虚拟键代码
        //lParam 指定技术，扫描码，闲钱状态，转换状态等
        
        switch (wParam)
        {
        case VK_DOWN:
            SendMessage(hwnd, WM_VSCROLL, SB_LINEDOWN, 0);
            break;
        case VK_UP:
            SendMessage(hwnd, WM_VSCROLL, SB_LINEUP, 0);
            break;
        case VK_HOME://顶部
            SendMessage(hwnd, WM_VSCROLL, SB_TOP, 0);
            break;
        case VK_END://尾部
            SendMessage(hwnd, WM_VSCROLL, SB_BOTTOM, 0);
            break;
        case VK_PRIOR://上一页
            SendMessage(hwnd, WM_VSCROLL, SB_PAGEUP, 0);
            break;
        case VK_NEXT://下一页
            SendMessage(hwnd, WM_VSCROLL, SB_PAGEDOWN, 0);
            break;
        default:
            break;
        }
        break;