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Code Issues Releases Wiki Activity

Added support for drag/drop to ShellNamespaceTreeControl

pull/142/head
dahall 2020-07-01 15:04:47 -06:00
parent 770862c69c
commit c88bf0acfd
1 changed files with 53 additions and 1 deletions
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54
WIndows.Forms/Controls/ShellNamespaceTreeControl.cs
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@ -148,7 +148,7 @@ namespace Vanara.Windows.Forms
[ToolboxItem(true), ToolboxBitmap(typeof(ShellNamespaceTreeControl), "ShellNamespaceTreeControl.bmp")]
[Description("A Shell object that displays a tree of shell items.")]
[ComVisible(true), Guid("0639efb8-7701-472e-863d-d6fbc543d736")]
public class ShellNamespaceTreeControl : Control, PInvoke.Shell32.IServiceProvider, INameSpaceTreeControlEvents
public class ShellNamespaceTreeControl : Control, PInvoke.Shell32.IServiceProvider, INameSpaceTreeControlEvents, INameSpaceTreeControlDropHandler //, INameSpaceTreeAccessible
{
private const NSTCSTYLE defaultStyle = NSTCSTYLE.NSTCS_HASEXPANDOS | NSTCSTYLE.NSTCS_ROOTHASEXPANDO | NSTCSTYLE.NSTCS_FADEINOUTEXPANDOS |
NSTCSTYLE.NSTCS_NOINFOTIP | NSTCSTYLE.NSTCS_ALLOWJUNCTIONS | NSTCSTYLE.NSTCS_SHOWSELECTIONALWAYS | NSTCSTYLE.NSTCS_FULLROWSELECT |
@ -862,6 +862,58 @@ namespace Vanara.Windows.Forms
NSTCITEMSTATE GetState(IShellItem shi) => pCtrl.GetItemState(shi, NSTCITEMSTATE_ALL, out var state).Succeeded ? state : 0;
}
HRESULT INameSpaceTreeControlDropHandler.OnDragEnter(IShellItem psiOver, IShellItemArray psiaData, bool fOutsideSource, uint grfKeyState, ref uint pdwEffect)
{
var ido = new DataObject();
ido.SetFileDropList(GetStringCollection(psiaData));
var dragEvent = new DragEventArgs(ido, (int)grfKeyState, MousePosition.X, MousePosition.Y, DragDropEffects.All, (DragDropEffects)pdwEffect);
base.OnDragEnter(dragEvent);
pdwEffect = (uint)dragEvent.Effect;
return HRESULT.S_OK;
}
private static System.Collections.Specialized.StringCollection GetStringCollection(IShellItemArray psiaData)
{
using var shiArray = new ShellItemArray(psiaData);
var fileList = new System.Collections.Specialized.StringCollection();
fileList.AddRange(shiArray.Select(shi => shi.ParsingName).ToArray());
return fileList;
}
HRESULT INameSpaceTreeControlDropHandler.OnDragOver(IShellItem psiOver, IShellItemArray psiaData, uint grfKeyState, ref uint pdwEffect)
{
var ido = new DataObject();
ido.SetFileDropList(GetStringCollection(psiaData));
var dragEvent = new DragEventArgs(ido, (int)grfKeyState, MousePosition.X, MousePosition.Y, DragDropEffects.All, (DragDropEffects)pdwEffect);
base.OnDragOver(dragEvent);
pdwEffect = (uint)dragEvent.Effect;
return HRESULT.S_OK;
}
HRESULT INameSpaceTreeControlDropHandler.OnDragPosition(IShellItem psiOver, IShellItemArray psiaData, int iNewPosition, int iOldPosition) => HRESULT.E_FAIL;
HRESULT INameSpaceTreeControlDropHandler.OnDrop(IShellItem psiOver, IShellItemArray psiaData, int iPosition, uint grfKeyState, ref uint pdwEffect)
{
var ido = new DataObject();
ido.SetFileDropList(GetStringCollection(psiaData));
var dragEvent = new DragEventArgs(ido, (int)grfKeyState, MousePosition.X, MousePosition.Y, DragDropEffects.All, (DragDropEffects)pdwEffect);
base.OnDragDrop(dragEvent);
pdwEffect = (uint)dragEvent.Effect;
return HRESULT.S_OK;
}
HRESULT INameSpaceTreeControlDropHandler.OnDropPosition(IShellItem psiOver, IShellItemArray psiaData, int iNewPosition, int iOldPosition) => HRESULT.E_FAIL;
HRESULT INameSpaceTreeControlDropHandler.OnDragLeave(IShellItem psiOver)
{
base.OnDragLeave(EventArgs.Empty);
return HRESULT.S_OK;
}
//HRESULT INameSpaceTreeAccessible.OnGetDefaultAccessibilityAction(IShellItem psi, out string pbstrDefaultAction) => throw new NotImplementedException();
//HRESULT INameSpaceTreeAccessible.OnDoDefaultAccessibilityAction(IShellItem psi) => throw new NotImplementedException();
//HRESULT INameSpaceTreeAccessible.OnGetAccessibilityRole(IShellItem psi, out object pvarRole) => throw new NotImplementedException();
}
/// <summary>Event arguments for actions against <see cref="ShellNamespaceTreeControl"/>.</summary>