How to OPEN native PRINTER DIALOG -- Please HELP !!

[pamelafluente@libero.it]

I am doing my own PrintDialog, and have placed there a combo with the
printer names, as in the PrintDialog provided by VB.NET.

Here is the question: how do I open the native windows printer dialog
for the current printer, so that my current
PrintDocument.P rinterSettings will be set according to the User choices
?

Thanks
-Pamela


My question in code. Assume you have ceated a MyPrintDialog
form with a combo box "ComboBoxPrinte rNames" listing the printers and a
button "ButtonSelected PrinterProperti es"
to set the current printer properties.

---------------------------------------
Private Sub ButtonSelectedP rinterPropertie s_Click(ByVal sender As
System.Object, ByVal e As System.EventArg s) Handles
ButtonSelectedP rinterPropertie s.Click

Me.PrintDocumen t.PrinterSettin gs.PrinterName =
Me.ComboBoxPrin terNames.Select edText
If Not Me.PrintDocumen t.PrinterSettin gs.IsValid Then
MsgBox("Invalid printer", MsgBoxStyle.Inf ormation)
Exit Sub
End If

Me.OpenPrinterP ropertiesDialog (PrintDocument)
End Sub

Sub OpenPrinterProp ertiesDialog(By Val PrintDocument As
PrintDocument)

' ???????? my question: how to open the windows dialog for
setting PrintDocument.P rinterSettings

End Sub
--------------------------------------------

[Bart Mermuys]

Re: How to OPEN native PRINTER DIALOG -- Please HELP !!

Hi,

<pamelafluente@ libero.it> wrote in message
news:1130762407 .959366.143190@ o13g2000cwo.goo glegroups.com.. .[color=blue]
>I am doing my own PrintDialog, and have placed there a combo with the
> printer names, as in the PrintDialog provided by VB.NET.
>
> Here is the question: how do I open the native windows printer dialog
> for the current printer, so that my current
> PrintDocument.P rinterSettings will be set according to the User choices
> ?
>
> Thanks
> -Pamela
>
>
> My question in code. Assume you have ceated a MyPrintDialog
> form with a combo box "ComboBoxPrinte rNames" listing the printers and a
> button "ButtonSelected PrinterProperti es"
> to set the current printer properties.
>
> ---------------------------------------[/color]

Without much guarantee though it should be possible with a few native
functions:

Public Class YourPrinterSett ingsDialog
' native functions
Private Declare Auto Function GlobalLock Lib "kernel32.d ll" _
(ByVal handle As IntPtr) As IntPtr
Private Declare Auto Function GlobalUnlock Lib "kernel32.d ll" _
(ByVal handle As IntPtr) As Integer
Private Declare Auto Function GlobalFree Lib "kernel32.d ll" _
(ByVal handle As IntPtr) As IntPtr
Private Declare Auto Function DocumentPropert ies Lib "winspool.d rv" _
(ByVal hWnd As IntPtr, ByVal hPrinter As IntPtr, _
ByVal pDeviceName As String, ByVal pDevModeOutput As IntPtr, _
ByVal pDevModeInput As IntPtr, ByVal fMode As Int32) As Integer


Private Sub ButtonSelectedP rinterPropertie s_Click( ... )...
' only change PrinterName when it is required, NOT each time the user
presses
' the button, setting a printername resets some of the settings
If (ComboBoxPrinte rNames.Selected Index <> -1) Then
If (Me.PrintDocume nt.PrinterSetti ngs.PrinterName <>
ComboBoxPrinter Names.Text) Then
Me.PrintDocumen t.PrinterSettin gs.PrinterName =
ComboBoxPrinter Names.Text
End If
If Me.PrintDocumen t.PrinterSettin gs.IsValid Then
Me.OpenPrinterP ropertiesDialog (PrintDocument. PrinterSettings )
Else
MsgBox("Invalid printersettings ", MsgBoxStyle.Inf ormation)
End If
Else
MsgBox("Choose a printer", MsgBoxStyle.Inf ormation)
End If
End Sub

