The CreateEllipticRgnIndirect function creates an elliptical region.
HRGN CreateEllipticRgnIndirect(
CONST RECT *lprc |
// pointer to structure defining bounding rectangle |
); |
If the function succeeds, the return value is the handle to the region.
If the function fails, the return value is NULL. To get extended error information, call GetLastError.
A bounding rectangle defines the size, shape, and orientation of the region: The long sides of the rectangle define the length of the ellipse’s major axis; the short sides define the length of the ellipse’s minor axis; and the center of the rectangle defines the intersection of the major and minor axes.
The coordinates of the bounding rectangle are specified in logical units.
CreateEllipticRgn, DeleteObject, RECT, SelectObject
file: /Techref/os/win/api/win32/func/src/f09_6.htm, 2KB, , updated: 2000/4/7 12:19, local time: 2024/8/25 07:57,
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