This sample demonstrates how to respond to the app s window

// getting resized by resizing the front and back buffers of

// the Direct3D device to match it. If you don t do this,

// Direct3D will be forced to perform a stretch blit when the

// window is enlarged and everything rendered will appear

// course and blocky. For example, if the initial window size

// and Direct3D device are set to 640x480 and you enlarge the

// window to be 1024x768, the Direct3D device will continue to

// render at 640x480 unless its front and back buffers are

// resized accordingly.

-This sample demonstrates how to respond to the app s window　

//　　　　　　　　 getting resized by resizing the front and back buffers of　

//　　　　　　　　 the Direct3D device to match it. If you don t do this,　

//　　　　　　　　 Direct3D will be forced to perform a stretch blit when the

//　　　　　　　　 window is enlarged and everything rendered will appear

//　　　　　　　　 course and blocky. For example, if the initial window size

//　　　　　　　　 and Direct3D device are set to 640x480 and you enlarge the

//　　　　　　　　 window to be 1024x768, the Direct3D device will continue to

//　　　　　　　　 render at 640x480 unless its front and back buffers are　

//　　　　　　　　 resized accordingly.