WPF提供了一个HwndSource可以使你更快的实现处理Windows消息。
通过HwndSource.FromHwnd得到的HwndSource可以添加(AddHook)移除(Remove)Hook
首先注册SourceInitialized事件,在事件中创建一个HwndSource对象,
然后利用其AddHook方法来将所有的windows消息附加到一个现有的事件中,这个就是WpfHandleWinowMsg。
代码如下:
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
SourceInitialized += HandleInitialized;
}
public void HandleInitialized(object o,EventArgs e)
{
IntPtr wptr = new WindowInteropHelper(this).Handle;
HwndSource hs = HwndSource.FromHwnd(wptr);
hs.AddHook(new HwndSourceHook(WpfHandleWinowMsg));
}
public IntPtr WpfHandleWinowMsg(IntPtr hwnd, int msg, IntPtr wParam, IntPtr lParam, ref bool handled)
{
//这个函数可以做很多事情,只要是windows消息都会经过,例如注册全局快捷键,修改窗体大小边框,等等
//也可以调API做对应的事情
switch (msg)
{
case 1:
break;
case 2:
break;
default:
break;
}
return IntPtr.Zero;
}
}
顺带说下Winform,直接重载WndProc函数即可
public partial class Form1 : Form
{
int WM_NCLBUTTONDBLCLK = 0xA3;
protected override void WndProc(ref Message m)
{
if (m.Msg == WM_NCLBUTTONDBLCLK)
{
if (this.Height < 35)
{
this.Height = h;
}
else
{
h = this.Height;
this.Height = -10;
}
return;
}
base.WndProc(ref m); //让基类去处理
}
}