PureBasic Forums - English

Posted: **Sun Jul 13, 2008 4:26 am**

Michael Korolev wrote:sfs_Get_VariantString() function is absent everywhere: in Droopy and in include file

Posted: **Sun Jul 13, 2008 11:12 am**

Well, I thought, you only needed something to learn, not full functional code, sorry

First about "sfs_" and "ax_":
I always put prefixes and mostly an URL to procs from other people, that helped me, to not get confused or problems with procs in additional libs my apps sometimes need.

Now some working code:

Code: Select all

;based on code from SFSxOI: http://www.purebasic.fr/english/viewtopic.php?t=30535

Procedure.S   sfs_Get_VariantString(*Variant.VARIANT)
  Protected String.S = ""

  If VariantChangeType_(*Variant, *Variant, 0, #VT_BSTR) = #S_OK
    String = PeekS(*Variant\bstrVal, -1, #PB_Unicode)
    VariantClear_(*Variant)
  Else
    Debug "VariantChangeType() failed!"
  EndIf

  ProcedureReturn String 
EndProcedure

Procedure.s    ax_Uni2Ansi(unicodestr.l) 
  ;user: aXend
  ;forum: http://www.purebasic.fr/english/viewtopic.php?t=16569
  lenA = WideCharToMultiByte_(#CP_ACP, 0, unicodestr, -1, 0, 0, 0, 0);
  ansistr.s = Space(lenA)
  If (lenA > 0)
    WideCharToMultiByte_(#CP_ACP, 0, unicodestr, -1, @ansistr, lenA, 0, 0);
  EndIf
  ProcedureReturn ansistr
EndProcedure 

Procedure.l   ugs_get_IMAPImediaType(driveletter.s)
DisableDebugger
Enumeration ;_#IMAPI_MEDIA_PHYSICAL_TYPE
  #IMAPI_MEDIA_TYPE_UNKNOWN = 0
  #IMAPI_MEDIA_TYPE_CDROM = $1
  #IMAPI_MEDIA_TYPE_CDR = $2
  #IMAPI_MEDIA_TYPE_CDRW = $3
  #IMAPI_MEDIA_TYPE_DVDROM = $4
  #IMAPI_MEDIA_TYPE_DVDRAM = $5
  #IMAPI_MEDIA_TYPE_DVDPLUSR = $6
  #IMAPI_MEDIA_TYPE_DVDPLUSRW = $7
  #IMAPI_MEDIA_TYPE_DVDPLUSR_DUALLAYER = $8
  #IMAPI_MEDIA_TYPE_DVDDASHR = $9
  #IMAPI_MEDIA_TYPE_DVDDASHRW = $a
  #IMAPI_MEDIA_TYPE_DVDDASHR_DUALLAYER = $b
  #IMAPI_MEDIA_TYPE_DISK = $c
  #IMAPI_MEDIA_TYPE_DVDPLUSRW_DUALLAYER = $0D
  #IMAPI_MEDIA_TYPE_HDDVDROM = $0E
  #IMAPI_MEDIA_TYPE_HDDVDR = $0F
  #IMAPI_MEDIA_TYPE_HDDVDRAM = $10
  #IMAPI_MEDIA_TYPE_BDROM = $11
  #IMAPI_MEDIA_TYPE_BDR = $12
  #IMAPI_MEDIA_TYPE_BDRE = $13
  #IMAPI_MEDIA_TYPE_MAX = $13
EndEnumeration

Interface IDiscMaster2 Extends IDispatch
  get__NewEnum(a)
  get_Item(index,value) 
  get_Count(a.l)
  get_IsSupportedEnvironment(value.l)
EndInterface

Interface IDiscRecorder2 Extends IDispatch
  EjectMedia()
  CloseTray()
  AcquireExclusiveAccess(a.l,b.s)
  ReleaseExclusiveAccess()
  DisableMcn()
  EnableMcn()
  InitializeDiscRecorder(a.l)
  get_ActiveDiscRecorder(value)
  get_VendorId(value)
  get_ProductId(value)
  get_ProductRevision(value)
  get_VolumeName(value)
  get_VolumePathNames(value) 
  get_DeviceCanLoadMedia(a.l)
  get_LegacyDeviceNumber(a.l)
  get_SupportedFeaturePages(a)
  get_CurrentFeaturePages(a)
  get_SupportedProfiles(a)
  get_CurrentProfiles(a)
  get_SupportedModePages(a)
  get_ExclusiveAccessOwner(value)
EndInterface

