C# 如何从listview隐藏复选框
我只需要隐藏指定行中的复选框。这有可能吗?这些行的标题是什么?如果是,请考虑在ListVIEW中使用。 编辑:C# 如何从listview隐藏复选框,c#,winforms,user-interface,C#,Winforms,User Interface,我只需要隐藏指定行中的复选框。这有可能吗?这些行的标题是什么?如果是,请考虑在ListVIEW中使用。 编辑: 我不知道有什么方法可以只在listview项的子集上显示复选框。您的另一种选择是将您想要的项目的前景色设置为灰色,并且在ItemCheck事件中,如果选中这些项目,则将其checkstate重置为unchecked。您将需要实现一个所有者绘制的列表框。我有一个可以显示所有项目的图标和复选框,但是你可以很容易地修改它,只显示特定项目的复选框 public class IconizedCh
我不知道有什么方法可以只在listview项的子集上显示复选框。您的另一种选择是将您想要的项目的前景色设置为灰色,并且在ItemCheck事件中,如果选中这些项目,则将其checkstate重置为unchecked。您将需要实现一个所有者绘制的列表框。我有一个可以显示所有项目的图标和复选框,但是你可以很容易地修改它,只显示特定项目的复选框
public class IconizedCheckedListBox : ListBox
{
public IconizedCheckedListBox()
: base()
{
DrawMode = DrawMode.OwnerDrawVariable;
DoubleBuffered = true;
}
protected override void OnDrawItem(DrawItemEventArgs e)
{
Graphics g = e.Graphics;
g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias;
using (SolidBrush b = new SolidBrush(BackColor))
g.FillRectangle(b, e.Bounds);
//e.DrawBackground();
//e.DrawFocusRectangle();
if (e.Index < Items.Count && e.Index != -1)
{
IconizedCheckedListBoxItem item = (IconizedCheckedListBoxItem)Items[e.Index];
Rectangle checkBounds = e.Bounds;
checkBounds.X += kCheckboxPadding;
checkBounds.Y += (checkBounds.Height - kCheckboxSize) / 2;
checkBounds.Width = kCheckboxSize;
checkBounds.Height = kCheckboxSize;
CheckBoxRenderer.DrawCheckBox(g, checkBounds.Location,
item.Checked?CheckBoxState.CheckedNormal:CheckBoxState.UncheckedNormal);
using (SolidBrush b = new SolidBrush(ForeColor))
{
StringFormat format = new StringFormat();
format.LineAlignment = StringAlignment.Center;
format.Alignment = StringAlignment.Near;
Rectangle textBounds = e.Bounds;
textBounds.X += item.Icon.Width + 2*kCheckboxPadding + kCheckboxSize;
textBounds.Y += 1;
textBounds.Width -= item.Icon.Width;
textBounds.Height -= 1;
Font f;
if (item.Checked)
f = new Font(Font, FontStyle.Bold);
else
f = Font;
g.DrawString(item.Data.ToString(), f, b, textBounds, format);
}
Image icon;
if (!item.Checked)
icon = Utilities.Utilities.WashOutImage(item.Icon);
else
icon = item.Icon;
g.DrawImage(icon, e.Bounds.X + 2 * kCheckboxPadding + kCheckboxSize, e.Bounds.Y);
}
}
protected override void OnMeasureItem(MeasureItemEventArgs e)
{
e.ItemHeight = kItemHeight;
}
protected override void OnMouseClick(MouseEventArgs e)
{
if (e.Button == MouseButtons.Left)
{
int idx = IndexFromPoint(e.Location);
if (idx != -1)
{
IconizedCheckedListBoxItem item = (IconizedCheckedListBoxItem)Items[idx];
item.Checked = !item.Checked;
if (ItemCheck != null)
{
ItemCheckEventArgs args = new ItemCheckEventArgs(
idx,
item.Checked ? CheckState.Checked : CheckState.Unchecked,
CheckState.Indeterminate);
ItemCheck(this, args);
}
Invalidate();
}
}
base.OnMouseClick(e);
}
/// <summary>
/// This is called AFTER the check state has been updated
/// </summary>
public event ItemCheckEventHandler ItemCheck;
private const int kItemHeight = 32;
private const int kCheckboxSize = 13;
private const int kCheckboxPadding = 4;
}
public class IconizedCheckedListBoxItem
{
public IconizedCheckedListBoxItem(Image inIcon, object inData)
{
Icon = inIcon;
Data = inData;
Checked = false;
}
public override string ToString()
{
return Data.ToString();
}
public Image Icon;
public object Data;
public bool Checked;
}
公共类图标化checkedlistbox:ListBox
{
公共图标化checkedlistbox()
:base()
{
DrawMode=DrawMode.OwnerDrawVariable;
双缓冲=真;
}
受保护的覆盖无效OnDrawItem(DrawItemEventArgs e)
{
图形g=e.图形;
g、 SmoothingMode=System.Drawing.Drawing2D.SmoothingMode.AntiAlias;
使用(SolidBrush b=新的SolidBrush(背景色))
g、 圆角矩形(b,e.Bounds);
//e、 牵引杆接地();
//e、 DrawFocusRectangle();
如果(e.Index
没有行不是标题,它们只是不应选择的行。客户希望隐藏复选框OP要求的是“ListView”而不是“ListBox”。这不是一个有效的答案。