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#!F-adobe-helvetica-medium-r-normal--18*
#!N 
#!N  #!Rdxqca DXQueryConstantArray #!N #!N Function #!N #!N Determines whether 
an Array contains constant data, and, if so, returns both the 
number of items and in the array and the data value. 
#!N #!N Syntax #!N  #!F-adobe-times-bold-r-normal--18*   #include <dx/dx.h> Array DXQueryConstantArray (Array a, 
int *num, Pointer data) #!EF #!N #!N Functional Details #!N #!N 
 #!F-adobe-times-bold-r-normal--18*   DXQueryConstantArray #!EF determines if Array  #!F-adobe-times-bold-r-normal--18*   a #!EF contains constant 
data. If so, if  #!F-adobe-times-bold-r-normal--18*   num #!EF is not  #!F-adobe-times-bold-r-normal--18*   NULL 
#!EF , the number of items contained in  #!F-adobe-times-bold-r-normal--18*   a #!EF 
is returned in  #!F-adobe-times-bold-r-normal--18*   *num #!EF . If  #!F-adobe-times-bold-r-normal--18*   data #!EF 
is not  #!F-adobe-times-bold-r-normal--18*   NULL #!EF , the constant value contained in 
 #!F-adobe-times-bold-r-normal--18*   a #!EF will be copied to the block of memory 
pointed to by  #!F-adobe-times-bold-r-normal--18*   data #!EF . In this case  #!F-adobe-times-bold-r-normal--18*   
data #!EF should point to a block of memory large enough 
to hold one element of  #!F-adobe-times-bold-r-normal--18*   a #!EF ; this size 
can be determined by calling  #!F-adobe-times-bold-r-normal--18*   DXGetItemSize(a) #!EF . #!N #!N 
 #!F-adobe-times-bold-r-normal--18*   DXQueryConstantArray #!EF considers both Constant Array and Regular Array Objects 
with zero delta values to be constant. #!N #!N The value 
stored in  #!F-adobe-times-bold-r-normal--18*   a #!EF may also be accessed by a 
call to  #!F-adobe-times-bold-r-normal--18*   DXGetConstantArrayData #!EF . This call returns a pointer 
to the internal memory of  #!F-adobe-times-bold-r-normal--18*   a #!EF , providing a 
 #!F-adobe-times-medium-i-normal--18*   read-only #!EF copy of the data without the need to 
allocate a block of memory. #!N #!N Return Value #!N #!N 
Returns  #!F-adobe-times-bold-r-normal--18*   a #!EF if  #!F-adobe-times-bold-r-normal--18*   a #!EF contains constant data 
or  #!F-adobe-times-bold-r-normal--18*   NULL #!EF (without setting an error code) if  #!F-adobe-times-bold-r-normal--18*   
a #!EF is an Array that does not contain constant data; 
otherwise, returns  #!F-adobe-times-bold-r-normal--18*   NULL #!EF and sets an error code. #!N 
#!N See Also #!N #!N  #!F-adobe-times-bold-r-normal--18*    #!Ldxgcad,dxall1230 h DXGetConstantArrayData  #!EL  ,  #!Ldxgis,dxall1245 h DXGetItemSize  #!EL  ,  #!Ldxncav,dxall1314 h DXNewConstantArray, DXNewConstantArrayV  #!EL  
,  #!Ldxnra,dxall1324 h DXNewRegularArray  #!EL  #!EF #!N #!N  #!Lctas,dxall1079 h Constant Arrays  #!EL  . #!N #!N #!N  #!F-adobe-times-medium-i-normal--18*   
Next Topic #!EF #!N #!N  #!Ldxqdl,dxall1342 h DXQueryDistantLight  #!EL  #!N  #!F-adobe-times-medium-i-normal--18*   #!N