ComboBox.PreventDropDown - Control items are free with the TAB key.


ComboBox.PreventDropDown - Control items are free with the TAB key.
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Rogerio Mauri
Rogerio Mauri
Rogerio Mauri
posted 11 Years Ago
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Group: StrataFrame Users
Posts: 205, Visits: 629
cbIdUnidade.PreventDropDown = true;

However, when the user navigates through the fields with the TAB key, the control items are free to choose with arrows up and down.

Rogério Mauri Smile

Reply Like 3
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Rogerio Mauri
Rogerio Mauri
Rogerio Mauri
posted 11 Years Ago
StrataFrame User (439 reputation)StrataFrame User (439 reputation)StrataFrame User (439 reputation)StrataFrame User (439 reputation)StrataFrame User (439 reputation)StrataFrame User (439 reputation)StrataFrame User (439 reputation)StrataFrame User (439 reputation)StrataFrame User (439 reputation)
Group: StrataFrame Users
Posts: 205, Visits: 629
This is the componente code:

       ''' <summary>
        ''' Override to prevent logic from executing under certain circumstnaces
        ''' </summary>
        ''' <param name="m"></param>
        ''' <remarks></remarks>
        Protected Overrides Sub WndProc(ByRef m As System.Windows.Forms.Message)
            '-- Determine if the drop down should be prevented
            If _PreventDropDown Then
                '-- WM_LBUTTONDOWN or WM_LBUTTONDBLCLK 
                If m.Msg = &H201 OrElse m.Msg = &H203 Then Return
            End If

            MyBase.WndProc(m)
        End Sub

My suggestion:

       ''' <summary>
        ''' Override to prevent logic from executing under certain circumstnaces
        ''' </summary>
        ''' <param name="m"></param>
        ''' <remarks></remarks>
        Protected Overrides Sub WndProc(ByRef m As System.Windows.Forms.Message)
            '-- Determine if the drop down should be prevented
            If _PreventDropDown Then
                '-- WM_LBUTTONDOWN or WM_LBUTTONDBLCLK or WM_KEYDOWN
                If m.Msg = &H201 OrElse m.Msg = &H203 OrElse m.Msg = &H100 Then Return
            End If

            MyBase.WndProc(m)
        End Sub 

Rogério Mauri Smile

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ComboBox.PreventDropDown - Control items are free with the TAB key.
Rogerio Mauri - 11 Years Ago
     Hi Rogerio. That seems to make sense to me, since the property is...
Ivan George Borges - 11 Years Ago
             Hi Ivan... But in help documentation StrataFrame: --------------...
Rogerio Mauri - 11 Years Ago
                 Would it work if you set its Enable property to False?
Ivan George Borges - 11 Years Ago
                     When we use this property there are other problems....
Rogerio Mauri - 11 Years Ago
                         Not sure what might be going on there. Maybe I could try and reproduce...
Ivan George Borges - 11 Years Ago
                             This is the componente code : ''' <summary> '''...
Rogerio Mauri - 11 Years Ago

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