[英]SendKey command C#
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我正在使用下面的InterceptKeys類更改某些鍵。 例如,當我鍵入方括號鍵“ [”時,我想將其更改為“ë”(無論我在計算機中鍵入的是什么,而不是特定程序的)。 我使用一個SendKey.Send(“ë”); 無論何時鍵入“ [”,但問題是在“ë”之后還鍵入了“ [”。 是否可以將“ [”替換為“ë”或任何鍵,或者取消“ [”並僅發送“ë”?
class InterceptKeys
{
private const int WH_KEYBOARD_LL = 13;
private const int WM_KEYDOWN = 0x0100;
private static LowLevelKeyboardProc _proc = HookCallback;
private static IntPtr _hookID = IntPtr.Zero;
public static void Main()
{
_hookID = SetHook(_proc);
Application.Run();
UnhookWindowsHookEx(_hookID);
}
private static IntPtr SetHook(LowLevelKeyboardProc proc)
{
using (Process curProcess = Process.GetCurrentProcess())
using (ProcessModule curModule = curProcess.MainModule)
{
return SetWindowsHookEx(WH_KEYBOARD_LL, proc,
GetModuleHandle(curModule.ModuleName), 0);
}
}
private delegate IntPtr LowLevelKeyboardProc(
int nCode, IntPtr wParam, IntPtr lParam);
private static IntPtr HookCallback(
int nCode, IntPtr wParam, IntPtr lParam)
{
if (nCode >= 0 && wParam == (IntPtr)WM_KEYDOWN)
{
int vkCode = Marshal.ReadInt32(lParam);
//Console.WriteLine((Keys)vkCode);
if (vkCode == (int)Keys.OemOpenBrackets))
{
SendKeys.Send("ë");
}
}
return CallNextHookEx(_hookID, nCode, wParam, lParam);
}
[DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
private static extern IntPtr SetWindowsHookEx(int idHook,
LowLevelKeyboardProc lpfn, IntPtr hMod, uint dwThreadId);
[DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
[return: MarshalAs(UnmanagedType.Bool)]
private static extern bool UnhookWindowsHookEx(IntPtr hhk);
[DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
private static extern IntPtr CallNextHookEx(IntPtr hhk, int nCode,
IntPtr wParam, IntPtr lParam);
[DllImport("kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)]
private static extern IntPtr GetModuleHandle(string lpModuleName);
}
如果您處理了密鑰而不是調用CallNextHookEx
則返回1。
IE, HookCallback()
應該看起來像這樣
private static IntPtr HookCallback(
int nCode, IntPtr wParam, IntPtr lParam)
{
if (nCode >= 0 && wParam == (IntPtr)WM_KEYDOWN)
{
int vkCode = Marshal.ReadInt32(lParam);
//Console.WriteLine((Keys)vkCode);
if (vkCode == (int)Keys.OemOpenBrackets))
{
SendKeys.Send("ë");
return 1;
}
}
return CallNextHookEx(_hookID, nCode, wParam, lParam);
}
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