Rect 矩形
polar to rect 极坐标转换为直角坐标
rect to polar 平面到极坐标
Round Rect Button 圆形按钮 ; 圆角矩形按钮 ; 圆角按钮
RECT r 需要刷新的矩形区域
RECT rcItem 控件所占据的矩形区域
POWER RECT 电源整流器
mesh rect 矩形网格
Rounded rect 圆角矩型
COMB straight or right 表示“直的”
rectilinear
rectangle
The rect function draws a rectangle, with the first two points defining the location and the next two defining width and height, respectively.
rect函数可绘制一个矩形，并且前两个点定义位置，而后面两个点则分别定义宽度和高度。
For example, the code in Listing 1 draws a square using the rect function, then specifies a change to the coordinate system using translate.
例如，清单1所示代码使用rect函数绘制了一个正方形，然后使用translate修改坐标系统。
Any new shapes drawn after the translate function appears using the offset; so in this case, the rect function actually creates a square at 100, 100, 150, 150, as shown in Figure 1, cell a.
translate函数之后绘制的任何形状都会加上这个偏移量；所以在这里，rect函数实际上在坐标100,100,150,150上创建一个正方形，如图1的单元格a所示。
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