Add a background image to the image in vs2010

Something simple, hey

1. Void ctestdlg: onpaint ()
2. {
3. If (isiconic ())
4. {
5. Cpaintdc DC (this); // device context used for plotting
7. Sendmessage (wm_iconerasebkgnd, reinterpret_cast <wparam> (DC. getsafehdc (), 0 );
9. // Center the icon in the rectangle of the Workspace
10. Int cxicon = getsystemmetrics (sm_cxicon );
11. Int cyicon = getsystemmetrics (sm_cyicon );
12. Crect rect;
13. Getclientrect (& rect );
14. Int x = (rect. Width ()-cxicon + 1)/2;
15. Int y = (rect. Height ()-cyicon + 1)/2;
17. // Draw the icon
18. DC. drawicon (X, Y, m_hicon );
19. }
20. Else
21. {
22. Cpaintdc DC (this );
23. Crect rect;
24. Getclientrect (& rect); // obtain the customer's size
26. CDC memdc;
27. Cbitmap;
28. Cbitmap * poldmembmp = NULL;
29. Cbitmap. loadbitmap (idb_bitmap1 );
31. Memdc. createcompatibledc (& DC); // create a device object context
32. Poldmembmp = memdc. SelectObject (& cbitmap );
34. Bitmap BMP;
35. Cbitmap. getbitmap (& BMP );
36. Setstretchbltmode (DC, stretch_halftone); // It is said that distortion can be reduced
37. DC. stretchblt (0, 0, rect. Width (), rect. Height (), & memdc, 0, BMP. bmwidth, BMP. bmheight, srccopy );
39. Memdc. SelectObject (poldmembmp );
40. Cdialogex: onpaint ();
41. }
42. }

Is it easy?

Add a background image to the image in vs2010