| WORD Output(lpDestDev, OS_PIE, 5, lpPoints, lpPPen, lpPBrush, lpDrawMode, lpClipRect) | |||
| LPPDEVICE lpDestDev; | |||
| LPPOINT lpPoints; | |||
| LPPPEN lpPPen; | |||
| LPPBRUSH lpPBrush; | |||
| LPDRAWMODE lpDrawMode; | |||
| LPRECT lpClipRect; |
The OS_PIE style specifies that the Output function draws an arc and two line segments that connect the endpoints of the arc to the center of the arc's bounding rectangle. Since the resulting figure is closed, Output fills the figure as well as draws the border. GDI calls this function when an application calls the Pie function (GDI.26).
A graphics driver must support the OS_PIE style if the CC_PIE value is set in the dpCurves member of the GDIINFO structure.
lpDestDev
Points to a PDEVICE or PBITMAP structure specifying the destination device or bitmap.
lpPoints
Points to an array containing five POINT structures. The elements of the array are defined as follows.
| 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
Points to a PPEN structure specifying the physical pen to draw the arc and line segments.
lpPBrush
Points to a PBRUSH structure specifying the brush to fill the figure.
lpDrawMode
Points to a DRAWMODE structure containing drawing information to draw the border and fill the figure.
lpClipRect
Points to a RECT structure containing coordinates for the clipping rectangle. If the lpClipRect parameter is NULL, the clipping rectangle is the entire display surface.
The return value is 1 if the function draws the figure. Otherwise, it is zero if the function encounters an unrecoverable error. The return value is -1 if the function cannot draw the specified figure and wants GDI to simulate it.
Output draws the pie-shaped figure 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.
Output draws the two line segments from the endpoints of the arc to the point at the center of the bounding rectangle.
Output(OS_ARC), Output(OS_CHORD)