Изменение размеров ЧУЖОЙ формы - C#

[DllImport("user32.dll", EntryPoint = "SetWindowPos")]
public static extern IntPtr SetWindowPos(IntPtr hWnd, int hWndInsertAfter, int x, int y, int cx, int cy, int uFlags);
const short SWP_NOZORDER = 0x4;
const int SWP_SHOWWINDOW = 0x0040;
 
// ...
 
SetWindowPos(handle, 0, 0, 0, new_width, new_height, SWP_NOZORDER | SWP_SHOWWINDOW);