Creates the handle for the form. If a derived class overrides this function, it must call the base implementation.
protected override void CreateHandle()
A handle for this Form has already been created.
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2