/// <summary>
/// Handle the KeyDown of tbHotKey. In this event handler, check the pressed keys.
/// The keys that must be pressed in combination with the key Ctrl, Shift or Alt,
/// like Ctrl+Alt+T. The method HotKeyRegister.GetModifiers could check whether
/// "T" is pressed.
/// </summary>
private void tbHotKey_KeyDown(object sender, KeyEventArgs e)
{
// The key event should not be sent to the underlying control.
e.SuppressKeyPress = true;
// Check whether the modifier keys are pressed.
if (e.Modifiers != Keys.None)
{
Keys key = Keys.None;
KeyModifiers modifiers = HotKeyRegister.GetModifiers(e.KeyData, out key);
// If the pressed key is valid...
if (key != Keys.None)
{
this.registerKey = key;
this.registerModifiers = modifiers;
// Display the pressed key in the textbox.
tbHotKey.Text = string.Format("{0}+{1}",
this.registerModifiers, this.registerKey);
// Enable the button.
btnRegister.Enabled = true;
}
}
}
/// <summary>
/// 处理tbHotKey的KeyDown，事件处理中要检查按键。
/// 按键必须是包含Ctrl，Shift或者Alt键的，比如Ctrl+Alt+T，HotKeyRegister.GetMo-
///difiers方法能够检查是否“T”按键被按了。
/// </summary>
private void tbHotKey_KeyDown(object sender, KeyEventArgs e)
{
// 按键事件不应该被发送到底层控制。
e.SuppressKeyPress = true;
// 检查修饰键是否被按下。
if (e.Modifiers != Keys.None)
{
Keys key = Keys.None;
KeyModifiers modifiers = HotKeyRegister.GetModifiers(e.KeyData, out key);
// 如果按下的按键是有效的。
if (key != Keys.None)
{
this.registerKey = key;
this.registerModifiers = modifiers;
// 在文本框中显示按下的按键。
tbHotKey.Text = string.Format("{0}+{1}",
this.registerModifiers, this.registerKey);
// 启动按钮。
btnRegister.Enabled = true;
}
}
}