如何使用密钥作为公共密钥 [英] How to use the Key as public key
本文介绍了如何使用密钥作为公共密钥的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我想使用Altr + A作为保存键.就像用户按Altr + A键一样，条目将保存.
我想编写为公共函数，以便用户在输入模式下随时按此Altr + A键将保存输入.我想获取此密钥.
最好的问候，
Jatinder Gupta.
I want to use the i.e Altr+A as a save key. Like if the user press the Key Altr+A the entries become save.
I want to write as public function so that user will press this Altr+A key at any time in a Entry mode will save the entry. I want to capture this key.
Best regards,
Jatinder Gupta.
推荐答案
对不起...您只是在说要在WinForms项目中使用快捷方式吗?
您没有说，但是如果这是Windows Forms应用程序，则可以轻松设置快捷键.
如果已经设置菜单，请转到保存菜单"项并设置其ShortcutKeys属性.
或者，您可以挂钩表单的KeyDown并检查Alt + A，然后运行保存例程. (KeyDown使用KeyEventArgs，它具有Control和Alt属性，您可以检查它们是否被按下).
Sorry...are you simply saying that you want to have a shortcut in your WinForms project?
You didn''t say, but if this is a Windows Forms application, then you can easily set up a shortcut key.
If you already have menus set up, then go to your Save Menu item and set it''s ShortcutKeys property.
Alternatively, you could hook the form''s KeyDown and check for Alt+A and then run your save routine. (KeyDown uses KeyEventArgs which has a Control and Alt property that you can check to see if they''re pressed).
您可以从以下链接获得帮助:
Hi,
You can get the help from following link:
//Key: http://msdn.microsoft.com/en-us/library/ms927178.aspx<br />
//Code: http://social.msdn.microsoft.com/forums/en-US/vbgeneral<br />
常规GlobalHotkey类
General GlobalHotkey class
public class GlobalHotkeys
{
//Virtual-Key Codes
//Key: http://msdn.microsoft.com/en-us/library/ms927178.aspx
//Code: http://social.msdn.microsoft.com/forums/en-US/vbgeneral/thread/5197e0ee-ef85-4f9e-8652-631b8a80e330/
//The following table shows the symbolic constant names, hexadecimal values,
//and keyboard equivalents for the virtual-key codes used by the Microsoft Windows CE operating system.
//The codes are listed in numeric order.
//You can combine any of the codes with a modifier key to create a hot key.
//----------------------------------------------------------------------------------------
//Symbolic constant Hexadecimal Mouse or keyboard equivalent
//----------------------------------------------------------------------------------------
//VK_LBUTTON 01 Left mouse button
//VK_RBUTTON 02 Right mouse button
//VK_CANCEL 03 Control-break processing
//VK_MBUTTON 04 Middle mouse button on a three-button mouse
//VK_BACK 08 BACKSPACE key
//VK_TAB 09 TAB key
//VK_CLEAR 0C CLEAR key
//VK_RETURN 0D ENTER key
//VK_SHIFT 10 SHIFT key
//VK_CONTROL 11 CTRL key
//VK_MENU 12 ALT key
//VK_PAUSE 13 PAUSE key
//VK_CAPITAL 14 CAPS LOCK key
//VK_ESCAPE 1B ESC key
//VK_SPACE 20 SPACEBAR
//VK_PRIOR 21 PAGE UP key
//VK_NEXT 22 PAGE DOWN key
//VK_END 23 END key
//VK_HOME 24 HOME key
//VK_LEFT 25 LEFT ARROW key
//VK_UP 26 UP ARROW key
//VK_RIGHT 27 RIGHT ARROW key
