Question

抱歉我的英文写作我是VB.Net的新手。我有一个按钮，使用鼠标悬停和鼠标离开将图像背景设置为图片来更改图像。问题是在事件发生后加载图像时看起来很慢。有没有办法改善性能？

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

Answer 1

这不是图像加载缓慢，而是在这里触发MouseHover事件所需的默认时间是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

从事件按钮工具缓慢加载图像鼠标悬停并在VB.net中离开

1 个答案: