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-******@online.microsoft.com> wrote in message news:VQ**************@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" <en*******@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: <ee**************@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 3 1517
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.He ight)
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-******@online.microsoft.com> wrote in message news:VQ**************@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" <en*******@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: <ee**************@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
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" <Da********@discussions.microsoft.com> wrote in message
news:4F**********************************@microsof t.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.He ight) 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-******@online.microsoft.com> wrote in message >news:VQ**************@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" <en*******@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: <ee**************@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
Thanks for the bug report Scott - the fix will be in today's build.
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
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" <Da********@discussions.microsoft.com> wrote in message news:4F**********************************@microsof t.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.He ight) 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-******@online.microsoft.com> wrote in message >news:VQ**************@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" <en*******@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: <ee**************@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 This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics
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