c# – 如何将一些按键转换为其他按键？

http://www.codeproject.com/KB/cs/globalhook.aspx

我单独使用此(和SendKeys)完全满足您的需要,您需要使用Handle = true来阻止原始密钥消息.

SendKeys有点难看……如果您愿意,可以寻找替代品……但SendKeys会为您效劳.

使用SendKeys,它是这样的：

private void HookManager_KeyDown(object sender,KeyEventArgs e)
    {
        if (e.KeyCode == Keys.D){
            e.Handled = true;
            SendKeys.Send("F");
        }
    }

我实际上也使用这种方法来确定什么样的prccess’窗口是焦点,所以如果你在另一个应用程序上,应用程序将什么都不做：

/// <summary>
    /// The GetForegroundWindow function returns a handle to the foreground window.
    /// </summary>
    [DllImport("user32.dll")]
    static extern IntPtr GetForegroundWindow();

    static bool IsProcessFocused(string processname)
    {
        if (processname == null || processname.Length == 0)
        {
            throw new ArgumentNullException("processname");
        }

        Process[] runninProcesses = Process.GetProcessesByName(processname);
        IntPtr activeWindowHandle = GetForegroundWindow();

        foreach (Process process in runninProcesses)
        {
            if (process.MainWindowHandle.Equals(activeWindowHandle))
            {
                return true;
            }
        }

        // Process was not found or didn't had the focus.
        return false;
    }