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question about "-1" parameter in functions call

3 posts in this topic

In some examples of the functions reference I see that where is required a ControlID parameter, the function is instead called with a -1 value. What this "-1" means?

Thanks


small minds discuss people average minds discuss events great minds discuss ideas.... and use AutoIt....

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Pincopanco,

It means the "last control created": :mellow:

#include <GUIConstantsEx.au3>

$hGUI = GUICreate("Test", 500, 500)

GUICtrlCreateLabel("Label 1", 10, 10, 200, 20)
GUICtrlCreateLabel("Label 2", 10, 50, 200, 20)
GUICtrlSetColor(-1, 0xFF0000)                         ; And so we change the colour of the second label

GUISetState()

While 1
    Switch GUIGetMsg()
        Case $GUI_EVENT_CLOSE
            Exit
    EndSwitch
WEnd

M23


Any of my own code posted anywhere on the forum is available for use by others without any restriction of any kind._______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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@Melba23

OK,

many thanks for the clarification!

Greetings!


small minds discuss people average minds discuss events great minds discuss ideas.... and use AutoIt....

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