missice's Blog

這是在伊莉討論區一個網友提出來的問題，要解決這個問題的原理是這樣的：
按下視窗右上角的關閉鈕會呼叫OnFormClosing跟OnFormClosed這兩個方法，然後這兩個方法又要去呼叫FormClosing跟FormClosed這兩個事件，所以要達成我們的功能，就得複寫掉OnFomClosing或OnFormClosed這兩個方法。語法如下：

    Friend WithEvents notifyIcon1 As System.Windows.Forms.NotifyIcon
    Protected Overrides Sub OnFormClosing(ByVal e As FormClosingEventArgs)
        e.Cancel = True
        Me.components = New System.ComponentModel.Container
        Me.notifyIcon1 = New System.Windows.Forms.NotifyIcon(Me.components)
        notifyIcon1.Icon = New Icon("C:\Dev-Cpp\Icons\Book.ico")
        notifyIcon1.Visible = True
        Me.Visible = False
    End Sub

按兩下icon把Form叫出來可以這樣寫：

     Private Sub ntfSystemInfo_DoubleClick(ByVal sender As Object, ByVal e As System.EventArgs) Handles notifyIcon1.DoubleClick
        NotifyIcon1.Visible = False
        Me.Show()
    End Sub