>Thanks Peter, it works. I have another question for you. What does the
>clip rectangle passed on the 5th argument does?
>
>Thanks
>Tony
>
>
>"Peter Huang [MSFT]" <v-phu***@online.microsoft.com> wrote in message
>news:VQ757BURDHA.1720@cpmsftngxa09.phx.gbl...
>> Hi Tony,
>>
>> I consult the MSDN and find that the RECT structure required by the ?
>> °ScrollWindowEx¡± API is different from the class ¡°Rectangle¡±. I think
>> you may declare your ¡°ScrollWindowEx¡± API as follows.
>> public class win32
>> {
>> [DllImport("user32.dll")]
>> public static extern int ScrollWindowEx(
>> IntPtr hWnd,
>> int dx,
>> int dy,
>> [MarshalAs(UnmanagedType.Struct)] ref Rectangle prcScroll,
>> [MarshalAs(UnmanagedType.Struct)] ref Rectangle prcClip,
>> IntPtr hrgnUpdate,
>> [MarshalAs(UnmanagedType.Struct)] out Rectangle prcUpdate,
>> [MarshalAs(UnmanagedType.U4)] int flags);
>>
>> }
>> Then you may invoke the API as below.
>> private void button1_Click(object sender, System.EventArgs e)
>> {
>> Rectangle rt = new Rectangle();
>> Rectangle rtout = new Rectangle(0,0,10,10);
>> Rectangle rtin = new
>> Rectangle(20,20,richTextBox1.Width,richTextBox1.He ight);
>> int rr=win32.ScrollWindowEx(richTextBox1.Handle,0,10,r ef rtin,ref
>> rt,IntPtr.Zero,out rtout,0);
>> System.Console.WriteLine(rr.ToString());
>> }
>>
>> Hope this will help.
>>
>> Best regards,
>> Peter Huang
>>
>> Regards,
>>
>> Peter Huang
>> =============
>> This posting is provided "AS IS" with no warranties, and confers no
>rights.
>>
>> --------------------
>> >From: "Tony" <engine***@hotmail.com>
>> >Subject: Calling the ScrollWindowEx API
>> >Date: Fri, 4 Jul 2003 08:45:32 +0800
>> >Lines: 21
>> >X-Priority: 3
>> >X-MSMail-Priority: Normal
>> >X-Newsreader: Microsoft Outlook Express 6.00.3790.0
>> >X-MimeOLE: Produced By Microsoft MimeOLE V6.00.3790.0
>> >Message-ID: <ee1WWWcQDHA.2***@TK2MSFTNGP10.phx.gbl>
>> >Newsgroups: microsoft.public.dotnet.languages.csharp
>> >NNTP-Posting-Host: cm203-168-247-148.hkcable.com.hk 203.168.247.148
>> >Path: cpmsftngxa09.phx.gbl!TK2MSFTNGP08.phx.gbl!TK2MSFTN GP10.phx.gbl
>> >Xref: cpmsftngxa09.phx.gbl

>> >X-Tomcat-NG: microsoft.public.dotnet.languages.csharp
>> >
>> >Hi, I am having problem to scroll only a partion of a window using the
>> >ScrollWindowEx api function. The code is below and any help is pleased.
>> >Thanks in advance.
>> >
>> >
>> >[DllImport("user32.dll")]
>> >private extern int ScrollWindowEx (IntPtr handle, int dx, int dy,
>Rectangle
>> >lprcScroll , Rectangle lprcClip, IntPtr hrgnUpdate, out Rectangle
>> >lprcUpdate, int fuScroll);
>> >
>> >Rectangle rt;
>> >
>> >// This works
>> >ScrollWindowEx(Handle, 0, 30, Rectangle.Empty, Rectangle.Empty,
>> IntPtr.Zero,
>> >out rt, 0);
>> >
>> >// This doesn't work
>> >ScrollWindowEx(Handle, 0, 30, new Rectangle(20, 20, ClientSize.Width,
>> >ClientSize.Height), Rectangle.Empty, IntPtr.Zero, out rt, 0);

"Scott Gunn" wrote:

> Hello all
>
> I'm trying to use the scrollwindowex api however I have the same problem as
> this guy had. There is an answer here in the reply. I just need some help
> converting it to VB.Net
>
> >Thanks Peter, it works. I have another question for you. What does the
> >clip rectangle passed on the 5th argument does?