Sub OpenPrinterProp ertiesDialog(By Val Settings As PrinterSettings )
' PrinterSettings +PageSettings -> hDEVMODE
Dim hDevMode As IntPtr = _
Settings.GetHde vmode(Settings. DefaultPageSett ings)

' Show Dialog ( [In,Out] pDEVMODE )
Dim pDevMode As IntPtr = GlobalLock(hDev Mode)
DocumentPropert ies(Me.Handle, IntPtr.Zero, _
Settings.Printe rName, pDevMode, pDevMode, 14)
GlobalUnlock(hD evMode)

' hDEVMODE -> PrinterSettings +PageSettings
Settings.SetHde vmode(hDevMode)
Settings.Defaul tPageSettings.S etHdevmode(hDev Mode)

' cleanup
GlobalFree(hDev Mode)
End Sub

End Class

HTH,
Greetings

[pamelafluente@libero.it]

Re: How to OPEN native PRINTER DIALOG -- Please HELP !!

Dear Bart,

Really THANK YOU VERY MUCH !!! for your contribution.

You also provide some additional advice. Let me study and try to
implement it.

This one is very important for my work. Infact the PrintDialog provided
with .NET is too primitive
to be useful in real programs, and once one rewrite one cannot escape
the task to manually call the printer setup.

I will work on it and will probably poput later with some question, in
case I have problems.

I am very grateful,

-Pamela

[pamelafluente@libero.it]

Re: How to OPEN native PRINTER DIALOG -- Please HELP !!

Dear Burt,

I have tried your code (on XP). Actually it is quite complete. You
have practically
done the all job. I also appreciated your correction about setting
the printer name.
You are really an angel!

I have not tried yet to print because now its night here and I am
not at my office,
but the printer properties dialog pops up fine. In case of problems
I will tell you.

If I may, I would need some further info for some refinements.
I am loading the printer names in a combo (or perhaps I will use a
treeview):
with something like:

-------------------------------------
Private Sub YourPrinterSett ingsDialog_Load (ByVal sender...) Handles
MyBase.Load

Dim PrinterNames As New ArrayList
For Each PrinterName As String In
PrinterSettings .InstalledPrint ers
Try
PrinterNames.Ad d(PrinterName)
Catch
End Try
Next PrinterName
Me.ComboBoxPrin terNames.Items. AddRange(Printe rNames.ToArray)

End Sub
------------------------------------

I need to recognize: 1. the Default Printer, 2. Network printers, to
change the appearance
of their icons. So, I guess, I need 2 boolean functions:

function IsDefaulPrinter (PrinterName as string) as boolean
function IsNetworkPrinte r(PrinterName as string) as boolean
(others assumed local, I guess)

Do you know how to make these functions?
Any suggestion is very welcome. Thanks,

-Pamela

[Bart Mermuys]

Re: How to OPEN native PRINTER DIALOG -- Please HELP !!

Hi,

<pamelafluente@ libero.it> wrote in message
news:1130805112 .344751.181390@ g49g2000cwa.goo glegroups.com.. .[color=blue]
> Dear Burt,
>
> I have tried your code (on XP). Actually it is quite complete. You
> have practically
> done the all job. I also appreciated your correction about setting
> the printer name.
> You are really an angel!
>
> I have not tried yet to print because now its night here and I am
> not at my office,
> but the printer properties dialog pops up fine. In case of problems
> I will tell you.
>
> If I may, I would need some further info for some refinements.
> I am loading the printer names in a combo (or perhaps I will use a
> treeview):
> with something like:
>
> -------------------------------------
> Private Sub YourPrinterSett ingsDialog_Load (ByVal sender...) Handles
> MyBase.Load
>
> Dim PrinterNames As New ArrayList
> For Each PrinterName As String In
> PrinterSettings .InstalledPrint ers
> Try
> PrinterNames.Ad d(PrinterName)
> Catch
> End Try
> Next PrinterName
> Me.ComboBoxPrin terNames.Items. AddRange(Printe rNames.ToArray)
>
> End Sub
> ------------------------------------
>
> I need to recognize: 1. the Default Printer, 2. Network printers, to
> change the appearance
> of their icons. So, I guess, I need 2 boolean functions:
>
> function IsDefaulPrinter (PrinterName as string) as boolean
> function IsNetworkPrinte r(PrinterName as string) as boolean
> (others assumed local, I guess)[/color]

I understand you want to customize the PrintDialog, is there anything in
particular that you want to change or add, it is possible to create your
own, but it will involve a lot of pinvoke.

