请指导我如何使用这个WndProc
在 Windows 窗体应用程序中:
private IntPtr WndProc(IntPtr hwnd, int msg, IntPtr wParam, IntPtr lParam, ref bool handled)
{
if (msg == NativeCalls.APIAttach && (uint)lParam == NativeCalls.SKYPECONTROLAPI_ATTACH_SUCCESS)
{
// Get the current handle to the Skype window
NativeCalls.HWND_BROADCAST = wParam;
handled = true;
return new IntPtr(1);
}
// Skype sends our program messages using WM_COPYDATA. the data is in lParam
if (msg == NativeCalls.WM_COPYDATA && wParam == NativeCalls.HWND_BROADCAST)
{
COPYDATASTRUCT data = (COPYDATASTRUCT)Marshal.PtrToStructure(lParam, typeof(COPYDATASTRUCT));
StatusTextBox.AppendText(data.lpData + Environment.NewLine);
// Check for connection
if (data.lpData.IndexOf("CONNSTATUS ONLINE") > -1)
ConnectButton.IsEnabled = false;
// Check for calls
IsCallInProgress(data.lpData);
handled = true;
return new IntPtr(1);
}
return IntPtr.Zero;
}
我见过有人在 WPF 中以这种方式使用上面的代码,比如
protected override void OnSourceInitialized(EventArgs e)
{
base.OnSourceInitialized(e);
// Attach WndProc
HwndSource source = PresentationSource.FromVisual(this) as HwndSource;
source.AddHook(WndProc);
}
您可以使用应用程序.AddMessageFilter Method.
[SecurityPermission(SecurityAction.LinkDemand, Flags = SecurityPermissionFlag.UnmanagedCode)]
public class TestMessageFilter : IMessageFilter
{
public bool PreFilterMessage(ref Message m)
{
// Blocks all the messages relating to the left mouse button.
if (m.Msg >= 513 && m.Msg <= 515)
{
Console.WriteLine("Processing the messages : " + m.Msg);
return true;
}
return false;
}
}
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