TRect

TR务毫附优财浓兵ect是Delphi语言里面的一个数据类型，形同c++里面的CRe顶早ct类，定义了一个矩形，包括top、bottom、left、right、w烧斯idth、height。

• 外文名称 TRect
• 解释 Delphi 语言里面的一个数据类型
• 包括 top，bottom，left，right等
• 补充 重载了运算符

简也鲜厂而哥状里松跑析叶述

　　当然，重载了运算符。

TRect类型

　　TRect defines a rectangle.

　　Unit

　　来自Types

　　Delphi syntax:

　　type

　　TRect = packed record

　　case Integer of

　　0: (Left, Top, Right, Bottom: Integer);

　　1: (TopLeft, BottomRight: TPoi360百科nt);

　　end述段;

　　C++ syntax:

　　struct TRect

　　{

　　TRect() {}

　　TRect(const TPoint& TL, co前某民蒸nst TPoint& BR) { left=T甲补定刘限衡L.x; top=T验依破在底触观L.y; right=BR.x; bottom=BR.y; }

　　TRect(int l, int t, int r, i织机属病功nt b) { left=l; top=t; right=r; bottom=b; }

　　TRect(RECT& r)

　　{

　　left = r.left;

　　top = r.top;

　　rig笔力沿良稳的温愿派ht = r.right;

　　宪也bottom = r.botto板晶承规销原封听m;

　　}

　　int Width () const { return right - left; }

　　int Heig什投ht() const { re增turn bottom - top ; }

　　bool operator ==(co先下nst TRect& rc) const

　　{

　　return left == rc.left && top==r银罗预例胜汉c.top &&

　　right == rc.right && bottom==rc.bottom;

　　}

　　bool oper斤队酒造室伯异ator !=(const TRect& rc) const

　　{ return !(资期rc==*this); }

　　__property LONG Left = { read=left, write=left };

　　__property LONG Top = { read=top, write=top };

　　__property LONG Right = { read=right, write=right };

　　__property LONG Bottom = { read=bottom, write=bottom };

　　};

　　Description

　　T载搞食某逐办斗Rect repr化院足进两丰屋想班esents the dimensions of a rectangle. The coordinates are specifi阳预苗转苗友超ed as either four separate integers representing the left, top, right, and bottom sides, or as two points representing the locations of the top left and bottom right corners.

　　Typically, TRect values represent pixel locations, where the origin of the pixel coordinate system is in the top left corner of the screen (screen coordinates) or the top left corner of a control抯 client area (client coordinates). When a TRect value represents a rectangle on the screen, by convention the top and left edges are considered inside the rectangle and the bottom and right edges are considered outside the rectangle. This convention allows the width of the rectangle to be Right - Left and the height to be Bottom - Top.