About default and network printers, it's not that simple, if you want to do
this for all printers then you need to think about speed. You can use the
native function EnumPrinters(se e MSDN) but it gets complicated because a
different level is needed for wxp/2000 or w9x/me.

The example shows you how you can do it using 2 additional classes:
PrinterInfo (name, isdefault, isnetwork)
PrinterApi (thin wrapper around w32 native Printer Functions)

YourPrintDialog .vb
------------------
Public Class YourPrintDialog
' ....
Private Sub LoadPrinters()
ComboBoxPrinter Names.Clear()

For Each pi As PrinterInfo In PrinterInfo.Ins talledPrinters
Console.WriteLi ne("Name={0} Def={1} Network={2}", _
pi.Name, pi.IsDefault, pi.IsNetwork)

ComboBoxPrinter Names.Items.Add (pi.Name)
If (pi.IsDefault) Then ComboBoxPrinter Names.Text = pi.Name
Next
End Sub
' ....
End Class


PrinterInfo.vb
--------------
Public Class PrinterInfo

Public Name As String
Public IsDefault As Boolean
Public IsNetwork As Boolean

Public Shared ReadOnly Property InstalledPrinte rs() As PrinterInfo()
Get
Dim infos As New ArrayList
If (Environment.OS Version.Platfor m = PlatformID.Win3 2NT) Then
' window xp,2000
Dim DefName As String = PrinterApi.GetD efPrinter()

For Each pi4 As PrinterApi.PRIN TER_INFO_4 In _
PrinterApi.Enum Info4( _
PrinterApi.PRIN TER_ENUM_LOCAL Or _
PrinterApi.PRIN TER_ENUM_CONNEC TIONS)

Dim pi As New PrinterInfo
pi.Name = pi4.PrinterName
pi.IsDefault = Equals(pi4.Prin terName, DefName)
pi.IsNetwork = (pi4.Attributes And
PrinterApi.PRIN TER_ATTRIBUTE_N ETWORK) > 0
infos.Add(pi)
Next
Else
' windows 95,98,me
For Each pi5 As PrinterApi.PRIN TER_INFO_5 In _
PrinterApi.Enum Info5(PrinterAp i.PRINTER_ENUM_ LOCAL)
Dim pi As New PrinterInfo
pi.Name = pi5.PrinterName
pi.IsDefault = (pi5.Attributes And
PrinterApi.PRIN TER_ATTRIBUTE_D EFAULT) > 0
pi.IsNetwork = (pi5.Attributes And
PrinterApi.PRIN TER_ATTRIBUTE_N ETWORK) > 0
infos.Add(pi)
Next
End If
Return infos.ToArray(G etType(PrinterI nfo))
End Get
End Property
End Class


PrinterApi.vb
--------------
Imports System.Runtime. InteropServices
Imports System.Text

Public Class PrinterApi

Private Declare Auto Function EnumPrinters Lib "winspool.d rv" ( _
ByVal flags As Int32, ByVal name As String, ByVal level As Int32, _
ByVal pPrinterEnum As IntPtr, ByVal cbBuf As Int32, _
ByRef pcbNeeded As Int32, ByRef pcReturned As Int32) As Int32

Private Declare Auto Function GetDefaultPrint er Lib "winspool.d rv" ( _
ByVal szBuffer As StringBuilder, _
ByRef cchBuffer As Int32) As Int32

<StructLayout(L ayoutKind.Seque ntial, CharSet:=CharSe t.Auto)> _
Public Class PRINTER_INFO_4
Public PrinterName As String
Public ServerName As String
Public Attributes As Integer
End Class

<StructLayout(L ayoutKind.Seque ntial, CharSet:=CharSe t.Auto)> _
Public Class PRINTER_INFO_5
Public PrinterName As String
Public PortName As String
Public Attributes As Integer
Public DeviceNotSelect edTimeout As Integer
Public TransmissionRet ryTimeout As Integer
End Class