Interface IDiscFormat2 Extends IDispatch
  IsRecorderSupported(recorder.l, value.l)
  IsCurrentMediaSupported(recorder.l, value.l)
  get_MediaPhysicallyBlank(value.l)
  get_MediaHeuristicallyBlank(value.l)
  get_SupportedMediaTypes(value.l)
EndInterface

Interface IDiscFormat2Erase Extends IDiscFormat2
  put_Recorder(value)
  get_Recorder(value)
  put_FullErase(value)
  get_FullErase(value)
  get_CurrentPhysicalMediaType(value)
  put_ClientName(value.p-bstr)
  get_ClientName(value)
  EraseMedia()
EndInterface

Structure SAFEARRAYBOUND
  cElements.L  ; # of elements in the array dimension
  lLbound.L    ; Lower bounds of the array dimension
EndStructure

Structure SAFEARRAY
  cDims.W
  fFeatures.W
  cbElements.L
  cLocks.L
  pvData.L
  rgsabound.SAFEARRAYBOUND[60]
EndStructure

pp.variant
pp\vt = #VT_BSTR

Variant.VARIANT
*VariantArray.SAFEARRAY
thisletter.s = ""
     
CoInitialize_(0)
CoCreateInstance_(?CLSID_MsftDiscMaster2,0,1,?IID_IDiscMaster2,@DiscMaster.IDiscMaster2)
DiscMaster\get_Count(@count)

Debug driveletter
For imapidrives = 0 To count

  Debug " "
  
  DiscMaster\get_Item(imapidrives,@pp\bstrval)
  
  CoCreateInstance_(?CLSID_MsftDiscRecorder2,0,1,?IID_IDiscRecorder2,@Recorder.IDiscRecorder2)
  Recorder\InitializeDiscRecorder(pp\bstrval)
   
  CoCreateInstance_(?CLSID_MsftDiscFormat2Erase,0,1,?IID_IDiscFormat2Erase,@Format.IDiscFormat2Erase)
  Format\put_Recorder(Recorder)  
  

  Recorder\InitializeDiscRecorder(pp\bstrval)  
  Debug "drive:   " +Str(imapidrives) +"   is ID:       " +ax_Uni2Ansi(pp\bstrval)   

  Recorder\get_ProductId(@pp\bstrval)
  Debug "ProductID:              "+ax_Uni2Ansi(pp\bstrval)

  Recorder\get_VolumePathNames(@value.SAFEARRAY)
  Variant\parray = PeekL(value)
  *VariantArray = Variant\parray
  For i = 1 To *VariantArray\rgsabound[0]\cElements
    *Variant = *VariantArray\pvData + (i - 1) * 16

    thisletter = sfs_Get_VariantString(*Variant)
    Debug "Your Drive Path is:   " +thisletter
  
    med_type = Format\get_CurrentPhysicalMediaType(@mediaType)
    Debug mediatype
  
  Next i
  If thisletter = UCase(driveletter)
    Break
  EndIf
  
  Debug ""
   
Next imapidrives

DiscMaster\Release()
Recorder\Release()   
Format\Release()

CoUninitialize_()
       
DataSection
  CLSID_MsftDiscMaster2:
    Data.l $2735412E
    Data.w $7F64,$5B0F
    Data.b $8F,$00,$5D,$77,$AF,$BE,$26,$1E

  CLSID_MsftDiscRecorder2:
    Data.l $2735412D
    Data.w $7F64,$5B0F
    Data.b $8F,$00,$5D,$77,$AF,$BE,$26,$1E

  CLSID_MsftDiscFormat2Erase:
    Data.l $2735412B
    Data.w $7F64,$5B0F
    Data.b $8F,$00,$5D,$77,$AF,$BE,$26,$1E

  IID_IDiscMaster2:
    Data.l $27354130
    Data.w $7F64,$5B0F
    Data.b $8F,$00,$5D,$77,$AF,$BE,$26,$1E

  IID_IDiscRecorder2:
    Data.l $27354133
    Data.w $7F64,$5B0F
    Data.b $8F,$00,$5D,$77,$AF,$BE,$26,$1E

  IID_IDiscFormat2Erase:
    Data.l $27354156
    Data.w $8F64,$5B0F
    Data.b $8F,$00,$5D,$77,$AF,$BE,$26,$1E
EndDataSection
EnableDebugger
ProcedureReturn mediatype

