private bool WndProcForFocus(ref Message m)
{
const int SC_MAXIMIZE = 0xF030;
const int SC_RESTORE = 0xF120;
switch ((uint)m.Msg)
{
case WinAPI.WM.NCLBUTTONDOWN:
// This is in conjunction with the WM_NCMOUSEMOVE. We cannot detect
// WM_NCLBUTTONUP because it gets swallowed up on many occasions. As a result
// we detect the button down and check the NCMOUSEMOVE to see if it has
// changed location. If the mouse location is different, then we let
// the resize handler deal with the focus. If not, then we assume that it
// is a mouseup action.
this.m_lastMouseDownOnTitleBar = DateTime.Now;
m_mouseDownLocation = new Point(GET_X_LPARAM((int)m.LParam), GET_Y_LPARAM((int)m.LParam));
break;
case WinAPI.WM.NCMOUSEMOVE:
Point currentLocation = new Point(GET_X_LPARAM((int)m.LParam), GET_Y_LPARAM((int)m.LParam));
if ((this.m_lastMouseDownOnTitleBar - DateTime.Now < this.m_delayUntilMouseMove) &&
currentLocation == m_mouseDownLocation)
{
FocusCurrentTab();
}
break;
case WinAPI.WM.NCACTIVATE:
// Never allow this window to display itself as inactive
WinAPI.DefWindowProc(this.Handle, m.Msg, (IntPtr)1, m.LParam);
m.Result = (IntPtr)1;
return(false);
case WinAPI.WM.SYSCOMMAND:
// Check for maximizing and restoring from maxed.
// Removing the last 4 bits. This is necessary because
// maximizing by double click gives you 0xF032, not 0xF030.
switch ((int)m.WParam & 0xFFF0)
{
case SC_MAXIMIZE:
case SC_RESTORE:
FocusCurrentTab();
break;
}
break;
default:
if (m.Msg == m_shellHookNotify)
{
switch (m.WParam.ToInt32())
{
case 4:
IntPtr current = WinAPI.GetForegroundWindow();
if (current != this.Handle && !ContainsChild(current))
{
m_externalWindow = true;
}
else if (m_externalWindow)
{
m_externalWindow = false;
WinAPI.BringWindowToTop(this.Handle);
FocusCurrentTab();
}
break;
default:
break;
}
}
break;
}
return(true);
}
public void ResetTopmost()
{
WinAPI.BringWindowToTop(this.Handle);
}