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entropic
PostPosted: September 1st, 2009, 2:29 am 
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Posts: 181
This has been discussed on the forum before but I think it's worth bringing up again.

You can make a hotkey that calls a function, like this:

Code:
!a::MyFunction()


but you can't do this

Code:
Hotkey, !a, MyFunction()


instead you have to do something like this

Code:
Hotkey, !a, MyLabel

MyLabel:
    MyFunction()
Return



Also, any ideas on how difficult it would be to code?


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Guessed
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PostPosted: September 1st, 2009, 7:01 am 
That's an interesting perspective. However, !a::MyFunction() is actually a label, its first line of code and a "hotkey instruction" (call this label when !a is pressed) in one.

I think it would be difficult to code.


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engunneer
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PostPosted: September 1st, 2009, 8:34 am 
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+1

Also, it'd be nice if Gui gLables caoud call functions (or make a new fFunction() option)

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[VxE]
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PostPosted: September 1st, 2009, 11:18 am 
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You can script a 'lookup table' which holds hotkey names along with their associated function. Then, assign all hotkeys to one label, which gets the function name from the lookup table (using A_ThisHotkey) and calls the function dynamically.

A similar setup could work for gui g-labels, though any workaround would be much less elegant than simply specifying a function in the gui control's options (or instead of the hotkey label).

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engunneer
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PostPosted: September 1st, 2009, 1:34 pm 
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A good example of that is the MenuHandler example in the Menu docs.

I just AHK could be a little more function centric sometimes.

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entropic
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PostPosted: September 1st, 2009, 4:33 pm 
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[VxE] wrote:
You can script a 'lookup table' which holds hotkey names along with their associated function. Then, assign all hotkeys to one label, which gets the function name from the lookup table (using A_ThisHotkey) and calls the function dynamically.

A similar setup could work for gui g-labels, though any workaround would be much less elegant than simply specifying a function in the gui control's options (or instead of the hotkey label).


Lol, I use a similar workaround.

I have 10 hotkeys that are registered at runtime with the Hotkey command, they all send different key combinations to a window, and I have a function to send whatever keys I want to the window.

MyHotkey(1-10) is the Hotkeys
KeysToSend(1-10) is the corresponding keys to send

Code:
SendSomeKeys:
    Loop, 10   ; Loop through the ten possible hotkeys
    {
        TempHotkey := vMyHotkey%A_Index%           ;vMyHotkey(1-10) stores the Hotkey combinations       
        If (TempHotkey = A_ThisHotkey)
        {
            TempKeysToSend := vKeysToSend%A_Index%  ;vKeysToSend(1-10) stores what keys will be sent
            TempKeysToSend = "%TempKeysToSend%"     ;In order for it to work correctly it must be enclosed in quotes
            SendToMyWindow(TempKeysToSend)
            Break                                   ;Break exits the Loop
        }

    }
return


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shajul
PostPosted: June 7th, 2011, 8:29 am 
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Joined: September 15th, 2006, 10:25 am
Posts: 567
entropic wrote:
This has been discussed on the forum before but I think it's worth bringing up again.

You can make a hotkey that calls a function, like this:

Code:
!a::MyFunction()


but you can't do this

Code:
Hotkey, !a, MyFunction()


instead you have to do something like this

Code:
Hotkey, !a, MyLabel

MyLabel:
    MyFunction()
Return



Also, any ideas on how difficult it would be to code?


Bump. I am not sure if i have missed any recent discussion on this.

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sumon
PostPosted: June 7th, 2011, 9:20 am 
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shajul wrote:
Bump. I am not sure if i have missed any recent discussion on this.


Although the workaround works (obviously), it is not as elegant. I think an improvement on this part would help both novices and pros alike.

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Solar
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PostPosted: June 7th, 2011, 5:43 pm 
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Joined: May 3rd, 2009, 7:16 pm
Posts: 345
Location: OH, USA
Label names can contain brackets. Thus, there's no way to distinguish between label names and function names:

Code:
Hotkey, !a, MyFunction()
return

MyFunction():
   MsgBox Oops, I'm a label. Better luck next time.
return

This could happen for v2 but it wouldn't be possible for v1 without breaking backward compatibility.


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tidbit
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PostPosted: June 7th, 2011, 6:21 pm 
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Joined: March 10th, 2008, 12:55 am
Posts: 1907
Location: Minnesota, USA
Backward compatibility has been broken for many things already.

and well, there could be function detection. if string (label) contains a ( and ), do function stuff instead.
same with menus.

as for GUI's, fFunction() would be nice.

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Solar
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PostPosted: June 7th, 2011, 6:43 pm 
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Joined: May 3rd, 2009, 7:16 pm
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Location: OH, USA
tidbit wrote:
Backward compatibility has been broken for many things already.

Not many things. Just [ ] and ? characters in variable names and syntax validation. Which are both justified and very minor changes. I'm speaking purely from an ANSI perspective as Unicode comes with it's own costs.

tidbit wrote:
and well, there could be function detection. if string (label) contains a ( and ), do function stuff instead.
same with menus.

Well, it would break compatibility for anyone using ( or ) in their label names. In this case, I don't believe it's justified to break compatibility. Unless somehow adding the ability to pass parameters along with the function call, it would have no benefit over the workarounds mentioned above. I don't think a few extra lines are going to kill you.


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fragman
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PostPosted: June 8th, 2011, 4:21 pm 
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Joined: October 13th, 2009, 10:09 pm
Posts: 1389
I don't think those characters should have been allowed in label names at the first place because they have other meanings.


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