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Thread: Get window text

  1. #1
    intelcorei9
    intelcorei9 is offline
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    Get window text

    Use : 1 Label, 2 Textbox, 1 Timer

    Code:
    Public Class Main
        Private Declare Function GetWindowTextLengthA Lib "user32" ( _
        ByVal hwnd As IntPtr) As Integer
    
        Private Declare Function GetWindowTextA Lib "user32" ( _
        ByVal hwnd As IntPtr, _
        ByVal lpString As System.Text.StringBuilder, _
        ByVal nMaxCount As Integer) As Integer
    
        Private Function GetText()
            Dim processName As Process() = Process.GetProcessesByName(txtProcess.Text)
            Dim length As Integer = GetWindowTextLengthA(processName(0).MainWindowHandle)
            Dim sb As New System.Text.StringBuilder("", length)
            GetWindowTextA(processName(0).MainWindowHandle, sb, sb.Capacity + 1)
            Return sb.ToString()
        End Function
    
        Private Sub tmrChk_Tick(sender As Object, e As EventArgs) Handles tmrChk.Tick
            Dim processName As Process() = Process.GetProcessesByName(txtProcess.Text)
            If Not processName.Length = 0 Then
                Label1.Text = "Detected: " + txtProcess.Text
                Label1.ForeColor = Color.Green
                txtGet.Text = GetText()
            Else
                Label1.Text = "Can not find: " + txtProcess.Text
                Label1.ForeColor = Color.Red
                txtGet.Text = String.Empty
            End If
        End Sub
    End Class

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