有没有人知道如何在VB.NET中处理鼠标点击并保持事件?
假设我想单击并按住按钮并在代码后面执行一些操作,例如更改按钮BackColor或更快地关闭窗口(就像在ms office 2013文件菜单中单击时那样使用左箭头关闭那个菜单。)
希望你知道我的意思
谢谢
答案 0 :(得分:2)
您可以创建一个全局定义的计时器,该计时器在调用MouseDown时开始,然后在Mouse Up上结束。然后,您可以设置一个条件,在您认为长按一次之前需要经过多少毫秒。请参阅下面的示例代码:
Public Class Form1
Dim WithEvents timer As New Timer
Dim milliseconds As Integer
Private Sub Form1_MouseDown(sender As Object, e As MouseEventArgs) Handles MyBase.MouseDown
timer.Start()
End Sub
Private Sub Form1_MouseUp(sender As Object, e As MouseEventArgs) Handles MyBase.MouseUp
timer.Stop()
Label1.Text = "Button held down for: " & milliseconds & " milliseconds"
If milliseconds >= 10 then 'Mouse has been down for one second
DoSomething()
End If
End Sub
Private Sub EggTimer_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles timer.Tick
milliseconds += 1
End Sub
End Class
答案 1 :(得分:1)
您正在寻找MouseDown