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On Sunday 20 January 2002 1:35 am, you wrote:
Neil Williams wrote:So what was the point of writing it in Java??!!Having written a non-portable Java program... Our motivation was to allow easier portability in the future, at the time Java's printing facilities left us cold, so we cheated in the printing class. Fitting alternative printing solutions will be easy when the time comes. Not sure about Nokia's motivation.
Have you tried writing in GridLayout()? After the precise control available through platform dependence, the Java rendering is very ugly. It is a VERY high price to pay for platform independence. (Or at least was last time I played with it.) But that's the real point about Nokia's Java toolkit - the rest of the code is easily switched from C++ to Java because the syntax is very similar. So they did the easy bit and got 'cold feet' when the Java language insisted on a complete re-write of the GUI. I'm not saying Nokia are bad for doing that - it's a classic example of the failings of Java. Maybe things are better now, but forgive me if I stick to C/C++.
Please explain Simon - is STL akin to the API in Windoze speak?STL is the standard template library. Templates let you apply common algorithmns and techniques in C++.
As opposed to the API which lets you apply common functions and constructors?
When you say STL, do you mean using TWindow() and KWindow() instead of the
'raw' PASCAL CALLBACK functions for Windows?
e.g.
DWORD FAR PASCAL SelectProc(HWND hwnd,WORD message etc etc
or
<windows.h>
class TWindow() {}
From the code in list.cpp, I don't think we're talking about the same
standards. I use standard functions, standard includes and I use the class hierarchy of the compiler - TWindow on Borland Windows, KWindow in KDevelop. Then various classes to hold and pass around data between sections of the program and I use inheritance to add functionality. (Which is where I get confused with KMainWindow and QWidget - when I compile a new project in KDevelop - e.g. a simple MDI app - it runs OK but the windows don't display content. It pretends to open a text file but no text is displayed. How do I get the DocumentView to behave as a text editor?) I really ought to get a Linux programming text didn't I!
Basically create a structure "node", and then create a "list" called "top" of that structure, and then play with it a bit.
I know about structures and creating instances of the structure, it's this
bit that confuses me:
struct node {
char c;
int i;
double d;
// here:
node () {}
node (char c, int i, double d) : c(c), i(i), d(d) {}
};
Do node () {} node (char c, int i, double d) : c(c), i(i), d(d) {} act as a
constructor and destructor? Do these lines create an instance of the struct
in the same way as
struct node {
char c;
int i;
double d;
} top;
?
If you are using a constructor and a destructor, wouldn't it be easier to use
a class?
class mydata {
public:
char c;int i;double d;
mydata (char Initc,int Initi,double Initd) { c=Initc;i=Initi;d=Initd;}
};
mydata sample('r',1,0.5);
sample.i=sample.i*2;
etc.
int main() {
list<node> top;
?Que? I can't find a reference to list<> - what does this line do?
Nothing in the example requires the "list" template, and you can probably swap 'list' for another similar template. Hopefully you've been using them without knowing it?
I'm still confused. What are the templates similar to list? It doesn't sound as if I have been using such templates, I use class templates and standard functions but the templates just aren't making sense.
#include <list>
Where do I find the file: list? -- Neil Williams ============= http://www.codehelp.co.uk neil@xxxxxxxxxxxxxx linux@xxxxxxxxxxxxxx neil@xxxxxxxxxxxx -- The Mailing List for the Devon & Cornwall LUG Mail majordomo@xxxxxxxxxxxx with "unsubscribe list" in the message body to unsubscribe.