Public Const PRINTER_ATTRIBU TE_NETWORK As Int32 = &H10
Public Const PRINTER_ENUM_CO NNECTIONS As Int32 = &H4
Public Const PRINTER_ENUM_LO CAL As Int32 = &H2
Public Const PRINTER_ATTRIBU TE_DEFAULT As Int32 = &H4

Public Shared Function GetDefPrinter() As String
Dim sbName As New StringBuilder(3 2)
GetDefaultPrint er( sbName, 32 )
return sbName.ToString ()

End Function

Public Shared Function EnumInfo4(ByVal Flags As Int32) As PRINTER_INFO_4( )
' level 4 enum
Return DirectCast( _
EnumInfo(4, Flags, GetType(PRINTER _INFO_4)), _
PRINTER_INFO_4( ))

End Function

Public Shared Function EnumInfo5(ByVal Flags As Int32) As PRINTER_INFO_5( )
' level 5 enum
Return DirectCast( _
EnumInfo(5, Flags, GetType(PRINTER _INFO_5)), _
PRINTER_INFO_5( ))

End Function

Private Shared Function EnumInfo(ByVal Level As Int32, _
ByVal Flags As Int32, ByVal InfoType As Type) As Object()

Dim cbNeeded As Int32, cReturned As Int32
Dim pBuffer As IntPtr, pBuf As IntPtr
Dim pi As Object
Dim infos As New ArrayList

' enumerate printers
EnumPrinters(Fl ags, Nothing, Level, IntPtr.Zero, 0, cbNeeded, cReturned)
pBuffer = Marshal.AllocHG lobal(cbNeeded)

EnumPrinters(Fl ags, Nothing, Level, pBuffer, cbNeeded, cbNeeded,
cReturned)

pBuf = pBuffer
For i As Int32 = 0 To cReturned - 1
pi = Marshal.PtrToSt ructure(pBuf, InfoType)
infos.Add(pi)

pBuf = New IntPtr(pBuf.ToI nt64() + Marshal.SizeOf( InfoType))
Next
Marshal.FreeHGl obal(pBuffer)
Return infos.ToArray(I nfoType)

End Function
End Class

HTH,
Greetings



[color=blue]
>
> Do you know how to make these functions?
> Any suggestion is very welcome. Thanks,
>
> -Pamela
>[/color]

[pamelafluente@libero.it]

Re: How to OPEN native PRINTER DIALOG -- Please HELP !!

Dear Burt,

I don't now what to say.

I should probably take a flight and come to kiss you. Or send Microsoft
a petition to have you appointed MVP.
Thanks!!!!!!!!! !!!!!!!!!!!!!!! !!!!!!!

I * do have to * make my own PrintDialog. I have abolutely no choice
because the application is such that there is no way to use the one
provided with the language.

So the help you are so kindly and generously providing is very crucial
for me.

Let me digest all the material you have provided. I will be back later
with possible
questions.

A presto,

-Pamela

[pamelafluente@libero.it]

Re: How to OPEN native PRINTER DIALOG -- Please HELP !!

Dear Bart,

I have tried it on XP Professional with a unique default local printer.

It seems it fail to recognize the a default printer. This is the
result:

Name=Microsoft Office Document Image Writer Def=False Network=False

The function:
Public Shared Function GetDefPrinter() As String
returns an empty string.
GetDefaultPrint er is returning an empty stringbuilder.

In particular

Public Class PrinterInfo
.....

For Each pi4 As PrinterApi.PRIN TER_INFO_4 In
PrinterApi.Enum Info4(PrinterAp i.PRINTER_ENUM_ LOCAL Or
PrinterApi.PRIN TER_ENUM_CONNEC TIONS)
Dim pi As New PrinterInfo
pi.Name = pi4.PrinterName
pi.IsDefault = Equals(pi4.Prin terName, DefName)

'------------------------------------------------
when executed on XP with a unique, default, printer I have:

pi4.PrinterName = "Microsoft Office Document Image Writer"
DefName = ""

hence it does not recognize the default printer as such.
PrinterApi.GetD efPrinter is returning empty string

--------------------------------------------------

pi.IsNetwork = (pi4.Attributes And
PrinterApi.PRIN TER_ATTRIBUTE_N ETWORK) > 0
infos.Add(pi)
Next

This is strange it is like the native function GetDefaultPrint er it is
not doing its job (?)

