private Direct3D9Ex(ComInterface.IDirect3D9Ex obj)
 {
     this.comObject = obj;
     ComInterface.GetComMethod(this.comObject, 20, out this.createDeviceEx);
 }
 internal Direct3DDevice9Ex(ComInterface.IDirect3DDevice9Ex obj)
 {
     this.comObject = obj;
     ComInterface.GetComMethod(this.comObject, 28, out this.createRenderTarget);
 }