Imagick inside how to set fontweight, with Setfontweight useless, is and font file related? Font file is TTF

 $text_img = new ImagickDraw(); $text_img->setFont($font); $text_img->setGravity(Imagick::GRAVITY_NORTH); $text_img->setFillColor(new ImagickPixel($color)); $text_img->setFontSize($font_size); $text_img->setFontWeight(100);   

   这样设置字体weight没用，用的ttf的字体，写的出来的图片没用效果，weight都是一样的。。。是什么问题

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 $text_img = new ImagickDraw(); $text_img->setFont($font); $text_img->setGravity(Imagick::GRAVITY_NORTH); $text_img->setFillColor(new ImagickPixel($color)); $text_img->setFontSize($font_size); $text_img->setFontWeight(100);   

   这样设置字体weight没用，用的ttf的字体，写的出来的图片没用效果，weight都是一样的。。。是什么问题

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