Remote Desktop Client and GetScrollInfo method C#

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Hello at all,
I have a custom OnScroll event in my ListView.
For this event I use the GetScrollInfo method (user32.dll).
But, when I use rdp client for use my application on the cloud,
I receive this error: 1421 "ERROR CONTROL ID NOT FOUND".

This is the code:

C#

struct SCROLLINFO {
    public uint cbSize;    // set to sizeof (SCROLLINFO)
    public uint fMask;     // values to set or get
    public int nMin;       // minimum range value
    public int nMax;       // maximum range value
    public uint nPage;     // page size
    public int nPos;       // current position
    public int nTrackPos;  // current tracking position
}

C#

[DllImport("user32.dll")]
[return: MarshalAs(UnmanagedType.Bool)]
private static extern bool GetScrollInfo(IntPtr hwnd, int fnBar, ref SCROLLINFO lpsi);

C#

private ScrollEventType GestisciScroll(ScrollEventType TipoScrollPrefedinito) {
    SCROLLINFO _info = new SCROLLINFO();
    _info.fMask = (uint)SIF_ALL;
    ScrollEventType _typeScroll = TipoScrollPrefedinito;
    if (GetScrollInfo(this.Handle, SB_VERT, ref _info)) {
        if ((_info.nPos + _info.nPage) > _info.nMax)
            _typeScroll = ScrollEventType.Last;
        else if (_info.nPos == 0)
            _typeScroll = ScrollEventType.First;
    } else {
        System.Diagnostics.Trace.WriteLine(Marshal.GetLastWin32Error());      
        // ERROR 1421 HERE!
    }
    return _typeScroll;
}

Can you help me?
Thank you.

Posted 22-May-13 3:42am

Dario Michael

Updated 5-Jun-13 0:07am

v4

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Comments

Sunasara Imdadhusen 5-Jun-13 8:56am

Are you using any third party library?

Dario Michael 7-Jun-13 5:08am

No. Is a normal ListView.
But I use this application in remote desktop.

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baoliveira · Answer 1 · 2013-08-29T05:32:00

Hi,

I have this working, try it.

C#

private struct ScrollInfoStruct
        {
            public int cbSize;
            public int fMask;
            public int nMin;
            public int nMax;
            public in<b></b>t nPage;
            public int nPos;
            public int nTrackPos;
        }

[DllImport("user32.dll", SetLastError=true) ]
private static extern int GetScrollInfo(IntPtr hWnd, int n, ref ScrollInfoStruct lpScrollInfo );