Those functions are class members. I did not know that pointers cannot be gotten for class member functions. That was the problem. Thanks.
A function pointer does not contain enough information to point to a member function, it's missing the class instantiation ( the bit of memory containing member variables, etc) so C++ won't let you do it.
You can do it with static member functions because they don't even have access to a class' members. If that doesn't matter, if they really don't use the class, you can make them static and get pointers to them.
Last edited by Corona688; 05-31-2018 at 01:18 PM..
I am pondering the next question:
Can I safely sare objects that have virtual functions (i.e. have
virtual function table pointers) between two processes ?
Where will the pointers point to in each process ?
What I am afraid of is that in the creating process the pointer
will indeed point to... (2 Replies)
HI,
Here is some thing that is puzzling me from a long time.
Can some body explain me this with example.
The question is :-
What is the difference between function pointer and pointer to a function.
Where do we actually use the function pointers and pointer to functions.
Thanks in... (0 Replies)
using bash Tru64...
converting DCL to shell...
any tips to make this work would be greatly appreciated.
Below is my failed attempt to assign command line input to variables by first declaring an array. I use a counter to create unique variables in a loop through the array. I need to call... (3 Replies)
hi all,
let say i have a pointer exit, and this exit will store some value. how can i store the value that the pointer points to into an array and then print them out from the array.
thanks in advance (2 Replies)
Hi Guys
Need some help
I am reading the string values from the text files into the shell script and had them feed into array
I have declared an associative array as
TYPE t_user_id_tab IS TABLE OF VARCHAR2(3000);\n
my_user_id t_user_id_tab;\n
varchar2 is limiting me to take only... (0 Replies)
Hi All,
I am using the array of pointers and storing the address of string.This is a global list.
So i am using extern to give the reference of this list to another file and using reading the data from this string.
But list is being corrupted and string is missing some characters in... (2 Replies)
Please find the below program. the requirement and description of the program also given:
ganesh@ubuntu:~/my_programs/c/letusc/chap9$ cat fa.c.old
/* Program : write a program to count the number of 'e' in thefollowing array of pointers to strings:
char *s = {
"We will teach you how... (12 Replies)
Hello forum memebers
As iam new to C++ programming i am little bit confuse to understand the function pointers.
Please help me to understand the function pointers with examples are suggest me good site for this,Its better if it have picturial representation ie any PPTS available in Google.... (2 Replies)
Hello, I read from a book exercise for a challenge. How to print out each letter of char array a by two different pointers pa and ppa in the example?
I have tried my code for letter "r" by testing without full understanding as only the first one worked.
#include<stdio.h>
int main()
{
char... (17 Replies)
Hello,
In a shell script, I want to declare an array and subsequently print the elements with tab delimits.
My array has the following structure and arbitrary elements:
myArray=('fgh' 'ijk' 'xyz' 'abc');
Next, I would like to print it with a '\n' at the end.
Thanks for your input!
... (2 Replies)
Discussion started by: Gussifinknottle
2 Replies
LEARN ABOUT MOJAVE
glarrayelement
GLARRAYELEMENT(3G)GLARRAYELEMENT(3G)NAME
glArrayElement - render a vertex using the specified vertex array element
C SPECIFICATION
void glArrayElement( GLint i )
PARAMETERS
i Specifies an index into the enabled vertex data arrays.
DESCRIPTION
glArrayElement commands are used within glBegin/glEnd pairs to specify vertex and attribute data for point, line, and polygon primitives.
If GL_VERTEX_ARRAY is enabled when glArrayElement is called, a single vertex is drawn, using vertex and attribute data taken from location
i of the enabled arrays. If GL_VERTEX_ARRAY is not enabled, no drawing occurs but the attributes corresponding to the enabled arrays are
modified.
Use glArrayElement to construct primitives by indexing vertex data, rather than by streaming through arrays of data in first-to-last order.
Because each call specifies only a single vertex, it is possible to explicitly specify per-primitive attributes such as a single normal per
individual triangle.
Changes made to array data between the execution of glBegin and the corresponding execution of glEnd may affect calls to glArrayElement
that are made within the same glBegin/glEnd period in non-sequential ways. That is, a call to
glArrayElement that precedes a change to array data may access the changed data, and a call that follows a change to array data may access
original data.
NOTES
glArrayElement is available only if the GL version is 1.1 or greater.
glArrayElement is included in display lists. If glArrayElement is entered into a display list, the necessary array data (determined by the
array pointers and enables) is also entered into the display list. Because the array pointers and enables are client-side state, their val-
ues affect display lists when the lists are created, not when the lists are executed.
SEE ALSO
glClientActiveTextureARB, glColorPointer, glDrawArrays, glEdgeFlagPointer, glGetPointerv, glIndexPointer, glInterleavedArrays,
glNormalPointer, glTexCoordPointer, glVertexPointer
GLARRAYELEMENT(3G)