事件鼠标悬停并离开 VB.net 后从按钮工具缓慢加载图像答案

【问题标题】：Slow load image from button Tool after event Mouse hover and leave in VB.net事件鼠标悬停并离开 VB.net 后从按钮工具缓慢加载图像
【发布时间】：2013-08-12 21:12:49
【问题描述】：

对不起我的英文写作我是 VB.Net 的新手。我有一个按钮，它使用鼠标悬停和鼠标离开来更改图像，将图像背景设置为图片。问题是在事件之后加载图像时看起来很慢。有什么方法可以提高性能吗？

Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
    Button1.BackgroundImage = My.Resources._1 
End Sub

Private Sub Button1_MouseHover(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.MouseHover
    Button1.BackgroundImage = My.Resources._2
End Sub

Private Sub Button1_MouseLeave(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.MouseLeave
    Button1.BackgroundImage = My.Resources._1
End Sub

【问题讨论】：

标签： vb.net performance button mousehover

【解决方案1】：

并不是图像加载速度慢，而是它需要触发 MouseHover 事件的默认时间在这里是关于 mousehovertime 的更多信息，它似乎只能通过 API 在系统范围内设置。

另一种方法是使用 MouseEnter 而不是 MouseHover

Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
    Button1.BackgroundImage = My.Resources._1
End Sub
'use a MouseEnter event instead
Private Sub Button1_MouseEnter(sender As Object, e As EventArgs) Handles Button1.MouseEnter
    Button1.BackgroundImage = My.Resources._2
End Sub

Private Sub Button1_MouseLeave(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.MouseLeave
    Button1.BackgroundImage = My.Resources._1
End Sub

【讨论】：

你太棒了！感谢您的帮助:)