Callback to compare 2 keys.
Source position: fgl.pp line 295
 public property TFPSMap.OnKeyPtrCompare : TFPSListCompareFunc  | 
OnKeyPtrCompare is used to compare the values of 2 keys. By default it simply compares the byte values of the key memory block. It can be set to any function that performs another comparison. (e.g. a function that treats the memory blocks as a string pointer and compare the actual strings).
This function is used to sort the list or find a key.
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Compare list items callback signature.  | 
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Callback to compare 2 data items.  | 
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Sort the list according to key.  | 
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Find data using the associated key.  | 
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Index of key pointed to by AKey.  |