WORD Output(LPPDEVICE lpDestDev, WORD wStyle, WORD wCount,
LPPOINT lpPoints, LPPPEN lpPPen, LPPBRUSH lpPBrush,
LPDRAWMODE lpDrawMode, LPRECT lpClipRect);
Draws an arc and the chord connecting the endpoints of the arc.
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_CHORD.
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 border.
lpPBrush
Address of a PBRUSH structure that specifies the physical brush that is used to fill the figure.
lpDrawMode
Address of a DRAWMODE structure that contains information that is used to draw the border and fill the interior.
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.
Because the resulting figure is closed, Output fills the figure and draws the border. GDI specifies OS_CHORD when an application calls the Chord function (GDI.348).
A graphics driver must support this style if the CC_CHORD value is set in the dpCurves member of the GDIINFO structure.
Output draws the arc and chord by first filling the interior then drawing the border.
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.
See also PDEVICE, PBITMAP, DRAWMODE, RECT, POINT