我如何关闭文本框中的大写锁定键。我正在使用 WPF 表单。
当文本框聚焦时,我想关闭大写锁定。
谢谢
很简单,首先添加命名空间
using System.Runtime.InteropServices;
然后在类中声明
[DllImport("user32.dll")]
static extern void keybd_event(byte bVk, byte bScan, uint dwFlags,
UIntPtr dwExtraInfo);
最后,在 textBox_Enter 事件中添加此代码
private void textBox1_Enter(object sender, EventArgs e)
{
if (Control.IsKeyLocked(Keys.CapsLock)) // Checks Capslock is on
{
const int KEYEVENTF_EXTENDEDKEY = 0x1;
const int KEYEVENTF_KEYUP = 0x2;
keybd_event(0x14, 0x45, KEYEVENTF_EXTENDEDKEY, (UIntPtr)0);
keybd_event(0x14, 0x45, KEYEVENTF_EXTENDEDKEY | KEYEVENTF_KEYUP,
(UIntPtr)0);
}
}
此代码将关闭 Capslock .. 我在 enter 事件中使用了它,您可以根据您的要求添加它!
在此处查看此链接
Use this code for WPF froms.
private void txt_KeyDown(object sender, KeyEventArgs e)
{
if (Keyboard.GetKeyStates(Key.CapsLock) == KeyStates.Toggled) // Checks Capslock is on
{
const int KEYEVENTF_EXTENDEDKEY = 0x1;
const int KEYEVENTF_KEYUP = 0x2;
keybd_event(0x14, 0x45, KEYEVENTF_EXTENDEDKEY, (UIntPtr)0);
keybd_event(0x14, 0x45, KEYEVENTF_EXTENDEDKEY | KEYEVENTF_KEYUP,
(UIntPtr)0);
}
}