topic Re: Convert Autocad Color Index TO/FROM ARGB in .NET Forum

Convert Autocad Color Index TO/FROM ARGB

Anonymous — Tue, 05 Jul 2016 20:35:50 GMT

Hi, i need store Layers colors outside Autocad and return a new color.

I want a example to convert aci to/from System.Drawing.Color ARGB.

thanks

Re: Convert Autocad Color Index TO/FROM ARGB

rkmcswain — Tue, 05 Jul 2016 21:55:33 GMT

Does this help any? Check the link in post 4 also.

http://forums.autodesk.com/t5/net/problems-with-rgb-and-color-index/td-p/3715706

Re: Convert Autocad Color Index TO/FROM ARGB

Anonymous — Wed, 06 Jul 2016 17:55:29 GMT

I try solutions at this post, but no one work well to me.

I implement this code to convert to System.drawing.color, and send to external routines.

private System.Drawing.Color AcadColorAciToDrawingColor(Autodesk.AutoCAD.Colors.Color color)
{
byte aci = Convert.ToByte(color.ColorIndex);
int aRGB = EntityColor.LookUpRgb(aci);
byte[] ch = BitConverter.GetBytes(aRGB);
if (!BitConverter.IsLittleEndian) {
Array.Reverse(ch);
}
int r = ch[2];
int g = ch[1];
int b = ch[0];

return System.Drawing.Color.FromArgb(r,g, b);
}

thanks