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.
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.
See also PDEVICE, PBITMAP, DRAWMODE, RECT, POINT