CreateEllipticRgn |
VB声明 | |
Declare Function CreateEllipticRgn Lib "gdi32" Alias "CreateEllipticRgn" (ByVal X1 As Long, ByVal Y1 As Long, ByVal X2 As Long, ByVal Y2 As Long) As Long | |
说明 | |
创建一个椭圆,该椭圆与X1,Y1和X2,Y2坐标点确定的矩形内切 | |
返回值 | |
Long,执行成功则为区域句柄,失败则为零 | |
参数表 | |
参数 | 类型及说明 |
X1,Y1 | Long,矩形左上角X,Y坐标 |
X2,Y2 | Long,矩形右下角X,Y坐标 |
注解 | |
不用时一定要用DeleteObject函数删除区域。用Ellipse API函数绘出的椭圆与该椭圆区域不完全相同,因为本函数的绘图计算不包括矩形的下边和右边 |
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