//IntPtr IMdiClientWindow.Handle => base.Handle;
internal JwMdiClientSubclass(JwMdiManager mdiManager)
{
_manager = mdiManager;
UpdateBorderStyle();
}
protected override void WndProc(ref Message m)
{
JwMdiManager ultraTabbedMdiManager = _manager;
if (ultraTabbedMdiManager == null)
{
base.WndProc(ref m);
return;
}
switch (m.Msg)
{
case (int)WinApi.Messages.WM_MDIRESTORE:
case (int)WinApi.Messages.WM_MDIMAXIMIZE:
case (int)WinApi.Messages.WM_MDITILE:
case (int)WinApi.Messages.WM_MDICASCADE:
case (int)WinApi.Messages.WM_MDIICONARRANGE:
//if (ultraTabbedMdiManager.Enabled)
//{
m.Result = IntPtr.Zero;
return;
//}
//break;
case (int)WinApi.Messages.WM_MDINEXT:
{
Form mdiChild = null;
if (m.WParam == IntPtr.Zero)
{
Control control = Control.FromChildHandle(base.Handle);
if (control is Form)
{
mdiChild = ((Form)control).ActiveMdiChild;
}
}
else
{
mdiChild = (Control.FromHandle(m.WParam) as Form);
}
bool forward = m.LParam == IntPtr.Zero;
Form nextWindow = GetNextWindow(mdiChild, forward);
if (ultraTabbedMdiManager.TabNavigationMode == MdiTabNavigationMode.VisibleOrder)
{
nextWindow?.Activate();
m.Result = IntPtr.Zero;
return;
}
if (!SendActivationNotification(nextWindow))
{
break;
}
if (AllowMdiChildActivate(nextWindow))
{
ultraTabbedMdiManager.SubclasserActivatingMdiChild = true;
try
{
base.WndProc(ref m);
}
finally
{
ultraTabbedMdiManager.SubclasserActivatingMdiChild = false;
ultraTabbedMdiManager.AfterSubclasserFormActivation(nextWindow);
}
}
else
{
m.Result = IntPtr.Zero;
}
return;
}
case (int)WinApi.Messages.WM_MDIACTIVATE:
{
Form form = Control.FromHandle(m.WParam) as Form;
if (!SendActivationNotification(form))
{
break;
}
if (AllowMdiChildActivate(form))
{
ultraTabbedMdiManager.SubclasserActivatingMdiChild = true;
try
{
base.WndProc(ref m);
}
finally
{
ultraTabbedMdiManager.SubclasserActivatingMdiChild = false;
ultraTabbedMdiManager.AfterSubclasserFormActivation(form);
}
}
else
{
m.Result = IntPtr.Zero;
}
return;
}
case (int)WinApi.Messages.WM_NCPAINT:
{
base.WndProc(ref m);
if (!IsManagerEnabled)
{
return;
}
IntPtr intPtr = IntPtr.Zero;
Graphics graphics = null;
IntPtr hWnd = m.HWnd;
try
{
Rectangle rectangle = new Rectangle(Point.Empty, DisplayRectangle.Size);
if (m.WParam == IntPtr.Zero || m.WParam.ToInt64() == 1)
{
intPtr = WinApi.GetWindowDC(hWnd);
}
else
{
intPtr = WinApi.GetDCEx(hWnd, m.WParam, 129);
if (intPtr == IntPtr.Zero)
{
intPtr = WinApi.GetWindowDC(m.HWnd);
}
}
if (intPtr != IntPtr.Zero)
{
SecurityPermission securityPermission = new SecurityPermission(SecurityPermissionFlag.UnmanagedCode);
securityPermission.Assert();
graphics = Graphics.FromHdc(intPtr);
CodeAccessPermission.RevertAssert();
DrawBorder(graphics, rectangle, rectangle);
m.Result = IntPtr.Zero;
}
}
finally
{
graphics?.Dispose();
if (intPtr != IntPtr.Zero)
{
WinApi.ReleaseDC(hWnd, intPtr);
}
}
return;
}
case (int)WinApi.Messages.WM_NCCALCSIZE:
if (IsManagerEnabled && m.WParam.ToInt64() == 1)
{
NativeWindowMethods.NCCALCSIZE_PARAMS nCCALCSIZE_PARAMS = (NativeWindowMethods.NCCALCSIZE_PARAMS)m.GetLParam(typeof(NativeWindowMethods.NCCALCSIZE_PARAMS));
UIElementBorderWidths borderWidth = GetBorderWidth();
displayRect = nCCALCSIZE_PARAMS.rectProposed.Rect;
nCCALCSIZE_PARAMS.rectProposed.left += borderWidth.Left;
nCCALCSIZE_PARAMS.rectProposed.right -= borderWidth.Right;
nCCALCSIZE_PARAMS.rectProposed.top += borderWidth.Top;
nCCALCSIZE_PARAMS.rectProposed.bottom -= borderWidth.Bottom;
Marshal.StructureToPtr(nCCALCSIZE_PARAMS, m.LParam, fDeleteOld: false);
}
break;
case (int)WinApi.Messages.WM_ERASEBKGND:
base.WndProc(ref m);
if (IsManagerEnabled)
{
m.Result = new IntPtr(1);
}
return;
case (int)WinApi.Messages.WM_PARENTNOTIFY:
if ((m.WParam.ToInt32() & 0xFFFF) == 1)
{
_manager.MdiClientCreateNotification();
}
break;
}
base.WndProc(ref m);
}
private void Unhook()
{
_manager = null;
UpdateBorderStyle();
}