C# .right shift和left shift键之间的净差异
我目前正在开发一个应用程序,该应用程序需要根据用户是按右移键还是按左移键(rshift键、lshift键)做出不同的行为,但是当按下其中一个键时,我只能看到ShiftKey | shift 我的键盘有问题吗?(笔记本电脑)我是否需要一个新的键盘驱动程序/键盘来发送不同的按键命令C# .right shift和left shift键之间的净差异,c#,.net,keyboard,C#,.net,Keyboard,我目前正在开发一个应用程序,该应用程序需要根据用户是按右移键还是按左移键(rshift键、lshift键)做出不同的行为,但是当按下其中一个键时,我只能看到ShiftKey | shift 我的键盘有问题吗?(笔记本电脑)我是否需要一个新的键盘驱动程序/键盘来发送不同的按键命令 目前这是一个相当大的问题,因为没有办法测试代码是否工作(除了单元测试)。任何人都有过使用不同shift/alt/ctrl键的经验吗?我不知道这篇文章是否对您有所帮助,但看起来您可能不得不处理互操作服务和诊断: 编辑:正
目前这是一个相当大的问题,因为没有办法测试代码是否工作(除了单元测试)。任何人都有过使用不同shift/alt/ctrl键的经验吗?我不知道这篇文章是否对您有所帮助,但看起来您可能不得不处理互操作服务和诊断: 编辑:正如adrianbanks透露的那样,我终于找到了如何使GetAsyncKeyState()工作的方法
[System.Runtime.InteropServices.DllImport("user32.dll")]
private static extern short GetAsyncKeyState(Keys vKey);
private void theForm_KeyDown(object sender, KeyEventArgs e)
{
if (e.KeyCode == Keys.ShiftKey)
{
if (Convert.ToBoolean(GetAsyncKeyState(Keys.LShiftKey)))
{
Console.WriteLine("Left");
}
if (Convert.ToBoolean(GetAsyncKeyState(Keys.RShiftKey)))
{
Console.WriteLine("Right");
}
}
}
看看Win32方法。您可以使用以下方法向其添加pInvoke调用:
[DllImport("user32.dll")]
private static extern short GetAsyncKeyState(Keys key);
然后处理表单上的KeyDown
事件:
private void MyForm_KeyDown(object sender, KeyEventArgs e)
{
Console.WriteLine("Left Shift : " + (GetAsyncKeyState(Keys.LShiftKey) < 0));
Console.WriteLine("Right Shift: " + (GetAsyncKeyState(Keys.RShiftKey) < 0));
}
private void MyForm_KeyDown(对象发送方,KeyEventArgs e)
{
Console.WriteLine(“左移位:”+(GetAsyncKeyState(Keys.LShiftKey)<0));
Console.WriteLine(“右移:”+(GetAsyncKeyState(Keys.RShiftKey)<0));
}
谢谢各位,这是一个很好的解决方案。同时,以下是我自己通过重写ProcessCmdKey实现此功能的“黑客”方式:
public override bool ProcessCmdKey(ref Message msg, Keys keyData)
{
if (msg.LParam.ToInt32() == 0x2a0001)
LastShiftKey = ShiftKeys.NumericShift;
else if (msg.LParam.ToInt32() == 0x360001)
LastShiftKey = ShiftKeys.AlphaShift;
etc....
