###### (This is the documentation for SDL3, which is under heavy development and the API is changing! [SDL2](https://wiki.libsdl.org/SDL2/) is the current stable version!) # SDL_CopyProperties Copy a set of properties. ## Header File Defined in [](https://github.com/libsdl-org/SDL/blob/main/include/SDL3/SDL_properties.h) ## Syntax ```c int SDL_CopyProperties(SDL_PropertiesID src, SDL_PropertiesID dst); ``` ## Function Parameters | | | | ----------- | -------------------------- | | **src** | the properties to copy | | **dst** | the destination properties | ## Return Value Returns 0 on success or a negative error code on failure; call [SDL_GetError](SDL_GetError)() for more information. ## Remarks Copy all the properties from one set of properties to another, with the exception of properties requiring cleanup (set using [SDL_SetPropertyWithCleanup](SDL_SetPropertyWithCleanup)()), which will not be copied. Any property that already exists on `dst` will be overwritten. ## Thread Safety It is safe to call this function from any thread. ## Version This function is available since SDL 3.0.0. ---- [CategoryAPI](CategoryAPI), [CategoryAPIFunction](CategoryAPIFunction), [CategoryProperties](CategoryProperties)