public void Run(Window owner)
{
NativeMethods.CBTProc CenterChildHookProc = new NativeMethods.CBTProc(CenterChildCallBack);
// 分配新的GCHandle，保护对象不被垃圾回收
_gch = GCHandle.Alloc(CenterChildHookProc);
_parent = new WindowInteropHelper(owner).Handle; // 父窗体句柄
// 注意：dwThreadId为System.Threading.Thread.CurrentThread.ManagedThreadId不起作用
_hhk = NativeMethods.SetWindowsHookEx(WH_CBT, CenterChildHookProc, IntPtr.Zero, NativeMethods.GetCurrentThreadId());
}
public void Run(Window owner)
{
NativeMethods.CBTProc CenterChildHookProc = new NativeMethods.CBTProc(CenterChildCallBack);
// 分配新的GCHandle，保护对象不被垃圾回收
_gch = GCHandle.Alloc(CenterChildHookProc);
_parent = new WindowInteropHelper(owner).Handle; // 父窗体句柄
// 注意：dwThreadId为System.Threading.Thread.CurrentThread.ManagedThreadId不起作用
_hhk = NativeMethods.SetWindowsHookEx(WH_CBT, CenterChildHookProc, IntPtr.Zero, NativeMethods.GetCurrentThreadId());
}
public MainWindow()
{
InitializeComponent();
this.WindowState = WindowState.Maximized;
// create an instance of the delegate that
// won't be garbage collected to avoid:
// Managed Debugging Assistant 'CallbackOnCollectedDelegate' :**
// 'A callback was made on a garbage collected delegate of type
// 'WpfApp1!WpfApp1.MainWindow+NativeMethods+CBTProc::Invoke'.
// This may cause application crashes, corruption and data loss.
// When passing delegates to unmanaged code, they must be
// kept alive by the managed application until it is guaranteed
// that they will never be called.'
_callback = this.CallBack;
_hook = NativeMethods.SetWindowsHookEx(
NativeMethods.HookType.WH_MOUSE,
_callback,
instancePtr: IntPtr.Zero,
threadID: NativeMethods.GetCurrentThreadId());
this.Closed += MainWindow_Closed;
this.Loaded += MainWindow_Loaded;
}