}
我同样需要区分左右换档键和控制键。这是我的较长但可能更好的解决方案。如果你想捕捉alt键,你需要覆盖一些其他的东西来阻止它们激活任何菜单
((int)m.LParam&0xFFFF)
应该给出重复计数,但它似乎永远不会超过2
protected override bool ProcessKeyMessage(ref Message m)
{
if ((m.Msg == WM_KEYDOWN || m.Msg == WM_KEYUP) && ((int)m.WParam == VK_CONTROL || (int)m.WParam == VK_SHIFT))
{
KeyEventArgs e = new KeyEventArgs(Keys.None);
switch ((OemScanCode)(((int)m.LParam >> 16) & 0x1FF))
{
case OemScanCode.LControl:
e = new KeyEventArgs(Keys.LControlKey);
break;
case OemScanCode.RControl:
e = new KeyEventArgs(Keys.RControlKey);
break;
case OemScanCode.LShift:
e = new KeyEventArgs(Keys.LShiftKey);
break;
case OemScanCode.RShift:
e = new KeyEventArgs(Keys.RShiftKey);
break;
default:
if ((int)m.WParam == VK_SHIFT)
e = new KeyEventArgs(Keys.ShiftKey);
else if ((int)m.WParam == VK_CONTROL)
e = new KeyEventArgs(Keys.ControlKey);
break;
}
if (e.KeyData != Keys.None)
{
if (m.Msg == WM_KEYDOWN)
OnKeyDown(e);
else
OnKeyUp(e);
return true;
}
}
return base.ProcessKeyMessage(ref m);
}
#region Scan code & window message stuff
const int WM_KEYDOWN = 0x100;
const int WM_KEYUP = 0x101;
const int VK_SHIFT = 0x10;
const int VK_CONTROL = 0x11;
/// <summary>
/// Alt key
/// </summary>
const int VK_MENU = 0x12;
/// <summary>
/// List of scan codes for standard 104-key keyboard US English keyboard
/// </summary>
enum OemScanCode
{
/// <summary>
/// ` ~
/// </summary>
BacktickTilde = 0x29,
/// <summary>
/// 1 !
/// </summary>
N1 = 2,
/// <summary>
/// 2 @
/// </summary>
N2 = 3,
/// <summary>
/// 3 #
/// </summary>
N3 = 4,
/// <summary>
/// 4 $
/// </summary>
N4 = 5,
/// <summary>
/// 5 %
/// </summary>
N5 = 6,
/// <summary>
/// 6 ^
/// </summary>
N6 = 7,
/// <summary>
/// 7 &
/// </summary>
N7 = 8,
/// <summary>
/// 8 *
/// </summary>
N8 = 9,
/// <summary>
/// 9 (
/// </summary>
N9 = 0x0A,
/// <summary>
/// 0 )
/// </summary>
N0 = 0x0B,
/// <summary>
/// - _
/// </summary>
MinusDash = 0x0C,
/// <summary>
/// = +
/// </summary>
Equals = 0x0D,
Backspace = 0x0E,
Tab = 0x0F,
Q = 0x10,
W = 0x11,
E = 0x12,
R = 0x13,
T = 0x14,
Y = 0x15,
U = 0x16,
I = 0x17,
O = 0x18,
P = 0x19,
/// <summary>
/// [ {
/// </summary>
LBracket = 0x1A,
/// <summary>
/// ] }
/// </summary>
RBracket = 0x1B,
/// <summary>
/// | \ (same as pipe)
/// </summary>
VerticalBar = 0x2B,
/// <summary>
/// | \ (same as vertical bar)
/// </summary>
Pipe = 0x2B,
CapsLock = 0x3A,
A = 0x1E,
S = 0x1F,
D = 0x20,
F = 0x21,
G = 0x22,
H = 0x23,
J = 0x24,
K = 0x25,
L = 0x26,
/// <summary>
/// ; :
/// </summary>
SemiColon = 0x27,
/// <summary>
/// ' "
/// </summary>
Quotes = 0x28,
// Unused
Enter = 0x1C,
LShift = 0x2A,
Z = 0x2C,
X = 0x2D,
C = 0x2E,
V = 0x2F,
B = 0x30,
N = 0x31,
M = 0x32,
/// <summary>
/// , <
/// </summary>
Comma = 0x33,
/// <summary>
/// . >
/// </summary>
Period = 0x34,
/// <summary>
/// / ?
