SDL_RWFromMem

Use this function to create an SDL_RWops structure from memory of a certain size.

Contents

Syntax

SDL_RWops* SDL_RWFromMem(void* mem,
                         int   size)

mem	_{a pointer to}^{the memory location}
size	^{the size of the memory location}

green

A pointer to the SDL_RWops structure that is created or NULL on failure; call SDL_GetError() for more information.

char bitmap[310000];
SDL_RWops *rw;

rw = SDL_RWFromMem(bitmap, sizeof(bitmap));
SDL_SaveBMP_RW(screen, rw, 0);

*
If the memory is not writable, use SDL_RWFromConstMem() instead.
*

-  ⇤ ← Revision 1 as of 2010-06-07 01:25:43 → 
  Size: 914
  Editor: SheenaSmith
  Comment: create page, add content (Wed Mar 10 ver; changeset 4428)
+   ← Revision 6 as of 2011-05-17 18:13:55 → ⇥
  Size: 1121
  Editor: SheenaSmith
  Comment: add SDL_GetError to RV
-Deletions are marked like this.
+Additions are marked like this.
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-#pragma disable-camelcase
+#pragma camelcase off
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-Use this function to create [[SDL_RWops]] structures from memory.
+Use this function to create an SDL_RWops structure from memory of a certain size.
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-||'''mem'''||^a pointer to the memory location containing the information to fill an [[SDL_RWops]] structure with^||
||'''size'''||^the size of the memory location^ ???||
+||'''mem'''||,,a pointer to ,,^the memory location^||
||'''size'''||^the size of the memory location^||

<<Color2(green,Is '''mem''' an exception to the 'pointer rule'?)>>
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+Line 23:
-A pointer to the [[SDL_RWops]] structure that is created.
+A pointer to the SDL_RWops structure that is created or NULL on failure; call [[SDL_GetError]]() for more information.
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+Line 26:
+*
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+Line 28:
-You can add your code example here
+char bitmap[310000];
SDL_RWops *rw;

rw = SDL_RWFromMem(bitmap, sizeof(bitmap));
SDL_SaveBMP_RW(screen, rw, 0);
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+Line 34:
+*
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-''You can add useful comments here''
+*<<BR>>If the memory is not writable, use [[SDL_RWFromConstMem]]() instead.<<BR>>*
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+Line 44: