Infinit loop

[Ary Borenszweig]

wongtd escribió:
> see this here
> 
> module Box; import dwt.DWT; import dwt.widgets.Composite; import dwt.widgets.Control; import dwt.widgets.Text; import dwt.widgets.Shell; import dwt.widgets.Display; import tango.io.Stdout; class Box {     private Control[char[]] controls; // Use associative array     this (Composite parent ,int style ) {     auto box = new Composite(parent,DWT.SINGLE);     box.setSize(700,40);     auto No = new Text(box,DWT.LEFT);     No.setBounds(1,15,10,15);     No.setText("");            auto Date = new Text(box,DWT.LEFT);     Date.setBounds( 21, 15, 60, 15);     Date.setText("");            auto Content   = new Text(box,DWT.LEFT);     Content.setBounds( 90, 15,70, 15);     Content.setText("");     box.setVisible = true;     controls["No"] = No;     controls["Date"] = Date;     controls["Content"] = Content;          box.setTabList(controls.values);   }   void setText(char[] name, char[] text)   {       controls[name].setText(text);    } } void main () {   Display display = new Display 
();   Shell shell = new Shell (display);   shell.setText("Boxes");      Box mybox1 = new Box(shell,DWT.SINGLE);   mybox1.setText("No","wire");   Box mybox2 = new Box(shell,DWT.SINGLE);   mybox2.setText("Content","Fishingline");   shell.pack();   shell.open();           while (!shell.isDisposed ()) {     if (!display.readAndDispatch ()) display.sleep ();   }   display.dispose (); } /*---------------------------------------------------------------------------- Box.d(44): Error: no property 'setText' for type 'dwt.widgets.Control.Control' Box.d(44): Error: function expected before (), not 1 of type int */

The formatted code is:

---
module Box;

import dwt.DWT;
import dwt.widgets.Composite;
import dwt.widgets.Control;
import dwt.widgets.Text;
import dwt.widgets.Shell;
import dwt.widgets.Display;
import tango.io.Stdout;

class Box {
	private Control[char[]] controls; // Use associative array

	this(Composite parent, int style) {
		auto box = new Composite(parent, DWT.SINGLE);
		box.setSize(700, 40);
		auto No = new Text(box, DWT.LEFT);
		No.setBounds(1, 15, 10, 15);
		No.setText("");
		auto Date = new Text(box, DWT.LEFT);
		Date.setBounds(21, 15, 60, 15);
		Date.setText("");
		auto Content = new Text(box, DWT.LEFT);
		Content.setBounds(90, 15, 70, 15);
		Content.setText("");
		box.setVisible = true;
		controls["No"] = No;
		controls["Date"] = Date;
		controls["Content"] = Content;
		box.setTabList(controls.values);
	}

	void setText(char[] name, char[] text) {
		controls[name].setText(text); // ** Here's the error **
	}
}

void main() {
	Display display = new Display();
	Shell shell = new Shell(display);
	shell.setText("Boxes");
	Box mybox1 = new Box(shell, DWT.SINGLE);
	mybox1.setText("No", "wire");
	Box mybox2 = new Box(shell, DWT.SINGLE);
	mybox2.setText("Content", "Fishingline");
	shell.pack();
	shell.open();
	while(!shell.isDisposed()) {
		if(!display.readAndDispatch())
			display.sleep();
	}
	display.dispose();
}
---

You are getting that error because the class Control doesn't have a 
method named setText. You probably want to declare controls as follows:

private Text[char[]] controls; // Use associative array

(and probably use another name instead of controls)

> 
> I play with and put in 
> 
> }
> 
>   void setText(char[] text)
> { 
>   setText(text);//dont understand why this does not cause infinite loop?
> }

When you defined that method, did you invoke it? If not, that's why you 
didn't get infinite loops. But you should, if you invoke it.

> 
>   void setText(char[] name, char[]text)
>   {
> //   name.setText(text);
>   }
> }
> 
> with layout in shell above compiles and runs giving 9 text boxes with right text.
> 
> Question   When setText(name,text ) is called Why does setText(text) not cause infinit loop?

That's a different question. setText(name, text) and setText(text) are 
different methods: two methods are considered the same if they have the 
same name, same formal arguments, and same return type.

> It calls itself seems so
> I tried to put in 'override' but would not compile

Because setText(char[] name, char[] text) is not a method of Object (the 
class your Box is inheriting from). It wouldn't work either if you 
extended from Text, because Text has the method setText(char[] text), 
which is a different method than setText(char[] name, char[] text).