void SystemDraw::SetDrawPen(int width, Color color) {
...
	if(width != lastPen || color != lastPenColor) {
		static int penstyle[] = {
			PS_NULL, PS_SOLID, PS_DASH,
		#ifndef PLATFORM_WINCE
			PS_DOT, PS_DASHDOT, PS_DASHDOTDOT
		#endif
		};
		HPEN oldPen = actPen;
		actPen = CreatePen(width < 0 ? penstyle[-width - 1] : PS_SOLID,
			               width < 0 ? 0 : width, GetColor(color));
...
	}
}

void SystemDraw::SetLineStyle(int width) {
...
	if(width < PEN_SOLID) {
		static const char dash[] = { 18, 6 };
		static const char dot[] = { 3, 3 };
		static const char dashdot[] = { 9, 6, 3, 6 };
		static const char dashdotdot[] = { 9, 3, 3, 3, 3, 3 };
		static struct {
			const char *dash;
			int   len;
		} ds[] = {
			{ dash, __countof(dash) },
			{ dot, __countof(dot) },
			{ dashdot, __countof(dashdot) },
			{ dashdotdot, __countof(dashdotdot) }
		};
		int i = -(width - PEN_DASH);
		ASSERT(i >= 0 && i < 4);
		XSetDashes(Xdisplay, gc, 0, ds[i].dash, ds[i].len);
	}
	XSetLineAttributes(Xdisplay, gc, max(width, 1),
	                   width < PEN_SOLID ? LineOnOffDash : LineSolid, CapRound, JoinRound);
}

         if(yh >= 0 && yl < sz.cy) {
            int x = levelcx + levelcx * l.level + levelcx2 - org.x;
            //w.DrawRect(x, yl, 1, yh - yl, SColorShadow);
            for (int k = 0; k < (yh - yl); k += 2)
               w.DrawRect(x, yl + k, 1, 1, SColorShadow);

//...

      if(w.IsPainting(0, y, sz.cx, msz.cy) && msz.cy > 0) {
         //w.DrawRect(op.x, op.y, levelcx2, 1, SColorShadow);
         for (int k = 2; k < levelcx2; k += 2)
            w.DrawRect(op.x + k, op.y, 1, 1, SColorShadow);