Prints output directly to the specified screen under format control.
#include <screen.h> int vscreenprintf ( scr_t, scr const char *format, va_list args);
(IN) Specifies which screen receives the output.
(IN) Points to the format specification string. See Print Format Control Strings.
(IN) Specifies a variable argument list. The number of arguments is determined by the format string.
Returns the number of characters written.
The value for the scr parameter can be obtained from many sources. The following are some of the common ones: