Re: Hi,Correctly uncompressing RTF text - Visual Basic Discussion Boards

Hi,

There are many ways, but this will be a good one:

In form 2:
Public MyValue As String

In form 1:
Dim f as new Form2
f.MyValue = str
f.Show

Now in form 2 you can simple process the value of MyValue variable.

Hope this will help!

NajiCo http://www.InsideVB.NET[^]

It's nice 2b important, but it's more important 2b nice...

Naji El Kotob wrote:
There are many ways, but this will be a good one

I'll have to disagree on that one. Destroying encapsulation by making a class field public is rarely a good idea.

See these two articles for a discussion on the subject:
* Why make fields in a class private, why not just make them public?[^]
* The public fields debate again[^]

Upcoming events:
* Glasgow: Mock Objects, SQL Server CLR Integration, Reporting Services, db4o, Dependency Injection with Spring ...

"I wouldn't say boo to a goose. I'm not a coward, I just realise that it would be largely pointless."

My website

Thanks man the code is correct.
One more thing can i store this value to a properties for example:

public properties you()

get
return textbox.text
end get

set (byval value as string)
textbox.text = value
end set

Please read the forum guidelines.
Highlights include making your message title have meaning. Everyone here needs help.

_____________________________________________
Flea Market! It's just like...it's just like...A MINI-MALL!

leckey wrote:
Highlights include making your message title have meaning.

Yes. I find that using the < pre > ... < / pre > with the < code > ... < / code > tags makes it much more readable.

"The clue train passed his station without stopping." - John Simmons / outlaw programmer

its simple...

<br />
button1_click()<br />
Dim a As New Form2<br />
        a.YourPublicMember = TextBox1.Text<br />
        myform.Show()

before loading of form 2
public yourpublicmember as string
form2_loads()
textbox1.text=yourpublicmember

Hi,
I have some code which uses CDO to retrieve a mail item from outlook
I know that the body is stored in RTF and have read this from CDO.
My problem is that the RTF is in compressed format - now doing some google research I have have found an API call to uncompress the RTF.
I just cant get the code to call the API correctly.
Can you have a look at the code and tell me where I am being dumb please

 Public Const MAPI_MODIFY As UInteger = &H1<br />
    Public Const STORE_UNCOMPRESSED_RTF As UInteger = &H8000<br />
<br />
    Public Declare Function WrapCompressedRTFStream Lib "mapi32.dll" (<MarshalAs(UnmanagedType.Interface)> ByRef lpCompressedRTFStream As IStream, ByVal uFlags As UInt32, <MarshalAs(UnmanagedType.Interface)> ByRef lpUncompressedStream As IStream) As Integer<br />
<br />
    Function getRTFfromCDO(ByVal sEntryId As String)<br />
        Dim objCDO As MAPI.Session<br />
        Dim objMail As MAPI.Message<br />
        '  Dim strmOut As MemoryStream<br />
        Dim lpsource As ADODB.Stream = New ADODB.Stream ' Microsoft ADODB Com object reference<br />
        Dim lptarget As ADODB.Stream = New ADODB.Stream<br />
<br />
        Const CdoPR_RTF_COMPRESSED = &H10090102<br />
        objCDO = CreateObject("MAPI.Session")<br />
        objCDO.Logon("", "", False, False)<br />
        objMail = objCDO.GetMessage(sEntryId)<br />
        Try<br />
            lpsource.Type = StreamTypeEnum.adTypeText<br />
            lptarget.Type = StreamTypeEnum.adTypeText<br />
            lpsource.Open()<br />
            lpsource.WriteText(objMail.Fields(CdoPR_RTF_COMPRESSED).Value)<br />
            WrapCompressedRTFStream(lpsource, STORE_UNCOMPRESSED_RTF, lptarget)<br />
        Catch ex As Exception<br />
            MsgBox(ex.Message)<br />
        End Try<br />
<br />
        'Return objMail.Fields(CdoPR_RTF_COMPRESSED).Value<br />
        objCDO.Logoff()<br />
    End Function

thanks
Martin

life is a bowl of cherries
go on take a byte

You've got several problems. The lack of anyone using this API with C# or VB.NET is one of them, so documentation and support is lacking.

First, I think your declaration has to look more like:

Private Declare Auto Function WrapCompressedRTFStream Lib "mapi32.dll" ( _
    <MarshalAs(UnmanagedType.Interface)> ByVal lpCompressedRTFStream As ComTypes.IStream, _
    ByVal ulFlags As UInt32, _
    <MarshalAs(UnmanagedType.Interface)> ByVal lpUncompressedRTFStream As ComTypes.IStream) _
        As Integer

I have no way of testing this!

Second. You create an lpSource stream, but you never associate that stream with the incomming data. It's a stream that points to nothing. Some thing with your lpTarget. It also points to God knows what. You haven't told either of these object where the source and destination streams are actually supposed to get/write their data.

'  OK...You've created a couple of Streams.  What are they looking at??  Nothing!
Dim lpsource As ADODB.Stream = New ADODB.Stream ' Microsoft ADODB Com object reference
Dim lptarget As ADODB.Stream = New ADODB.Stream
...
Try
' Great! You set the stream types, but you still haven't told the source stream
' where to get it's data from!
lpsource.Type = StreamTypeEnum.adTypeText
lptarget.Type = StreamTypeEnum.adTypeText
 
' Open what stream??
lpsource.Open()

' I have no idea what this line is doing, nor why it's even here.
lpsource.WriteText(objMail.Fields(CdoPR_RTF_COMPRESSED).Value)

WrapCompressedRTFStream(lpsource, STORE_UNCOMPRESSED_RTF, lptarget)
' OK.  Now you've got the source stream wrapped.  But you don't read anything and
' you don't write anything to any stream.  All you did was wrap the source for
' decompression!
??????