> >
> >Thanks
> >Tony
> >
> >
> >"Peter Huang [MSFT]" <v-phu***@online.microsoft.com> wrote in message
> >news:VQ757BURDHA.1720@cpmsftngxa09.phx.gbl...
> >> Hi Tony,
> >>
> >> I consult the MSDN and find that the RECT structure required by the ?
> >> °ScrollWindowEx¡± API is different from the class ¡°Rectangle¡±. I think
> >> you may declare your ¡°ScrollWindowEx¡± API as follows.
> >> public class win32
> >> {
> >> [DllImport("user32.dll")]
> >> public static extern int ScrollWindowEx(
> >> IntPtr hWnd,
> >> int dx,
> >> int dy,
> >> [MarshalAs(UnmanagedType.Struct)] ref Rectangle prcScroll,
> >> [MarshalAs(UnmanagedType.Struct)] ref Rectangle prcClip,
> >> IntPtr hrgnUpdate,
> >> [MarshalAs(UnmanagedType.Struct)] out Rectangle prcUpdate,
> >> [MarshalAs(UnmanagedType.U4)] int flags);
> >>
> >> }
> >> Then you may invoke the API as below.
> >> private void button1_Click(object sender, System.EventArgs e)
> >> {
> >> Rectangle rt = new Rectangle();
> >> Rectangle rtout = new Rectangle(0,0,10,10);
> >> Rectangle rtin = new
> >> Rectangle(20,20,richTextBox1.Width,richTextBox1.He ight);
> >> int rr=win32.ScrollWindowEx(richTextBox1.Handle,0,10,r ef rtin,ref
> >> rt,IntPtr.Zero,out rtout,0);
> >> System.Console.WriteLine(rr.ToString());
> >> }
> >>
> >> Hope this will help.
> >>
> >> Best regards,
> >> Peter Huang
> >>
> >> Regards,
> >>
> >> Peter Huang
> >> =============
> >> This posting is provided "AS IS" with no warranties, and confers no
> >rights.
> >>
> >> --------------------
> >> >From: "Tony" <engine***@hotmail.com>
> >> >Subject: Calling the ScrollWindowEx API
> >> >Date: Fri, 4 Jul 2003 08:45:32 +0800
> >> >Lines: 21
> >> >X-Priority: 3
> >> >X-MSMail-Priority: Normal
> >> >X-Newsreader: Microsoft Outlook Express 6.00.3790.0
> >> >X-MimeOLE: Produced By Microsoft MimeOLE V6.00.3790.0
> >> >Message-ID: <ee1WWWcQDHA.2***@TK2MSFTNGP10.phx.gbl>
> >> >Newsgroups: microsoft.public.dotnet.languages.csharp
> >> >NNTP-Posting-Host: cm203-168-247-148.hkcable.com.hk 203.168.247.148
> >> >Path: cpmsftngxa09.phx.gbl!TK2MSFTNGP08.phx.gbl!TK2MSFTN GP10.phx.gbl
> >> >Xref: cpmsftngxa09.phx.gbl
> microsoft.public.dotnet.languages.csharp:30519
> >> >X-Tomcat-NG: microsoft.public.dotnet.languages.csharp
> >> >
> >> >Hi, I am having problem to scroll only a partion of a window using the
> >> >ScrollWindowEx api function. The code is below and any help is pleased.
> >> >Thanks in advance.
