The Arc function draws an elliptical arc.
BOOL Arc(
HDC hdc, // handle to device context
int nLeftRect, // x-coord of bounding rectangle's upper-left corner
int nTopRect, // y-coord of bounding rectangle's upper-left corner
int nRightRect, // x-coord of bounding rectangle's lower-right corner
int nBottomRect, // y-coord of bounding rectangle's lower-right corner
int nXStartArc, // first radial ending point
int nYStartArc, // first radial ending point
int nXEndArc, // second radial ending point
int nYEndArc // second radial ending point
);
Windows 95 and Windows 98: The sum of nLeftRect plus nRightRect must be less than 32768.
Windows 95 and Windows 98: The sum of nTopRect plus nBottomRect must be less than 32768.
Windows 95 and Windows 98: The sum of nLeftRect plus nRightRect must be less than 32768.
Windows 95 and Windows 98: The sum of nTopRect plus nBottomRect must be less than 32768.
If the arc is drawn, the return value is nonzero.
If the arc is not drawn, the return value is zero.
Windows NT: To get extended error information, call GetLastError.
The points (nLeftRect, nTopRect) and (nRightRect, nBottomRect) specify the bounding rectangle. An ellipse formed by the specified bounding rectangle defines the curve of the arc. The arc extends in the current drawing direction from the point where it intersects the radial from the center of the bounding rectangle to the (nXStartArc, nYStartArc) point. The arc ends where it intersects the radial from the center of the bounding rectangle to the (nXEndArc, nYEndArc) point. If the starting point and ending point are the same, a complete ellipse is drawn.
The arc is drawn using the current pen; it is not filled.
The current position is neither used nor updated by Arc.
Windows 95 and Windows 98: The drawing direction is always counterclockwise.
Windows NT: Use the GetArcDirection and SetArcDirection functions to get and set the current drawing direction for a device context. The default drawing direction is counterclockwise.
Windows 95 and Windows 98: The sum of the coordinates of the bounding rectangle cannot exceed 32,767. The sum of nLeftRect and nRightRect or nTopRect and nBottomRect parameters cannot exceed 32,767.
Windows NT: Requires version 3.1 or later.
Windows: Requires Windows 95 or later.
Windows CE: Unsupported.
Header: Declared in wingdi.h.
Import Library: Use gdi32.lib.
Lines and Curves Overview, Line and Curve Functions, AngleArc, ArcTo, Chord, Ellipse, GetArcDirection, Pie, SetArcDirection