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18 de ago. de 2023 · The Keys Enumeration - Property Accessibility - Visual Basic Planet. Last Updated on Fri, 18 Aug 2023 | Property Accessibility. Three of the properties of KeyEventArgs are of type Keys. Keys is a large enumeration—the second largest enumeration in the entire .NET Framework.
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Namespace: System.Windows.Forms
Assembly: System.Windows.Forms.dll
Specifies key codes and modifiers.
This enumeration supports a bitwise combination of its member values. [ ] [ ] [ ] type Keys = [ ] [ ] type Keys = Inheritance
Object
ValueType
The following code example uses the KeyDown event to determine the type of character entered into the control. // Boolean flag used to determine when a character other than a number is entered. private bool nonNumberEntered = false; // Handle the KeyDown event to determine the type of character entered into the control. private void textBox1_KeyDow...
The Keys class contains constants for processing keyboard input. The members of the Keys enumeration consist of a key code and a set of modifiers combined into a single integer value. In the Win32 application programming interface (API) a key value has two halves, with the high-order bits containing the key code (which is the same as a Windows virtual key code), and the low-order bits representing key modifiers such as the SHIFT, CONTROL, and ALT keys.
Warning
Do not use the values in this enumeration for combined bitwise operations. The values in the enumeration are not mutually exclusive.
•Call the IsKeyLocked method of the Control class.
•For finer control, use the Windows API functions GetKeyState, GetAsyncKeyState, or GetKeyboardState defined in user32.dll, to do this. For more information about calling native functions, see Consuming Unmanaged DLL Functions.
The following table shows the key code values represented by two enumerated values, representing both the general original equipment manufacturer (OEM) keys and the more specific U.S.-keyboard associations.
Definición. Espacio de nombres: System. Windows. Forms. Ensamblado: System.Windows.Forms.dll. Especifica los modificadores y códigos de tecla. Esta enumeración admite una combinación bit a bit de sus valores de miembro. C# [System.ComponentModel.TypeConverter(typeof(System.Windows.Forms.KeysConverter))] [System.Flags] public enum Keys. Herencia.
Definición. Espacio de nombres: System. Windows. Input. Ensamblado: WindowsBase.dll. Especifica los valores de tecla posibles en un teclado. C# Copiar. [System.ComponentModel.TypeConverter(typeof(System.Windows.Input.KeyConverter))] public enum Key. Herencia. Object. ValueType. Enum. Key. Atributos. Type Converter Attribute. Campos. Expandir tabla
First, these are KEY codes, not character codes: they identify a key on your keyboard, not a character - e.g. the 'A' character is usually generated by pressing the A key while holding down a SHIFT key or having CAPS LOCK active. The OEM keys are the keys that vary with local keyboards.
30 de may. de 2023 · Definitions. Key enumeration algorithms combine the results of different divide-and-conquer attacks to recover the master key. The key enumeration algorithms output the master key candidates that are more likely. Background. The divide-and-conquer strategy aims to recover the master key by chunks (also called subkey).
25 de sept. de 2022 · Keys is an enumeration, and it stores special values for many different keys pressed. KeyCode must be compared to Keys. private void textBox1_KeyDown (object sender, KeyEventArgs e) { if (e.KeyCode == Keys.Enter) { // Enter (return) was pressed. // ... Call a custom method when user presses this key. AcceptMethod (); } } Keys.