> >> >
> >> >
> >> >[DllImport("user32.dll")]
> >> >private extern int ScrollWindowEx (IntPtr handle, int dx, int dy,
> >Rectangle
> >> >lprcScroll , Rectangle lprcClip, IntPtr hrgnUpdate, out Rectangle
> >> >lprcUpdate, int fuScroll);
> >> >
> >> >Rectangle rt;
> >> >
> >> >// This works
> >> >ScrollWindowEx(Handle, 0, 30, Rectangle.Empty, Rectangle.Empty,
> >> IntPtr.Zero,
> >> >out rt, 0);
> >> >
> >> >// This doesn't work
> >> >ScrollWindowEx(Handle, 0, 30, new Rectangle(20, 20, ClientSize.Width,
> >> >ClientSize.Height), Rectangle.Empty, IntPtr.Zero, out rt, 0);
>
> URL: http://www.pcreview.co.uk/forums/thread-1349023.php
>
> I have the same problem
>
> This works:
> ScrollWindowEx(Handle, 0, 30, Rectangle.Empty, Rectangle.Empty, IntPtr.Zero,
> Rectangle.Empty, 0)
>
> This doesn't work
> ScrollWindowEx(Handle, 0, 30, new Rectangle(20, 20, ClientSize.Width,
> ClientSize.Height), Rectangle.Empty, IntPtr.Zero, rectangle.empty, 0)
>
> Many Thanks
> Scott
>
>
>

"David Anton" <DavidAn***@discussions.microsoft.com> wrote in message
news:4FA9CFE3-C356-47D5-BAC8-0C61010A4F99@microsoft.com...
> Our Instant VB C# to VB.NET converter (www.instantvb.com) produces the
> following (assuming I've pasted the C# code correctly):
>
> Public Class win32
> <DllImport("user32.dll")> _
> Public Shared Function ScrollWindowEx(ByVal hWnd As IntPtr, ByVal dx As
> Integer, ByVal dy As Integer, <MarshalAs(UnmanagedType.Struct)> ByRef
> prcScroll As Rectangle, <MarshalAs(UnmanagedType.Struct)> ByRef prcClip As
> Rectangle, ByVal hrgnUpdate As IntPtr,
> <System.Runtime.InteropServices.Out()>
> (MarshalAs(UnmanagedType.Struct)) ByRef prcUpdate As Rectangle,
> <MarshalAs(UnmanagedType.U4)> ByVal flags As Integer) As Integer
>
> End Function
> End Class
>
> Private Sub button1_Click(ByVal sender As Object, ByVal e As
> System.EventArgs)
>        Dim rt As Rectangle = New Rectangle()
>        Dim rtout As Rectangle = New Rectangle(0,0,10,10)
>        Dim rtin As Rectangle = New
> Rectangle(20,20,richTextBox1.Width,richTextBox1.Height)
>        Dim rr As
> Integer=win32.ScrollWindowEx(richTextBox1.Handle,0,10,rtin,rt,IntPtr.Zero,rtout,0)
>        System.Console.WriteLine(rr.ToString())
> End Sub
>
> David Anton
> www.tangiblesoftwaresolutions.com
> Home of:
> Instant C#: VB.NET to C# Converter
> Instant VB: C# to VB.NET Converter
> Instant J#: VB.NET to J# Converter
>
> "Scott Gunn" wrote:
>
>> Hello all
>>
>> I'm trying to use the scrollwindowex api however I have the same problem
>> as
>> this guy had. There is an answer here in the reply. I just need some help
>> converting it to VB.Net
>>
>> >Thanks Peter, it works. I have another question for you. What does the
>> >clip rectangle passed on the 5th argument does?
>> >
>> >Thanks
>> >Tony
>> >
>> >
>> >"Peter Huang [MSFT]" <v-phu***@online.microsoft.com> wrote in message
>> >news:VQ757BURDHA.1720@cpmsftngxa09.phx.gbl...
>> >> Hi Tony,
>> >>
>> >> I consult the MSDN and find that the RECT structure required by the ?
>> >> °ScrollWindowEx¡± API is different from the class ¡°Rectangle¡±. I
>> >> think
>> >> you may declare your ¡°ScrollWindowEx¡± API as follows.
>> >> public class win32
>> >> {
>> >> [DllImport("user32.dll")]
>> >> public static extern int ScrollWindowEx(
>> >> IntPtr hWnd,
>> >> int dx,
>> >> int dy,
>> >> [MarshalAs(UnmanagedType.Struct)] ref Rectangle prcScroll,
>> >> [MarshalAs(UnmanagedType.Struct)] ref Rectangle prcClip,
>> >> IntPtr hrgnUpdate,
>> >> [MarshalAs(UnmanagedType.Struct)] out Rectangle prcUpdate,
>> >> [MarshalAs(UnmanagedType.U4)] int flags);
>> >>
>> >> }
>> >> Then you may invoke the API as below.
