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获取ACAD背景色的两种方案：

  • 在这种情况下，我们可以使用函数**unsigned long acedGetRGB(int color);** 使用参数 0 来获取背景颜色。
  • 另一种选择是使用 acedGetCurrentColors 函数，您可以从中获取 dwGfxModelBkColor 和 dwGfxLayoutBkColor 并（取决于tilemode值）使用您需要的。

acedGetRGB

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void CWHASSET::drawWipeOut(AcDbExtents exts, AcGiWorldDraw *mode)
{
    if (showFramFlag())
    {
        AcGePoint3d minPt, maxPt;
        minPt = exts.minPoint();
        maxPt = exts.maxPoint();
        AcGePoint3dArray wipePnts;
        wipePnts.append(minPt);
        wipePnts.append(AcGePoint3d(minPt.x, maxPt.y, minPt.z));
        wipePnts.append(maxPt);
        wipePnts.append(AcGePoint3d(maxPt.x, minPt.y, maxPt.z));
        wipePnts.append(minPt);
        Adesk::UInt32 lColor = acedGetRGB(0);
        //UInt32需要转化成rgb数据
        int R = 0xFF & lColor;
        int G = 0xFF00 & lColor;
        G >>= 8;
        int B = 0xFF0000 & lColor;
        B >>= 16;AcCmEntityColor cmColor;
        cmColor.setRGB(R, G, B);
        mode->subEntityTraits().setTrueColor(cmColor);
        mode->subEntityTraits().setFillType(kAcGiFillAlways);
        mode->geometry().polygon(wipePnts.length(), wipePnts.asArrayPtr());
    }
}

acedGetCurrentColors

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void CWHASSET::drawWipeOut(AcDbExtents exts, AcGiWorldDraw *mode)
{
    if (showFramFlag())
    {
        AcGePoint3d minPt, maxPt;
        minPt = exts.minPoint();
        maxPt = exts.maxPoint();
        AcGePoint3dArray wipePnts;
        wipePnts.append(minPt);
        wipePnts.append(AcGePoint3d(minPt.x, maxPt.y, minPt.z));
        wipePnts.append(maxPt);
        wipePnts.append(AcGePoint3d(maxPt.x, minPt.y, maxPt.z));
        wipePnts.append(minPt);
        AcColorSettings colorSetings; 
        acedGetCurrentColors(&colorSetings);
        AcCmEntityColor bgColor;
        if (!mode->context()->isPlotGeneration())
        {
            COLORREF rgbColor = (COLORREF)colorSetings.dwGfxModelBkColor;
            int red = rgbColor & 255;
            int green = rgbColor >> 8 & 255;
            int blue = rgbColor >> 16 & 255;
            bgColor.setRed(red);
            bgColor.setBlue(blue);
            bgColor.setGreen(green);
            mode->subEntityTraits().setTrueColor(bgColor);
        }
        else
        {
            COLORREF rgbColor = (COLORREF)colorSetings.dwGfxLayoutBkColor;
            int red = rgbColor & 255;
            int green = rgbColor >> 8 & 255;
            int blue = rgbColor >> 16 & 255;
            bgColor.setRed(red);
            bgColor.setBlue(blue);
            bgColor.setGreen(green);
            mode->subEntityTraits().setTrueColor(bgColor);
        }

        mode->subEntityTraits().setFillType(kAcGiFillAlways);
        mode->geometry().polygon(wipePnts.length(), wipePnts.asArrayPtr());
    }
}