user interface - Java SWT: Widgets(buttons, labels) used properly -

-

This is my first question but I'm really stuck. Maybe it's my exorbitance for the past few days, but now I looked at Google for a few hours and could not get any closer to the good answer.

I know that SWT is running like all GUIs which I think and when creating widgets, I should keep in mind that they should be able to reach those people with whom they modify / talk Want to But I need to know that if my thinking is correct and if I am not good then what should I do?

Let's say I add Eclipse + Window Builder + swt / jface java project then I add buttons and clawl + click listener (button button), so the generated code looks more or less (main only Method, above only main square and import) 

  public static zero main (string [] args) {display display = Display.getDefault (); Shell shell = new shell (); Shell.set size (450, 300); Shell.setText ("SWT Application"); Button BTN Newton = new button (shell, SWT.NONE); BtnNewButton.addSelectionListener (new selection adapter) {@ Override Public Wide WidgetSwitch (SelectionEvent e) {}}); BTN New Button Setbound (51, 31, 75, 25); BtnNewButton.setText ("new button"); CLabel lblOneTwo = new collabel (shell, SWT.NONE); LblOneTwo.setBounds (180, 119, 61, 21); LblOneTwo.setText ("One Two"); Shell.open (); Shell.layout (); While (! Shell.isDisposed ()) {if (! Display.readAndDispatch ()) {display.sleep (); }}}   
 As I know and it's probably obvious to most of you I just can not go and  
  btnNewButton.addSelectionListener ( New Select Adapter () {@ Override Public Zero Widget Selected (SelectionEvent e) {}});  lblOneTwo.setText ("three")  And as I know and sometimes use, I declare all the things before the code, as  is a static widget widget < / Code> and after that I can access them basically everywhere, therefore code like  
  static button btnNew button; Static CLabel lblOneTwo; Public static zero main (string [] args) {display display = Display.getDefault (); Shell shell = new shell (); Shell.set size (450, 300); Shell.setText ("SWT Application"); BTnNEbutton = new button (shell, SWT.NONE); BtnNewButton.addSelectionListener (New selectionEdapter () {@ Override Public Zero widget selected (SelectionEvent e) {lblOneTwo.setText ("three");}}); (...)   
 works fine but I think and think that this is not the best practice and the way to do it, right? So please, help me, tell me in the right direction so that I can stop coding in one sin. Thanks in advance! Indirect answers will be very good with links to articles / tutorials, but I liked the example people who are being put here because of their obvious way of displaying things.   
 
 
 There are several ways to do this  
     
  1.  
     Your class Create widget field. Do not  static  until they are needed  
      Private label L; Private button b; Public static zero main (string [] args) {... b.addListener (...);    
  2.  
     Firstly define all your widgets (if the  should be the last , if you use them in  listener / server )>), Then add your  listener  s.  
      last label l = ...; Last button b = ....; B.addListener (...);    
  3.  
     If you want to change the widget to the  listener  then you can use the  Event # Widget  Find the source of the event  
      b.addListener (SWT.Selection, new listener) {public void handleEvent (event e) {button button = (button) e.widget;}} );

Comments

Post a Comment

Popular posts from this blog

ios - Adding an SKSpriteNode to SKScene from a child SKSpriteNode -

-
I have a SKScene where I am adding an SKSpriteNode I have subclassed the SKSpriteNode class to create this node. In the subclass I am defining some SKActions on Sprite. What do I want to do when the end of this phantom ends the SKAction sequence, then I add a new Prayer node to this scene. How is this possible. The following code is mine: The code for the sequence is that I'm running on the Scansprinitode subclass (TEMissileNode): - SKAction * moveDown = [SKAction moveToY: Self.position.y - 20 Duration: 0.2]; SKAction * animation = [SKAction animateWithTextures: textures timePerFrame: time / 7]; SKAction * moveMissileProjectile = [SKAction Moving: Pointoffscreen Term: Time]; SKAction * group = [SKAction group: @ [animation, movement projectile]]; SKAction * Sequence = [SKAction Sequence: @ [Hilldown, Group, [SKAction removalFromParent]]]; [Self run action: sequence]; From the main scene, I call those actions that execute these tasks TEMissileNode * missile = [tmissil...
Read more

Matlab transpose a table vector -

-
An embarrassing simple question seems to be, but how can I move a Matlab table vector? aTableT = aTable '; I tried a standard syntax for the simple interaction of a line vector to a line vector aTable : ATableT = reshape (aTable, 1, Height (aTable)); and aTableT = rot90 (aTable); According to the head, the last time table should work for table, see. However, I get this error code: Error type in using table / permit (line 396) Undefined function 'permute' for the input arguments. Error in rot 90 (line 29) b = magnitude (b, [2 1 3: ndims (a)]); NB: fliplr is not useful either pretty sure I have covered clear angles - any ideas? Thanks! Try changing your table into an array, move it, then back to a table In other words, try doing this: aTableArray = table2array (aTable); ATableT = array 2table (aTableArray. '); I have also read the document for rot90 , and it says that rot90 is definitely working for tables Do, and I find you...
Read more

c# - Textbox not clickable but editable -

-
I have a small form with 10 text boxes, I have set them in the correct tab order. I want them on my tab service I was wondering if there is a way to set the text box so that they can be selected for editing until they are tabbed. That is ... I do not want the end user to edit the text box to click on them, I just want to make them editable through tabu. this should do the trick public partial category poor text box: Text Box {Safe Override Zero WndProc (Ref: Message Message) {if (m.msg == (Int) WM.LBUTTONDOWN) {Return; // mount down events} base.WndProc (ref m); }} Window message enum can be found. How to do this without anherizing: text box : class EatMouseDown: netwindows {safe override zero WndProc (ref message message) {if (m.msg == (int) WM.LBUTTONDOWN) {return; } Base.WandProc (Ref M); }} Safe Override Zero Onload (EventEurge E) {base.OnLoad (e); How to do this without any part: left a clean part, whatever is important, this can be a buggy but it works R...
Read more