Question

I am trying to simulate keyboard shortcuts such as (Ctrl + A, Ctrl + Shift + X) into a textbox using the keydown event in a textbox but I have a bit of a dilemma. I am using a listbox to log the events that are thrown when it simulates a keyboard shortcut but it runs the event twice. I ask how would I make it so that it only logs into the listbox the shortcut if it only has a modifier key (ctrl, alt, shift, winkey) + an alphanumeric key (a-z 0-9)?

    private void txtShortcut_KeyDown(object sender, KeyEventArgs e)     {         // Example key press: Ctrl + A         if (e.Shift || e.Control || e.Alt)         {             string s = (e.Shift ? Keys.ShiftKey.ToString() + ' + ' : '') + // Shift                 (e.Control ? Keys.ControlKey.ToString() + ' + ' : '') +  // Control                     (e.Alt ? Keys.Menu.ToString() + ' + ' : '') +  // Alt (menu)                         e.KeyCode; // Key.              lbLogger.Items.Add(s);             // Logger Results:             // 1) ControlKey + ControlKey             // 2) ControlKey + A             // * I'm trying to get it to only post the second line and only log the line             // when a modifier key + a-z 0-9 key is pressed with it.         }     } 

What would be the most efficient way to go upon this process of only logging if a modifier key + an a-z or 0-9 key are pressed?

Answer 1

private void txtShortcut_KeyDown(object sender, KeyEventArgs e)     {                 // Example key press: Ctrl + A         if ((e.Shift || e.Control || e.Alt) &&              (((e.KeyCode >= Keys.a) && (e.KeyCode <= Keys.z)) ||             ((e.KeyCode >= Keys.A) && (e.KeyCode <= Keys.Z)) ||             ((e.KeyCode >= Keys.NumPad0) && (e.KeyCode <= Keys.NumPad9)) ||             ((e.KeyCode >= Keys.D0) && (e.KeyCode <= Keys.D9))))         {             string s = (e.Shift ? Keys.ShiftKey.ToString() + ' + ' : '') + // Shift                                 (e.Control ? Keys.ControlKey.ToString() + ' + ' : '') +  // Control                                         (e.Alt ? Keys.Menu.ToString() + ' + ' : '') +  // Alt (menu)                                                 e.KeyCode; // Key.              lbLogger.Items.Add(s);                         // Logger Results:                         // 1) ControlKey + ControlKey                         // 2) ControlKey + A             // * I'm trying to get it to only post the second line and only log the line             // when a modifier key + a-z 0-9 key is pressed with it.         }     }