Autohotkey - 每秒递减一次变量

Question

我不是AutoHotKey大师，如果变量每秒超过0，我就会遇到问题：

Loop
{
If spaceFreq > 0
    spaceFreq--
If returnFreq > 0
    returnFreq--
Sleep, 1000
}

这个脚本有什么问题？变量没有减少。

Answer 1

to decrement a value and store the result back in the same variable directly,
you must do
ex: Var := --x instead of Var := x--
because --x decrements X immediately and then assigns its value to Var
x-- increments X only after assigning the current value of X to Var consequently, 
not modifying the original variable, if no variable is specified.

阅读更多关于递减的here ... 我建议使用SetTimer，而不是循环和睡眠..

例如：

#Persistent
SetTimer, decrementlabel, 1000 ;1000 ms = 1 second
return

decrementlabel:
If spaceFreq > 0
   --spaceFreq
If returnFreq > 0
   --returnFreq
return