Intel® Fortran Compiler 18.0 Developer Guide and Reference
Graphics Function: Gets the current line width or the line width set by the last call to SETLINEWIDTHQQ.
USE IFQWIN
result = GETLINEWIDTHQQ( )
The result is of type INTEGER(4). It contains the current width of the line in pixels.
If there is no call to SETLINEWIDTHQQ in the program (or on that particular graphics window), it returns 1. (The default width of a line drawn by any graphics routine is 1 pixel.)