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What is the difference ? local no local


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Hey teachers ;)

What is the difference between this..

Local $Gui1  = GUICreate("form1", 800, 600)
Local $Button1 = GUICtrlCreateButton("clickme",10,  10, 75, 25)

And this

$Gui1  = GUICreate("form1", 800, 600)
$Button1 = GUICtrlCreateButton("clickme",10,  10, 75, 25)

What local does?

I read the help file but i cant get it..

Edited by armoros

[font="verdana, geneva, sans-serif"] [/font]

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armoros, from the helpfile

Global = Forces creation of the variable in the Global scope
Local = Forces creation of the variable in the Local/Function scope

So, if you define a variable as Local, it is only defined for that scope. As an example, if you define a variable as Local within a Function, it is not available outside of that Function:

$x = "40"
_test()
_test2()

Func _test()
Local $y = "30"
MsgBox(0, "", $x & " & " & $y)
EndFunc

Func _test2()
MsgBox(0, "", $x & " & " & $y)
EndFunc

Func 2 is going to fail, because it doesn't "know" what $y is.

Edited by JLogan3o13

"Profanity is the last vestige of the feeble mind. For the man who cannot express himself forcibly through intellect must do so through shock and awe" - Spencer W. Kimball

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armoros,

You might find the Variables - using Global, Local and ByRef tutorial in the Wiki an interesting read. ;)

M23

Public_Domain.png.2d871819fcb9957cf44f4514551a2935.png Any of my own code posted anywhere on the forum is available for use by others without any restriction of any kind

Open spoiler to see my UDFs:

Spoiler

ArrayMultiColSort ---- Sort arrays on multiple columns
ChooseFileFolder ---- Single and multiple selections from specified path treeview listing
Date_Time_Convert -- Easily convert date/time formats, including the language used
ExtMsgBox --------- A highly customisable replacement for MsgBox
GUIExtender -------- Extend and retract multiple sections within a GUI
GUIFrame ---------- Subdivide GUIs into many adjustable frames
GUIListViewEx ------- Insert, delete, move, drag, sort, edit and colour ListView items
GUITreeViewEx ------ Check/clear parent and child checkboxes in a TreeView
Marquee ----------- Scrolling tickertape GUIs
NoFocusLines ------- Remove the dotted focus lines from buttons, sliders, radios and checkboxes
Notify ------------- Small notifications on the edge of the display
Scrollbars ----------Automatically sized scrollbars with a single command
StringSize ---------- Automatically size controls to fit text
Toast -------------- Small GUIs which pop out of the notification area

 

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JLogan3o13,

Lots of good tutorials in the Wiki - even if I say so myself as the author of quite a few of them. ;)

Public_Domain.png.2d871819fcb9957cf44f4514551a2935.png Any of my own code posted anywhere on the forum is available for use by others without any restriction of any kind

Open spoiler to see my UDFs:

Spoiler

ArrayMultiColSort ---- Sort arrays on multiple columns
ChooseFileFolder ---- Single and multiple selections from specified path treeview listing
Date_Time_Convert -- Easily convert date/time formats, including the language used
ExtMsgBox --------- A highly customisable replacement for MsgBox
GUIExtender -------- Extend and retract multiple sections within a GUI
GUIFrame ---------- Subdivide GUIs into many adjustable frames
GUIListViewEx ------- Insert, delete, move, drag, sort, edit and colour ListView items
GUITreeViewEx ------ Check/clear parent and child checkboxes in a TreeView
Marquee ----------- Scrolling tickertape GUIs
NoFocusLines ------- Remove the dotted focus lines from buttons, sliders, radios and checkboxes
Notify ------------- Small notifications on the edge of the display
Scrollbars ----------Automatically sized scrollbars with a single command
StringSize ---------- Automatically size controls to fit text
Toast -------------- Small GUIs which pop out of the notification area

 

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