如何在Motorola MC75上禁用发送键和结束键

Question

如何在Motorola MC75上禁用发送键和结束键？

我需要任何C＃示例代码

提前致谢

Answer 1

我在MSDN论坛上回答了这个问题。

您可以使用AllKeys API来执行此操作。

在C＃中使用它的P / Invoke签名位于： http : //blogs.msdn.com/b/mikefrancis/archive/2009/03/28/porting-gapi-keys-to-wm-6-1-and -6-5.aspx

有关其用法的一个很好的一般说明在这里： http : //windowsteamblog.com/windows_phone/b/windowsphone/archive/2009/07/14/just-say-no-to-gapi-what-you-need-to-知道-约-allkeys和输入，management.aspx

Answer 2

使用Motorola AppCenter限制正在运行的应用程序。 它允许您阻止键，程序等。

Answer 3

编辑：我之前不知道PaulH发布的“ AllKeys”解决方案，这应该比我发布的解决方案更好。

我假设您要处理绿色和红色硬件键？ 通话和挂断键？

在这种情况下，您可以监视按键事件，并选择在它们符合您的条件时不将其传递给Windows。

private const int WH_KEYBOARD_LL = 20;
private static int _hookHandle;
private HookProc _hookDelegate;

[DllImport("coredll.dll")]
private static extern int SetWindowsHookEx(int type, HookProc hookProc, IntPtr       hInstance, int m);

[DllImport("coredll.dll")]
private static extern IntPtr GetModuleHandle(string mod);

[DllImport("coredll.dll", SetLastError = true)]
private static extern int UnhookWindowsHookEx(int idHook);

[DllImport("coredll.dll")]
private static extern int CallNextHookEx(HookProc hhk, int nCode, IntPtr wParam, IntPtr lParam);


private bool HookKeyboardEvent(bool action)
{
try
{
    if (action)
    {
        HookKeyboardEvent(false);

        _hookDelegate = new HookProc(HookProcedure);
        _hookHandle = SetWindowsHookEx(WH_KEYBOARD_LL, _hookDelegate, GetModuleHandle(null), 0);

        if (_hookHandle == 0)
        {
            return false;
        }
        return true;
    }
    if (_hookHandle != 0)
    {
        //Unhook the previouse one
        UnhookWindowsHookEx(_hookHandle);
        return true;
    }
    return false;
}
catch (Exception ex)
{
    string dump = ex.Message;
    return false;
}
}

private int HookProcedure(int code, IntPtr wParam, IntPtr lParam)
{
try
{
    var hookStruct = (KBDLLHOOKSTRUCT) Marshal.PtrToStructure(lParam, typeof (KBDLLHOOKSTRUCT));
    if (DoHardwareKeyPress(hookStruct.vkCode, hookStruct.scanCode, wParam.ToInt32()))
        return CallNextHookEx(_hookDelegate, code, wParam, lParam);
    else
        return -1;
}
catch (Exception ex)
{
    string dump = ex.Message;
    return -1;
}
}

private bool DoHardwareKeyPress(int softKey, int hardKey, int keyState)
{
try
{
    string keyPressInformation = string.Format("SoftKey = {0}, HardKey = {1}, KeyState = {2}", softKey, hardKey,
                                               keyState);
    if (softKey == 114 && hardKey == 4 && (keyState == 256 || keyState == 257))
        return false;
    else if (softKey == 115 && hardKey == 12 && (keyState == 256 || keyState == 257))
        return false;
    else
        return true;
}
catch (Exception ex)
{
    string dump = ex.Message;
    return true;
}
}

#region Nested type: HookProc

internal delegate int HookProc(int code, IntPtr wParam, IntPtr lParam);

#endregion

#region Nested type: KBDLLHOOKSTRUCT

private struct KBDLLHOOKSTRUCT
{
public IntPtr dwExtraInfo;
public int flags;
public int scanCode;
public int time;
public int vkCode;
}

#endregion

这是一个快速且肮脏的解决方案，您可能想在使用前对其进行清理：）只需调用HookKeyboardEvent（true）即可​​启用挂钩，并取消挂钩HookKeyboardEvent（false）。

我希望它能解决您的问题。