我有一个旧的,遗留的VB6应用程序,它使用D
HTML编辑控件作为
HTML编辑器. Microsoft DHTML编辑控件,一个DHTMLEd,可能只不过是一个使用IE自己的内部编辑功能的IE控件.
我想修改应用程序来实现Word的智能引号.具体来说,“被替换为”或“,”被替换为“或”,因为它被输入;如果用户在更换后立即按Ctrl Z,则可以回到直接引用.
有人有代码吗？
如果您没有DHTML / VB6的代码,但确实有JavaScript代码可以在具有contentEditable区域的浏览器中使用,我也可以使用它
解决方法
这是VB6版本：
Private Sub DHTMLEdit1_onkeypress()
Dim e As Object
Set e = DHTMLEdit1.DOM.parentWindow.event
'Perform smart-quote replacement'
Select Case e.keyCode
Case 34: 'Double-Quote'
e.keyCode = 0
If IsAtWordEnd Then
InsertDoubleUndo ChrW$(8221),ChrW$(34)
Else
InsertDoubleUndo ChrW$(8220),ChrW$(34)
End If
Case 39: 'Single-Quote'
e.keyCode = 0
If IsAtWordEnd Then
InsertDoubleUndo ChrW$(8217),ChrW$(39)
Else
InsertDoubleUndo ChrW$(8216),ChrW$(39)
End If
End Select
End Sub
Private Function IsLetter(ByVal character As String) As Boolean
IsLetter = UCase$(character) <> LCase$(character)
End Function
Private Sub InsertDoubleUndo(VisibleText As String,HiddenText As String)
Dim selection As Object
Set selection = DHTMLEdit1.DOM.selection.createRange()
selection.Text = HiddenText
selection.moveStart "character",-Len(HiddenText)
selection.Text = VisibleText
End Sub
Private Function IsAtWordEnd() As Boolean
Dim ch As String
ch = PrevIoUsChar
IsAtWordEnd = (ch <> " ") And (ch <> "")
End Function
Private Function PrevIoUsChar() As String
Dim selection As Object
Set selection = m_dom.selection.createRange()
selection.moveStart "character",-1
PrevIoUsChar = selection.Text
End Function
注意：此解决方案在撤销链中插入一个附加级别.例如,键入“这是一个测试”给出了一个“这是一个测试” – > “这是一个测试” – >“这是一个测试 – >” – >“(额外的粗体).要删除这个额外的级别,你必须实现某种PostMessage子类化解决方案,它不涉及取消本机按键
编辑：如果您定位到Windows Vista,请不要忘记包含DHTML Editing Control redistributable.
