Option Strict - Issues

I turned on Option Strict, but I have a few issues that I am not sure the best way to handle.

We leave the speech object as an object because some systems do not support speech and this is the only way we knew how to detect the issue. Any better ideas?

vb Code:

Public speech As Object = Nothing 'SpeechLib.SpVoice

leave options strict on as the default setting, then in the class/module/what ever where you're using the speech object, turn it off.

-tg

What do you recommend for this? I tried to change Object to Radio Button on the function header but it did not help.

error Code:

Error   9   Option Strict On disallows late binding.    C:\Users\Jeff\Documents\JeffWorkSpace2\StudyX.NET\frmStudy.vb   1020    16  study

vb Code:

Private Sub _uotAnswer_0_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles rbOption1.KeyPress, rbOption2.KeyPress, rbOption3.KeyPress, rbOption4.KeyPress
 
        If e.KeyChar = Chr(Keys.Return) Then 'Microsoft.VisualBasic.ChrW(Keys.Return) 
            If sender.Checked = True Then
                btnNext_Click(sender, e)
            End If
        End If
 
 
    End Sub

Quote:

---

Originally Posted by rex64

What do you recommend for this? I tried to change Object to Radio Button on the function header but it did not help.

error Code:

Error   9   Option Strict On disallows late binding.    C:\Users\Jeff\Documents\JeffWorkSpace2\StudyX.NET\frmStudy.vb   1020    16  study

vb Code:

Private Sub _uotAnswer_0_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles rbOption1.KeyPress, rbOption2.KeyPress, rbOption3.KeyPress, rbOption4.KeyPress
 
        If e.KeyChar = Chr(Keys.Return) Then 'Microsoft.VisualBasic.ChrW(Keys.Return) 
            If sender.Checked = True Then
                btnNext_Click(sender, e)
            End If
        End If
 
 
    End Sub

---

Here is how you should do this, knowing the event only handles RadioButton controls cast sender as a RadioButton, test for enter pressed and if so invoke PerformClick method for the Button.

Code:

---

Private Sub RadioButton1_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) _
    Handles RadioButton1.KeyPress, RadioButton2.KeyPress

    If e.KeyChar = Microsoft.VisualBasic.ChrW(Keys.Return) Then
        If CType(sender, RadioButton).Checked Then
            Button1.PerformClick()
        End If
    End If

End Sub

---

The obvious solution is to use the Speech API built into the .NET Framework instead of the old Windows SAPI. .NET has provided its own Speech API since version 3.0. If you use that you know that every application that runs your app will support it because it must have the correct Framework installed.

I am using .NET 2.0 because I want to maximize compatibility.

Isn't that a little ironic given that you started this thread in the first place due to a compatibility issue? .NET 3.0 is supported on XP SP2 and Windows Server 2003 SP1. How much more compatibility do you want?

Good point, I think it is almost time to phase out 98 and SP1 :). Our software is used in countries where people can not afford new computers, and we don't want to exclude them, but I think most people can do XP SP2 at least.