软件概览
实现转盘选择器。用户可以用手指旋转圆盘，从而进行选择。 [Code4App.com]
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2009-08-12 17:35 自己看看吧，这是最原始的函数说明。 The WM_MOUSEWHEEL message is sent to the focus window when the mouse wheel is rotated. The DefWindowProc function propagates the message to the window's parent. Ther