[英]Keys.Numpad0 comes in as Keys.System when ALT is pressed
我正在嘗試檢測ALT + 1到ALT + 9的熱鍵,但是當按ALT時,該鍵作為Key.System出現。 按下CTRL + NumPad0時,其鍵為Key.NumPad0,這是正確的。
private void MainWindow_PreviewKeyDown(object sender, KeyEventArgs e)
{
bool isAlt = Keyboard.IsKeyDown(Key.LeftAlt) || Keyboard.IsKeyDown(Key.RightAlt);
bool isCtrl = Keyboard.IsKeyDown(Key.LeftCtrl) || Keyboard.IsKeyDown(Key.RightCtrl);
string ctrlMod = string.Empty;
if (isAlt)
{
ctrlMod = "alt + " + e.Key.ToString();
}
if (isCtrl)
{
ctrlMod = "ctrl + " + e.Key.ToString();
}
Debug.WriteLine("Key is " + ctrlMod);
}
ALT + NumPad0到ALT + NumPad9產生:
關鍵是alt +系統
Ctrl正常工作
鍵是ctrl + NumPad1
鍵是ctrl + NumPad2
按鍵是Ctrl + NumPad3
您可以使用Keyboard.Modifiers
和KeyEventArgs.SystemKey
屬性來檢測ALT+1
到ALT+9
:
private void MainWindow_PreviewKeyDown(object sender, KeyEventArgs e)
{
if (Keyboard.Modifiers == ModifierKeys.Alt)
{
string ctrlMod = "alt + " + e.SystemKey.ToString();
Debug.WriteLine("Key is " + ctrlMod);
}
}
private void MainWindow_PreviewKeyDown(object sender, KeyEventArgs e)
{
bool isAlt = Keyboard.Modifiers == ModifierKeys.Alt;
bool isCtrl = Keyboard.Modifiers == ModifierKeys.Control;
string ctrlMod = string.Empty;
if (isAlt)
{
ctrlMod = "alt + " + e.SystemKey.ToString();
}
if (isCtrl)
{
ctrlMod = "ctrl + " + e.Key.ToString();
}
Debug.WriteLine("Key is " + ctrlMod);
}
我認為maccettura是正確的,並且與“ Windows Alt Codes”有關。 我可以使用解決它
if (Keyboard.IsKeyDown(Key.NumPad0)) { }
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.