wexist( ) 函数示例

define window wscreen1 from 10,10 to 20,69
define window wscreen2 from 1,0 to 19,79
clear
? wexist('wscreen1')  && 显示 .t.
store 'wscreen2' to gcwinname
? wexist('win_name')  && 显示 .f.
? wexist(gcwinname)  && 显示 .t.
release windows wscreen1, wscreen2