write_string — Print text in a window.
write_string prints String in the output window starting at the current cursor position. The output text has to fit within the right window boundary (the width of the string can be queried by get_string_extents).
The font currently assigned to the window will used. The text cursor is positioned at the end of the text.
write_string can output all three types of data used in HALCON . The conversion to a string is guided by the following rules:
strings are not converted.
integer numbers are converted without any spaces before or after the number.
floating numbers are printed (if possible) with a floating point and without an exponent.
the resulting strings are concatenated without spaces.
For buffering of texts see set_system with the flag 'flush_graphic'.
If clipping at the window boundary is desired, exceptions can be switched off by set_check('~text').
Tuple of output values (all types).
Default value: 'hello'
write_string returns 2 (H_MSG_TRUE) if the window is valid and the output text fits within the current line (see set_check). Otherwise an exception is raised.
open_window, set_font, get_string_extents
set_tposition, get_string_extents, set_font, set_system, set_check