cpdf_setgray_stroke
(PHP 3 >= 3.0.8, PHP 4, PECL)
cpdf_setgray_stroke -- Sets drawing color to gray value
Description
bool
cpdf_setgray_stroke ( int pdf_document, float gray_value )
The cpdf_setgray_stroke() function sets the current
drawing color to the given gray value. 如果成功则返回 TRUE，失败则返回 FALSE。
See also cpdf_setrgbcolor_stroke().