How to draw a rectangle that can be rotated with VC MFC

Let me talk about an idea first. I defined a rectangle, in which five variables-Cpoint Center, INTA, INTB, FLOAT Angle and FLOAT W were maintained, corresponding to the center point, length and width, angle and angular velocity respectively, and defined a public method Update, which passed a time parameter float interval and a DC. According to these parameters, four points are generated (time multiplied by angular velocity is the angle of rotation, and the other is the geometry problem of lol in middle school), which are drawn by MoveToEx and LineTo. Then, you can set the OnTime message in the CView class so that updates are called every once in a while.

Hehe, pure theory, I hope you can succeed:)