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vb.net焦點切換 vb設(shè)置焦點

vb.net設(shè)置windows焦點程序

給你個參考的例子,窗體打開時可能大小有變化,軟件名可能有變化

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先加個控件ListBox1,運行后雙擊ListBox1上程序名

Public Class Form1

Public myProcess() As Process

Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

Dim myProcesses() As Process = Process.GetProcesses()

Dim jh As New ArrayList

For Each bs As Process In myProcesses

If CInt(bs.MainWindowHandle) 0 Then

ListBox1.Items.Add(bs.ProcessName)

jh.Add(bs)

End If

Next

ReDim myProcess(jh.Count - 1)

jh.CopyTo(myProcess)

End Sub

Declare Function ShowWindow Lib "user32" Alias "ShowWindow" (ByVal hwnd As Integer, ByVal nCmdShow As Long) As Integer

Private Sub ListBox1_MouseDoubleClick(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles ListBox1.MouseDoubleClick

Dim a As Process = myProcess(ListBox1.SelectedIndex)

Try

Dim dd = ShowWindow(a.MainWindowHandle, H1)

AppActivate(a.Id)

Catch ex As Exception

End Try

End Sub

End Class

VB.NET中頁面初期顯示時按下enter鍵讓焦點在五個textbox控件上順序移動該怎么辦?求大神指點,謝謝!

這樣不好,應(yīng)該使用 Table 鍵,按照 Table 鍵順序來切換。因為回車往往用來確定你要按下頁面的確定按鈕。如果非要使用回車:

Private Sub 文本框按下回車鍵(sender As Object, e As KeyEventArgs) Handles TextBox3.KeyDown, TextBox2.KeyDown, TextBox1.KeyDown

If e.KeyCode = Keys.Enter Then

Select Case sender.name

Case "TextBox1"

TextBox2.Focus()

Case "TextBox2"

TextBox3.Focus()

Case "TextBox3"

TextBox1.Focus()

End Select

End If

End Sub

VB.Net 給其他程序焦點

Public RunProcess As Process

RunProcess.start("djiwqjidjwqi")

AppActivate(RunProcess.Id())

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