>> >> private void button1_Click(object sender, System.EventArgs e)
>> >> {
>> >> Rectangle rt = new Rectangle();
>> >> Rectangle rtout = new Rectangle(0,0,10,10);
>> >> Rectangle rtin = new
>> >> Rectangle(20,20,richTextBox1.Width,richTextBox1.He ight);
>> >> int rr=win32.ScrollWindowEx(richTextBox1.Handle,0,10,r ef rtin,ref
>> >> rt,IntPtr.Zero,out rtout,0);
>> >> System.Console.WriteLine(rr.ToString());
>> >> }
>> >>
>> >> Hope this will help.
>> >>
>> >> Best regards,
>> >> Peter Huang
>> >>
>> >> Regards,
>> >>
>> >> Peter Huang
>> >> =============
>> >> This posting is provided "AS IS" with no warranties, and confers no
>> >rights.
>> >>
>> >> --------------------
>> >> >From: "Tony" <engine***@hotmail.com>
>> >> >Subject: Calling the ScrollWindowEx API
>> >> >Date: Fri, 4 Jul 2003 08:45:32 +0800
>> >> >Lines: 21
>> >> >X-Priority: 3
>> >> >X-MSMail-Priority: Normal
>> >> >X-Newsreader: Microsoft Outlook Express 6.00.3790.0
>> >> >X-MimeOLE: Produced By Microsoft MimeOLE V6.00.3790.0
>> >> >Message-ID: <ee1WWWcQDHA.2***@TK2MSFTNGP10.phx.gbl>
>> >> >Newsgroups: microsoft.public.dotnet.languages.csharp
>> >> >NNTP-Posting-Host: cm203-168-247-148.hkcable.com.hk 203.168.247.148
>> >> >Path: cpmsftngxa09.phx.gbl!TK2MSFTNGP08.phx.gbl!TK2MSFTN GP10.phx.gbl
>> >> >Xref: cpmsftngxa09.phx.gbl
>> microsoft.public.dotnet.languages.csharp:30519
>> >> >X-Tomcat-NG: microsoft.public.dotnet.languages.csharp
>> >> >
>> >> >Hi, I am having problem to scroll only a partion of a window using
>> >> >the
>> >> >ScrollWindowEx api function. The code is below and any help is
>> >> >pleased.
>> >> >Thanks in advance.
>> >> >
>> >> >
>> >> >[DllImport("user32.dll")]
>> >> >private extern int ScrollWindowEx (IntPtr handle, int dx, int dy,
>> >Rectangle
>> >> >lprcScroll , Rectangle lprcClip, IntPtr hrgnUpdate, out Rectangle
>> >> >lprcUpdate, int fuScroll);
>> >> >
>> >> >Rectangle rt;
>> >> >
>> >> >// This works
>> >> >ScrollWindowEx(Handle, 0, 30, Rectangle.Empty, Rectangle.Empty,
>> >> IntPtr.Zero,
>> >> >out rt, 0);
>> >> >
>> >> >// This doesn't work
>> >> >ScrollWindowEx(Handle, 0, 30, new Rectangle(20, 20, ClientSize.Width,
>> >> >ClientSize.Height), Rectangle.Empty, IntPtr.Zero, out rt, 0);
>>
>> URL: http://www.pcreview.co.uk/forums/thread-1349023.php
>>
>> I have the same problem
>>
>> This works:
>> ScrollWindowEx(Handle, 0, 30, Rectangle.Empty, Rectangle.Empty,
>> IntPtr.Zero,
>> Rectangle.Empty, 0)
>>
>> This doesn't work
>> ScrollWindowEx(Handle, 0, 30, new Rectangle(20, 20, ClientSize.Width,
>> ClientSize.Height), Rectangle.Empty, IntPtr.Zero, rectangle.empty, 0)
>>
>> Many Thanks
>> Scott
>>
>>
>>

"Scott Gunn" wrote:

> Hello
>
> Excellent, the conversion added some things I didn't however my orignal
> problem is still there
>
> I had to change the part:
> <System.Runtime.InteropServices.Out()> (MarshalAs(UnmanagedType.Struct))
>
> To (Guessing):
>  <System.Runtime.InteropServices.Out(), MarshalAs(UnmanagedType.Struct)>
>
> The code as is does nothing though, I also had to change the ByRef to ByVal
> and things started to happen.