-Pamela

[Bart Mermuys]

Re: How to OPEN native PRINTER DIALOG -- Please HELP !!

Hi,

<pamelafluente@ libero.it> wrote in message
news:1130868230 .681055.40850@g 47g2000cwa.goog legroups.com...[color=blue]
> Dear Bart,
>
> I have tried it on XP Professional with a unique default local printer.
>
> It seems it fail to recognize the a default printer. This is the
> result:
>
> Name=Microsoft Office Document Image Writer Def=False Network=False
>
> The function:
> Public Shared Function GetDefPrinter() As String
> returns an empty string.
> GetDefaultPrint er is returning an empty stringbuilder.[/color]

I think it is caused because the Name is longer then 32 characters (which is
currently the limit inside GetDefPrinter() but also in PRINTER_INFO_4/5), if
you can try it with a printer that has a shorter name, i will look how to
deal with this and get back to you later.

HTH,
Greetings
[color=blue]
>
> In particular
>
> Public Class PrinterInfo
> ....
>
> For Each pi4 As PrinterApi.PRIN TER_INFO_4 In
> PrinterApi.Enum Info4(PrinterAp i.PRINTER_ENUM_ LOCAL Or
> PrinterApi.PRIN TER_ENUM_CONNEC TIONS)
> Dim pi As New PrinterInfo
> pi.Name = pi4.PrinterName
> pi.IsDefault = Equals(pi4.Prin terName, DefName)
>
> '------------------------------------------------
> when executed on XP with a unique, default, printer I have:
>
> pi4.PrinterName = "Microsoft Office Document Image Writer"
> DefName = ""
>
> hence it does not recognize the default printer as such.
> PrinterApi.GetD efPrinter is returning empty string
>
> --------------------------------------------------
>
> pi.IsNetwork = (pi4.Attributes And
> PrinterApi.PRIN TER_ATTRIBUTE_N ETWORK) > 0
> infos.Add(pi)
> Next
>
> This is strange it is like the native function GetDefaultPrint er it is
> not doing its job (?)
>
> -Pamela
>[/color]

[Bart Mermuys]

Re: How to OPEN native PRINTER DIALOG -- Please HELP !!

Hi,

"Bart Mermuys" <bmermuys.nospa m@hotmail.com> wrote in message
news:eJu21ix3FH A.3880@TK2MSFTN GP12.phx.gbl...[color=blue]
> Hi,
>
> <pamelafluente@ libero.it> wrote in message
> news:1130868230 .681055.40850@g 47g2000cwa.goog legroups.com...[color=green]
>> Dear Bart,
>>
>> I have tried it on XP Professional with a unique default local printer.
>>
>> It seems it fail to recognize the a default printer. This is the
>> result:
>>
>> Name=Microsoft Office Document Image Writer Def=False Network=False
>>
>> The function:
>> Public Shared Function GetDefPrinter() As String
>> returns an empty string.
>> GetDefaultPrint er is returning an empty stringbuilder.[/color]
>
> I think it is caused because the Name is longer then 32 characters (which
> is currently the limit inside GetDefPrinter() but also in
> PRINTER_INFO_4/5), if you can try it with a printer that has a shorter
> name, i will look how to deal with this and get back to you later.[/color]

Oh, PRINTER_INFO4/5.PrinterName isn't limited to 32 character, so i
shouldn't have limited GetDefPrinter, my mistake.