From what I've seen in the docs for WrapCompressed... the stream you should be reading to get the uncompressed RTF is the lptarget stream.

I can't tell you exactly how to fix these problems. I have nothing to test any code with that will supply a compressed RTF in an email.

A guide to posting questions on CodeProject[^]

Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007

Hello,
The lpsource stream I am populating with the string defined by
objMail.Fields(CdoPR_RTF_COMPRESSED).Value
which is the compressed RTF stream of the Mail item as extracted by CDO - hence the Open and writeText

Its values in my example is
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
CF1F29A229040BB538451E8A2A2050E3036037822055703890299010B0D33FF50800616400C07033F418819323003FF64D4D3FE641751D60967305400460761F7028410540386C65614451031003206B6EDA6F07E07717A003A04A457245307620097041F02036601CA11CA068ED04002036800B807425903FF523B1F524902D07B34310F00F201F7119505F13900790054029613B2064087065EF1E8A1C1F1D2F1E3320211B31E02317FF212B25E331E1317324B52620252626307E380E404FA025B30C011E99142100015440" {String}

The lptarget stream I assumed was going to be populated by the uncompressed version of the text.
I read somewhere the ADODB.Stream was in effect a derived istream and could be used like that.
Is that true?

with your changes added , the API complained about an unopen lptarget stream
so I added an lptarget.open

now when I run it I get no error number but the lptarget.size is 0

any ideas??

Thanks
Martin

life is a bowl of cherries
go on take a byte

Hi,

I am trying to take a screen shot of a form without displaying it to the user. Here is the code:

Public Sub TakeScreenShot(ByVal windowHandle As IntPtr)

Dim screenBmp As Bitmap
Dim gfxScreenshot As Graphics

'Set the bitmap object size to the size of the form

screenBmp = New Bitmap((Screen.FromHandle(windowHandle)).Bounds.Width, (Screen.FromHandle(windowHandle)).PrimaryScreen.Bounds.Height, PixelFormat.Format32bppArgb)

'Create a graphics object from the bitmap
gfxScreenshot = Graphics.FromImage(screenBmp)

'Take the screenshot from the upper left corner to the right bottom corner of the form
gfxScreenshot.CopyFromScreen((Screen.FromHandle(windowHandle)).Bounds.X, (Screen.FromHandle(windowHandle)).Bounds.Y, 0, 0, (Screen.FromHandle(windowHandle)).Bounds.Size, CopyPixelOperation.SourceCopy)

'Save the screen shot
screenBmp.Save("C:\test.jpg", ImageFormat.Jpeg)

End Sub

But what it ends up doing instead is taking a screenshot of the whole screen without the form! How can I fix this?

Thanks in advance!
Ahmad

Try this:

Dim Pic As Bitmap<br />
        Dim SS As Graphics<br />
<br />
 Pic = New Bitmap(me.width, me.height, Imaging.PixelFormat.Format32bppArgb)<br />
        SS = Graphics.FromImage(Pic)<br />
        SS.CopyFromScreen(me.location.x, me.location.Y, 0, 0, me.size, CopyPixelOperation.SourceCopy)<br />
<br />
pic.save("C:\test.jpg", ImageFormat.Jpeg)

Please check out my articles:
The ANZAC's articles

its giving a few probs:

a) If the form is in the background then the screen shot contains an image on the contents of the screen rather then the form. I want to take a shot of the form while having it in the background.
b) Sometimes it just gives a plain white image. Any idea why that would be?

Thanks.

i am creting exe (package) in vb.net that has crystal reports. do i need to install Crystal Reports in client machine to execute it.??

You will need to distribute the Crystal Report Merge Modules with your app. You can get them from the BusinessObjects.com website

Steve Jowett
-------------------------
Sometimes a man who deserves to be looked down upon because he is a fool, is only despised only because he is an 'I.T. Consultant'

thax

i did it adding prerequisites..... and works...

hi
is it necessary to install crystal report in the client machine to execute the crystal report
through vb.net exe/package....???

Thanx

Jayesh Talsaniya

Hi,

runtimes files on the target machine are required, you could distribute the required files by building a setup project (File > Add Project > Setup ...)

Right mouse on the Setup Project in the Solution explorer window > Add > Merge Module... > select Microsoft_VC80_DebugCRT_x86.msm

for more details plz go to http://msdn2.microsoft.com/en-us/library/ms225293(VS.80).aspx[^]

Good Luck Wink | ;)

,
NajiCo

It's nice 2b important, but it's more important 2b nice...

thank you for taking interest in my problem.

if i add Microsoft_VC80_DebugCRT_x86.msm in the package then do i need to install runtime in the client machine..

thanx agian.

Nope, this Merge Module contains all that is required

Steve Jowett
-------------------------
Sometimes a man who deserves to be looked down upon because he is a fool, is only despised only because he is an 'I.T. Consultant'

Thank You. Smile | :)

Hi again,

This will help you too http://www.businessobjects.com/global/pdf/dev_zone/vs2005_whats_new.pdf[^]

Enjoy Smile | :)

NajiCo

It's nice 2b important, but it's more important 2b nice...

can i know how to save the time a card is scanned using vb.net.
example: a employee scan their id card and the system need to save time the card was scanned and save it in the database.
can it be done?

Depends, obviously the card reader can detect when a card is scanned. In this case you should be able to have a feild in your database that is set as a datetime and then simply update it with datetime.now when the card is scanned. You can find out how to do that in google.

Please check out my articles:
The ANZAC's articles

thank you a lots

Hi Friend..
I have one datagrid and in that i have taken one Template Column containing label control. I want to blink the text clot of that label. Can u help me out to do this task?

Gurudatta B. Shelke