[Apocalypse]

I am trying to get some information surrounding the dimensions of a subclass of NSOpenGLView and I am running into some difficulties.

I am trying to call:
[[self bounds] width];
or
[[self bounds] maxX];

Neither of these seem to work at all. It seems to be having trouble finding the width and maxX methods within NSRect (the return type for [self bounds]). It finds the bounds NSRect of the view, the implicitly declares width or maxX as return type id when it can't find them. I couldn't find a class header file for NSRect in Foundation or Appkit (it should be in Foundation, I think) so I had to look online to get the method prototypes. They all appear to be in C while almost the entire rest of the API is obj-C. I was wondering if this might be causing this problem but using C syntax to call these methods didn't work either. If anyone could help me out that would be much appreciated.
Or, if you can think of a better way to get the coordinates of a mouseUp event in an OpenGLView's coordinate system (without Z, I guess), that would also be helpful (but I am trying not to use GLUT, just GLU and cocoa API).

Hope to hear form someone soon,
Jeff.

[lindberg]

NSRect, NSPoint, and NSSize are are regular C structures, not Objective-C classes. The structures and the functions to manipulate them are declared in <Foundation/NSGeometry.h>.

So, you really want:

NSWidth([self bounds])

NSMaxX([self bounds])

I guess these constructs were considered too simple to bother with making them classes -- they really are just data storage, after all, and it's probably easier to manipulate them as structures. Java doesn't have structures, so they're implemented as real classes there, but not in ObjC. NSRange (in ObjC) is also a C structure if you come across that, defined in <Foundation/NSRange.h>.


[This message has been edited by lindberg (edited 03-19-2001).]