From: Roger.Carlsson.3873@student.uu.se (Roger Carlsson)
Subject: help with pointerproblem.
Date: 1998/09/10
Date: 1998-09-10T00:00:00+00:00 [thread overview]
Message-ID: <35f7f673.0@newsfeed.uu.se> (raw)
Hello.
I'm writing a program in ada95 with opengl on W95.
I have the following definitions in GL.ads:
type GLubyte is new C.unsigned_char;
type GLpointer is access all GLubyte; -- our substitute for "void *"
and
procedure (.......; x : GLpointer);
My own types:
type VertexArray is array (NATURAL range <>) of aliased GLfloat;
type VertexArrayPtr is access VertexArray;
and in the program:
VPtr : VertexArrayPtr;
.....
VPtr := new VertexArray(0 .. n);
procedure(....., GLpointer(VPtr));
I want to give the procedure my VertexArray as argument x.
My question is: How do i convert my VertexarrayPtr to a GLpointer?
I have tried different solutions but the compiler complains like:
Target designated type not compatible with type VertexArray.
If i can not. Can i rewrite my own types so it works?
The VertexArray must hold GLfloat's.
Thank You.
Roger.
next reply other threads:[~1998-09-10 0:00 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
1998-09-10 0:00 Roger Carlsson [this message]
1998-09-10 0:00 ` help with pointerproblem Steve Doiel
1998-09-11 0:00 ` Wayne Magor
1998-09-11 0:00 ` Mats Weber
1998-09-12 0:00 ` dewarr
1998-09-17 0:00 ` Matthew Heaney
1998-09-11 0:00 ` Mats Weber
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