KeyUp事件 [英] KeyUp events
问题描述
你好，
我正试图通过KeyUp事件抓住左右箭头键
，如下： br />
public Form1（）
{
InitializeComponent（）;
Form1.ActiveForm.KeyUp + = new
KeyEventHandler（ActiveForm_KeyUp）;
}
void ActiveForm_KeyUp（对象发送者，KeyEventArgs e）
{
if（e.KeyCode == Keys.Left）
MessageBox.Show（" Left arrow key"）;
else if（e.KeyCode == Keys.Right）
MessageBox.Show（"右箭头键）;
}
然而，当我按下按钮时，事件永远不会被调用。我尝试将
事件绑定放在表单加载中，但这也不起作用。
有什么想法吗？
谢谢，
Ben
Hello,
I''m trying to catch the pressing of the left and right arrow keys
through the KeyUp event, like so:
public Form1()
{
InitializeComponent();
Form1.ActiveForm.KeyUp += new
KeyEventHandler(ActiveForm_KeyUp);
}
void ActiveForm_KeyUp(object sender, KeyEventArgs e)
{
if (e.KeyCode == Keys.Left)
MessageBox.Show("Left arrow key");
else if(e.KeyCode == Keys.Right)
MessageBox.Show("Right arrow key");
}
Yet the event is never called when I press a button. I tried putting the
event binding in the form load, but that didn''t work either.
Any ideas?
Thanks,
Ben
推荐答案
" Ben" < el ***** @ gmail.com在消息中写道
news：ud ************** @ TK2MSFTNGP06.phx.gbl ...
"Ben" <el*****@gmail.comwrote in message
news:ud**************@TK2MSFTNGP06.phx.gbl...
您好，
我正试图抓住左右箭头键的按键
KeyUp事件，如下：
public Form1（）
{
InitializeComponent（）;
Form1.ActiveForm.KeyUp + = new
KeyEventHandler（ActiveForm_KeyUp）;
}
void ActiveForm_KeyUp（对象发送者，KeyEventArgs e）
{
if（e.KeyCode == Keys.Left）
MessageBox.Show（" left arrow key"）;
else if（e.KeyCode == Keys.Right）
MessageBox.Show（" Right arrow key"）;
}
然而，当我按下按钮时，事件永远不会被调用。我尝试将
事件绑定放在表单加载中，但这也不起作用。
有什么想法吗？
Hello,
I''m trying to catch the pressing of the left and right arrow keys through
the KeyUp event, like so:
public Form1()
{
InitializeComponent();
Form1.ActiveForm.KeyUp += new
KeyEventHandler(ActiveForm_KeyUp);
}
void ActiveForm_KeyUp(object sender, KeyEventArgs e)
{
if (e.KeyCode == Keys.Left)
MessageBox.Show("Left arrow key");
else if(e.KeyCode == Keys.Right)
MessageBox.Show("Right arrow key");
}
Yet the event is never called when I press a button. I tried putting the
event binding in the form load, but that didn''t work either.
Any ideas?
我认为你需要使用e.Keyvalue。
I think you will need to use e.Keyvalue.
>
谢谢，
Ben
>
Thanks,
Ben
先生。 Arnold写道：
Mr. Arnold wrote:
>
" Ben" < el ***** @ gmail.com在消息中写道
news：ud ************** @ TK2MSFTNGP06.phx.gbl ...
>
"Ben" <el*****@gmail.comwrote in message
news:ud**************@TK2MSFTNGP06.phx.gbl...
>您好，
我正试图通过KeyUp事件抓住左右箭头键的按键
，像这样：
public Form1（）
{InitialifyComponent（）;
Form1.ActiveForm.KeyUp + = new
KeyEventHandler（ActiveForm_KeyUp）;
}
void ActiveForm_KeyUp（对象发送者，KeyEventArgs e）
{
if（e.KeyCode == Keys.Left）
MessageBox.Show（ 左箭头键）;
否则if（e.KeyCode == Keys.Right）
MessageBox.Show（" Right arrow key"）;
}
<但是当我按下按钮时，事件永远不会被调用。我尝试将
事件绑定放在表单加载中，但这也不起作用。
任何想法？
>Hello,
I''m trying to catch the pressing of the left and right arrow keys
through the KeyUp event, like so:
public Form1()
{
InitializeComponent();
Form1.ActiveForm.KeyUp += new
KeyEventHandler(ActiveForm_KeyUp);
}
void ActiveForm_KeyUp(object sender, KeyEventArgs e)
{
if (e.KeyCode == Keys.Left)
MessageBox.Show("Left arrow key");
else if(e.KeyCode == Keys.Right)
MessageBox.Show("Right arrow key");
}
Yet the event is never called when I press a button. I tried putting
the event binding in the form load, but that didn''t work either.
Any ideas?
我认为你需要使用e.Keyvalue。
I think you will need to use e.Keyvalue.
>> ;
谢谢，
Ben
>>
Thanks,
Ben
这不是问题所在。当它在函数的第一行放置一个
断点时它甚至不会停止执行，这让我相信它甚至不会被调用。 br />
That''s not the problem. It doesn''t even stop executing when putting a
breakpoint on the first line of the function, which leads me to believe
it''s not even called.
可能是事件未达到表格？当你有一个没有任何子控制的空表格时，你会遇到同样的问题吗？
SG
"本" < el ***** @ gmail.com在消息中写道
news：ud ************** @ TK2MSFTNGP06.phx.gbl ...
May be the event is not reaching the form? Do you get the same problem when
you have an empty form without any child controls?
SG
"Ben" <el*****@gmail.comwrote in message
news:ud**************@TK2MSFTNGP06.phx.gbl...
您好，
我正试图抓住左右箭头键的按键
KeyUp事件，如下：
public Form1（）
{
InitializeComponent（）;
Form1.ActiveForm.KeyUp + = new
KeyEventHandler（ActiveForm_KeyUp）;
}
void ActiveForm_KeyUp（对象发送者，KeyEventArgs e）
{
if（e.KeyCode == Keys.Left）
MessageBox.Show（" left arrow key"）;
else if（e.KeyCode == Keys.Right）
MessageBox.Show（" Right arrow key"）;
}
然而，当我按下按钮时，事件永远不会被调用。我尝试将
事件绑定放在表单加载中，但这也不起作用。
有什么想法吗？
谢谢，
Ben
Hello,
I''m trying to catch the pressing of the left and right arrow keys through
the KeyUp event, like so:
public Form1()
{
InitializeComponent();
Form1.ActiveForm.KeyUp += new
KeyEventHandler(ActiveForm_KeyUp);
}
void ActiveForm_KeyUp(object sender, KeyEventArgs e)
{
if (e.KeyCode == Keys.Left)
MessageBox.Show("Left arrow key");
else if(e.KeyCode == Keys.Right)
MessageBox.Show("Right arrow key");
}
Yet the event is never called when I press a button. I tried putting the
event binding in the form load, but that didn''t work either.
Any ideas?
Thanks,
Ben
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