//VK_DOWN 28 DOWN ARROW key
//VK_SNAPSHOT 2C PRINT SCREEN key
//VK_INSERT 2D INS key
//VK_DELETE 2E DEL key
//VK_HELP 2F HELP key
//VK_NUMPAD0 60 Numeric keypad 0 key
//VK_NUMPAD1 61 Numeric keypad 1 key
//VK_NUMPAD2 62 Numeric keypad 2 key
//VK_NUMPAD3 63 Numeric keypad 3 key
//VK_NUMPAD4 64 Numeric keypad 4 key
//VK_NUMPAD5 65 Numeric keypad 5 key
//VK_NUMPAD6 66 Numeric keypad 6 key
//VK_NUMPAD7 67 Numeric keypad 7 key
//VK_NUMPAD8 68 Numeric keypad 8 key
//VK_NUMPAD9 69 Numeric keypad 9 key
//VK_MULTIPLY 6A Multiply key
//VK_ADD 6B Add key
//VK_SEPARATOR 6C Separator key
//VK_SUBTRACT 6D Subtract key
//VK_DECIMAL 6E Decimal key
//VK_DIVIDE 6F Divide key
//VK_F1 70 F1 key
//VK_F2 71 F2 key
//VK_F3 72 F3 key
//VK_F4 73 F4 key
//VK_F5 74 F5 key
//VK_F6 75 F6 key
//VK_F7 76 F7 key
//VK_F8 77 F8 key
//VK_F9 78 F9 key
//VK_F10 79 F10 key
//VK_F11 7A F11 key
//VK_F12 7B F12 key
//VK_F13 7C F13 key
//VK_F14 7D F14 key
//VK_F15 7E F15 key
//VK_F16 7F F16 key
//VK_F17 80H F17 key
//VK_F18 81H F18 key
//VK_F19 82H F19 key
//VK_F20 83H F20 key
//VK_F21 84H F21 key
//VK_F22 85H F22 key(PPC only) Key used to lock device.
//VK_F23 86H F23 key
//VK_F24 87H F24 key
//VK_NUMLOCK 90 NUM LOCK key
//VK_SCROLL 91 SCROLL LOCK key
//VK_LSHIFT 0xA0 Left SHIFT
//VK_RSHIFT 0xA1 Right SHIFT
//VK_LCONTROL 0xA2 Left CTRL
//VK_RCONTROL 0xA3 Right CTRL
//VK_LMENU 0xA4 Left ALT
//VK_RMENU 0xA5 Right ALT
#region Enum
public enum Key
{
NumpadDecimal = 1,
NumpadMultiply,
Escape,
End,
CtrlR,
CtrlF,
CtrlC,
CtrlI
/*NumpadEnter,
NumpadDelete,
NumpadSubtract,
NumpadAdd,
NumpadD1,
NumpadD2,
NumpadD3,
NumpadD4,
NumpadD5,
NumpadD6,
NumpadD7,
NumpadD8,
NumpadD9*/
}
public enum SymbolicKey
{
None = 0,
Alt = 1,
Ctrl = 2,
Shift = 4
}
#endregion
#region fields
//DEL key
public const int VK_DECIMAL = 0x6e;
//Multiply key
public const int VK_MULTIPLY = 0x6a;
//Alt key
//public static int MOD_ALT = 0x1;
//public static int MOD_CONTROL = 0x2;
//public static int MOD_SHIFT = 0x4;
public static int MOD_WIN = 0x8;
public static int WM_HOTKEY = 0x312;
//public static int MOD_NONE = 0x0;
//private static int keyId;
#endregion
[DllImport("user32.dll")]
public static extern bool RegisterHotKey(IntPtr hWnd, int id, int fsModifiers, int vlc);
[DllImport("user32.dll")]
public static extern bool UnregisterHotKey(IntPtr hWnd, int id);
}
在表单加载时注册热键
Register HotKey on form load
private void frmMain_Load(object sender, EventArgs e)
{
GlobalHotkeys.RegisterHotKey(this.Handle, Convert.ToInt32(GlobalHotkeys.Key.NumpadDecimal), Convert.ToInt32(GlobalHotkeys.SymbolicKey.None), Convert.ToInt32(Keys.Decimal));
}
在表单关闭时取消注册热键
UnRegister HotKey on form closing
private void frmMain_FormClosing(object sender, FormClosingEventArgs e)
{
GlobalHotkeys.UnregisterHotKey(this.Handle, Convert.ToInt32(GlobalHotkeys.Key.NumpadDecimal));
}
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