WPF TextBox Control gets the hotkey and turns to Win32 keys

The key object used in WPF differs from the keys in WinForm, where the key enumeration object differs from the physical key in that it has a function key and cannot be cast as a type. When using the win API to register a hot key, you need to convert it to a Win32 key value, you can use Keyinterop.virtualkeyfromkey (), and the keys can save the combo keys, key is just a single button. There is a Modifiers in the keys, from which you can see that the 0~15 bit is used to store the function keys. The difference between the two graphs can be visually identified by comparing them.

Example code:

Using System.windows.input;namespace demo.  Controls{class HotKeyTextBox:BeiLiNu.Ui.Controls.WPF.Controls.XTextBox {private System.Windows.Forms.Keys        Pressedkeys = System.Windows.Forms.Keys.None; protected override void Onpreviewkeydown (System.Windows.Input.KeyEventArgs e) {int keyValue = Keyintero            P.virtualkeyfromkey (E.key); if ((Keyboard.modifiers & modifierkeys.control) = = Modifierkeys.control) {keyValue + = (int)            System.Windows.Forms.Keys.Control; } if ((Keyboard.modifiers & modifierkeys.alt) = = Modifierkeys.alt) {KeyValue + = (int)            System.Windows.Forms.Keys.Alt;  } if ((Keyboard.modifiers & modifierkeys.shift) = = Modifierkeys.shift) {KeyValue            + = (int) System.Windows.Forms.Keys.Shift; } this.            Keys = (System.Windows.Forms.Keys) keyValue;      E.handled = true;             Public System.Windows.Forms.Keys Keys {get {return pressedkeys;}                set {Pressedkeys = value;            SetText (value); }} private void SetText (System.Windows.Forms.Keys Keys) {this. Text = keys.        ToString (); }    }}