> but still the problem is:
>
> This works:
> ScrollWindowEx(Handle, 0, 30, Rectangle.Empty, Rectangle.Empty, IntPtr.Zero,
> Rectangle.Empty, 0)
>
> This doesn't work:
> ScrollWindowEx(Handle, 0, 30, new Rectangle(20, 20, ClientSize.Width,
> ClientSize.Height), Rectangle.Empty, IntPtr.Zero, rectangle.empty, 0)
>
> Thanks for the conversion.
> Scott.
>
>
> "David Anton" <DavidAn***@discussions.microsoft.com> wrote in message
> news:4FA9CFE3-C356-47D5-BAC8-0C61010A4F99@microsoft.com...
> > Our Instant VB C# to VB.NET converter (www.instantvb.com) produces the
> > following (assuming I've pasted the C# code correctly):
> >
> > Public Class win32
> > <DllImport("user32.dll")> _
> > Public Shared Function ScrollWindowEx(ByVal hWnd As IntPtr, ByVal dx As
> > Integer, ByVal dy As Integer, <MarshalAs(UnmanagedType.Struct)> ByRef
> > prcScroll As Rectangle, <MarshalAs(UnmanagedType.Struct)> ByRef prcClip As
> > Rectangle, ByVal hrgnUpdate As IntPtr,
> > <System.Runtime.InteropServices.Out()>
> > (MarshalAs(UnmanagedType.Struct)) ByRef prcUpdate As Rectangle,
> > <MarshalAs(UnmanagedType.U4)> ByVal flags As Integer) As Integer
> >
> > End Function
> > End Class
> >
> > Private Sub button1_Click(ByVal sender As Object, ByVal e As
> > System.EventArgs)
> >        Dim rt As Rectangle = New Rectangle()
> >        Dim rtout As Rectangle = New Rectangle(0,0,10,10)
> >        Dim rtin As Rectangle = New
> > Rectangle(20,20,richTextBox1.Width,richTextBox1.Height)
> >        Dim rr As
> > Integer=win32.ScrollWindowEx(richTextBox1.Handle,0,10,rtin,rt,IntPtr.Zero,rtout,0)
> >        System.Console.WriteLine(rr.ToString())
> > End Sub
> >
> > David Anton
> > www.tangiblesoftwaresolutions.com
> > Home of:
> > Instant C#: VB.NET to C# Converter
> > Instant VB: C# to VB.NET Converter
> > Instant J#: VB.NET to J# Converter
> >
> > "Scott Gunn" wrote:
> >
> >> Hello all
> >>
> >> I'm trying to use the scrollwindowex api however I have the same problem
> >> as
> >> this guy had. There is an answer here in the reply. I just need some help
> >> converting it to VB.Net
> >>
> >> >Thanks Peter, it works. I have another question for you. What does the
> >> >clip rectangle passed on the 5th argument does?
> >> >
> >> >Thanks
> >> >Tony
> >> >
> >> >
> >> >"Peter Huang [MSFT]" <v-phu***@online.microsoft.com> wrote in message
> >> >news:VQ757BURDHA.1720@cpmsftngxa09.phx.gbl...
> >> >> Hi Tony,
> >> >>
> >> >> I consult the MSDN and find that the RECT structure required by the ?
> >> >> °ScrollWindowEx¡± API is different from the class ¡°Rectangle¡±. I
> >> >> think
> >> >> you may declare your ¡°ScrollWindowEx¡± API as follows.
> >> >> public class win32
> >> >> {
> >> >> [DllImport("user32.dll")]
> >> >> public static extern int ScrollWindowEx(
> >> >> IntPtr hWnd,
> >> >> int dx,
> >> >> int dy,
> >> >> [MarshalAs(UnmanagedType.Struct)] ref Rectangle prcScroll,
> >> >> [MarshalAs(UnmanagedType.Struct)] ref Rectangle prcClip,
> >> >> IntPtr hrgnUpdate,
> >> >> [MarshalAs(UnmanagedType.Struct)] out Rectangle prcUpdate,
> >> >> [MarshalAs(UnmanagedType.U4)] int flags);
> >> >>
> >> >> }
> >> >> Then you may invoke the API as below.
