我要评论本文实例讲述了c#控制键盘按键的常用方法。分享给大家供大家参考。具体实现方法如下：
using system;
using system.collections.generic;
using system.componentmodel;
using system.data;
using system.drawing;
using system.text;
using system.windows.forms;
using system.runtime.interopservices;
namespace sn设置键盘大小写
{
public partial class form1 : form
{
const uint keyeventf_extendedkey = 0x1;
const uint keyeventf_keyup = 0x2;
[dllimport("user32.dll")]
static extern short getkeystate(int nvirtkey);
[dllimport("user32.dll")]
static extern void keybd_event(byte bvk, byte bscan, uint dwflags, uint dwextrainfo);
public enum virtualkeys : byte
{
vk_numlock = 0x90, //数字锁定键
vk_scroll = 0x91, //滚动锁定
vk_capital = 0x14, //大小写锁定
vk_a = 62
}
public form1()
{
initializecomponent();
}
public static bool getstate(virtualkeys key)
{
return (getkeystate((int)key)==1);
}
public static void setstate(virtualkeys key, bool state)
{
if (state != getstate(key))
{
keybd_event((byte)key, 0x45, keyeventf_extendedkey | 0, 0);
keybd_event((byte)key, 0x45, keyeventf_extendedkey | keyeventf_keyup, 0);
}
}
//开启键盘大写
private void btnopencapital_click(object sender, eventargs e)
{
setstate(virtualkeys.vk_capital, true);
}
//关闭键盘大写
private void btnclosecapital_click(object sender, eventargs e)
{
setstate(virtualkeys.vk_capital, false);
}
//开启键盘滚动锁定
private void btnopenscroll_click(object sender, eventargs e)
{
setstate(virtualkeys.vk_scroll, true);
}
//关闭键盘滚动锁定
private void btnclosescroll_click(object sender, eventargs e)
{
setstate(virtualkeys.vk_scroll, false);
}
//开启键盘数字锁定键
private void btnopennum_click(object sender, eventargs e)
{
setstate(virtualkeys.vk_numlock, true);
}
//关闭键盘数字锁定键
private void btnclosenum_click(object sender, eventargs e)
{
setstate(virtualkeys.vk_numlock, false);
}
}
}
希望本文所述对大家的c#程序设计有所帮助。
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