Corrected code for GetDefPrinter inside PrinterApi:

Public Shared Function GetDefPrinter() As String
Dim len As Integer
Dim sbName As StringBuilder

GetDefaultPrint er(Nothing, len)
sbName = New StringBuilder(l en)

GetDefaultPrint er(sbName, len)
Return sbName.ToString ()
End Function

HTH,
Greetings

[color=blue]
>
> HTH,
> Greetings
>[color=green]
>>
>> In particular
>>
>> Public Class PrinterInfo
>> ....
>>
>> For Each pi4 As PrinterApi.PRIN TER_INFO_4 In
>> PrinterApi.Enum Info4(PrinterAp i.PRINTER_ENUM_ LOCAL Or
>> PrinterApi.PRIN TER_ENUM_CONNEC TIONS)
>> Dim pi As New PrinterInfo
>> pi.Name = pi4.PrinterName
>> pi.IsDefault = Equals(pi4.Prin terName, DefName)
>>
>> '------------------------------------------------
>> when executed on XP with a unique, default, printer I have:
>>
>> pi4.PrinterName = "Microsoft Office Document Image Writer"
>> DefName = ""
>>
>> hence it does not recognize the default printer as such.
>> PrinterApi.GetD efPrinter is returning empty string
>>
>> --------------------------------------------------
>>
>> pi.IsNetwork = (pi4.Attributes And
>> PrinterApi.PRIN TER_ATTRIBUTE_N ETWORK) > 0
>> infos.Add(pi)
>> Next
>>
>> This is strange it is like the native function GetDefaultPrint er it is
>> not doing its job (?)
>>
>> -Pamela
>>[/color]
>
>[/color]

[pamelafluente@libero.it]

Re: How to OPEN native PRINTER DIALOG -- Please HELP !!

Bart,

very good. Now it works. Tomorrow morning I will be able to do more
extensive testing on a networked environment. I will let you know the
result.

Congratulation for your knowledge. I envy you.

Where did you get all that know how? After one reads your code and the
gdi documentation everything seems even obvious, but if I should have
done it only reading the documentation, I would have probably struggled
for months to put things together. How can one become like you? :-)

-Pamela

[Bart Mermuys]

Re: How to OPEN native PRINTER DIALOG -- Please HELP !!

Hi,

<pamelafluente@ libero.it> wrote in message
news:1130877034 .316161.152550@ g14g2000cwa.goo glegroups.com.. .[color=blue]
> Bart,
>
> very good. Now it works. Tomorrow morning I will be able to do more
> extensive testing on a networked environment. I will let you know the
> result.[/color]

Hope it goes well.
[color=blue]
>
> Congratulation for your knowledge. I envy you.
>
> Where did you get all that know how? After one reads your code and the
> gdi documentation everything seems even obvious, but if I should have
> done it only reading the documentation, I would have probably struggled
> for months to put things together. How can one become like you? :-)[/color]

:-) Like all things the beginning is hard, but after a while things begin to
make more sense. I have done lots of pinvoke and it is a lot easier if you
have used api's in unmanaged code (like c/c++) before, you really need to
know about pointers and memory allocation. When you know enough about
pointers and the like then there is enough information inside .net framework
sdk doc to get you started with pinvoke, the rest you'll need to learn from
practice, examples or other sources.

Greetings
[color=blue]
>
> -Pamela
>[/color]

[pamelafluente@libero.it]

Re: How to OPEN native PRINTER DIALOG -- Please HELP !!

Dear Bart

I am going to go sleep. Just a few thoughs.
I am really fashinated by this kind of specific knowledge.

In my programs I have always tried to stick as much as possible
to the functionalities provided by the language, to avoid, using native
things,
that if Microsoft changes something than my program could no more work
or run into errors. So say mainly maintenance reason. On the other hand
its really exciting to put hands on that native stuff.

In this case I am forced to use them because strangey Microsoft does
not provided them in the framework. But at the same time I am afraid
that with maybe next version of windows my program would run into
errors.
Actually the class you made up PrinterInfo is very useful in general
and I don't
see why Microsoft does not include it (or something similar) in the
framework.

I am sure that a large number of programmers will have this basic need
to have control
on printing process, and your class is absolutely indispensable.

Looking at your code I have a couple of doubts. Can we rely this work
on any framework
and os (win 2003, ...)? Also about the function Equal. Is it safe to
use it or it would be more
prudent to use a case insensitive (and perhaps even trimmed) version,
just in case... ?

See you later,

-Pamela