If i want to use 2 variable to calculation, How to write the correct code???? Topic is solved

[Lo4438]

Code: Select all

x1 := v1 - v2
; v1 is 74
;v2 is 80
MsgBox, % x1

[Mod edit: Fixed [code][/code] tags.]



;the Message box is empty.

[Xtra]

Code: Select all

v1 := 74
v2 := 80
x1 := v1 - v2

MsgBox, % x1

[Lo4438]

Code: Select all

#Include uia.ahk
$u:=new IUIAutomation
$e:=new IUIAutomationElement
$c:=new IUIAutomationCondition
$r:=new IUIAutomationCacheRequest
$t:=new IUIAutomationTreeWalker

^t::
Loop 1
{
Element1 := $u.ElementFromPoint(586|255<<32)
v1 := $e.(Element1).CurrentName() . "`n"  ;v1 is a number 

Element2 := $u.ElementFromPoint(599|255<<32)
v2 := $e.(Element2).CurrentName() . "`n"  ;v2 is a number 
x1 := v1 - v2
MsgBox, %x1%
}
Return 

MsgBox is empty

[gregster]

Numbers don't have newline `n-characters at their end. If you need those for something different later, how about you concatenate them after doing the calculation, for eg with .= :

Code: Select all

v1 := 74 
v2 := 80 
x1 := v1 - v2
msgbox % x1
v1 .= "`n"
v2 .= "`n"
msgbox % v1 v2 "third line"

[Lo4438]

Thanks for your help.
I'm the beginner for ahk

v1 & v2，they will change to other numbers ever second
How to write the correct code?

[neovis]

It seems to contain non-numeric characters. Try to remove white spaces.

Code: Select all

v1 := " 74 "
v2 := " 80 "

; strip white spaces
v1 := Trim(v1, " `t`r`n") 
v2 := Trim(v2, " `t`r`n")

x1 := v1-v2
MsgBox % x1

or

Code: Select all

v1 := RegExReplace(v1, "\D")
v2 := RegExReplace(v2, "\D")

[Lo4438]

neovis, done
It works.