包含vb.net按键同时的词条

vb.net的，按键连续触发事件，比如，按着键不放，音量增大。

1.定义变量记录键是否被按下，按下的累计时间

Dim 按下A键  As Boolean

Dim 按下A键时间 As Integer

2.添加一个TextBox1用于接收键盘事件，或者直接用窗体的键盘事件(确保KeyPreview为True)

在KeyDown事件中添加如下代码：

If e.Keycode = keys.A Then 按下A键 = True

在KeyUp事件中添加如下代码：

If e.Keycode = keys.A Then 按下A键 = False

3.添加一个Timer1控件，调整Timer1的Interval来决定按键频率，记得要把Timer1.Enable开启

在Tick事件中添加如下代码：

If 按下A键 = True

按下A键时间+=1

Call 音量设置(按下A键时间 * 10)

End If

PS: 按下的秒数 = 按下A键时间*Timer1.Interval / 1000

相关问答

Q1: VB.net的快捷键

1． F12：转到定义；Shift+F12：转到引用

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Q2: VB.net 怎么制作按键连发功能

用API函数，以下代码Private Declare Function GetWindowLong Lib "user32" Alias "GetWindowLongA" (ByVal hwnd As Long, ByVal nIndex As Long) As LongPrivate Declare Function SetWindowLong Lib "user32" Alias "SetWindowLongA" (ByVal hwnd As Long, ByVal nIndex As Long, ByVal dwNewLong As Long) As Long

Private Declare Function SetLayeredWindowAttributes Lib "user32" (ByVal hwnd As Long, ByVal crKey As Long, ByVal bAlpha As Byte, ByVal dwFlags As Long) As LongPrivate Const WS_EX_LAYERED = H80000

Private Const GWL_EXSTYLE = (-20)

Private Const LWA_ALPHA = H2

Private Const LWA_COLORKEY = H1Private Declare Function SetWindowPos Lib "user32" (ByVal hwnd As Long, ByVal hWndInsertAfter As Long, ByVal X As Long, ByVal Y As Long, ByVal cx As Long, ByVal cy As Long, ByVal wFlags As Long) As Long

Private Const HWND_TOPMosT = -1

Private Const SWP_NOMOVE = H2

Private Const SWP_NosIZE = H1

Private Declare Function GetForegroundWindow Lib "user32" () As Long

Private Declare Function PostMessage Lib "user32" Alias "PostMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Any) As Long

Const WM_KEYDOWN = H100

Const WM_KEYUP = H101

Const WM_CHAR = H102

Const VK_F1 = H70

Private Sub SendF1(hwnd) '调用这个过程即可对目标窗体发送F1键

Call PostMessage(hwnd, WM_KEYDOWN, VK_F1, 0)

Call PostMessage(hwnd, WM_KEYUP, VK_F1, 0)

End Sub这里是发送F1的实例，各个按键对应的虚拟键码，要到网上查