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Tekl
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PostPosted: May 2nd, 2007, 3:48 pm 
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But is there a general way to use Methods? I don't understand how to use CoHelper.

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Sean
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PostPosted: May 2nd, 2007, 4:11 pm 
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Tekl wrote:
But is there a general way to use Methods? I don't understand how to use CoHelper.

Sure. I may try it if you send me the TypeLib file.
Or just tell me where I can download the file.


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Tekl
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PostPosted: May 2nd, 2007, 4:26 pm 
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What do you mean? A dll-file? There are lots of files.

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Sean
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PostPosted: May 2nd, 2007, 4:38 pm 
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Tekl wrote:
What do you mean? A dll-file? There are lots of files.

OK, I found the installer and extracted it. The needed file turned out to be iTunes.exe.
Here is the code.

Code:
#Include CoHelper.ahk

CoInitialize()

CLSID_iTunesApp := "{DC0C2640-1415-4644-875C-6F4D769839BA}"
 IID_IiTunes    := "{9DD6680B-3EDC-40DB-A771-E6FE4832E34A}"

piT := CreateObject(CLSID_iTunesApp, IID_IiTunes)

DllCall(VTable(piT,11), "Uint", piT)         ; Play
DllCall(VTable(piT, 9), "Uint", piT)         ; NextTrack

Release(piT)

CoUninitialize()


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Tekl
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PostPosted: May 3rd, 2007, 5:48 am 
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Big Thanks Sean, that helps me a lot.

Can you tell me how you get the values? Especially the values for Play and NextTrack.

Tekl

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Sean
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PostPosted: May 3rd, 2007, 5:56 am 
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Tekl wrote:
Can you tell me how you get the values? Especially the values for Play and NextTrack.

I used oleview.exe/tlb.exe, mentioned here:
http://www.autohotkey.com/forum/viewtop ... 7&start=15

I used File -> View TypeLib/Open menu there, so I didn't have to actually install iTunes.


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Tekl
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PostPosted: May 3rd, 2007, 10:58 am 
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Thanks. That's helpful. Is the Codeview of TLB the only way to get the VTable-values?

Another problem: How to get Values/Results? This does not work:

RESULT := DllCall(VTable(piT, 35), "Uint", piT) ; get_SoundVolume

I also tried:

DllCall(VTable(piT, 35), "Uint", piT, "Uint", RESULT) ; get_SoundVolume

Setting the Volume works this way:

DllCall(VTable(piT, 36), "Uint", piT, "Uint", VOLUME) ; set_SoundVolume

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Sean
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PostPosted: May 3rd, 2007, 1:17 pm 
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Tekl wrote:
Thanks. That's helpful. Is the Codeview of TLB the only way to get the VTable-values?

Good, you adapted fastly.
You can infer the indices from the vtable offsets or the ordinal positions.

Quote:
DllCall(VTable(piT, 35), "Uint", piT, "Uint", RESULT) ; get_SoundVolume

I think it is:

Code:
DllCall(VTable(piT, 35), "Uint", piT, "UintP", Volume)


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Tekl
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PostPosted: May 3rd, 2007, 1:37 pm 
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Sean, you made my day. Big thanks!

For interested people here some important values:

Code:
DllCall( VTable( piT, 11 ), "Uint", piT ) ; Play
DllCall( VTable( piT, 14 ), "Uint", piT ) ; PreviousTrack
DllCall( VTable( piT, 9  ), "Uint", piT ) ; NextTrack
DllCall( VTable( piT, 13 ), "Uint", piT ) ; PlayPause
DllCall( VTable( piT, 16 ), "Uint", piT ) ; Rewind
DllCall( VTable( piT, 8  ), "Uint", piT ) ; FastForward

; Volume Up
DllCall( VTable( piT, 35 ), "Uint", piT, "UintP", PlayerVol ) ; get_SoundVolume
PlayerVol := PlayerVol + VolAddSub
DllCall( VTable( piT, 36 ), "Uint", piT, "Uint", PlayerVol )  ; set_SoundVolume

; Volume Down
DllCall( VTable( piT, 35 ), "Uint", piT, "UintP", PlayerVol ) ; get_SoundVolume
PlayerVol := PlayerVol - VolAddSub
DllCall( VTable( piT, 36 ), "Uint", piT, "Uint", PlayerVol )  ; set_SoundVolume

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Sean
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PostPosted: May 3rd, 2007, 2:02 pm 
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Tekl wrote:
Sean, you made my day. Big thanks!

You're welcome and I'm glad.
BTW, I don't know if iTunes registers itself to ROT or not, but I think it's worth trying.
If you need to connect to the already running iTunes you may try the following, instead of CreateObject():

Code:
piT := GetActiveObject("iTunes.Application")


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Tekl
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PostPosted: May 3rd, 2007, 2:33 pm 
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Location: Germany
Hi Sean,

iTunes seems not to register itself. Your suggestion does not work.

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Sean
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PostPosted: May 3rd, 2007, 3:02 pm 
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Tekl wrote:
iTunes seems not to register itself. Your suggestion does not work.

Ah, that's too bad. I thought it might be an essential feature...
Maybe, there could be some option to force a single instance of iTunes.
What happens if you run CreateObject() while iTune is already running?
Is another instance of iTunes opened, or, is it connected to the already running one?


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Tekl
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PostPosted: May 3rd, 2007, 3:24 pm 
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It is connected to the already running iTunes. I didn't know that creating an object will launch iTunes as I check if iTunes is running with AHK commands.

In the COM SDK of iTunes they always have examples where the object is created before using.

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Sean
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PostPosted: May 3rd, 2007, 3:36 pm 
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Tekl wrote:
It is connected to the already running iTunes.

That's interesting. Thanks for informing me.


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tfcahm
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PostPosted: May 20th, 2007, 8:09 pm 
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Joined: May 20th, 2007, 7:48 pm
Posts: 48
What is the proper way to pass a Unicode string ByVal to COM?

The iTunes Create Folder method expects a Unicode string as input instead of a pointer to the string. Though it looks right to me, this code does not work. Any help is greatly appreciated.
Code:
#NoEnv
#Include CoHelper.ahk
CoInitialize()
CLSID_iTunesApp := "{DC0C2640-1415-4644-875C-6F4D769839BA}"
 IID_IiTunes    := "{9DD6680B-3EDC-40DB-A771-E6FE4832E34A}"
piT := CreateObject(CLSID_iTunesApp, IID_IiTunes)

sFldr := "MyNewFldr"
Ansi2Unicode(sFldr, wFldr)
DllCall(VTable(piT, 84), "str", wFldr, "UintP", pPlist)  ; Create Folder

Release(piT)
CoUninitialize()


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