Retrieves the outline curve or bitmap for an outline character in the current font.
DWORD GetGlyphOutline( UINT nChar, UINT nFormat, LPGLYPHMETRICS lpgm, DWORD cbBuffer, LPVOID lpBuffer, const MAT2* lpmat2 ) const;
An application can rotate characters retrieved in bitmap format by specifying a 2-by-2 transformation matrix in the structure pointed to by lpmat2.
A glyph outline is returned as a series of contours. Each contour is defined by a TTPOLYGONHEADER structure followed by as many TTPOLYCURVE structures as are required to describe it. All points are returned as POINTFX structures and represent absolute positions, not relative moves. The starting point given by the pfxStart member of the TTPOLYGONHEADER structure is the point at which the outline for a contour begins. The TTPOLYCURVE structures that follow can be either polyline records or spline records. Polyline records are a series of points; lines drawn between the points describe the outline of the character. Spline records represent the quadratic curves used by TrueType (that is, quadratic b-splines).