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EZ_GetItemUnknownData(3) EZWGL Functions EZ_GetItemUnknownData(3)

EZ_SetItemUnknownData, EZ_GetItemUnknownData, EZ_GetItemUnknownDataPtr
- register/retrieve arbitary data to a display item

#include <EZ.h>
typedef union { char c; short s; int i; long l; unsigned char uc; unsigned short us; unsigned int ui; unsigned long ul; float f; void *p; } EZ_UnknownDataType;
void EZ_SetItemUnknownData( EZ_Item*Item, int idx, EZ_UnknownDataType data) int EZ_GetItemUnknownData( EZ_Item*Item, int idx, EZ_UnknownDataType *data_ret) EZ_UnknownDataType EZ_GetItemUnknownDataPtr( EZ_Item*Item)

Item Specifies a display item.
idx Specifies a positive integer.
data Specifies an entity of type EZ_UnknownDataType.
data_ret Specifies the return for client data.

These functions attach client data to a display item. They are convenient (but a little dangerous) routines. They come handy when one wants to attach a few client data to a display item and does not feel like to create special data structures to handle them.
EZ_SetItemUnknownData (re)allocates the storage allocated for client data and set the 'idx' entry to
EZ_GetItemUnknownData retrieves the client data stored at the 'idx' location. It returns 1 if the 'idx'th entry is available and returns 0 otherwise.
EZ_GetItemUnknownDataPtr returns the array allocated for client data.

EZ_SetItemPtrData(3), EZ_SetItemIntData(3),
EZWGL

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