在处理 Control.OnKeyPress
事件时,有一个 KeyPressEventArgs
包含一个 KeyChar
.
When handling Control.OnKeyPress
event, there is a KeyPressEventArgs
that contains a KeyChar
.
出于可用性原因,我需要完全相同的 KeyChar
但在处理 OnKeyDown
事件时.
For usability reasons I need exactly the same KeyChar
but when handling OnKeyDown
event.
KeyEventArgs
不包含任何与字符相关的数据.我的意思是,如果在有或没有 Shift
的情况下按下 A
键,它不会影响 KeyCode
、KeyData
或 键值
.使用另一种语言时也是如此,我仍然得到大写的英文值.
The KeyEventArgs
does not contains any char related data. I mean, if press the A
key with or without Shift
its not affecting the KeyCode
, KeyData
or KeyValue
. The same when using another language, i still getting capital english values.
如何在KeyDown
事件中获取KeyPressEventArgs.KeyChar
?
谢谢.
转换它.这是将A"转换为a"的简单函数.它只转换 [A-Z] 集合中的大写字符.值 32 是 'A' 和 'a' 之间的差异.当然您可以将其扩展到您的要求,或者在此处询问功能.
Convert it. Here is simple function for converting 'A' to 'a'. It converts only capital chars from [A-Z] set. The value 32 is diff between 'A' and 'a'.. Sure you can extend it to your requirements, or ask for feature here.
char getChar( KeyEventArgs e )
{
int keyValue = e.KeyValue;
if ( !e.Shift && keyValue >= (int) Keys.A && keyValue <= (int) Keys.Z )
return (char)(keyValue + 32);
return (char) keyValue;
}
如果您需要它与您当前的文化一起使用,您应该覆盖 ProcessKeyMessage 控制方法:
if you need it to works with your current culture you should override ProcessKeyMessage Control method:
protected override bool ProcessKeyMessage( ref Message m )
{
if ( ( m.Msg == 0x102 ) || ( m.Msg == 0x106 ) ) // this is special - don't remove
{
char c = (char) m.WParam; // here is your char for OnKeyDown event ;)
}
return base.ProcessKeyMessage( ref m );
}
希望对您有所帮助.
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