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VB.net获取键盘 vba获取键盘消息( 二 )

IT技术消息


//线程钩子监听鼠标消息设为7，全局钩子监听鼠标消息设为14 。
//
//lpfn 钩子子程的地址指针 。如果dwThreadId参数为0 或是一个由别的进程创建的线程的标识，lpfn必须指向DLL中的钩子子程 。除此以外 ， lpfn可
//以指向当前进程的一段钩子子程代码 。钩子函数的入口地址，当钩子钩到任何消息后便调用这个函数 。
//
//hInstance应用程序实例的句柄 。标识包含lpfn所指的子程的DLL 。如果threadId 标识当前进程创建的一个线程 ， 而且子程代码位于当前
//进程，hInstance必须为NULL 。可以很简单的设定其为本应用程序的实例句柄 。
//
//threadedId 与安装的钩子子程相关联的线程的标识符 。如果为0 ， 钩子子程与所有的线程关联 ， 即为全局钩子 。
//************************************
// 如果设置钩子失败
if(hKeyboardHook == 0 )
{
HookStop();
throw new Exception("SetWindowsHookEx failed.");
}
}
}
// 卸载钩子
public void HookStop()
{
bool retKeyboard = true;
if(hKeyboardHook != 0)
{
retKeyboard = UnhookWindowsHookEx(hKeyboardHook);
hKeyboardHook = 0;
}
if (!( retKeyboard))
throw new Exception("UnhookWindowsHookEx failed.");
}
VB.net 中如何获取键盘输入的ASCii码Private Sub Form1_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles Me.KeyPress
If Asc(0) Then
textbox1.text="0"
end if
end sub
vb.net 回车怎么编程如果是简单的换行用vbcrlf 或 environment.newline
要获得键盘的回车键用api 的
Declare Function GetAsyncKeyState Lib "user32" Alias "GetAsyncKeyState" (ByVal vKey As Long) As Integer
vb.net在for循环中如何获取键盘按键Public Sub TextBox_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs)
Dim SplitStr As String = ","
Dim SelectionStart As Integer = sender.SelectionStart
Dim TextLength As Integer = sender.Text.Length
'------------------------------------------------------------------
Select Case Asc(e.KeyChar)
Case Is = 8 '"回删"
Dim str As String = sender.text
Dim Array = Split(sender.text, ",", -1)
If sender.SelectionStart = str.Length Then
If str.Contains(",") Then
Dim text = ""
For x = 0 To UBound(Array) - 1
If text = "" Then
text += Array(x)
Else
text += "," + Array(x)
End If
Next
sender.text = text
sender.SelectionStart = text.Length
e.KeyChar = Chr(0)
End If
End If
Case Asc("0") To Asc("9") '" 0 to 9 "
e.KeyChar = e.KeyChar
Case Is = 44, 45 '","
Select Case TextLength
Case Is = 0
e.KeyChar = Chr(0)
Case Else
Select Case SelectionStart
【VB.net获取键盘 vba获取键盘消息】Case 0
e.KeyChar = Chr(0)
Case 1 To TextLength - 1
If Mid(sender.text, SelectionStart, 1) = SplitStr Or Mid(sender.text, SelectionStart + 1, 1) = SplitStr Then
e.KeyChar = Chr(0)
Else
e.KeyChar = e.KeyChar
End If
Case TextLength
If Mid(sender.text, SelectionStart, 1) = SplitStr Then
e.KeyChar = Chr(0)
Else
e.KeyChar = e.KeyChar
End If
End Select
End Select
Case Else
e.KeyChar = Chr(0)
End Select
End Sub
这是我的程序中复制过来的,只能输入数据字与逗号还有下划线,你查一下F和J的Ass吗是多少,改写一下就OK
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