public SurrogateMdiChild(HookedMdiWindow parent, string title, Rectangle location, bool isResizable, bool isMovable, ISurrogateMdiChildContent childContent)
{
Contract.Requires(parent != null);
Contract.Requires(childContent != null);
this.Parent = parent;
this.IsResizable = isResizable;
this.IsMovable = isMovable;
this.ChildContent = childContent;
this.Surrogate = new SurrogateMdiChildControl(this);
this.Surrogate.Text = title;
this.Surrogate.ClientSize = location.Size;
this.Surrogate.Location = location.Location;
this.Surrogate.CreateControl();
// for some reason, these are re-added despite CreateParams
// so we have to remove them here
var hwnd = this.Surrogate.Handle;
var ws = GetWindowLong(hwnd, GWL_STYLE);
ws &= ~(WS_MINIMIZEBOX | WS_MAXIMIZEBOX);
ws &= ~(IsResizable ? 0 : WS_THICKFRAME);
SetWindowLong(hwnd, GWL_STYLE, ws);
// since we changed the window styles, we have to redraw
SetWindowPos(hwnd, IntPtr.Zero, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER | SWP_FRAMECHANGED);
}
// called by Surrogate
private void OnDestroy()
{
if (IsDestroyed)
{
return;
}
IsDestroyed = true;
// GC Roots:
// - Parent.SurrogatedChildren
// released via Parent.NotifyClosed(this)
// - UI -> SurrogateMdiChildControl
// released in WM_DESTROY (caller to this method)
// - CCW -> this
// not in our control, so we have to minimize held references
// Held references:
// - ChildContent (CCW)
// - Surrogate
ChildContent = null;
Surrogate = null;
Parent.NotifyClosed(this);
}
