Help understanding _GUICtrlComboBox_AutoComplete

[Maffe811]

http://www.autoitscript.com/autoit3/docs...ctions/_GUICtrlComboBox_AutoCo

The link above is to the function im having trouble with.

I understand everything until the _Edit_Changed function

What does _GUICtrlComboBox_AutoComplete do ?

"AutoComplete a ComboBox edit control"

But what do you need the WM_COMMAND func for then?

Is the WM_COMMAND func listening for changes?

And all this:

#forceref $hWnd, $iMsg
    Local $hWndFrom, $iIDFrom, $iCode, $hWndCombo
    If Not IsHWnd($hCombo) Then $hWndCombo = GUICtrlGetHandle($hCombo)
    $hWndFrom = $ilParam
    $iIDFrom = BitAND($iwParam, 0xFFFF) ; Low Word
    $iCode = BitShift($iwParam, 16) ; Hi Word
    Switch $hWndFrom
        Case $hCombo, $hWndCombo
            Switch $iCode

Like i don't understand what most of it does/contain.

I usually understand after reading the help file and if that doesn't work the example does the rest.

In this case the text doesn't say much and the help is just confusing.

How can i make this as compact as possible?

And also will the GUIRegisterMsg get messed up if i write stuff inhere:

Do
Until GUIGetMsg() = $GUI_EVENT_CLOSE

Im making a League of Legends counter pick list.

So it will be extracting data from a file (most likely an excel file) and then it will list all the names there.

Then you start writing the name for whoever you were looking for and it will list who you counter OR you can toggle a check box and see who counters you.

Im just walking into something i don't really understand

[Melba23]

Maffe811,

Like i don't understand what most of it does/contain

Then I suggest reading the GUIRegisterMsg tutorial in the Wiki to get it all explained.

Im making a League of Legends counter pick list

You have been here long enough to have read the Forum Rules - can you assure me that this does not interact with the game and is something entirely separate?

M23

[Maffe811]

Maffe811,

Then I suggest reading the GUIRegisterMsg tutorial in the Wiki to get it all explained.

Only thing i didn't look up

You have been here long enough to have read the Forum Rules - can you assure me that this does not interact with the game and is something entirely separate?

M23

Yes, its basicly this:

https://docs.google.com/spreadsheet/lv?hl=en_US]&key=0Aq-068L0cPIZdHdZR3JtaXlOdTZWQjJVb3FoUVZLM1E&toomany=true

But in a program instead of just a big sheet.

So it does not interact with the program in any way, ive been here long enough to see what happens with thoose who try game automation.

Also the list linked to above only supports checking who you should pick to counter champion "X".

Not who champion "X" would counter.

So i would create the possibility to check both ways, not only one way like the list.

[Melba23]

So it does not interact with the program in any way

Delighted to hear it!

Please ask if you have any questions after reading the tutorial and I shall do my best to clarify - although as I wrote it that might be a bit difficult!

M23

[Maffe811]

That was incredibly educating!

I still got some questions though.

Local $iIDFrom = BitAND($wParam, 0xFFFF) ; LoWord - this gives the control which sent the message

I don't fully understand what BitAND does here, but i asume it gets the name of the controll?

But what is 0xFFFF

and what do you want $wParam to be ?

Local $iCode = BitShift($wParam, 16)     ; HiWord - this gives the message that was sent

This gets something out of $wParam? The thing that has changed?

And then later checks it against this:

If $iCode = $EN_CHANGE Then ; If we have the correct message

And $EN_CHANGE is something that have changed and if its = to the change happened with our thing then it continues on to:

Switch $iIDFrom ; See if it comes from one of the inputs

And if $iIDForm is equal to your input it will do whatever you have as Do something

Case $hInput1
    ;Do something

What is, if anything is, correct?

[Melba23]

Maffe811,

Stand by for short course in Bit arithmetic.

$wParam is 8 bytes wide - think "12345678", although each digit can actually be 0-F. Sometimes the value in $wParam is divided into 2 separate 4 byte values - the "High" and the "Low" words. In the example above, these are: High = "1234"; Low = "5678". It is a clever way of passing 2 values within a single parameter.

So how to separate these values? We could use _WinAPI_HiWord and _WinAPI_LoWord, but that would mean including WinAPI.au3. So we manipulate the value ourselves.

High word first: here we just shift the the whole parameter to the right:

Local $iCode = BitShift($wParam, 16)

Remember that each byte has 4 bits (Hex 0-F = Binary 0000 - 1111) - so if we shift the whole number 4x4 bits to the right, we get just "1234" - the "High" part.

Now the Low word: here we use another of the Bit operators to blank out the "High" bytes:

Local $iIDFrom = BitAND($wParam, 0xFFFF)

BitAND says only keep bit where there is a value in both of the operators - in our case we get this:

12345678
0000FFFF   - remember that F = 1111
=
00005678   - as only the final 4 bytes can possibly have 1's set in both values

So basically we keep all the Low bytes and set all the High bytes to zero - the result is the Low word.

Still with me? I will come back with the second part after the Germany/Portugal match has finished.

M23

Edited June 9, 2012 by Melba23
Typo

[Melba23]

Maffe811,

Part 2.

The 2 words we extract from $wParam are the Code for that message and the IDFrom telling us the ControlID of the control which sent it.

$EN_CHANGE is a message sent by an Edit control (hence the E prefix) when something has changed within it. This is useful when looking to see if the user has entered something when we need to act upon it - we can use IDFrom[/i to check which edit control sent the message.

Here is a good example of both of them being used - see if you can follow it now.

M23

[Maffe811]

You made it all sound so simple!

Now with _WinAPI_LoWord, _WinAPI_HiWord and the arithmetic lesson it was easier to understand what the BitAnd and BitShift did.

But i think you covered everything i was wondering about!

Thank you so much for your time and help!

Edited June 9, 2012 by Maffe811

[Melba23]

Maffe811,

My pleasure.

M23