internal override void RecreateHandleCore() {
//Debug.Assert( CanRecreateHandle(), "Recreating handle when form is not ready yet." );
NativeMethods.WINDOWPLACEMENT wp = new NativeMethods.WINDOWPLACEMENT();
FormStartPosition oldStartPosition = FormStartPosition.Manual;
if (!IsMdiChild && (WindowState == FormWindowState.Minimized || WindowState == FormWindowState.Maximized)) {
wp.length = Marshal.SizeOf(typeof(NativeMethods.WINDOWPLACEMENT));
UnsafeNativeMethods.GetWindowPlacement(new HandleRef(this, Handle), ref wp);
}
if (StartPosition != FormStartPosition.Manual) {
oldStartPosition = StartPosition;
// Set the startup postion to manual, to stop the form from
// changing position each time RecreateHandle() is called.
StartPosition = FormStartPosition.Manual;
}
EnumThreadWindowsCallback etwcb = null;
SafeNativeMethods.EnumThreadWindowsCallback callback = null;
if (IsHandleCreated) {
// First put all the owned windows into a list
etwcb = new EnumThreadWindowsCallback();
if (etwcb != null) {
callback = new SafeNativeMethods.EnumThreadWindowsCallback(etwcb.Callback);
UnsafeNativeMethods.EnumThreadWindows(SafeNativeMethods.GetCurrentThreadId(),
new NativeMethods.EnumThreadWindowsCallback(callback),
new HandleRef(this, this.Handle));
// Reset the owner of the windows in the list
etwcb.ResetOwners();
}
}
base.RecreateHandleCore();
if (etwcb != null) {
// Set the owner of the windows in the list back to the new Form's handle
etwcb.SetOwners(new HandleRef(this, this.Handle));
}
if (oldStartPosition != FormStartPosition.Manual) {
StartPosition = oldStartPosition;
}
if (wp.length > 0) {
UnsafeNativeMethods.SetWindowPlacement(new HandleRef(this, Handle), ref wp);
}
if (callback != null) {
GC.KeepAlive(callback);
}
}
internal override void RecreateHandleCore()
{
System.Windows.Forms.NativeMethods.WINDOWPLACEMENT placement = new System.Windows.Forms.NativeMethods.WINDOWPLACEMENT();
FormStartPosition manual = FormStartPosition.Manual;
if (!this.IsMdiChild && ((this.WindowState == FormWindowState.Minimized) || (this.WindowState == FormWindowState.Maximized)))
{
placement.length = Marshal.SizeOf(typeof(System.Windows.Forms.NativeMethods.WINDOWPLACEMENT));
System.Windows.Forms.UnsafeNativeMethods.GetWindowPlacement(new HandleRef(this, base.Handle), ref placement);
}
if (this.StartPosition != FormStartPosition.Manual)
{
manual = this.StartPosition;
this.StartPosition = FormStartPosition.Manual;
}
EnumThreadWindowsCallback callback = null;
System.Windows.Forms.SafeNativeMethods.EnumThreadWindowsCallback callback2 = null;
if (base.IsHandleCreated)
{
callback = new EnumThreadWindowsCallback();
if (callback != null)
{
callback2 = new System.Windows.Forms.SafeNativeMethods.EnumThreadWindowsCallback(callback.Callback);
System.Windows.Forms.UnsafeNativeMethods.EnumThreadWindows(System.Windows.Forms.SafeNativeMethods.GetCurrentThreadId(), new System.Windows.Forms.NativeMethods.EnumThreadWindowsCallback(callback2.Invoke), new HandleRef(this, base.Handle));
callback.ResetOwners();
}
}
base.RecreateHandleCore();
if (callback != null)
{
callback.SetOwners(new HandleRef(this, base.Handle));
}
if (manual != FormStartPosition.Manual)
{
this.StartPosition = manual;
}
if (placement.length > 0)
{
System.Windows.Forms.UnsafeNativeMethods.SetWindowPlacement(new HandleRef(this, base.Handle), ref placement);
}
if (callback2 != null)
{
GC.KeepAlive(callback2);
}
}
