private void OnWMGetMinMaxInfo(ref Message m)
{
Telerik.WinControls.NativeMethods.MINMAXINFO structure = (Telerik.WinControls.NativeMethods.MINMAXINFO)Marshal.PtrToStructure(m.LParam, typeof(Telerik.WinControls.NativeMethods.MINMAXINFO));
if (this.Form.IsMdiChild)
{
structure.ptMaxTrackSize.x = Math.Max(structure.ptMaxTrackSize.x, structure.ptMaxSize.x);
}
else if (!this.Form.IsMdiChild && this.IsMaximized && !DWMAPI.IsCompositionEnabled)
{
structure.ptMaxTrackSize.y = this.GetMaximumFormHeightAccordingToCurrentScreen();
if (Environment.OSVersion.Version.Major == 5 && Environment.OSVersion.Version.Minor == 1)
{
Screen screen = Screen.FromControl((Control)this.Form);
if (screen != null)
{
structure.ptMaxPosition.y = screen.WorkingArea.Y - SystemInformation.FrameBorderSize.Height;
}
}
}
structure.ptMinTrackSize.x = SystemInformation.MinimumWindowSize.Width;
structure.ptMinTrackSize.y = this.ClientMargin.Vertical;
MinMaxInfo minMaxInfo = new MinMaxInfo();
minMaxInfo.MaxPosition = new Point(structure.ptMaxPosition.x, structure.ptMaxPosition.y);
minMaxInfo.MaxTrackSize = new Size(structure.ptMaxTrackSize.x, structure.ptMaxTrackSize.y);
minMaxInfo.MinTrackSize = new Size(structure.ptMinTrackSize.x, structure.ptMinTrackSize.y);
minMaxInfo.MaxSize = new Size(structure.ptMaxSize.x, structure.ptMaxSize.y);
minMaxInfo.SizeReserved = new Size(structure.ptReserved.x, structure.ptReserved.y);
this.OnGetMinMaxInfo(minMaxInfo);
structure.ptMaxPosition.x = minMaxInfo.MaxPosition.X;
structure.ptMaxPosition.y = minMaxInfo.MaxPosition.Y;
structure.ptMaxTrackSize.x = minMaxInfo.MaxTrackSize.Width;
structure.ptMaxTrackSize.y = minMaxInfo.MaxTrackSize.Height;
structure.ptMinTrackSize.x = minMaxInfo.MinTrackSize.Width;
structure.ptMinTrackSize.y = minMaxInfo.MinTrackSize.Height;
structure.ptMaxSize.x = minMaxInfo.MaxSize.Width;
structure.ptMaxSize.y = minMaxInfo.MaxSize.Height;
structure.ptReserved.x = minMaxInfo.SizeReserved.Width;
structure.ptReserved.y = minMaxInfo.SizeReserved.Height;
Marshal.StructureToPtr((object)structure, m.LParam, true);
this.CallBaseWndProc(ref m);
}
protected override void OnGetMinMaxInfo(MinMaxInfo minMaxInfo)
{
minMaxInfo.MinTrackSize = new Size(SystemInformation.MinimizedWindowSize.Width, 100);
base.OnGetMinMaxInfo(minMaxInfo);
}
/// <summary>
/// This event is fired when the WM_GETMINMAXINFO message is sent to the form.
/// </summary>
/// <param name="minMaxInfo">Contains information about the position, maximum/minimum size of the form etc.
/// Can be modified to adjust the settings applied to the form.</param>
protected virtual void OnGetMinMaxInfo(MinMaxInfo minMaxInfo)
{
}