How to use AcDbMPolygon::setPatternColor?

By Philippe Leefsma

Q:

When I use the following code snippet, the polygon is still white (as default entity color):

AcCmColor acadcolor;

acadcolor.setRed(20);

acadcolor.setGreen(50);

acadcolor.setBlue(110);

AcDbMPolygon *pAcDb = new AcDbMPolygon();

pAcDb->appendMPolygonLoop(points, bulges, false); //append a loop

pAcDb->hatch()->setPattern(AcDbHatch::kPreDefined, "SOLID");

pAcDb->setPatternColor(acadcolor);

//post to database and close..

How do I set the color correctly?

A:

The first option is to call acadcolor.setColorMethod(AcCmEntityColor::kByColor) after you set Red, Green, Blue color.

The second option is to use setRGB() as shown:

acadcolor.setRGB(20,50,110);

After you use acadcolor properly, and then execute the LIST command, it displays the following:
Hatch pattern: SOLID
Fill color:  20,50,110