获取关键preSS字符 [英] Get KeyPress character

问题描述

我只是想在WPF RichtTextbox的pressed字符。

I just want to get the pressed char in WPF RichtTextbox.

Private Sub rtb_KeyDown(sender As Object, e As System.Windows.Input.KeyEventArgs) Handles rtb.KeyDown
        Dim KeyConverter As New Forms.KeysConverter
        Dim S As String = KeyConverter.ConvertToString(e.Key)

    End Sub

但我只有keyDown事件。在KEYDOWN就变得很复杂赶上合适的角色。大写/小写和像SHIFT通过的keydown被解雇特殊键，我首先需要计算到pressed关键。那是复杂的。 因为WPF是在大多数情况下那么复杂，我会问，如果你知道什么办法让键盘上的pressed密钥字符串或字符？

But I only have keyDown event. On Keydown it becomes to be very complicated to catch the right character. Uppercase/Lowercase and special keys like "SHIFT" are fired by keydown, I first need to calculate to the pressed key. Thats complicated. Because WPF is less complicated in most cases, I will ask if you know any way to get the pressed key on keyboard as string or char?

问候

推荐答案

尝试使用 previewTextInput 事件：

public Window7() {
  this.InitializeComponent();
  this.richTextBox.PreviewTextInput += new TextCompositionEventHandler(this.rtb_PreviewTextInput);
}

private void rtb_PreviewTextInput(object sender, TextCompositionEventArgs e) {
  var text = e.Text;
  var systemText = e.SystemText;
  var controlText = e.ControlText;
  var kbm = Keyboard.Modifiers;
}

Private Sub richTextBox_PreviewTextInput(sender As System.Object , e As System.Windows.Input.TextCompositionEventArgs)
    Dim text As String = e.Text
    Dim controlText As String = e.ControlText
    Dim systemText As String = e.SystemText
    Dim keybm As ModifierKeys = Keyboard.Modifiers
End Sub

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