keyboard events

[User (Old forums)]

#16062 |

Hi,

First, i want to say Thanks for this  great usefull xceed grid control.

when i used to create cell_MouseEnter event as below it is working fine 

Dim cell As DataCell

For Each cell In GridControl1.DataRowTemplate.Cells

AddHandler cell.MouseEnter, AddressOf Me.ShowTip

Next

But when i used to create keyboard event as below it is not working fine 

Dim cell As DataCell

For Each cell In GridControl1.DataRowTemplate.Cells

AddHandler cell.KeyPress, AddressOf Me.cell_keypress

Next

On keypress in the xceed grid datarow cell, this cell_keypress event is not even executing. 

Please advise me on this. 

Imported from legacy forums. Posted by pravi (had 901 views)

[Xceed Support]

#16063

These events will only be triggered as long as the DataCell is not in Edit mode. So, your KeyPress event should have been executed once. However, after the DataCell goes into Edit mode, so you need to monitor the KeyPress of the CellEditorManager.

To do so, you subscribe to the ActivatingControl event on the CellEditorManager of the wanted DataCells. In the ActivatingControl event, you cast the e.Control parameter as the Cell Editor (a WinTextBox for example). And you Manage the KeyPress event on it.

Code sample:

Private Sub Form1_Load(ByVal sender As Object, ByVal e As EventArgs) 
    ‘…
    
    For Each cell As DataCell In gridControl1.DataRowTemplate.Cells
        AddHandler cell.CellEditorManager.ActivatingControl, AddressOf CellEditorManager_ActivatingControl
        AddHandler cell.CellEditorManager.DeactivatingControl, AddressOf CellEditorManager_DeactivatingControl
    Next
End Sub

Private Sub CellEditorManager_ActivatingControl(ByVal sender As Object, ByVal e As CellEditorEventArgs)
    AddHandler DirectCast(e.Control, WinTextBox).TextBoxArea.KeyPress, AddressOf TextBoxArea_KeyPress
End Sub

Private Sub CellEditorManager_DeactivatingControl(ByVal sender As Object, ByVal e As CellEditorEventArgs)
    RemoveHandler DirectCast(e.Control, WinTextBox).TextBoxArea.KeyPress, AddressOf TextBoxArea_KeyPress
End Sub

Private Sub TextBoxArea_KeyPress(ByVal sender As Object, ByVal e As KeyPressEventArgs)
    ‘Handle the KeyPress
End Sub

Imported from legacy forums. Posted by CharlesB (had 598 views)

[User (Old forums)]

#16064

Hi,

Inorder to handle the keyboard events i implemented the following code

Private Sub CreateTextBoxes(ByVal paramName As String, ByVal index As Integer)

Dim dataRow As DataRow

dataRow = GridControl1.DataRows.AddNew()

Dim txtBox As New WinTextBox()

Dim txtEditor As New TextEditor(txtBox)

Dim txtViewer As New TextViewer(txtBox)

AddHandler txtEditor.ActivatingControl, AddressOf txtEditor_ActivatingControl

AddHandler txtEditor.DeactivatingControl, AddressOf txtEditor_DeactivatingControl

dataRow.Cells(“Value”).CellEditorManager = txtEditor

dataRow.Cells(“Value”).CellViewerManager = txtViewer

dataRow.Cells(“Parameter”).Value = paramName

dataRow.EndEdit()

End Sub

 

 Private Sub txtEditor_ActivatingControl(ByVal sender As Object, ByVal e As CellEditorEventArgs)

Dim txtBox As WinTextBox = CType(e.Control, WinTextBox)

AddHandler txtBox.KeyPress, AddressOf txtBox_keypress

End Sub

 

 Private Sub txtEditor_DeactivatingControl(ByVal sender As Object, ByVal e As CellEditorEventArgs)

Dim txtBox As WinTextBox = CType(e.Control, WinTextBox)

RemoveHandler txtBox.KeyPress, AddressOf txtBox_keypress

End Sub

 

Private

Sub txtBox_keypress(ByVal sender As Object, ByVal e As KeyPressEventArgs)

Dim a As Integer = GridControl1.DataRows.Count

End Sub

 On mouse click of the cell the event “txtEditor_ActivatingControl” is executing but on keypress in that cell (textbox), txtBox_keypress event is not executing.

Please advise me on this.

Imported from legacy forums. Posted by pravi (had 491 views)

[Xceed Support]

#16065

You need to subscribe on the TextBoxArea of the WinTextBox. Something like this:

AddHandler txtBox.TextBoxArea.KeyPress, AddressOf txtBox_keypress

Imported from legacy forums. Posted by CharlesB (had 747 views)

[User (Old forums)]

#16066

Thanks for the reply.

Imported from legacy forums. Posted by pravi (had 1014 views)

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