EndProcedure;ugs_get_IMAPImediaType(driveletter.s)

cdvdLW.s = "z:\"
Debug "LW to check: "+cdvdLW

thismediatype = ugs_get_IMAPImediaType(cdvdLW)
Debug thismediatype
Select thismediaType 
   
  Case #IMAPI_MEDIA_TYPE_UNKNOWN
  Debug "Media Type is Unknown or no media loaded"
     
  Case #IMAPI_MEDIA_TYPE_CDROM
  Debug "Media Type is a CD-ROM (or burned CD-R)"
     
  Case #IMAPI_MEDIA_TYPE_CDR
  Debug "Media Type is CD-R"
     
  Case #IMAPI_MEDIA_TYPE_CDRW
  Debug "Media Type is CD-R/W"
     
  Case #IMAPI_MEDIA_TYPE_DVDROM
  Debug "Media Type is a DVD-ROM (or a burned DVD-R)"
    
  Case #IMAPI_MEDIA_TYPE_DVDRAM
  Debug "Media Type is DVD-RAM"
     
  Case #IMAPI_MEDIA_TYPE_DVDPLUSR
  Debug "Media Type is DVD+R"
    
  Case #IMAPI_MEDIA_TYPE_DVDPLUSRW
  Debug "Media Type is DVD+RW"
     
  Case #IMAPI_MEDIA_TYPE_DVDPLUSR_DUALLAYER
  Debug "Media Type is DVD+R DL"
    
  Case #IMAPI_MEDIA_TYPE_DVDDASHR
  Debug "Media Type is DVD-R"
    
  Case #IMAPI_MEDIA_TYPE_DVDDASHRW
  Debug "Media Type is DVD-RW"
    
  Case #IMAPI_MEDIA_TYPE_DVDDASHR_DUALLAYER
  Debug "Media Type is DVD-R DL"
   
  Case #IMAPI_MEDIA_TYPE_DISK
  Debug "Media Type is Disk"
   
  Case #IMAPI_MEDIA_TYPE_DVDPLUSRW_DUALLAYER
  Debug "Media Type is DVD+RW DL"
    
  Case #IMAPI_MEDIA_TYPE_HDDVDROM
  Debug "Media Type is HD DVD-ROM"
    
  Case #IMAPI_MEDIA_TYPE_HDDVDR
  Debug "Media Type is HD DVD-R"
  
  Case #IMAPI_MEDIA_TYPE_HDDVDRAM
  Debug "Media Type is HD DVD-RAM"
    
  Case #IMAPI_MEDIA_TYPE_BDROM
  Debug "Media Type is BD-ROM"
    
  Case #IMAPI_MEDIA_TYPE_BDR
  Debug "Media Type is BD-R"
    
  Case #IMAPI_MEDIA_TYPE_BDRE
  Debug "Media Type is BD-RE"

EndSelect

End

Does it work for you (Michael Korolev) now ?

Posted: **Sun Jul 13, 2008 3:07 pm**

Damn, IMAPI is too difficult for me

. No, Invalid memory access in line 11

Posted: **Sun Jul 13, 2008 3:38 pm**

Line 11 ???
That's "endif"

in Procedure.S sfs_Get_VariantString(*Variant.VARIANT) which is originally from SFSxOI, AFAIR.

Michael Korolev wrote:Damn, IMAPI is too difficult for me

I don't think so.
I don't understand most of his code, but I followed him changing it and it was not that difficult to ripp off the part I needed to get the media-infos.

------------------
If you don't get around with IMAPI, have a look at this thread, where Sparkie tried to help.
The results are not as correct as the IMAPI-way, but may probably satisfy you.

------------------
BTW: What versions of Windows and PureBasic are you using?

Posted: **Sun Jul 13, 2008 3:58 pm**

I know. But line 11. I testing on Win Vista SP1. Checked with PureBasic 4.02 and 4.20

Posted: **Sun Jul 13, 2008 5:24 pm**

Please use the right driveletter for your system instead of my "z:\" and tell the result.
In the German forum I got response, that the code works on Vista Ultimate 64 SP1 with the right driveletters while my "z:\" gave an error like yours.

Posted: **Sun Jul 13, 2008 5:28 pm**

Works! I didn't know that I need to define drive letter, I thought, this code enumerating them all

. How I can thank you!?

One thing is confusing that to know a drive letter I need to write 278 strings! I afraid to look at this code in C++

So, user need to have minimun WinXP SP2 with special update (IMAPI v2)?