/// </summary>
Slash = 0x35,
RShift = 0x36,
LControl = 0x1D,
LAlternate = 0x38,
SpaceBar = 0x39,
RAlternate = 0x138,
RControl = 0x11D,
/// <summary>
/// The menu key thingy
/// </summary>
Application = 0x15D,
Insert = 0x152,
Delete = 0x153,
Home = 0x147,
End = 0x14F,
PageUp = 0x149,
PageDown = 0x151,
UpArrow = 0x148,
DownArrow = 0x150,
LeftArrow = 0x14B,
RightArrow = 0x14D,
NumLock = 0x145,
NumPad0 = 0x52,
NumPad1 = 0x4F,
NumPad2 = 0x50,
NumPad3 = 0x51,
NumPad4 = 0x4B,
NumPad5 = 0x4C,
NumPad6 = 0x4D,
NumPad7 = 0x47,
NumPad8 = 0x48,
NumPad9 = 0x49,
NumPadDecimal = 0x53,
NumPadEnter = 0x11C,
NumPadPlus = 0x4E,
NumPadMinus = 0x4A,
NumPadAsterisk = 0x37,
NumPadSlash = 0x135,
Escape = 1,
PrintScreen = 0x137,
ScrollLock = 0x46,
PauseBreak = 0x45,
LeftWindows = 0x15B,
RightWindows = 0x15C,
F1 = 0x3B,
F2 = 0x3C,
F3 = 0x3D,
F4 = 0x3E,
F5 = 0x3F,
F6 = 0x40,
F7 = 0x41,
F8 = 0x42,
F9 = 0x43,
F10 = 0x44,
F11 = 0x57,
F12 = 0x58,
}
#endregion
protectedoverride bool ProcessKeyMessage(参考消息m)
{
if((m.Msg==WM|KEYDOWN | m.Msg==WM|keydup)&((int)m.WParam==VK|u CONTROL |(int)m.WParam==VK|u SHIFT))
{
KeyEventArgs e=新的KeyEventArgs(Keys.None);
开关((OemScanCode)((int)m.LParam>>16)和0x1FF))
{
案例OemScanCode.L控制:
e=新的KeyEventArgs(Keys.LControlKey);
打破
案例OemScanCode.r控制:
e=新的KeyEventArgs(key.RControlKey);
打破
案例OemScanCode.LShift:
e=新的KeyEventArgs(Keys.LShiftKey);
打破
案例OemScanCode.r换档:
e=新的KeyEventArgs(Keys.rsShift键);
打破
违约:
if((int)m.WParam==VK_移位)
e=新的KeyEventArgs(Keys.ShiftKey);
else if((int)m.WParam==VK_控制)
e=新的KeyEventArgs(Keys.ControlKey);
打破
}
如果(例如KeyData!=Keys.None)
{
如果(m.Msg==WM_KEYDOWN)
OnKeyDown(e);
其他的
OnKeyUp(e);
返回true;
}
}
返回base.ProcessKeyMessage(参考m);
}
#区域扫描代码和窗口消息内容
常量int WM_KEYDOWN=0x100;
常量int WM_KEYUP=0x101;
常数int VK_SHIFT=0x10;
const int VK_CONTROL=0x11;
///
///Alt键
///
const int VK_MENU=0x12;
///
///标准104键键盘美国英语键盘的扫描代码列表
///
枚举OemScanCode
{
///
/// ` ~
///
BacktickTilde=0x29,
///
/// 1 !
///
N1=2,
///
/// 2 @
///
N2=3,
///
/// 3 #
///
N3=4,
///
/// 4 $
///
N4=5,
///
/// 5 %
///
N5=6,
///
/// 6 ^
///
N6=7,
///
/// 7 &
///
N7=8,
///
/// 8 *
///
N8=9,
///
/// 9 (
///
N9=0x0A,
///
/// 0 )
///
N0=0x0B,
///
/// - _
///
最小破折号=0x0C,
///
/// = +
///
等于0x0D,
退格=0x0E,
Tab=0x0F,
Q=0x10,
W=0x11,
E=0x12,
R=0x13,
T=0x14,
Y=0x15,
U=0x16,
I=0x17,
O=0x18,
P=0x19,
///
/// [ {
///
LBracket=0x1A,
///
/// ] }
///
RBracket=0x1B,
///
///|\(与管道相同)
///
垂直杆=0x2B,
///
///|\(与竖杆相同)
///
管道=0x2B,
CapsLock=0x3A,
A=0x1E,
S=0x1F,
D=0x20,
F=0x21,
G=0x22,
H=0x23,
J=0x24,
K=0x25,
L=0x26,
///
/// ; :
///
分号=0x27,
///
/// ' "
///
引号=0x28,
//未使用
输入=0x1C,
LShift=0x2A,
Z=0x2C,
X=0x2D,
C=0x2E,
V=0x2F,
B=0x30,
N=0x31,
M=0x32,
///
/// , <
///
逗号=0x33,
///
/// . >
///
周期=0x34,
///
/// / ?
///
斜杠=0x35,
RShift=0x36,
LControl=0x1D,
LAlternate=0x38,
空格键=0x39,
RAlternate=0x138,
RControl=0x11D,
///
///菜单键什么的
///
应用程序=0x15D,
插入=0x152,
Delete=0x153,
Home=0x147,
End=0x14F,
PageUp=0x149,
PageDown=0x151,