Output(OS_ARC)

WORD Output(
  LPPDEVICE lpDestDev, 
  WORD wStyle, 
  WORD wCount, 
  LPPOINT lpPoints, 
  LPPPen lpPPen, 
  LPPBRUSH lpPBrush, 
  LPDRAWMODE lpDrawMode, 
  LPRECT lpClipRect
 );

Draws the arc that lies between calculated endpoints on the specified ellipse.

Returns any of the following values:

1	Function was successful.
0	Unrecoverable error occurred.
-1	Function does not support specified style.

lpDestDev

Address of a PDEVICE or PBITMAP structure that specifies the destination device or bitmap.

wStyle

Must be OS_ARC.

wCount

Must be 5.

lpPoints

Address of an array that contains five POINT structures:

Index	Description
0	Upper-left corner of the bounding rectangle.
1	Lower-right corner of the bounding rectangle.
2	Starting point for the arc.
3	Ending point for the arc.
4	Start and stop angles. Reserved; do not use.

lpPPen

Address of a PPEN structure that specifies the physical pen that is used to draw the arc.

lpPBrush

Address of a PBRUSH structure. This parameter is not used to draw an arc.

lpDrawMode

Address of a DRAWMODE structure that contains drawing information that is used to draw the arc.

lpClipRect

Address of a RECT structure that contains coordinates for the clipping rectangle. If the lpClipRect parameter is NULL, the clipping rectangle is the entire display surface.

Output draws an arc by drawing a portion of the ellipse contained in the specified bounding rectangle. The function calculates the endpoints of the arc using the starting and ending points; each endpoint is the intersection of the ellipse and a ray drawn from the center of the bounding rectangle through the specified starting or ending point. Output draws the arc in a counterclockwise direction, from starting point up to, but not including, the ending point.

A graphics driver must support the OS_ARC style if the CC_ELLIPSES or CC_CIRCLES value is set in the dpCurves member of the GDIINFO structure.

Output(OS_ARC)

See Also