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Ellipse 函数
画一个椭圆。圆心是标识的矩形的中心。椭圆轮廓会被设备环境当前画笔绘画，同时椭圆被当前画刷填充。
函数原型：
int Ellipse (
HDC hcc,int nLeftRect,int nTopRect,int nRightRect,int nBottomRect );
参数
hcc
类型：HDC
设备环境句柄。
nLeftRect
类型：int
矩形左上角横座标
nTopRect
类型：int
矩形左上角纵座标
nRightRect
类型：int
矩形右角横座标
nBottomRect
类型：int
矩形右下角纵座标
返回值
类型：int
如果成功，返回非0。
如果失败，返回0。
如果失败，返回0。
备注
Eclipse 函数不会使用和修改当前位置。
支持
| 最低桌面系统支持 | Windows 2000 Professional |
| 头文件 | Wingdi.h (已包含在Windows.h中) |
| 库 | Gdi32.lib |
| DLL | Gdi32.dll |
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