自学教程：C++ GdipFree函数代码示例

GpStatusgdip_adjust_arrowcap_destroy (GpCustomLineCap *cap){	if (!cap)		return InvalidParameter;	GdipFree (cap);	return Ok;}

GpStatus WINGDIPAPI GdipCreatePathGradient(GDIPCONST GpPointF* points,    INT count, GpWrapMode wrap, GpPathGradient **grad){    COLORREF col = ARGB2COLORREF(0xffffffff);    if(!points || !grad)        return InvalidParameter;    if(count <= 0)        return OutOfMemory;    *grad = GdipAlloc(sizeof(GpPathGradient));    if (!*grad) return OutOfMemory;    (*grad)->pathdata.Count = count;    (*grad)->pathdata.Points = GdipAlloc(count * sizeof(PointF));    (*grad)->pathdata.Types = GdipAlloc(count);    if(!(*grad)->pathdata.Points || !(*grad)->pathdata.Types){        GdipFree((*grad)->pathdata.Points);        GdipFree((*grad)->pathdata.Types);        GdipFree(*grad);        return OutOfMemory;    }    memcpy((*grad)->pathdata.Points, points, count * sizeof(PointF));    memset((*grad)->pathdata.Types, PathPointTypeLine, count);    (*grad)->brush.lb.lbStyle = BS_SOLID;    (*grad)->brush.lb.lbColor = col;    (*grad)->brush.lb.lbHatch = 0;    (*grad)->brush.gdibrush = CreateSolidBrush(col);    (*grad)->brush.bt = BrushTypePathGradient;    (*grad)->centercolor = 0xffffffff;    (*grad)->wrap = wrap;    (*grad)->gamma = FALSE;    (*grad)->center.X = 0.0;    (*grad)->center.Y = 0.0;    (*grad)->focus.X = 0.0;    (*grad)->focus.Y = 0.0;    return Ok;}

GpStatuscairo_DrawString (GpGraphics *graphics, GDIPCONST WCHAR *stringUnicode, int length, GDIPCONST GpFont *font, GDIPCONST RectF *rc, 	GDIPCONST GpStringFormat *format, GpBrush *brush){	cairo_matrix_t SavedMatrix;	GpStringFormat *fmt;	GpStringDetailStruct *StringDetails;	WCHAR *CleanString;	GpDrawTextData data; /* avoid recomputation of stuff done while measuring */	int StringLen = length;	GpStatus status = AllocStringData (&CleanString, &StringDetails, length);	if (status != Ok)		return status;	/* a NULL format is valid, it means get the generic default values (and free them later) */	if (!format) {		GdipStringFormatGetGenericDefault ((GpStringFormat **)&fmt);	} else {		fmt = (GpStringFormat *)format;	}	/* is the following ok ? */	cairo_get_font_matrix (graphics->ct, &SavedMatrix);	status = MeasureString (graphics, stringUnicode, &StringLen, font, rc, fmt, brush, NULL, NULL, NULL, CleanString, StringDetails, &data);	if ((status == Ok) && (StringLen > 0)) {		status = DrawString (graphics, stringUnicode, StringLen, font, rc, fmt, brush, CleanString, StringDetails, &data);	}	/* Restore matrix to original values */	cairo_set_font_matrix (graphics->ct, &SavedMatrix);	/* Cleanup */	GdipFree (CleanString);	GdipFree (StringDetails);	/* we must delete the default stringformat (when one wasn't provided by the caller) */	if (format != fmt)		GdipDeleteStringFormat (fmt);	return status;}

/***************************************************************************** * GdipDeleteFontFamily [[email
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