Revision: 137
http://sourceforge.net/p/mwinapi/code/137
Author: schierlm
Date: 2015-12-11 17:45:31 +0000 (Fri, 11 Dec 2015)
Log Message:
-----------
SystemListView: added methods to retrieve and modify the selection
% pushed from GitHub
% Author: fk <enoon1 at arcor.de>
% Date: Fri Dec 11 15:01:16 2015 +0100
Modified Paths:
--------------
trunk/ManagedWinapi/Windows/SystemListView.cs
Modified: trunk/ManagedWinapi/Windows/SystemListView.cs
===================================================================
--- trunk/ManagedWinapi/Windows/SystemListView.cs 2015-12-11 17:45:25 UTC (rev 136)
+++ trunk/ManagedWinapi/Windows/SystemListView.cs 2015-12-11 17:45:31 UTC (rev 137)
@@ -59,6 +59,17 @@
}
/// <summary>
+ /// The number of selected items (icons) in this list view.
+ /// </summary>
+ public int SelectedItemsCount
+ {
+ get
+ {
+ return sw.SendGetMessage(LVM_GETSELECTEDCOUNT);
+ }
+ }
+
+ /// <summary>
/// An item of this list view.
/// </summary>
public SystemListViewItem this[int index]
@@ -70,6 +81,69 @@
}
/// <summary>
+ /// Ensures that a list-view item is either entirely or partially visible, scrolling the list-view control if necessary.
+ /// </summary>
+ /// <param name="rowIndex">Index of the row.</param>
+ /// <param name="entirelyVisible">if set to <c>true</c> the item will be entirely visible.</param>
+ public void EnsureItemIsVisible(int rowIndex, bool entirelyVisible)
+ {
+ SystemWindow.SendMessage(new HandleRef(sw, sw.HWnd), LVM_ENSUREVISIBLE, new IntPtr(rowIndex), new IntPtr(entirelyVisible ? 1 : 0));
+ }
+
+ /// <summary>
+ /// Sets the focused-state of the item.
+ /// </summary>
+ /// <param name="rowIndex">Index of the row.</param>
+ /// <param name="focused">if set to <c>true</c> the item will be focused.</param>
+ public void SetItemFocusedState(int rowIndex, bool focused)
+ {
+ LVITEM lvi = new LVITEM();
+ lvi.stateMask = (uint)(ListViewItemState.LVIS_FOCUSED);
+ lvi.state = focused ? (uint)(ListViewItemState.LVIS_FOCUSED) : 0;
+ ProcessMemoryChunk lc = ProcessMemoryChunk.AllocStruct(sw.Process, lvi);
+ SystemWindow.SendMessage(new HandleRef(sw, sw.HWnd), LVM_SETITEMSTATE, new IntPtr(rowIndex), lc.Location);
+ lc.Dispose();
+ }
+
+ /// <summary>
+ /// Sets the selected-state of the item.
+ /// </summary>
+ /// <param name="rowIndex">Index of the row.</param>
+ /// <param name="selected">if set to <c>true</c> the item will be selected.</param>
+ public void SetItemSelectedState(int rowIndex, bool selected)
+ {
+ LVITEM lvi = new LVITEM();
+ lvi.stateMask = (uint)(ListViewItemState.LVIS_SELECTED);
+ lvi.state = selected ? (uint)(ListViewItemState.LVIS_SELECTED) : 0;
+ ProcessMemoryChunk lc = ProcessMemoryChunk.AllocStruct(sw.Process, lvi);
+ SystemWindow.SendMessage(new HandleRef(sw, sw.HWnd), LVM_SETITEMSTATE, new IntPtr(rowIndex), lc.Location);
+ lc.Dispose();
+ }
+
+ /// <summary>
+ /// Clears the current selection by unselecting all selected rows.
+ /// </summary>
+ public void ClearSelection()
+ {
+ for (int rowIndex = 0; rowIndex < this.Count; rowIndex++)
+ {
+ SetItemSelectedState(rowIndex, false);
+ }
+ }
+
+ /// <summary>
+ /// Sets the given row as single-selection and ensures that the row is visible.
+ /// </summary>
+ /// <param name="rowIndex">Index of the row ttaht should be highlighted.</param>
+ public void HighlightRow(int rowIndex)
+ {
+ ClearSelection();
+ SetItemSelectedState(rowIndex, true);
+ SetItemFocusedState(rowIndex, true);
+ EnsureItemIsVisible(rowIndex, false);
+ }
+
+ /// <summary>
/// A subitem (a column value) of an item of this list view.
/// </summary>
public SystemListViewItem this[int index, int subIndex]
@@ -140,7 +214,10 @@
LVM_GETITEMPOSITION = (0x1000 + 16),
LVM_GETITEMCOUNT = (0x1000 + 4),
LVM_GETITEM = 0x1005,
- LVM_GETCOLUMN = (0x1000 + 25);
+ LVM_ENSUREVISIBLE = (0x1000 + 19),
+ LVM_GETCOLUMN = (0x1000 + 25),
+ LVM_SETITEMSTATE = (0x1000 + 43),
+ LVM_GETSELECTEDCOUNT = (0x1000 + 50);
private static readonly uint LVIF_TEXT = 0x1,
LVIF_IMAGE = 0x2,
@@ -177,6 +254,13 @@
#endregion
}
+ [Flags]
+ internal enum ListViewItemState
+ {
+ LVIS_FOCUSED = 0x0001,
+ LVIS_SELECTED = 0x0002
+ }
+
/// <summary>
/// An item of a list view.
/// </summary>
@@ -207,6 +291,16 @@
public int Image { get { return image; } }
/// <summary>
+ /// The appearance of a selected item depends on whether it has the focus and also on the system colors used for selection.
+ /// </summary>
+ public bool IsSelected { get { return (state & (uint)ListViewItemState.LVIS_SELECTED) != 0; } }
+
+ /// <summary>
+ /// The item has the focus, so it is surrounded by a standard focus rectangle. Although more than one item may be selected, only one item can have the focus.
+ /// </summary>
+ public bool IsFocused { get { return (state & (uint)ListViewItemState.LVIS_FOCUSED) != 0; } }
+
+ /// <summary>
/// State bits of this item.
/// </summary>
[CLSCompliant(false)]
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