下面的屏幕截图显示了ListView.GetItemAt
方法的问题。
设计器代码
this.listView1 = new System.Windows.Forms.ListView();
this.SuspendLayout();
//
// listView1
//
this.listView1.Dock = System.Windows.Forms.DockStyle.Fill;
this.listView1.Location = new System.Drawing.Point(0, 0);
this.listView1.Name = "listView1";
this.listView1.Size = new System.Drawing.Size(717, 511);
this.listView1.TabIndex = 0;
this.listView1.UseCompatibleStateImageBehavior = false;
//
// Form1
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(717, 511);
this.Controls.Add(this.listView1);
this.Name = "Form1";
this.Text = "Form1";
this.Load += new System.EventHandler(this.Form1_Load);
this.ResumeLayout(false);
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代码隐藏
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
listView1.OwnerDraw = true;
listView1.View = View.LargeIcon;
listView1.DrawItem += ListView1_DrawItem;
listView1.MouseMove += ListView1_MouseMove;
for (int i = 1; i <= 10; ++i)
{
listView1.Items.Add($"item {i}", 0);
}
}
private void ListView1_MouseMove(object sender, MouseEventArgs e)
{
ListViewItem item = listView1.GetItemAt(e.X, e.Y);
if (LastHoveredItem != null)
{
ListViewItem item2 = LastHoveredItem;
LastHoveredItem = null;
listView1.Invalidate(item2.Bounds);
}
if (item != null)
{
LastHoveredItem = item;
listView1.Invalidate(item.Bounds);
}
else
{
LastHoveredItem = null;
}
}
private void ListView1_DrawItem(object sender, DrawListViewItemEventArgs e)
{
if (LastHoveredItem == e.Item)
{
e.Graphics.FillRectangle(Brushes.Yellow, e.Item.Bounds);
}
else
{
e.Graphics.FillRectangle(Brushes.Green, e.Item.Bounds);
}
}
internal ListViewItem LastHoveredItem = null;
型
截图
鼠标光标下的矩形应该是黄色的,但它和其他未悬停的矩形一样是绿色的。
的数据
3条答案
按热度按时间d7v8vwbk1#
ListView.GetItemAt
如果图标的标签或图标矩形包含点,则获取项目。这不是您要查找的内容。您需要检查整个项目。您可以使用以下方法之一:
ListView.GetItemRect(int, ItemBoundsPortion)
个ListViewItem.GetBounds(ItemBoundsPortion)
示例-检测DrawItem中的热门项目
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cmssoen22#
为什么不能使用listView1.FocusedItem属性
qnyhuwrf3#
分享一个在鼠标光标下找到ListViewSubItem的替代解决方案,归功于Fredrik Mörk(appsloveworld.com):
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