翻天伏地求助WPF 全局热键实现呀。。。

[Athenaeum]

winform中实现了，
拿到WPF中却不行了，
怀疑有个地方用windows.form 获得键盘消息来实现的，
可能是这的问题，有谁做过呀？？

[leo_bogard]

up

[Athenaeum]

自己顶

[Foxer]

点数太少 ^_^

[Foxer]

方法一：用Command实现，在主窗口上定义一个Command，并添加热键
方法二：用EventManager.RegisterRoutedEvent绑定按键事件

别的还没想到，暂时就这些 :)

[LorenLiu]

需要调用API

[DllImport("user32.dll", SetLastError = true)]
private static extern IntPtr SetWindowsHookEx(int idHook, HookHandlerDelegate callbackPtr, IntPtr hInstance, uint dwThreadId);

[DllImport("user32.dll", SetLastError = true)]
private static extern bool UnhookWindowsHookEx(IntPtr hhk);

[DllImport("user32.dll", SetLastError = true)]
private static extern IntPtr CallNextHookEx(IntPtr hhk, int nCode, IntPtr wParam, ref KBHookStruct lParam);


可以参考http://www.codeproject.com/KB/WPF/ShapeShow.aspx

[WizCas]

mark

[zanezeng_GC]

http://www.cnblogs.com/zengezenge/archive/2009/07/09/1519582.html

[kissyou886]

首先要知道Widndow类里没有 WndProc 函数了，想要截取 Windows 消息必须借助 HwndSource 添加 Hook。
给说下，我的简单实现方法，便于入门学习。
1.通过RegisterHotKey注册全局热键；
2.借助 HwndSource 添加 Hook，建议与RegisterHotKey一起在继承的OnSourceInitialized里实现；
3.再使用自己定义的WndProc来截取Windows 消息；
4.程序退出时使用UnRegisterHotKey注销热键。

下面代码是简单实现的一个Esc全局热键：

[DllImport("user32.dll")]
public static extern bool RegisterHotKey(IntPtr hWnd, int id, uint control, System.Windows.Forms.Keys keys);
[DllImport("user32.dll")]
public static extern bool UnregisterHotKey(IntPtr hWnd, int id);

public static int WM_HOTKEY = 0x0312;
public Window1()
{
InitializeComponent();
this.Closed+=new EventHandler(Window1_Closed);
}
void Window1_Closed(object sender, EventArgs e)
{
IntPtr hWnd = new WindowInteropHelper(this).Handle;
UnregisterHotKey(hWnd, 123);
}
protected override void OnSourceInitialized(EventArgs e)
{
base.OnSourceInitialized(e);
IntPtr hWnd = new WindowInteropHelper(this).Handle;
RegisterHotKey(hWnd, 123, 0, System.Windows.Forms.Keys.Escape);

HwndSource source = PresentationSource.FromVisual(this) as HwndSource;
source.AddHook(WndProc);
}

private IntPtr WndProc(IntPtr hwnd, int msg, IntPtr wParam, IntPtr lParam, ref bool handled)
{
if (msg == WM_HOTKEY)
{
if (wParam.ToInt32() == 123)
{
MessageBox.Show("OK");
handled=true;
}
}
return IntPtr.Zero;
}

[li45214521]

LZ 可以试试这个ComponentDispatcher静态类

[超维电脑科技]

[Quote=引用 5 楼 lorenliu 的回复:]
需要调用API

[DllImport("user32.dll", SetLastError = true)]
        private static extern IntPtr SetWindowsHookEx(int idHook, HookHandlerDelegate callbackPtr, IntPtr hInstance, uint dwThreadId);

        [DllImport("user32.dll", SetLastError = true)]
        private static extern bool UnhookWindowsHookEx(IntPtr hhk);

        [DllImport("user32.dll", SetLastError = true)]
        private static extern IntPtr CallNextHookEx(IntPtr hhk, int nCode, IntPtr wParam, ref KBHookStruct lParam);


可以参考http://www.codeproject.com/KB/WPF/ShapeShow.aspx
[/Quote]
UP

[龙宜坡]

"翻天伏地"

[kala_yue]

WPF 注册热键 http://www.cnblogs.com/alvinyue/archive/2011/08/03/2126022.html