从弹出窗口更新主表单时发生写冲突

Question

我在Access中创建了一个“键盘”，用于通过Android手机使用Google远程桌面以主要形式输入数据（大多数输入将使用计算机和普通键盘在本地完成）。

基于多表查询的主窗体包含数据。远程（Android）用户单击一个表单字段，然后弹出键盘，用户可以使用鼠标指针选择字母，最后单击一个OK按钮，该按钮将使用所选字母覆盖主表单的原始字段数据。

到目前为止，一切都很好，但是在离开主窗体后，出现了Write Conflict MessageBox，并且所有来自“键盘”的新编辑数据都消失了-原始数据重新出现，换句话说，什么都没有改变。

弹出键盘上的“确定”按钮的代码为：

Private Sub tOK_Click()

    Dim p As String
    Dim f As String
    Dim c As String
    Dim txtResult As String
    Dim pFrmName As String
    Dim frmName As String
    Dim ctrl As String

    'On Error GoTo errHandler
    pFrmName = Me.pFrmName  ' the first three or the lasr three strings can be dropped as they contain the same data
    frmName = Me.frmName
    ctrl = Me.ctrlName
    p = pFrmName
    f = frmName
    c = ctrl

    If p = c Then
        Forms(f).SetFocus
        Forms(f)(c).Value = Me.txtResult
    Else
        Forms(f)(p)(c).SetFocus
        Forms(f)(p)(c).Value = Me.txtResult
    End If

我有一个名为vkbddata的函数，该函数已放入主窗体的textBox的OnClick事件中。

如何避免输入冲突而远程输入数据？

*************************************************** ********** 2018年9月8日 功能：

Option Compare Database
Option Explicit

Function vkbdData()
'used to provide data to virtual keyboard so it can assign new data to underlying form
On Error GoTo err_handler

If Forms!f00_logon!vkbd = True Then 'if user checks virtual keyboard

Dim ctrl As Control
Dim ctrlName As String
Dim pFrmName As String ' parent form if one exists
Dim frmName As String
Dim ctrlcaption As String
Dim sValue As String

If IsNull(Screen.ActiveForm.Controls.Parent) Then
frmName = Screen.ActiveForm.ActiveControl.Name
Else
frmName = Screen.ActiveForm.Name
End If
pFrmName = Screen.ActiveForm.ActiveControl.Name

ctrlcaption = ""

ctrlName = Screen.ActiveControl.Name
    If IsNull(Screen.ActiveControl.Value) Then
    sValue = ""
    Else
    sValue = Screen.ActiveControl.Value
    End If
'Debug.Print ctrlName

vkbdData = keyBoardPopUp(frmName, pFrmName, ctrlName, ctrlcaption, sValue)

End If

Exit_Form:
 Exit Function

err_handler:
 MsgBox Err.Description
 Resume Exit_Form


End Function

Public Function keyBoardPopUp(pFrmName, frmName, ctrlName, ctrlcaption, sValue) As String
Dim frm As Object
Dim ctrl As Control
Dim sParameters As String

'strange deliminators (>,|, ...) to make it easy to tell what each parameter value is
sParameters = pFrmName & ">" & frmName & "|" & ctrlName & "^" & ctrlcaption & "~" & sValue
'Debug.Print "SParameters  " & sParameters
DoCmd.OpenForm "frm_keyboard", , , , , , sParameters


End Function

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