How to change an images size in c++, SDL -

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how can change images size in code below:

const int xhome = 10, yhome = 10; const int whome = 50, hhome = 50; . . .  sdl_surface* image = sdl_loadbmp(address);  sdl_rect destrect;  destrect.x = whome * x;  destrect.y = hhome * y;  destrect.w = whome; destrect.h = hhome;  sdl_blitsurface(image, null, mainscreen, &destrect);  sdl_freesurface(image);

when put image in mainscreen sdl_surface, it's bigger 50*50. possible resize image? thank you.

this happens when set whome , hhome, 50*50.
since have 5 reputation, can't post images. see image please click here.

but when set them original images size, see:
here

according sdl_blitsurface documentation:

only position used in dstrect (the width , height ignored).

i highly recommend switching sdl 2 many reasons (hardware acceleration being big one); task become trivial texture , sdl_rendercopy. if you're somehow stuck using sdl 1, can either scaling surfaces manually, or use library sdl_gfx, has custom blit functions.


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