PaletteSet minimum docked width

By Adam Nagy

I have a PaletteSet that contains a toolbar and its width is set to 40 pixels. This works fine in AutoCAD 2008, but in AutoCAD 2011 I cannot make the width smaller than 150 pixels when the PaletteSet is docked.

Solution

In AutoCAD 2009 the minimum docked width of dockable windows including PaletteSets has been changed from 40 to 150 pixels and it is so in AutoCAD 2011 as well.

In AutoCAD 2012 however a new ARX function is being introduced which can override this value:

bool AdUiSetDockBarMinWidth(int width)

You can also use it from .NET via P/Invoke:

public class Commands
{
  PaletteSet ps;
 
  // The function signature passed in for EntryPoint
  // is different in case of AutoCAD x64
  [DllImport(
    "adui18.dll", CallingConvention = CallingConvention.Cdecl, 
    EntryPoint = "?AdUiSetDockBarMinWidth@@YA_NH@Z")]
  public static extern bool AdUiSetDockBarMinWidth(int width);
 
  [CommandMethod("MyPalette")]
  public void MyPalette()
  {
    AdUiSetDockBarMinWidth(40);
 
    if (ps == null)
    {
      ps = new PaletteSet("My Palette 1");
      ps.MinimumSize = new System.Drawing.Size(30, 300);
      ps.Dock = DockSides.Top;
      MyControl1 myCtrl = new MyControl1();
      myCtrl.Dock = System.Windows.Forms.DockStyle.Fill;
      ps.Add("test", myCtrl);
    }
    ps.Visible = true;
  }
}