Output(OS_ELLIPSE)

	WORD Output(lpDestDev, OS_ELLIPSE, 2, lpPoints, lpPPen, lpPBrush, lpDrawMode, lpClipRect)
	LPPDEVICE lpDestDev;
	LPPOINT lpPoints;
	LPPPEN lpPPen;
	LPPBRUSH lpPBrush;
	LPDRAWMODE lpDrawMode;
	LPRECT lpClipRect;

The OS_ELLIPSE style specifies that the Output function draws an ellipse. 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 Ellipse function (GDI.24).

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

Parameters

lpDestDev

Points to a PDEVICE or PBITMAP structure specifying the destination device or bitmap.

lpPoints

Points to an array containing two 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.

lpPPen

Points to a PPEN structure specifying the physical pen to draw the border.

lpPBrush

Points to a PBRUSH structure specifying the physical brush to fill the ellipse.

lpDrawMode

Points to a DRAWMODE structure containing information when drawing the border and filling the interior.

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.

Return Value

The return value is 1 if the function draws the ellipse. Otherwise, it is 0 if the function encounters an unrecoverable error. The return value is -1 if the function cannot draw the specified circle and wants GDI to simulate it.

Comments

Output draws the ellipse by first filling the interior then drawing the border. The center of the ellipse is at the center of the bounding rectangle; the semi-major and semi-minor axes of the ellipse are equal to half the width and height of the rectangle.