Tostrin birleşik yazılır (en altda)
2 tane aynı eventdan yapmıssın (listbox1.selectedindexchanged)
dll import u değişken tanıttıktan sonra yap
benim kod sayfam bu işte uyarla kendine
Imports System.Diagnostics
Imports System.Runtime.InteropServices
Public Class Form1
Const SW_GIZLE As Integer = 0
Const SW_GOSTER As Integer = 9
Dim hWnd As Integer
Dim p As Process()
<DllImport("User32")> Private Shared Function ShowWindow(ByVal hwnd As Integer, ByVal nCmdShow As Integer) As Integer
End Function
Private Sub pencerelerigoster()
Dim islem() As Process = Process.GetProcesses()
ListBox1.Items.Clear()
For Each x As Process In islem
If x.ProcessName <> "" Then
ListBox1.Items.Add(x.ProcessName())
End If
Next
ListBox1.Items.Remove(Me.Text)
End Sub
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
pencerelerigoster()
End Sub
Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
ShowWindow(hWnd, SW_GOSTER)
hWnd = p(0).MainWindowHandle.ToInt32
End Sub
Private Sub Button4_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button4.Click
ShowWindow(hWnd, SW_GIZLE)
hWnd = p(0).MainWindowHandle.ToInt32
End Sub
Private Sub ListBox1_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ListBox1.SelectedIndexChanged
p = Process.GetProcessesByName(ListBox1.SelectedItem.ToString)
End Sub
End Class
İlla üçgen yapıcam diyorsan GDI'ı inceleyebilirsin . Ama başlangıç için gerek yok bence.