> >> >> private void button1_Click(object sender, System.EventArgs e)
> >> >> {
> >> >> Rectangle rt = new Rectangle();
> >> >> Rectangle rtout = new Rectangle(0,0,10,10);
> >> >> Rectangle rtin = new
> >> >> Rectangle(20,20,richTextBox1.Width,richTextBox1.He ight);
> >> >> int rr=win32.ScrollWindowEx(richTextBox1.Handle,0,10,r ef rtin,ref
> >> >> rt,IntPtr.Zero,out rtout,0);
> >> >> System.Console.WriteLine(rr.ToString());
> >> >> }
> >> >>
> >> >> Hope this will help.
> >> >>
> >> >> Best regards,
> >> >> Peter Huang
> >> >>
> >> >> Regards,
> >> >>
> >> >> Peter Huang
> >> >> =============
> >> >> This posting is provided "AS IS" with no warranties, and confers no
> >> >rights.
> >> >>
> >> >> --------------------
> >> >> >From: "Tony" <engine***@hotmail.com>
> >> >> >Subject: Calling the ScrollWindowEx API
> >> >> >Date: Fri, 4 Jul 2003 08:45:32 +0800
> >> >> >Lines: 21
> >> >> >X-Priority: 3
> >> >> >X-MSMail-Priority: Normal
> >> >> >X-Newsreader: Microsoft Outlook Express 6.00.3790.0
> >> >> >X-MimeOLE: Produced By Microsoft MimeOLE V6.00.3790.0
> >> >> >Message-ID: <ee1WWWcQDHA.2***@TK2MSFTNGP10.phx.gbl>
> >> >> >Newsgroups: microsoft.public.dotnet.languages.csharp
> >> >> >NNTP-Posting-Host: cm203-168-247-148.hkcable.com.hk 203.168.247.148
> >> >> >Path: cpmsftngxa09.phx.gbl!TK2MSFTNGP08.phx.gbl!TK2MSFTN GP10.phx.gbl
> >> >> >Xref: cpmsftngxa09.phx.gbl
> >> microsoft.public.dotnet.languages.csharp:30519
> >> >> >X-Tomcat-NG: microsoft.public.dotnet.languages.csharp
> >> >> >
> >> >> >Hi, I am having problem to scroll only a partion of a window using
> >> >> >the
> >> >> >ScrollWindowEx api function. The code is below and any help is
> >> >> >pleased.
> >> >> >Thanks in advance.
> >> >> >
> >> >> >
> >> >> >[DllImport("user32.dll")]
> >> >> >private extern int ScrollWindowEx (IntPtr handle, int dx, int dy,
> >> >Rectangle
> >> >> >lprcScroll , Rectangle lprcClip, IntPtr hrgnUpdate, out Rectangle
> >> >> >lprcUpdate, int fuScroll);
> >> >> >
> >> >> >Rectangle rt;
> >> >> >
> >> >> >// This works
> >> >> >ScrollWindowEx(Handle, 0, 30, Rectangle.Empty, Rectangle.Empty,
> >> >> IntPtr.Zero,
> >> >> >out rt, 0);
> >> >> >
> >> >> >// This doesn't work
> >> >> >ScrollWindowEx(Handle, 0, 30, new Rectangle(20, 20, ClientSize.Width,
> >> >> >ClientSize.Height), Rectangle.Empty, IntPtr.Zero, out rt, 0);
> >>
> >> URL: http://www.pcreview.co.uk/forums/thread-1349023.php
> >>
> >> I have the same problem
> >>
> >> This works:
> >> ScrollWindowEx(Handle, 0, 30, Rectangle.Empty, Rectangle.Empty,
> >> IntPtr.Zero,
> >> Rectangle.Empty, 0)
> >>
> >> This doesn't work
> >> ScrollWindowEx(Handle, 0, 30, new Rectangle(20, 20, ClientSize.Width,
> >> ClientSize.Height), Rectangle.Empty, IntPtr.Zero, rectangle.empty, 0)
> >>
> >> Many Thanks
> >> Scott
> >>
> >>
> >>
>
>
>