zfile_GetExt

Get the file extension of a file name.

bool zfile_GetExt(const char* lpFileName, ZSTR hResult);

False if no extension was found or if an error occurred, and true otherwise (with hResult containing the file extension, without the dot).

If a file has multiple extensions, such as 'test.tar.gz', zfile_GetExt will return the whole extension string (e.g. 'tar.gz'). To get the last extension, call zfile_GetExt recursively on the file extension until false is returned.

Taken from L3DTio_FI.DLL:

...
 
// create a temp var to contain the file extension
ZVAR hStr = zvar_Create(VarID_string);
if(!hStr) return false;
 
// get the file extension of lpFileName argument
if(!zfile_GetExt(lpFileName, hStr)) {
    zvar_Delete(hStr);
    return false;
}
 
char FileExt[MAX_PATH]; // declare a char array, into which we'll put the file extension
strcpy(FileExt, zstr_GetText(hStr));
 
zvar_Delete(hStr); // done with the temp string var, so delete
 
...