Posted: **Sun Jul 13, 2008 5:51 pm**

Michael Korolev wrote:Works! I didn't know that I need to define drive letter, I thought, this code enumerating them all

Well, at first I just posted the proc, which should have indicated, that it is only called for one drive.
And than I quickly build around the rest for working code. Sometimes (especially on weekends) I'm as lazy as possible

Michael Korolev wrote:How I can thank you!?

Just try to share knowledge here, when you feel to be able to help and don't hesitate coz of not so good English. There's always a way to explain and sometimes code tells more than thousand words

Michael Korolev wrote:So, user need to have minimun WinXP SP2 with special update (IMAPI v2)?

AFAIK: Yes.
But I remember someone posting about problems, when SP3 is installed over SP2 without doing that IMAPI-update first.

Michael Korolev wrote:One thing is confusing that to know a drive letter I need to write 278 strings!

Why? And Which 278 strings?

Code: Select all

; German forum: http://www.purebasic.fr/german/viewtopic.php?t=1895&highlight=
; Author: DataMiner (updated for PB 4.00 by Andre)
; Date: 05. February 2005
; OS: Windows
; Demo: No

Define.l Serial, type, i 
Define.s Lfwrk, FileSystem, VolName 

For i=65 To 90 
  Lfwrk=Chr(i)+":" 
  type =GetDriveType_(Lfwrk) 
  FileSystem = Space(256) 
  VolName= Space(256) 
  GetVolumeInformation_(@Lfwrk, @VolName, 255, @Serial, 0, 0, @FileSystem, 255) 
  Select type 
    Case 0 
      Debug Lfwrk+" The drive type cannot be determined." 
    Case 2 
      Debug Lfwrk+" = DRIVE_REMOVABLE, "+VolName+", "+FileSystem+", "+  Hex(Serial) 
    Case 3 
      Debug Lfwrk+" = DRIVE_FIXED, "+VolName+", "+FileSystem+", "+  Hex(Serial) 
    Case 4 
      Debug Lfwrk+" = DRIVE_REMOTE, "+VolName+", "+FileSystem+", "+  Hex(Serial) 
    Case 5 
      Debug Lfwrk+" = DRIVE_CDROM, "+VolName+", "+FileSystem+", "+  Hex(Serial) 
    Case 6 
      Debug Lfwrk+" = DRIVE_RAMDISK,   "+VolName+", "+FileSystem+", "+  Hex(Serial) 
  EndSelect 
Next

In case 5 you can call the proc to determine the media-type

Posted: **Thu Jul 31, 2008 9:12 am**

when i compile code, it's always crash on "DiscMaster\get_Count(@count)" or think like this one.
What i do wrong ?

Posted: **Thu Jul 31, 2008 1:14 pm**

Please give some more information:

- which code crashes
- which OS and Service-Pack
- did you install the mentioned "IMAPI"-patch
- which PB-Version exactly

Posted: **Thu Jul 31, 2008 3:35 pm**

This code :
Posted: Sun Jul 13, 2008 11:12

On top of this page

Windows XP SP2, pb4.20

But i don't have this :
the mentioned "IMAPI"-patch

I think i skip this information, sorry

What is this and where find this ?
Thanks

Posted: **Thu Jul 31, 2008 3:47 pm**

Le Soldat Inconnu wrote:... But i don't have this :
the mentioned "IMAPI"-patch

I think i skip this information, sorry
What is this and where find this ?

I think this is it : http://www.microsoft.com/downloads/deta ... laylang=en

Posted: **Thu Jul 31, 2008 4:06 pm**

Yes, gnozal was too fast

And don't use my "z:\" but the letter of your drive

Posted: **Tue Oct 14, 2008 11:35 pm**

harff182 wrote:I hoped, there would be something like Get_IMAPIVersion_(), but now I will try something like
Code: Select all
If OpenLibrary(#PB_Any, "imapi2.dll") = 0
  MessageRequester("Error","Problems with Imapi V2, consult the docs")
EndIf

Can't you just check to see whether the DiscMaster object is created successfully or not? If it fails, you can't do much anyway, so you could ask the user to ensure they have installed the patch.

It's possible that the name of the DLL could change, or that someone could implement the IDiscMaster interface using an alternative underlying object.

PS, I've just found this thread as I need to identify whether a CD drive has some blank media in it or not. So this is all excellent work as it saves me the effort :)

Thanks.

PureBasic Forums - English

IMAPIv2 for Vista