適当に書いてみた。
public partial class Form1 : Form, IMessageFilter
{
public Form1()
{
InitializeComponent();
AddMessage();
}
private void AddMessage()
{
Application.AddMessageFilter(this);
}
private void RemoveMessage()
{
Application.RemoveMessageFilter(this);
}
#region IMessageFilter メンバ
[DllImport("user32.dll", ExactSpelling = true, CharSet = CharSet.Auto)]
public static extern IntPtr GetParent(IntPtr hWnd);
public bool PreFilterMessage(ref Message m)
{
const int WM_MOUSEMOVE = 0x200;
const int WM_LBUTTONDOWN = 0x201;
const int WM_LBUTTONUP = 0x202;
const int WM_LBUTTONDBLCLK = 0x203;
const int WM_RBUTTONDOWN = 0x204;
const int WM_RBUTTONUP = 0x205;
const int WM_RBUTTONDBLCLK = 0x206;
const int WM_MBUTTONDOWN = 0x207;
const int WM_MBUTTONUP = 0x208;
const int WM_MBUTTONDBLCLK = 0x209;
const int WM_MOUSEWHEEL = 0x20A;
const int WM_MOUSEHWHEEL = 0x20E;
if (!this.IsDisposed)
{
if (m.HWnd != this.Handle)
{
switch (m.Msg)
{
case WM_MOUSEMOVE:
case WM_LBUTTONDOWN:
case WM_LBUTTONUP:
case WM_LBUTTONDBLCLK:
case WM_RBUTTONDOWN:
case WM_RBUTTONUP:
case WM_RBUTTONDBLCLK:
case WM_MBUTTONDOWN:
case WM_MBUTTONUP:
case WM_MBUTTONDBLCLK:
case WM_MOUSEWHEEL:
case WM_MOUSEHWHEEL:
IntPtr parent;
parent = m.HWnd;
do
{
parent = GetParent(parent);
if (parent == this.Handle)
{
this.WndProc(ref m); //本当はきちんと振り分けたほうがいい
break;
}
} while (parent != IntPtr.Zero);
break;
}
}
}
return false;
}
#endregion
protected override void Dispose(bool disposing)
{
if (disposing && (components != null))
{
RemoveMessage();
components.Dispose();
}
base.Dispose(disposing);
}
}
