C#仿QQ皮肤—更新DataGridView的鼠标跟随效果
2010-05-12 21:27 苏飞 阅读(6376) 评论(8) 编辑 收藏 举报 C#仿QQ皮肤-实现原理系列文章导航
http://www.cnblogs.com/sufei/archive/2010/03/10/1682847.html
我们先来看看更新后的效果吧
其实方法很简单我们只要重写一下几个事件就行了,首先是OnCellMouseEnter事件,这个事件的做用只有一个就是保存当前的行背景色,我们都知道我们鼠标移到上方时要改变颜色,那移过后是不是还原呢,不然就成了染布了,呵呵,这个事件的做用就是记录和保存颜色一起看实现
//进入单元格时保存当前的颜色
protected override void OnCellMouseEnter(DataGridViewCellEventArgs e)
{
base.OnCellMouseEnter(e);
try
{
defaultcolor = Rows[e.RowIndex].DefaultCellStyle.BackColor;
}
catch (Exception)
{
}
}
defaultcolor是一个颜色变量用来保存默认颜色
是取得当前的默认颜色
这样每次在改变颜色之前就可以保存默认颜色了那就是defaultcolor 大家一定要记着不能把这一步写在OnCellMouseMove事件里,一定要写在OnCellMouseEnter事件里,那是因为OnCellMouseEnter在OnCellMouseMove事件之前执行,否则是取不到默认颜色的就成了染布,呵呵
那我们再来看OnCellMouseMove事件吧,它的作用只有一个移到单元格时的改变颜色
protected override void OnCellMouseMove(DataGridViewCellMouseEventArgs e)
{
base.OnCellMouseMove(e);
try
{
Rows[e.RowIndex].DefaultCellStyle.BackColor = Color.YellowGreen;
}
catch (Exception)
{
}
}
拉下来就是用OnCellMouseLeave事件还原默认颜色了
protected override void OnCellMouseLeave(DataGridViewCellEventArgs e)
{
base.OnCellMouseLeave(e);
try
{
Rows[e.RowIndex].DefaultCellStyle.BackColor = defaultcolor;
}
catch (Exception)
{
}
}
好了到这到这里工作就完成了,所有代码如下
using System.Collections.Generic;
using System.Text;
using System.Drawing;
using System.Windows.Forms;
namespace CRD.WinUI.Editors
{
public class DataGridView : System.Windows.Forms.DataGridView
{
public DataGridView()
{
this.SetStyle(ControlStyles.DoubleBuffer | ControlStyles.AllPaintingInWmPaint, true);
}
protected override void OnCreateControl()
{
this.EnableHeadersVisualStyles = false;
this.ColumnHeadersDefaultCellStyle.BackColor = Color.FromArgb(247, 246, 239);
this.ColumnHeadersBorderStyle = DataGridViewHeaderBorderStyle.Raised;
this.ColumnHeadersHeight = 26;
this.ColumnHeadersHeightSizeMode = DataGridViewColumnHeadersHeightSizeMode.DisableResizing;
this.ColumnHeadersDefaultCellStyle.Alignment = System.Windows.Forms.DataGridViewContentAlignment.MiddleCenter;
this.ColumnHeadersDefaultCellStyle.ForeColor = System.Drawing.SystemColors.WindowText;
this.ColumnHeadersDefaultCellStyle.SelectionBackColor = System.Drawing.SystemColors.Highlight;
this.ColumnHeadersDefaultCellStyle.SelectionForeColor = System.Drawing.SystemColors.HighlightText;
this.RowHeadersDefaultCellStyle.Alignment = System.Windows.Forms.DataGridViewContentAlignment.MiddleLeft;
this.RowHeadersDefaultCellStyle.BackColor = System.Drawing.SystemColors.Window;
this.RowHeadersDefaultCellStyle.ForeColor = System.Drawing.SystemColors.WindowText;
this.RowHeadersBorderStyle = System.Windows.Forms.DataGridViewHeaderBorderStyle.Single;
this.DefaultCellStyle.SelectionBackColor = Color.Wheat;
this.DefaultCellStyle.SelectionForeColor = Color.DarkSlateBlue;
this.RowHeadersWidthSizeMode = DataGridViewRowHeadersWidthSizeMode.DisableResizing;
this.GridColor = System.Drawing.SystemColors.GradientActiveCaption;
this.BackgroundColor = System.Drawing.SystemColors.Window;
this.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
this.AllowUserToOrderColumns = true;
this.AutoGenerateColumns = true;
base.OnCreateControl();
}
Color defaultcolor;
//移到单元格时的颜色
protected override void OnCellMouseMove(DataGridViewCellMouseEventArgs e)
{
base.OnCellMouseMove(e);
try
{
Rows[e.RowIndex].DefaultCellStyle.BackColor = Color.YellowGreen;
}
catch (Exception)
{
}
}
//进入单元格时保存当前的颜色
protected override void OnCellMouseEnter(DataGridViewCellEventArgs e)
{
base.OnCellMouseEnter(e);
try
{
defaultcolor = Rows[e.RowIndex].DefaultCellStyle.BackColor;
}
catch (Exception)
{
}
}
//离开时还原颜色
protected override void OnCellMouseLeave(DataGridViewCellEventArgs e)
{
base.OnCellMouseLeave(e);
try
{
Rows[e.RowIndex].DefaultCellStyle.BackColor = defaultcolor;
}
catch (Exception)
{
}
}
}
}
只要我们生成一下就行了,然后项目的各个地方 就会要着变了,不需要动任何代码就OK,其实这也是自定义控件的好处,只要我们重写一下控件 ,就要吧让系统涣然一新了,最新版的源代码已经上传了,请大家到导航页面去下载最新版本 因为有点烂没有写成属性的方式,大家如果感觉颜色不好看可以自己改改,我会在下次更新时改成属性的方式 ,让大家在直接选择颜色,,,,,,,,,,,,,,