About convert dwg to png background and line color

[pujols]

Hi, I try convert dwg to png,
sample code:

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CADImage cadImage = CADImage.CreateImageByExtension(sourceFile);
cadImage.LoadFromFile(sourceFile);
DRect boundaryRectangle = new DRect(left, top, width, height);
Rectangle rect = new Rectangle(left, top, width, height);
cadImage.SaveToFile(outFileName, ImageFormat.Png, boundaryRectangle, rect);

the result show white background and black line as follows

img2.gif (101.12 KiB) Viewed 14525 times

dwg file in DWG TrueView show black background and white line as follows

img1.png (252.28 KiB) Viewed 14525 times

I want to export png that all colors are same as show in DWG TrueView

I try add

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cadImage.BackgroundColor = Color.Black;

the result png background color is black, and line is still black.
how do I export png that all colors as same as dwg in DWG TrueView?
is CAD.NET auto change line color according to background color?

[support]

Hello,

CAD .NET doesn't change the objects color automatically, depending on the background color. You will need to adjust the default color for objects and the background color before saving to a file, as follows:

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cadImage.Painter.Settings.BackgroundColor = Color.Black.ToArgb();
cadImage.Painter.Settings.DefaultColor = Color.White.ToArgb();

Mikhail