AntiAlias failed when draw string with certain angle in GDI+

I am using the following code to draw Strings. In GDI+

Graphics tempFontGr(XXX);
Matrix* myPathMatrix = NULL;
 myPathMatrix->Rotate(GetDCAngle(), MatrixOrderPrepend);
cantempFontGr.SetTransform(myPathMatrix);
tempFontGr.SetInterpolationMode(InterpolationModeHighQuality);
tempFontGr.SetSmoothingMode(SmoothingModeAnt开发者_如何学CiAlias);
tempFontGr.DrawString(m_sWords, -1, tempFont.get(), tempRec, NULL, m_pBrush.get());

It is anoying that the string drawn have alias. Is there any method to remove the alias? Many thanks!

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SetSmoothingMode applies to lines and curves. Try SetTextRenderingHint