Question

随意编辑标题。

好的，所以我正在尝试创建一个短按键，跳到任何媒体播放器的下一首歌？就像FN + F11中的一些键盘一样，它转到下一首歌，无论如何都要将它集成到我自己键盘的c＃中？到目前为止我有这个代码，但它所做的只是在文本框1上发布一个msg。

// Structure contain information about low-level keyboard input event 
[StructLayout(LayoutKind.Sequential)]
private struct KBDLLHOOKSTRUCT
{
    public Keys key;
    public int scanCode;
    public int flags;
    public int time;
    public IntPtr extra;
}
//System level functions to be used for hook and unhook keyboard input  
private delegate IntPtr LowLevelKeyboardProc(int nCode, IntPtr wParam, IntPtr lParam);
[DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
private static extern IntPtr SetWindowsHookEx(int id, LowLevelKeyboardProc callback, IntPtr hMod, uint dwThreadId);
[DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
private static extern bool UnhookWindowsHookEx(IntPtr hook);
[DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
private static extern IntPtr CallNextHookEx(IntPtr hook, int nCode, IntPtr wp, IntPtr lp);
[DllImport("kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)]
private static extern IntPtr GetModuleHandle(string name);
[DllImport("user32.dll", CharSet = CharSet.Auto)]
private static extern short GetAsyncKeyState(Keys key);
//Declaring Global objects     
private IntPtr ptrHook;
private LowLevelKeyboardProc objKeyboardProcess;

private IntPtr captureKey(int nCode, IntPtr wp, IntPtr lp)
{
    if (nCode >= 0)
    {
        KBDLLHOOKSTRUCT objKeyInfo = (KBDLLHOOKSTRUCT)Marshal.PtrToStructure(lp, typeof(KBDLLHOOKSTRUCT));

        // Keys
        if (objKeyInfo.key == Keys.F10 && ModifierKeys == Keys.Alt)
        {
            textBox1.Focus();
            a += 1;
            c += 1;
            textBox1.Text += Convert.ToString(c) + ". " + "Previous Song" + Environment.NewLine;
            PrevSongCount.Text = Convert.ToString(a);
            AllUpCount.Text = Convert.ToString(c);
            return (IntPtr)1;
        }
        if (objKeyInfo.key == Keys.F11 && ModifierKeys == Keys.Alt)
        {
            textBox1.Focus();
            b += 1;
            c += 1;
            textBox1.Text += Convert.ToString(c) + ". " + "Next Song" + Environment.NewLine;
            NextSongCount.Text = Convert.ToString(b);
            AllUpCount.Text = Convert.ToString(c);
            return (IntPtr)1;
        }
    }
    return CallNextHookEx(ptrHook, nCode, wp, lp);
}
bool HasAltModifier(int flags)
{
    return (flags & 0x20) == 0x20;
}

Answer 1

这并不像我想象的那么容易。但最后我设法做到了，解决方案非常简单。

编译完成后，您正在使用古老的虚拟媒体键盘代码。 http://msdn.microsoft.com/en-us/library/dd375731%28v=VS.85%29.aspx

我使用这个cmd line prog为我的微软自然键盘没有媒体键，但有5个可编程键，并让它工作你破解注册表

HKEY_CURRENT_USER \ Software \ Microsoft \ IntelliType Pro \ EventMapping \ 82或

HKEY_CURRENT_USER \ Software \ Microsoft \ IntelliType Pro \ ModelSpecific \ 1016 \ EventMapping \ 82

其中81只是其中一个动态键（78-82）并将值上一个或下一个放入Arguments键中。

using System;
using System.Runtime.InteropServices;

namespace NxtTrack
{    
class Program
{
    [DllImport("user32.dll")]
    private static extern bool PostMessage(IntPtr hWnd, uint Msg, UIntPtr wParam, IntPtr lParam);
    [DllImport("user32.dll")]
    public static extern void keybd_event(byte vkCode, byte scanCode, int flags, IntPtr extraInfo);

    enum TrackMove
    {
        Previous,Next
    }

    static void Main(string[] args)
    {

        TrackMove trackMove;

        try
        {
            if(args[0].ToLower().Contains("previous"))
                trackMove = TrackMove.Previous;
            else if(args[0].ToLower().Contains("next"))
                trackMove = TrackMove.Next;
            else
            {
                throw new Exception("wrong param");
            }
        }
        catch
        {
            Console.WriteLine("Params needed: Next or Previous");
            return;
        }
        TrackKeys(trackMove);
    }

    private static void TrackKeys(TrackMove trackMove)
    {
        //http://msdn.microsoft.com/en-us/library/dd375731%28v=VS.85%29.aspx

        byte msg = trackMove == TrackMove.Previous ? (byte)0xB1 : (byte)0xB0;
        keybd_event(msg, 0x45, 0, IntPtr.Zero);
    }
}
}

外部媒体播放器的下一首歌曲按钮？

1 个答案: