qt下的图像处理类开发的一个小例子,基于QGraphicsOpacityEffect-qt developed under the image processing class, a small example, based on QGraphicsOpacityEffect

用qt写的一个数字小键盘例子,arm-linux下的。若用在x86下直接转换编译器就行 -This is a QT demo for Number soft_keyboard

VC++一个非常实用多态的小例子，提供大家熟悉C语言多态特性的使用。-VC++ A very practical example of polymorphic small to provide everyone familiar with the C language the use of multi-modal characteristics.